var NovationLaunchpad = (function () {
'use strict';

/* global engine, midi, script */
var engine_1 = engine;
var midi_1 = midi;

var _typeof = typeof Symbol === "function" && typeof Symbol.iterator === "symbol" ? function (obj) {
  return typeof obj;
} : function (obj) {
  return obj && typeof Symbol === "function" && obj.constructor === Symbol && obj !== Symbol.prototype ? "symbol" : typeof obj;
};











var classCallCheck = function (instance, Constructor) {
  if (!(instance instanceof Constructor)) {
    throw new TypeError("Cannot call a class as a function");
  }
};

var createClass = function () {
  function defineProperties(target, props) {
    for (var i = 0; i < props.length; i++) {
      var descriptor = props[i];
      descriptor.enumerable = descriptor.enumerable || false;
      descriptor.configurable = true;
      if ("value" in descriptor) descriptor.writable = true;
      Object.defineProperty(target, descriptor.key, descriptor);
    }
  }

  return function (Constructor, protoProps, staticProps) {
    if (protoProps) defineProperties(Constructor.prototype, protoProps);
    if (staticProps) defineProperties(Constructor, staticProps);
    return Constructor;
  };
}();





var defineProperty = function (obj, key, value) {
  if (key in obj) {
    Object.defineProperty(obj, key, {
      value: value,
      enumerable: true,
      configurable: true,
      writable: true
    });
  } else {
    obj[key] = value;
  }

  return obj;
};



var inherits = function (subClass, superClass) {
  if (typeof superClass !== "function" && superClass !== null) {
    throw new TypeError("Super expression must either be null or a function, not " + typeof superClass);
  }

  subClass.prototype = Object.create(superClass && superClass.prototype, {
    constructor: {
      value: subClass,
      enumerable: false,
      writable: true,
      configurable: true
    }
  });
  if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass;
};











var possibleConstructorReturn = function (self, call) {
  if (!self) {
    throw new ReferenceError("this hasn't been initialised - super() hasn't been called");
  }

  return call && (typeof call === "object" || typeof call === "function") ? call : self;
};





var slicedToArray = function () {
  function sliceIterator(arr, i) {
    var _arr = [];
    var _n = true;
    var _d = false;
    var _e = undefined;

    try {
      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
        _arr.push(_s.value);

        if (i && _arr.length === i) break;
      }
    } catch (err) {
      _d = true;
      _e = err;
    } finally {
      try {
        if (!_n && _i["return"]) _i["return"]();
      } finally {
        if (_d) throw _e;
      }
    }

    return _arr;
  }

  return function (arr, i) {
    if (Array.isArray(arr)) {
      return arr;
    } else if (Symbol.iterator in Object(arr)) {
      return sliceIterator(arr, i);
    } else {
      throw new TypeError("Invalid attempt to destructure non-iterable instance");
    }
  };
}();













var toConsumableArray = function (arr) {
  if (Array.isArray(arr)) {
    for (var i = 0, arr2 = Array(arr.length); i < arr.length; i++) arr2[i] = arr[i];

    return arr2;
  } else {
    return Array.from(arr);
  }
};

/** Detect free variable `global` from Node.js. */
var freeGlobal = (typeof global === 'undefined' ? 'undefined' : _typeof(global)) == 'object' && global && global.Object === Object && global;

/** Detect free variable `self`. */
var freeSelf = (typeof self === 'undefined' ? 'undefined' : _typeof(self)) == 'object' && self && self.Object === Object && self;

/** Used as a reference to the global object. */
var root = freeGlobal || freeSelf || Function('return this')();

/** Built-in value references. */
var _Symbol = root.Symbol;

/** Used for built-in method references. */
var objectProto = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty = objectProto.hasOwnProperty;

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
 * of values.
 */
var nativeObjectToString = objectProto.toString;

/** Built-in value references. */
var symToStringTag$1 = _Symbol ? _Symbol.toStringTag : undefined;

/**
 * A specialized version of `baseGetTag` which ignores `Symbol.toStringTag` values.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the raw `toStringTag`.
 */
function getRawTag(value) {
  var isOwn = hasOwnProperty.call(value, symToStringTag$1),
      tag = value[symToStringTag$1];

  try {
    value[symToStringTag$1] = undefined;
    var unmasked = true;
  } catch (e) {}

  var result = nativeObjectToString.call(value);
  if (unmasked) {
    if (isOwn) {
      value[symToStringTag$1] = tag;
    } else {
      delete value[symToStringTag$1];
    }
  }
  return result;
}

/** Used for built-in method references. */
var objectProto$1 = Object.prototype;

/**
 * Used to resolve the
 * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
 * of values.
 */
var nativeObjectToString$1 = objectProto$1.toString;

/**
 * Converts `value` to a string using `Object.prototype.toString`.
 *
 * @private
 * @param {*} value The value to convert.
 * @returns {string} Returns the converted string.
 */
function objectToString(value) {
  return nativeObjectToString$1.call(value);
}

/** `Object#toString` result references. */
var nullTag = '[object Null]';
var undefinedTag = '[object Undefined]';

/** Built-in value references. */
var symToStringTag = _Symbol ? _Symbol.toStringTag : undefined;

/**
 * The base implementation of `getTag` without fallbacks for buggy environments.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the `toStringTag`.
 */
function baseGetTag(value) {
  if (value == null) {
    return value === undefined ? undefinedTag : nullTag;
  }
  return symToStringTag && symToStringTag in Object(value) ? getRawTag(value) : objectToString(value);
}

/**
 * Checks if `value` is object-like. A value is object-like if it's not `null`
 * and has a `typeof` result of "object".
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
 * @example
 *
 * _.isObjectLike({});
 * // => true
 *
 * _.isObjectLike([1, 2, 3]);
 * // => true
 *
 * _.isObjectLike(_.noop);
 * // => false
 *
 * _.isObjectLike(null);
 * // => false
 */
function isObjectLike(value) {
  return value != null && (typeof value === 'undefined' ? 'undefined' : _typeof(value)) == 'object';
}

/** `Object#toString` result references. */
var symbolTag = '[object Symbol]';

/**
 * Checks if `value` is classified as a `Symbol` primitive or object.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
 * @example
 *
 * _.isSymbol(Symbol.iterator);
 * // => true
 *
 * _.isSymbol('abc');
 * // => false
 */
function isSymbol(value) {
  return (typeof value === 'undefined' ? 'undefined' : _typeof(value)) == 'symbol' || isObjectLike(value) && baseGetTag(value) == symbolTag;
}

/** Used as references for various `Number` constants. */
var NAN = 0 / 0;

/**
 * The base implementation of `_.toNumber` which doesn't ensure correct
 * conversions of binary, hexadecimal, or octal string values.
 *
 * @private
 * @param {*} value The value to process.
 * @returns {number} Returns the number.
 */
function baseToNumber(value) {
  if (typeof value == 'number') {
    return value;
  }
  if (isSymbol(value)) {
    return NAN;
  }
  return +value;
}

/**
 * A specialized version of `_.map` for arrays without support for iteratee
 * shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the new mapped array.
 */
function arrayMap(array, iteratee) {
  var index = -1,
      length = array == null ? 0 : array.length,
      result = Array(length);

  while (++index < length) {
    result[index] = iteratee(array[index], index, array);
  }
  return result;
}

/**
 * Checks if `value` is classified as an `Array` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array, else `false`.
 * @example
 *
 * _.isArray([1, 2, 3]);
 * // => true
 *
 * _.isArray(document.body.children);
 * // => false
 *
 * _.isArray('abc');
 * // => false
 *
 * _.isArray(_.noop);
 * // => false
 */
var isArray = Array.isArray;

/** Used as references for various `Number` constants. */
var INFINITY = 1 / 0;

/** Used to convert symbols to primitives and strings. */
var symbolProto = _Symbol ? _Symbol.prototype : undefined;
var symbolToString = symbolProto ? symbolProto.toString : undefined;

/**
 * The base implementation of `_.toString` which doesn't convert nullish
 * values to empty strings.
 *
 * @private
 * @param {*} value The value to process.
 * @returns {string} Returns the string.
 */
function baseToString(value) {
  // Exit early for strings to avoid a performance hit in some environments.
  if (typeof value == 'string') {
    return value;
  }
  if (isArray(value)) {
    // Recursively convert values (susceptible to call stack limits).
    return arrayMap(value, baseToString) + '';
  }
  if (isSymbol(value)) {
    return symbolToString ? symbolToString.call(value) : '';
  }
  var result = value + '';
  return result == '0' && 1 / value == -INFINITY ? '-0' : result;
}

/**
 * Creates a function that performs a mathematical operation on two values.
 *
 * @private
 * @param {Function} operator The function to perform the operation.
 * @param {number} [defaultValue] The value used for `undefined` arguments.
 * @returns {Function} Returns the new mathematical operation function.
 */
function createMathOperation(operator, defaultValue) {
  return function (value, other) {
    var result;
    if (value === undefined && other === undefined) {
      return defaultValue;
    }
    if (value !== undefined) {
      result = value;
    }
    if (other !== undefined) {
      if (result === undefined) {
        return other;
      }
      if (typeof value == 'string' || typeof other == 'string') {
        value = baseToString(value);
        other = baseToString(other);
      } else {
        value = baseToNumber(value);
        other = baseToNumber(other);
      }
      result = operator(value, other);
    }
    return result;
  };
}

/**
 * Adds two numbers.
 *
 * @static
 * @memberOf _
 * @since 3.4.0
 * @category Math
 * @param {number} augend The first number in an addition.
 * @param {number} addend The second number in an addition.
 * @returns {number} Returns the total.
 * @example
 *
 * _.add(6, 4);
 * // => 10
 */
var add = createMathOperation(function (augend, addend) {
  return augend + addend;
}, 0);

/**
 * Checks if `value` is the
 * [language type](http://www.ecma-international.org/ecma-262/7.0/#sec-ecmascript-language-types)
 * of `Object`. (e.g. arrays, functions, objects, regexes, `new Number(0)`, and `new String('')`)
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an object, else `false`.
 * @example
 *
 * _.isObject({});
 * // => true
 *
 * _.isObject([1, 2, 3]);
 * // => true
 *
 * _.isObject(_.noop);
 * // => true
 *
 * _.isObject(null);
 * // => false
 */
function isObject(value) {
  var type = typeof value === 'undefined' ? 'undefined' : _typeof(value);
  return value != null && (type == 'object' || type == 'function');
}

/** Used as references for various `Number` constants. */
var NAN$1 = 0 / 0;

/** Used to match leading and trailing whitespace. */
var reTrim = /^\s+|\s+$/g;

/** Used to detect bad signed hexadecimal string values. */
var reIsBadHex = /^[-+]0x[0-9a-f]+$/i;

/** Used to detect binary string values. */
var reIsBinary = /^0b[01]+$/i;

/** Used to detect octal string values. */
var reIsOctal = /^0o[0-7]+$/i;

/** Built-in method references without a dependency on `root`. */
var freeParseInt = parseInt;

/**
 * Converts `value` to a number.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to process.
 * @returns {number} Returns the number.
 * @example
 *
 * _.toNumber(3.2);
 * // => 3.2
 *
 * _.toNumber(Number.MIN_VALUE);
 * // => 5e-324
 *
 * _.toNumber(Infinity);
 * // => Infinity
 *
 * _.toNumber('3.2');
 * // => 3.2
 */
function toNumber(value) {
  if (typeof value == 'number') {
    return value;
  }
  if (isSymbol(value)) {
    return NAN$1;
  }
  if (isObject(value)) {
    var other = typeof value.valueOf == 'function' ? value.valueOf() : value;
    value = isObject(other) ? other + '' : other;
  }
  if (typeof value != 'string') {
    return value === 0 ? value : +value;
  }
  value = value.replace(reTrim, '');
  var isBinary = reIsBinary.test(value);
  return isBinary || reIsOctal.test(value) ? freeParseInt(value.slice(2), isBinary ? 2 : 8) : reIsBadHex.test(value) ? NAN$1 : +value;
}

/** Used as references for various `Number` constants. */
var INFINITY$1 = 1 / 0;
var MAX_INTEGER = 1.7976931348623157e+308;

/**
 * Converts `value` to a finite number.
 *
 * @static
 * @memberOf _
 * @since 4.12.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {number} Returns the converted number.
 * @example
 *
 * _.toFinite(3.2);
 * // => 3.2
 *
 * _.toFinite(Number.MIN_VALUE);
 * // => 5e-324
 *
 * _.toFinite(Infinity);
 * // => 1.7976931348623157e+308
 *
 * _.toFinite('3.2');
 * // => 3.2
 */
function toFinite(value) {
  if (!value) {
    return value === 0 ? value : 0;
  }
  value = toNumber(value);
  if (value === INFINITY$1 || value === -INFINITY$1) {
    var sign = value < 0 ? -1 : 1;
    return sign * MAX_INTEGER;
  }
  return value === value ? value : 0;
}

/**
 * Converts `value` to an integer.
 *
 * **Note:** This method is loosely based on
 * [`ToInteger`](http://www.ecma-international.org/ecma-262/7.0/#sec-tointeger).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {number} Returns the converted integer.
 * @example
 *
 * _.toInteger(3.2);
 * // => 3
 *
 * _.toInteger(Number.MIN_VALUE);
 * // => 0
 *
 * _.toInteger(Infinity);
 * // => 1.7976931348623157e+308
 *
 * _.toInteger('3.2');
 * // => 3
 */
function toInteger(value) {
  var result = toFinite(value),
      remainder = result % 1;

  return result === result ? remainder ? result - remainder : result : 0;
}

/** Error message constants. */
var FUNC_ERROR_TEXT = 'Expected a function';

/**
 * The opposite of `_.before`; this method creates a function that invokes
 * `func` once it's called `n` or more times.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {number} n The number of calls before `func` is invoked.
 * @param {Function} func The function to restrict.
 * @returns {Function} Returns the new restricted function.
 * @example
 *
 * var saves = ['profile', 'settings'];
 *
 * var done = _.after(saves.length, function() {
 *   console.log('done saving!');
 * });
 *
 * _.forEach(saves, function(type) {
 *   asyncSave({ 'type': type, 'complete': done });
 * });
 * // => Logs 'done saving!' after the two async saves have completed.
 */
function after(n, func) {
  if (typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT);
  }
  n = toInteger(n);
  return function () {
    if (--n < 1) {
      return func.apply(this, arguments);
    }
  };
}

/**
 * This method returns the first argument it receives.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Util
 * @param {*} value Any value.
 * @returns {*} Returns `value`.
 * @example
 *
 * var object = { 'a': 1 };
 *
 * console.log(_.identity(object) === object);
 * // => true
 */
function identity(value) {
  return value;
}

/** `Object#toString` result references. */
var asyncTag = '[object AsyncFunction]';
var funcTag = '[object Function]';
var genTag = '[object GeneratorFunction]';
var proxyTag = '[object Proxy]';

/**
 * Checks if `value` is classified as a `Function` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a function, else `false`.
 * @example
 *
 * _.isFunction(_);
 * // => true
 *
 * _.isFunction(/abc/);
 * // => false
 */
function isFunction(value) {
  if (!isObject(value)) {
    return false;
  }
  // The use of `Object#toString` avoids issues with the `typeof` operator
  // in Safari 9 which returns 'object' for typed arrays and other constructors.
  var tag = baseGetTag(value);
  return tag == funcTag || tag == genTag || tag == asyncTag || tag == proxyTag;
}

/** Used to detect overreaching core-js shims. */
var coreJsData = root['__core-js_shared__'];

/** Used to detect methods masquerading as native. */
var maskSrcKey = function () {
  var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
  return uid ? 'Symbol(src)_1.' + uid : '';
}();

/**
 * Checks if `func` has its source masked.
 *
 * @private
 * @param {Function} func The function to check.
 * @returns {boolean} Returns `true` if `func` is masked, else `false`.
 */
function isMasked(func) {
  return !!maskSrcKey && maskSrcKey in func;
}

/** Used for built-in method references. */
var funcProto$1 = Function.prototype;

/** Used to resolve the decompiled source of functions. */
var funcToString$1 = funcProto$1.toString;

/**
 * Converts `func` to its source code.
 *
 * @private
 * @param {Function} func The function to convert.
 * @returns {string} Returns the source code.
 */
function toSource(func) {
  if (func != null) {
    try {
      return funcToString$1.call(func);
    } catch (e) {}
    try {
      return func + '';
    } catch (e) {}
  }
  return '';
}

/**
 * Used to match `RegExp`
 * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
 */
var reRegExpChar = /[\\^$.*+?()[\]{}|]/g;

/** Used to detect host constructors (Safari). */
var reIsHostCtor = /^\[object .+?Constructor\]$/;

/** Used for built-in method references. */
var funcProto = Function.prototype;
var objectProto$2 = Object.prototype;

/** Used to resolve the decompiled source of functions. */
var funcToString = funcProto.toString;

/** Used to check objects for own properties. */
var hasOwnProperty$1 = objectProto$2.hasOwnProperty;

/** Used to detect if a method is native. */
var reIsNative = RegExp('^' + funcToString.call(hasOwnProperty$1).replace(reRegExpChar, '\\$&').replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$');

/**
 * The base implementation of `_.isNative` without bad shim checks.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a native function,
 *  else `false`.
 */
function baseIsNative(value) {
  if (!isObject(value) || isMasked(value)) {
    return false;
  }
  var pattern = isFunction(value) ? reIsNative : reIsHostCtor;
  return pattern.test(toSource(value));
}

/**
 * Gets the value at `key` of `object`.
 *
 * @private
 * @param {Object} [object] The object to query.
 * @param {string} key The key of the property to get.
 * @returns {*} Returns the property value.
 */
function getValue(object, key) {
  return object == null ? undefined : object[key];
}

/**
 * Gets the native function at `key` of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {string} key The key of the method to get.
 * @returns {*} Returns the function if it's native, else `undefined`.
 */
function getNative(object, key) {
  var value = getValue(object, key);
  return baseIsNative(value) ? value : undefined;
}

/* Built-in method references that are verified to be native. */
var WeakMap = getNative(root, 'WeakMap');

/** Used to store function metadata. */
var metaMap = WeakMap && new WeakMap();

/**
 * The base implementation of `setData` without support for hot loop shorting.
 *
 * @private
 * @param {Function} func The function to associate metadata with.
 * @param {*} data The metadata.
 * @returns {Function} Returns `func`.
 */
var baseSetData = !metaMap ? identity : function (func, data) {
  metaMap.set(func, data);
  return func;
};

/** Built-in value references. */
var objectCreate = Object.create;

/**
 * The base implementation of `_.create` without support for assigning
 * properties to the created object.
 *
 * @private
 * @param {Object} proto The object to inherit from.
 * @returns {Object} Returns the new object.
 */
var baseCreate = function () {
  function object() {}
  return function (proto) {
    if (!isObject(proto)) {
      return {};
    }
    if (objectCreate) {
      return objectCreate(proto);
    }
    object.prototype = proto;
    var result = new object();
    object.prototype = undefined;
    return result;
  };
}();

/**
 * Creates a function that produces an instance of `Ctor` regardless of
 * whether it was invoked as part of a `new` expression or by `call` or `apply`.
 *
 * @private
 * @param {Function} Ctor The constructor to wrap.
 * @returns {Function} Returns the new wrapped function.
 */
function createCtor(Ctor) {
  return function () {
    // Use a `switch` statement to work with class constructors. See
    // http://ecma-international.org/ecma-262/7.0/#sec-ecmascript-function-objects-call-thisargument-argumentslist
    // for more details.
    var args = arguments;
    switch (args.length) {
      case 0:
        return new Ctor();
      case 1:
        return new Ctor(args[0]);
      case 2:
        return new Ctor(args[0], args[1]);
      case 3:
        return new Ctor(args[0], args[1], args[2]);
      case 4:
        return new Ctor(args[0], args[1], args[2], args[3]);
      case 5:
        return new Ctor(args[0], args[1], args[2], args[3], args[4]);
      case 6:
        return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5]);
      case 7:
        return new Ctor(args[0], args[1], args[2], args[3], args[4], args[5], args[6]);
    }
    var thisBinding = baseCreate(Ctor.prototype),
        result = Ctor.apply(thisBinding, args);

    // Mimic the constructor's `return` behavior.
    // See https://es5.github.io/#x13.2.2 for more details.
    return isObject(result) ? result : thisBinding;
  };
}

/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_FLAG$1 = 1;

/**
 * Creates a function that wraps `func` to invoke it with the optional `this`
 * binding of `thisArg`.
 *
 * @private
 * @param {Function} func The function to wrap.
 * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
 * @param {*} [thisArg] The `this` binding of `func`.
 * @returns {Function} Returns the new wrapped function.
 */
function createBind(func, bitmask, thisArg) {
  var isBind = bitmask & WRAP_BIND_FLAG$1,
      Ctor = createCtor(func);

  function wrapper() {
    var fn = this && this !== root && this instanceof wrapper ? Ctor : func;
    return fn.apply(isBind ? thisArg : this, arguments);
  }
  return wrapper;
}

/**
 * A faster alternative to `Function#apply`, this function invokes `func`
 * with the `this` binding of `thisArg` and the arguments of `args`.
 *
 * @private
 * @param {Function} func The function to invoke.
 * @param {*} thisArg The `this` binding of `func`.
 * @param {Array} args The arguments to invoke `func` with.
 * @returns {*} Returns the result of `func`.
 */
function apply(func, thisArg, args) {
  switch (args.length) {
    case 0:
      return func.call(thisArg);
    case 1:
      return func.call(thisArg, args[0]);
    case 2:
      return func.call(thisArg, args[0], args[1]);
    case 3:
      return func.call(thisArg, args[0], args[1], args[2]);
  }
  return func.apply(thisArg, args);
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$1 = Math.max;

/**
 * Creates an array that is the composition of partially applied arguments,
 * placeholders, and provided arguments into a single array of arguments.
 *
 * @private
 * @param {Array} args The provided arguments.
 * @param {Array} partials The arguments to prepend to those provided.
 * @param {Array} holders The `partials` placeholder indexes.
 * @params {boolean} [isCurried] Specify composing for a curried function.
 * @returns {Array} Returns the new array of composed arguments.
 */
function composeArgs(args, partials, holders, isCurried) {
  var argsIndex = -1,
      argsLength = args.length,
      holdersLength = holders.length,
      leftIndex = -1,
      leftLength = partials.length,
      rangeLength = nativeMax$1(argsLength - holdersLength, 0),
      result = Array(leftLength + rangeLength),
      isUncurried = !isCurried;

  while (++leftIndex < leftLength) {
    result[leftIndex] = partials[leftIndex];
  }
  while (++argsIndex < holdersLength) {
    if (isUncurried || argsIndex < argsLength) {
      result[holders[argsIndex]] = args[argsIndex];
    }
  }
  while (rangeLength--) {
    result[leftIndex++] = args[argsIndex++];
  }
  return result;
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$2 = Math.max;

/**
 * This function is like `composeArgs` except that the arguments composition
 * is tailored for `_.partialRight`.
 *
 * @private
 * @param {Array} args The provided arguments.
 * @param {Array} partials The arguments to append to those provided.
 * @param {Array} holders The `partials` placeholder indexes.
 * @params {boolean} [isCurried] Specify composing for a curried function.
 * @returns {Array} Returns the new array of composed arguments.
 */
function composeArgsRight(args, partials, holders, isCurried) {
  var argsIndex = -1,
      argsLength = args.length,
      holdersIndex = -1,
      holdersLength = holders.length,
      rightIndex = -1,
      rightLength = partials.length,
      rangeLength = nativeMax$2(argsLength - holdersLength, 0),
      result = Array(rangeLength + rightLength),
      isUncurried = !isCurried;

  while (++argsIndex < rangeLength) {
    result[argsIndex] = args[argsIndex];
  }
  var offset = argsIndex;
  while (++rightIndex < rightLength) {
    result[offset + rightIndex] = partials[rightIndex];
  }
  while (++holdersIndex < holdersLength) {
    if (isUncurried || argsIndex < argsLength) {
      result[offset + holders[holdersIndex]] = args[argsIndex++];
    }
  }
  return result;
}

/**
 * Gets the number of `placeholder` occurrences in `array`.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} placeholder The placeholder to search for.
 * @returns {number} Returns the placeholder count.
 */
function countHolders(array, placeholder) {
  var length = array.length,
      result = 0;

  while (length--) {
    if (array[length] === placeholder) {
      ++result;
    }
  }
  return result;
}

/**
 * The function whose prototype chain sequence wrappers inherit from.
 *
 * @private
 */
function baseLodash() {
  // No operation performed.
}

/** Used as references for the maximum length and index of an array. */
var MAX_ARRAY_LENGTH = 4294967295;

/**
 * Creates a lazy wrapper object which wraps `value` to enable lazy evaluation.
 *
 * @private
 * @constructor
 * @param {*} value The value to wrap.
 */
function LazyWrapper(value) {
  this.__wrapped__ = value;
  this.__actions__ = [];
  this.__dir__ = 1;
  this.__filtered__ = false;
  this.__iteratees__ = [];
  this.__takeCount__ = MAX_ARRAY_LENGTH;
  this.__views__ = [];
}

// Ensure `LazyWrapper` is an instance of `baseLodash`.
LazyWrapper.prototype = baseCreate(baseLodash.prototype);
LazyWrapper.prototype.constructor = LazyWrapper;

/**
 * This method returns `undefined`.
 *
 * @static
 * @memberOf _
 * @since 2.3.0
 * @category Util
 * @example
 *
 * _.times(2, _.noop);
 * // => [undefined, undefined]
 */
function noop() {
  // No operation performed.
}

/**
 * Gets metadata for `func`.
 *
 * @private
 * @param {Function} func The function to query.
 * @returns {*} Returns the metadata for `func`.
 */
var getData = !metaMap ? noop : function (func) {
  return metaMap.get(func);
};

/** Used to lookup unminified function names. */
var realNames = {};

/** Used for built-in method references. */
var objectProto$3 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$2 = objectProto$3.hasOwnProperty;

/**
 * Gets the name of `func`.
 *
 * @private
 * @param {Function} func The function to query.
 * @returns {string} Returns the function name.
 */
function getFuncName(func) {
  var result = func.name + '',
      array = realNames[result],
      length = hasOwnProperty$2.call(realNames, result) ? array.length : 0;

  while (length--) {
    var data = array[length],
        otherFunc = data.func;
    if (otherFunc == null || otherFunc == func) {
      return data.name;
    }
  }
  return result;
}

/**
 * The base constructor for creating `lodash` wrapper objects.
 *
 * @private
 * @param {*} value The value to wrap.
 * @param {boolean} [chainAll] Enable explicit method chain sequences.
 */
function LodashWrapper(value, chainAll) {
  this.__wrapped__ = value;
  this.__actions__ = [];
  this.__chain__ = !!chainAll;
  this.__index__ = 0;
  this.__values__ = undefined;
}

LodashWrapper.prototype = baseCreate(baseLodash.prototype);
LodashWrapper.prototype.constructor = LodashWrapper;

/**
 * Copies the values of `source` to `array`.
 *
 * @private
 * @param {Array} source The array to copy values from.
 * @param {Array} [array=[]] The array to copy values to.
 * @returns {Array} Returns `array`.
 */
function copyArray(source, array) {
  var index = -1,
      length = source.length;

  array || (array = Array(length));
  while (++index < length) {
    array[index] = source[index];
  }
  return array;
}

/**
 * Creates a clone of `wrapper`.
 *
 * @private
 * @param {Object} wrapper The wrapper to clone.
 * @returns {Object} Returns the cloned wrapper.
 */
function wrapperClone(wrapper) {
  if (wrapper instanceof LazyWrapper) {
    return wrapper.clone();
  }
  var result = new LodashWrapper(wrapper.__wrapped__, wrapper.__chain__);
  result.__actions__ = copyArray(wrapper.__actions__);
  result.__index__ = wrapper.__index__;
  result.__values__ = wrapper.__values__;
  return result;
}

/** Used for built-in method references. */
var objectProto$4 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$3 = objectProto$4.hasOwnProperty;

/**
 * Creates a `lodash` object which wraps `value` to enable implicit method
 * chain sequences. Methods that operate on and return arrays, collections,
 * and functions can be chained together. Methods that retrieve a single value
 * or may return a primitive value will automatically end the chain sequence
 * and return the unwrapped value. Otherwise, the value must be unwrapped
 * with `_#value`.
 *
 * Explicit chain sequences, which must be unwrapped with `_#value`, may be
 * enabled using `_.chain`.
 *
 * The execution of chained methods is lazy, that is, it's deferred until
 * `_#value` is implicitly or explicitly called.
 *
 * Lazy evaluation allows several methods to support shortcut fusion.
 * Shortcut fusion is an optimization to merge iteratee calls; this avoids
 * the creation of intermediate arrays and can greatly reduce the number of
 * iteratee executions. Sections of a chain sequence qualify for shortcut
 * fusion if the section is applied to an array and iteratees accept only
 * one argument. The heuristic for whether a section qualifies for shortcut
 * fusion is subject to change.
 *
 * Chaining is supported in custom builds as long as the `_#value` method is
 * directly or indirectly included in the build.
 *
 * In addition to lodash methods, wrappers have `Array` and `String` methods.
 *
 * The wrapper `Array` methods are:
 * `concat`, `join`, `pop`, `push`, `shift`, `sort`, `splice`, and `unshift`
 *
 * The wrapper `String` methods are:
 * `replace` and `split`
 *
 * The wrapper methods that support shortcut fusion are:
 * `at`, `compact`, `drop`, `dropRight`, `dropWhile`, `filter`, `find`,
 * `findLast`, `head`, `initial`, `last`, `map`, `reject`, `reverse`, `slice`,
 * `tail`, `take`, `takeRight`, `takeRightWhile`, `takeWhile`, and `toArray`
 *
 * The chainable wrapper methods are:
 * `after`, `ary`, `assign`, `assignIn`, `assignInWith`, `assignWith`, `at`,
 * `before`, `bind`, `bindAll`, `bindKey`, `castArray`, `chain`, `chunk`,
 * `commit`, `compact`, `concat`, `conforms`, `constant`, `countBy`, `create`,
 * `curry`, `debounce`, `defaults`, `defaultsDeep`, `defer`, `delay`,
 * `difference`, `differenceBy`, `differenceWith`, `drop`, `dropRight`,
 * `dropRightWhile`, `dropWhile`, `extend`, `extendWith`, `fill`, `filter`,
 * `flatMap`, `flatMapDeep`, `flatMapDepth`, `flatten`, `flattenDeep`,
 * `flattenDepth`, `flip`, `flow`, `flowRight`, `fromPairs`, `functions`,
 * `functionsIn`, `groupBy`, `initial`, `intersection`, `intersectionBy`,
 * `intersectionWith`, `invert`, `invertBy`, `invokeMap`, `iteratee`, `keyBy`,
 * `keys`, `keysIn`, `map`, `mapKeys`, `mapValues`, `matches`, `matchesProperty`,
 * `memoize`, `merge`, `mergeWith`, `method`, `methodOf`, `mixin`, `negate`,
 * `nthArg`, `omit`, `omitBy`, `once`, `orderBy`, `over`, `overArgs`,
 * `overEvery`, `overSome`, `partial`, `partialRight`, `partition`, `pick`,
 * `pickBy`, `plant`, `property`, `propertyOf`, `pull`, `pullAll`, `pullAllBy`,
 * `pullAllWith`, `pullAt`, `push`, `range`, `rangeRight`, `rearg`, `reject`,
 * `remove`, `rest`, `reverse`, `sampleSize`, `set`, `setWith`, `shuffle`,
 * `slice`, `sort`, `sortBy`, `splice`, `spread`, `tail`, `take`, `takeRight`,
 * `takeRightWhile`, `takeWhile`, `tap`, `throttle`, `thru`, `toArray`,
 * `toPairs`, `toPairsIn`, `toPath`, `toPlainObject`, `transform`, `unary`,
 * `union`, `unionBy`, `unionWith`, `uniq`, `uniqBy`, `uniqWith`, `unset`,
 * `unshift`, `unzip`, `unzipWith`, `update`, `updateWith`, `values`,
 * `valuesIn`, `without`, `wrap`, `xor`, `xorBy`, `xorWith`, `zip`,
 * `zipObject`, `zipObjectDeep`, and `zipWith`
 *
 * The wrapper methods that are **not** chainable by default are:
 * `add`, `attempt`, `camelCase`, `capitalize`, `ceil`, `clamp`, `clone`,
 * `cloneDeep`, `cloneDeepWith`, `cloneWith`, `conformsTo`, `deburr`,
 * `defaultTo`, `divide`, `each`, `eachRight`, `endsWith`, `eq`, `escape`,
 * `escapeRegExp`, `every`, `find`, `findIndex`, `findKey`, `findLast`,
 * `findLastIndex`, `findLastKey`, `first`, `floor`, `forEach`, `forEachRight`,
 * `forIn`, `forInRight`, `forOwn`, `forOwnRight`, `get`, `gt`, `gte`, `has`,
 * `hasIn`, `head`, `identity`, `includes`, `indexOf`, `inRange`, `invoke`,
 * `isArguments`, `isArray`, `isArrayBuffer`, `isArrayLike`, `isArrayLikeObject`,
 * `isBoolean`, `isBuffer`, `isDate`, `isElement`, `isEmpty`, `isEqual`,
 * `isEqualWith`, `isError`, `isFinite`, `isFunction`, `isInteger`, `isLength`,
 * `isMap`, `isMatch`, `isMatchWith`, `isNaN`, `isNative`, `isNil`, `isNull`,
 * `isNumber`, `isObject`, `isObjectLike`, `isPlainObject`, `isRegExp`,
 * `isSafeInteger`, `isSet`, `isString`, `isUndefined`, `isTypedArray`,
 * `isWeakMap`, `isWeakSet`, `join`, `kebabCase`, `last`, `lastIndexOf`,
 * `lowerCase`, `lowerFirst`, `lt`, `lte`, `max`, `maxBy`, `mean`, `meanBy`,
 * `min`, `minBy`, `multiply`, `noConflict`, `noop`, `now`, `nth`, `pad`,
 * `padEnd`, `padStart`, `parseInt`, `pop`, `random`, `reduce`, `reduceRight`,
 * `repeat`, `result`, `round`, `runInContext`, `sample`, `shift`, `size`,
 * `snakeCase`, `some`, `sortedIndex`, `sortedIndexBy`, `sortedLastIndex`,
 * `sortedLastIndexBy`, `startCase`, `startsWith`, `stubArray`, `stubFalse`,
 * `stubObject`, `stubString`, `stubTrue`, `subtract`, `sum`, `sumBy`,
 * `template`, `times`, `toFinite`, `toInteger`, `toJSON`, `toLength`,
 * `toLower`, `toNumber`, `toSafeInteger`, `toString`, `toUpper`, `trim`,
 * `trimEnd`, `trimStart`, `truncate`, `unescape`, `uniqueId`, `upperCase`,
 * `upperFirst`, `value`, and `words`
 *
 * @name _
 * @constructor
 * @category Seq
 * @param {*} value The value to wrap in a `lodash` instance.
 * @returns {Object} Returns the new `lodash` wrapper instance.
 * @example
 *
 * function square(n) {
 *   return n * n;
 * }
 *
 * var wrapped = _([1, 2, 3]);
 *
 * // Returns an unwrapped value.
 * wrapped.reduce(_.add);
 * // => 6
 *
 * // Returns a wrapped value.
 * var squares = wrapped.map(square);
 *
 * _.isArray(squares);
 * // => false
 *
 * _.isArray(squares.value());
 * // => true
 */
function lodash(value) {
  if (isObjectLike(value) && !isArray(value) && !(value instanceof LazyWrapper)) {
    if (value instanceof LodashWrapper) {
      return value;
    }
    if (hasOwnProperty$3.call(value, '__wrapped__')) {
      return wrapperClone(value);
    }
  }
  return new LodashWrapper(value);
}

// Ensure wrappers are instances of `baseLodash`.
lodash.prototype = baseLodash.prototype;
lodash.prototype.constructor = lodash;

/**
 * Checks if `func` has a lazy counterpart.
 *
 * @private
 * @param {Function} func The function to check.
 * @returns {boolean} Returns `true` if `func` has a lazy counterpart,
 *  else `false`.
 */
function isLaziable(func) {
  var funcName = getFuncName(func),
      other = lodash[funcName];

  if (typeof other != 'function' || !(funcName in LazyWrapper.prototype)) {
    return false;
  }
  if (func === other) {
    return true;
  }
  var data = getData(other);
  return !!data && func === data[0];
}

/** Used to detect hot functions by number of calls within a span of milliseconds. */
var HOT_COUNT = 800;
var HOT_SPAN = 16;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeNow = Date.now;

/**
 * Creates a function that'll short out and invoke `identity` instead
 * of `func` when it's called `HOT_COUNT` or more times in `HOT_SPAN`
 * milliseconds.
 *
 * @private
 * @param {Function} func The function to restrict.
 * @returns {Function} Returns the new shortable function.
 */
function shortOut(func) {
  var count = 0,
      lastCalled = 0;

  return function () {
    var stamp = nativeNow(),
        remaining = HOT_SPAN - (stamp - lastCalled);

    lastCalled = stamp;
    if (remaining > 0) {
      if (++count >= HOT_COUNT) {
        return arguments[0];
      }
    } else {
      count = 0;
    }
    return func.apply(undefined, arguments);
  };
}

/**
 * Sets metadata for `func`.
 *
 * **Note:** If this function becomes hot, i.e. is invoked a lot in a short
 * period of time, it will trip its breaker and transition to an identity
 * function to avoid garbage collection pauses in V8. See
 * [V8 issue 2070](https://bugs.chromium.org/p/v8/issues/detail?id=2070)
 * for more details.
 *
 * @private
 * @param {Function} func The function to associate metadata with.
 * @param {*} data The metadata.
 * @returns {Function} Returns `func`.
 */
var setData = shortOut(baseSetData);

/** Used to match wrap detail comments. */
var reWrapDetails = /\{\n\/\* \[wrapped with (.+)\] \*/;
var reSplitDetails = /,? & /;

/**
 * Extracts wrapper details from the `source` body comment.
 *
 * @private
 * @param {string} source The source to inspect.
 * @returns {Array} Returns the wrapper details.
 */
function getWrapDetails(source) {
  var match = source.match(reWrapDetails);
  return match ? match[1].split(reSplitDetails) : [];
}

/** Used to match wrap detail comments. */
var reWrapComment = /\{(?:\n\/\* \[wrapped with .+\] \*\/)?\n?/;

/**
 * Inserts wrapper `details` in a comment at the top of the `source` body.
 *
 * @private
 * @param {string} source The source to modify.
 * @returns {Array} details The details to insert.
 * @returns {string} Returns the modified source.
 */
function insertWrapDetails(source, details) {
  var length = details.length;
  if (!length) {
    return source;
  }
  var lastIndex = length - 1;
  details[lastIndex] = (length > 1 ? '& ' : '') + details[lastIndex];
  details = details.join(length > 2 ? ', ' : ' ');
  return source.replace(reWrapComment, '{\n/* [wrapped with ' + details + '] */\n');
}

/**
 * Creates a function that returns `value`.
 *
 * @static
 * @memberOf _
 * @since 2.4.0
 * @category Util
 * @param {*} value The value to return from the new function.
 * @returns {Function} Returns the new constant function.
 * @example
 *
 * var objects = _.times(2, _.constant({ 'a': 1 }));
 *
 * console.log(objects);
 * // => [{ 'a': 1 }, { 'a': 1 }]
 *
 * console.log(objects[0] === objects[1]);
 * // => true
 */
function constant(value) {
  return function () {
    return value;
  };
}

var defineProperty$1 = function () {
  try {
    var func = getNative(Object, 'defineProperty');
    func({}, '', {});
    return func;
  } catch (e) {}
}();

/**
 * The base implementation of `setToString` without support for hot loop shorting.
 *
 * @private
 * @param {Function} func The function to modify.
 * @param {Function} string The `toString` result.
 * @returns {Function} Returns `func`.
 */
var baseSetToString = !defineProperty$1 ? identity : function (func, string) {
  return defineProperty$1(func, 'toString', {
    'configurable': true,
    'enumerable': false,
    'value': constant(string),
    'writable': true
  });
};

/**
 * Sets the `toString` method of `func` to return `string`.
 *
 * @private
 * @param {Function} func The function to modify.
 * @param {Function} string The `toString` result.
 * @returns {Function} Returns `func`.
 */
var setToString = shortOut(baseSetToString);

/**
 * A specialized version of `_.forEach` for arrays without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns `array`.
 */
function arrayEach(array, iteratee) {
  var index = -1,
      length = array == null ? 0 : array.length;

  while (++index < length) {
    if (iteratee(array[index], index, array) === false) {
      break;
    }
  }
  return array;
}

/**
 * The base implementation of `_.findIndex` and `_.findLastIndex` without
 * support for iteratee shorthands.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {Function} predicate The function invoked per iteration.
 * @param {number} fromIndex The index to search from.
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function baseFindIndex(array, predicate, fromIndex, fromRight) {
  var length = array.length,
      index = fromIndex + (fromRight ? 1 : -1);

  while (fromRight ? index-- : ++index < length) {
    if (predicate(array[index], index, array)) {
      return index;
    }
  }
  return -1;
}

/**
 * The base implementation of `_.isNaN` without support for number objects.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
 */
function baseIsNaN(value) {
  return value !== value;
}

/**
 * A specialized version of `_.indexOf` which performs strict equality
 * comparisons of values, i.e. `===`.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} value The value to search for.
 * @param {number} fromIndex The index to search from.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function strictIndexOf(array, value, fromIndex) {
  var index = fromIndex - 1,
      length = array.length;

  while (++index < length) {
    if (array[index] === value) {
      return index;
    }
  }
  return -1;
}

/**
 * The base implementation of `_.indexOf` without `fromIndex` bounds checks.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} value The value to search for.
 * @param {number} fromIndex The index to search from.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function baseIndexOf(array, value, fromIndex) {
  return value === value ? strictIndexOf(array, value, fromIndex) : baseFindIndex(array, baseIsNaN, fromIndex);
}

/**
 * A specialized version of `_.includes` for arrays without support for
 * specifying an index to search from.
 *
 * @private
 * @param {Array} [array] The array to inspect.
 * @param {*} target The value to search for.
 * @returns {boolean} Returns `true` if `target` is found, else `false`.
 */
function arrayIncludes(array, value) {
  var length = array == null ? 0 : array.length;
  return !!length && baseIndexOf(array, value, 0) > -1;
}

/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_FLAG$4 = 1;
var WRAP_BIND_KEY_FLAG$3 = 2;
var WRAP_CURRY_FLAG$3 = 8;
var WRAP_CURRY_RIGHT_FLAG$2 = 16;
var WRAP_PARTIAL_FLAG$2 = 32;
var WRAP_PARTIAL_RIGHT_FLAG$2 = 64;
var WRAP_ARY_FLAG$2 = 128;
var WRAP_REARG_FLAG = 256;
var WRAP_FLIP_FLAG$1 = 512;

/** Used to associate wrap methods with their bit flags. */
var wrapFlags = [['ary', WRAP_ARY_FLAG$2], ['bind', WRAP_BIND_FLAG$4], ['bindKey', WRAP_BIND_KEY_FLAG$3], ['curry', WRAP_CURRY_FLAG$3], ['curryRight', WRAP_CURRY_RIGHT_FLAG$2], ['flip', WRAP_FLIP_FLAG$1], ['partial', WRAP_PARTIAL_FLAG$2], ['partialRight', WRAP_PARTIAL_RIGHT_FLAG$2], ['rearg', WRAP_REARG_FLAG]];

/**
 * Updates wrapper `details` based on `bitmask` flags.
 *
 * @private
 * @returns {Array} details The details to modify.
 * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
 * @returns {Array} Returns `details`.
 */
function updateWrapDetails(details, bitmask) {
  arrayEach(wrapFlags, function (pair) {
    var value = '_.' + pair[0];
    if (bitmask & pair[1] && !arrayIncludes(details, value)) {
      details.push(value);
    }
  });
  return details.sort();
}

/**
 * Sets the `toString` method of `wrapper` to mimic the source of `reference`
 * with wrapper details in a comment at the top of the source body.
 *
 * @private
 * @param {Function} wrapper The function to modify.
 * @param {Function} reference The reference function.
 * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
 * @returns {Function} Returns `wrapper`.
 */
function setWrapToString(wrapper, reference, bitmask) {
  var source = reference + '';
  return setToString(wrapper, insertWrapDetails(source, updateWrapDetails(getWrapDetails(source), bitmask)));
}

/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_FLAG$3 = 1;
var WRAP_BIND_KEY_FLAG$2 = 2;
var WRAP_CURRY_BOUND_FLAG = 4;
var WRAP_CURRY_FLAG$2 = 8;
var WRAP_PARTIAL_FLAG$1 = 32;
var WRAP_PARTIAL_RIGHT_FLAG$1 = 64;

/**
 * Creates a function that wraps `func` to continue currying.
 *
 * @private
 * @param {Function} func The function to wrap.
 * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
 * @param {Function} wrapFunc The function to create the `func` wrapper.
 * @param {*} placeholder The placeholder value.
 * @param {*} [thisArg] The `this` binding of `func`.
 * @param {Array} [partials] The arguments to prepend to those provided to
 *  the new function.
 * @param {Array} [holders] The `partials` placeholder indexes.
 * @param {Array} [argPos] The argument positions of the new function.
 * @param {number} [ary] The arity cap of `func`.
 * @param {number} [arity] The arity of `func`.
 * @returns {Function} Returns the new wrapped function.
 */
function createRecurry(func, bitmask, wrapFunc, placeholder, thisArg, partials, holders, argPos, ary, arity) {
  var isCurry = bitmask & WRAP_CURRY_FLAG$2,
      newHolders = isCurry ? holders : undefined,
      newHoldersRight = isCurry ? undefined : holders,
      newPartials = isCurry ? partials : undefined,
      newPartialsRight = isCurry ? undefined : partials;

  bitmask |= isCurry ? WRAP_PARTIAL_FLAG$1 : WRAP_PARTIAL_RIGHT_FLAG$1;
  bitmask &= ~(isCurry ? WRAP_PARTIAL_RIGHT_FLAG$1 : WRAP_PARTIAL_FLAG$1);

  if (!(bitmask & WRAP_CURRY_BOUND_FLAG)) {
    bitmask &= ~(WRAP_BIND_FLAG$3 | WRAP_BIND_KEY_FLAG$2);
  }
  var newData = [func, bitmask, thisArg, newPartials, newHolders, newPartialsRight, newHoldersRight, argPos, ary, arity];

  var result = wrapFunc.apply(undefined, newData);
  if (isLaziable(func)) {
    setData(result, newData);
  }
  result.placeholder = placeholder;
  return setWrapToString(result, func, bitmask);
}

/**
 * Gets the argument placeholder value for `func`.
 *
 * @private
 * @param {Function} func The function to inspect.
 * @returns {*} Returns the placeholder value.
 */
function getHolder(func) {
  var object = func;
  return object.placeholder;
}

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER = 9007199254740991;

/** Used to detect unsigned integer values. */
var reIsUint = /^(?:0|[1-9]\d*)$/;

/**
 * Checks if `value` is a valid array-like index.
 *
 * @private
 * @param {*} value The value to check.
 * @param {number} [length=MAX_SAFE_INTEGER] The upper bounds of a valid index.
 * @returns {boolean} Returns `true` if `value` is a valid index, else `false`.
 */
function isIndex(value, length) {
  length = length == null ? MAX_SAFE_INTEGER : length;
  return !!length && (typeof value == 'number' || reIsUint.test(value)) && value > -1 && value % 1 == 0 && value < length;
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMin = Math.min;

/**
 * Reorder `array` according to the specified indexes where the element at
 * the first index is assigned as the first element, the element at
 * the second index is assigned as the second element, and so on.
 *
 * @private
 * @param {Array} array The array to reorder.
 * @param {Array} indexes The arranged array indexes.
 * @returns {Array} Returns `array`.
 */
function reorder(array, indexes) {
  var arrLength = array.length,
      length = nativeMin(indexes.length, arrLength),
      oldArray = copyArray(array);

  while (length--) {
    var index = indexes[length];
    array[length] = isIndex(index, arrLength) ? oldArray[index] : undefined;
  }
  return array;
}

/** Used as the internal argument placeholder. */
var PLACEHOLDER = '__lodash_placeholder__';

/**
 * Replaces all `placeholder` elements in `array` with an internal placeholder
 * and returns an array of their indexes.
 *
 * @private
 * @param {Array} array The array to modify.
 * @param {*} placeholder The placeholder to replace.
 * @returns {Array} Returns the new array of placeholder indexes.
 */
function replaceHolders(array, placeholder) {
  var index = -1,
      length = array.length,
      resIndex = 0,
      result = [];

  while (++index < length) {
    var value = array[index];
    if (value === placeholder || value === PLACEHOLDER) {
      array[index] = PLACEHOLDER;
      result[resIndex++] = index;
    }
  }
  return result;
}

/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_FLAG$2 = 1;
var WRAP_BIND_KEY_FLAG$1 = 2;
var WRAP_CURRY_FLAG$1 = 8;
var WRAP_CURRY_RIGHT_FLAG$1 = 16;
var WRAP_ARY_FLAG$1 = 128;
var WRAP_FLIP_FLAG = 512;

/**
 * Creates a function that wraps `func` to invoke it with optional `this`
 * binding of `thisArg`, partial application, and currying.
 *
 * @private
 * @param {Function|string} func The function or method name to wrap.
 * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
 * @param {*} [thisArg] The `this` binding of `func`.
 * @param {Array} [partials] The arguments to prepend to those provided to
 *  the new function.
 * @param {Array} [holders] The `partials` placeholder indexes.
 * @param {Array} [partialsRight] The arguments to append to those provided
 *  to the new function.
 * @param {Array} [holdersRight] The `partialsRight` placeholder indexes.
 * @param {Array} [argPos] The argument positions of the new function.
 * @param {number} [ary] The arity cap of `func`.
 * @param {number} [arity] The arity of `func`.
 * @returns {Function} Returns the new wrapped function.
 */
function createHybrid(func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity) {
  var isAry = bitmask & WRAP_ARY_FLAG$1,
      isBind = bitmask & WRAP_BIND_FLAG$2,
      isBindKey = bitmask & WRAP_BIND_KEY_FLAG$1,
      isCurried = bitmask & (WRAP_CURRY_FLAG$1 | WRAP_CURRY_RIGHT_FLAG$1),
      isFlip = bitmask & WRAP_FLIP_FLAG,
      Ctor = isBindKey ? undefined : createCtor(func);

  function wrapper() {
    var length = arguments.length,
        args = Array(length),
        index = length;

    while (index--) {
      args[index] = arguments[index];
    }
    if (isCurried) {
      var placeholder = getHolder(wrapper),
          holdersCount = countHolders(args, placeholder);
    }
    if (partials) {
      args = composeArgs(args, partials, holders, isCurried);
    }
    if (partialsRight) {
      args = composeArgsRight(args, partialsRight, holdersRight, isCurried);
    }
    length -= holdersCount;
    if (isCurried && length < arity) {
      var newHolders = replaceHolders(args, placeholder);
      return createRecurry(func, bitmask, createHybrid, wrapper.placeholder, thisArg, args, newHolders, argPos, ary, arity - length);
    }
    var thisBinding = isBind ? thisArg : this,
        fn = isBindKey ? thisBinding[func] : func;

    length = args.length;
    if (argPos) {
      args = reorder(args, argPos);
    } else if (isFlip && length > 1) {
      args.reverse();
    }
    if (isAry && ary < length) {
      args.length = ary;
    }
    if (this && this !== root && this instanceof wrapper) {
      fn = Ctor || createCtor(fn);
    }
    return fn.apply(thisBinding, args);
  }
  return wrapper;
}

/**
 * Creates a function that wraps `func` to enable currying.
 *
 * @private
 * @param {Function} func The function to wrap.
 * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
 * @param {number} arity The arity of `func`.
 * @returns {Function} Returns the new wrapped function.
 */
function createCurry(func, bitmask, arity) {
  var Ctor = createCtor(func);

  function wrapper() {
    var length = arguments.length,
        args = Array(length),
        index = length,
        placeholder = getHolder(wrapper);

    while (index--) {
      args[index] = arguments[index];
    }
    var holders = length < 3 && args[0] !== placeholder && args[length - 1] !== placeholder ? [] : replaceHolders(args, placeholder);

    length -= holders.length;
    if (length < arity) {
      return createRecurry(func, bitmask, createHybrid, wrapper.placeholder, undefined, args, holders, undefined, undefined, arity - length);
    }
    var fn = this && this !== root && this instanceof wrapper ? Ctor : func;
    return apply(fn, this, args);
  }
  return wrapper;
}

/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_FLAG$5 = 1;

/**
 * Creates a function that wraps `func` to invoke it with the `this` binding
 * of `thisArg` and `partials` prepended to the arguments it receives.
 *
 * @private
 * @param {Function} func The function to wrap.
 * @param {number} bitmask The bitmask flags. See `createWrap` for more details.
 * @param {*} thisArg The `this` binding of `func`.
 * @param {Array} partials The arguments to prepend to those provided to
 *  the new function.
 * @returns {Function} Returns the new wrapped function.
 */
function createPartial(func, bitmask, thisArg, partials) {
  var isBind = bitmask & WRAP_BIND_FLAG$5,
      Ctor = createCtor(func);

  function wrapper() {
    var argsIndex = -1,
        argsLength = arguments.length,
        leftIndex = -1,
        leftLength = partials.length,
        args = Array(leftLength + argsLength),
        fn = this && this !== root && this instanceof wrapper ? Ctor : func;

    while (++leftIndex < leftLength) {
      args[leftIndex] = partials[leftIndex];
    }
    while (argsLength--) {
      args[leftIndex++] = arguments[++argsIndex];
    }
    return apply(fn, isBind ? thisArg : this, args);
  }
  return wrapper;
}

/** Used as the internal argument placeholder. */
var PLACEHOLDER$1 = '__lodash_placeholder__';

/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_FLAG$6 = 1;
var WRAP_BIND_KEY_FLAG$4 = 2;
var WRAP_CURRY_BOUND_FLAG$1 = 4;
var WRAP_CURRY_FLAG$4 = 8;
var WRAP_ARY_FLAG$3 = 128;
var WRAP_REARG_FLAG$1 = 256;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMin$1 = Math.min;

/**
 * Merges the function metadata of `source` into `data`.
 *
 * Merging metadata reduces the number of wrappers used to invoke a function.
 * This is possible because methods like `_.bind`, `_.curry`, and `_.partial`
 * may be applied regardless of execution order. Methods like `_.ary` and
 * `_.rearg` modify function arguments, making the order in which they are
 * executed important, preventing the merging of metadata. However, we make
 * an exception for a safe combined case where curried functions have `_.ary`
 * and or `_.rearg` applied.
 *
 * @private
 * @param {Array} data The destination metadata.
 * @param {Array} source The source metadata.
 * @returns {Array} Returns `data`.
 */
function mergeData(data, source) {
  var bitmask = data[1],
      srcBitmask = source[1],
      newBitmask = bitmask | srcBitmask,
      isCommon = newBitmask < (WRAP_BIND_FLAG$6 | WRAP_BIND_KEY_FLAG$4 | WRAP_ARY_FLAG$3);

  var isCombo = srcBitmask == WRAP_ARY_FLAG$3 && bitmask == WRAP_CURRY_FLAG$4 || srcBitmask == WRAP_ARY_FLAG$3 && bitmask == WRAP_REARG_FLAG$1 && data[7].length <= source[8] || srcBitmask == (WRAP_ARY_FLAG$3 | WRAP_REARG_FLAG$1) && source[7].length <= source[8] && bitmask == WRAP_CURRY_FLAG$4;

  // Exit early if metadata can't be merged.
  if (!(isCommon || isCombo)) {
    return data;
  }
  // Use source `thisArg` if available.
  if (srcBitmask & WRAP_BIND_FLAG$6) {
    data[2] = source[2];
    // Set when currying a bound function.
    newBitmask |= bitmask & WRAP_BIND_FLAG$6 ? 0 : WRAP_CURRY_BOUND_FLAG$1;
  }
  // Compose partial arguments.
  var value = source[3];
  if (value) {
    var partials = data[3];
    data[3] = partials ? composeArgs(partials, value, source[4]) : value;
    data[4] = partials ? replaceHolders(data[3], PLACEHOLDER$1) : source[4];
  }
  // Compose partial right arguments.
  value = source[5];
  if (value) {
    partials = data[5];
    data[5] = partials ? composeArgsRight(partials, value, source[6]) : value;
    data[6] = partials ? replaceHolders(data[5], PLACEHOLDER$1) : source[6];
  }
  // Use source `argPos` if available.
  value = source[7];
  if (value) {
    data[7] = value;
  }
  // Use source `ary` if it's smaller.
  if (srcBitmask & WRAP_ARY_FLAG$3) {
    data[8] = data[8] == null ? source[8] : nativeMin$1(data[8], source[8]);
  }
  // Use source `arity` if one is not provided.
  if (data[9] == null) {
    data[9] = source[9];
  }
  // Use source `func` and merge bitmasks.
  data[0] = source[0];
  data[1] = newBitmask;

  return data;
}

/** Error message constants. */
var FUNC_ERROR_TEXT$1 = 'Expected a function';

/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_FLAG = 1;
var WRAP_BIND_KEY_FLAG = 2;
var WRAP_CURRY_FLAG = 8;
var WRAP_CURRY_RIGHT_FLAG = 16;
var WRAP_PARTIAL_FLAG = 32;
var WRAP_PARTIAL_RIGHT_FLAG = 64;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax = Math.max;

/**
 * Creates a function that either curries or invokes `func` with optional
 * `this` binding and partially applied arguments.
 *
 * @private
 * @param {Function|string} func The function or method name to wrap.
 * @param {number} bitmask The bitmask flags.
 *    1 - `_.bind`
 *    2 - `_.bindKey`
 *    4 - `_.curry` or `_.curryRight` of a bound function
 *    8 - `_.curry`
 *   16 - `_.curryRight`
 *   32 - `_.partial`
 *   64 - `_.partialRight`
 *  128 - `_.rearg`
 *  256 - `_.ary`
 *  512 - `_.flip`
 * @param {*} [thisArg] The `this` binding of `func`.
 * @param {Array} [partials] The arguments to be partially applied.
 * @param {Array} [holders] The `partials` placeholder indexes.
 * @param {Array} [argPos] The argument positions of the new function.
 * @param {number} [ary] The arity cap of `func`.
 * @param {number} [arity] The arity of `func`.
 * @returns {Function} Returns the new wrapped function.
 */
function createWrap(func, bitmask, thisArg, partials, holders, argPos, ary, arity) {
  var isBindKey = bitmask & WRAP_BIND_KEY_FLAG;
  if (!isBindKey && typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT$1);
  }
  var length = partials ? partials.length : 0;
  if (!length) {
    bitmask &= ~(WRAP_PARTIAL_FLAG | WRAP_PARTIAL_RIGHT_FLAG);
    partials = holders = undefined;
  }
  ary = ary === undefined ? ary : nativeMax(toInteger(ary), 0);
  arity = arity === undefined ? arity : toInteger(arity);
  length -= holders ? holders.length : 0;

  if (bitmask & WRAP_PARTIAL_RIGHT_FLAG) {
    var partialsRight = partials,
        holdersRight = holders;

    partials = holders = undefined;
  }
  var data = isBindKey ? undefined : getData(func);

  var newData = [func, bitmask, thisArg, partials, holders, partialsRight, holdersRight, argPos, ary, arity];

  if (data) {
    mergeData(newData, data);
  }
  func = newData[0];
  bitmask = newData[1];
  thisArg = newData[2];
  partials = newData[3];
  holders = newData[4];
  arity = newData[9] = newData[9] === undefined ? isBindKey ? 0 : func.length : nativeMax(newData[9] - length, 0);

  if (!arity && bitmask & (WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG)) {
    bitmask &= ~(WRAP_CURRY_FLAG | WRAP_CURRY_RIGHT_FLAG);
  }
  if (!bitmask || bitmask == WRAP_BIND_FLAG) {
    var result = createBind(func, bitmask, thisArg);
  } else if (bitmask == WRAP_CURRY_FLAG || bitmask == WRAP_CURRY_RIGHT_FLAG) {
    result = createCurry(func, bitmask, arity);
  } else if ((bitmask == WRAP_PARTIAL_FLAG || bitmask == (WRAP_BIND_FLAG | WRAP_PARTIAL_FLAG)) && !holders.length) {
    result = createPartial(func, bitmask, thisArg, partials);
  } else {
    result = createHybrid.apply(undefined, newData);
  }
  var setter = data ? baseSetData : setData;
  return setWrapToString(setter(result, newData), func, bitmask);
}

/** Used to compose bitmasks for function metadata. */
var WRAP_ARY_FLAG = 128;

/**
 * Creates a function that invokes `func`, with up to `n` arguments,
 * ignoring any additional arguments.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Function
 * @param {Function} func The function to cap arguments for.
 * @param {number} [n=func.length] The arity cap.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Function} Returns the new capped function.
 * @example
 *
 * _.map(['6', '8', '10'], _.ary(parseInt, 1));
 * // => [6, 8, 10]
 */
function ary(func, n, guard) {
  n = guard ? undefined : n;
  n = func && n == null ? func.length : n;
  return createWrap(func, WRAP_ARY_FLAG, undefined, undefined, undefined, undefined, n);
}

/**
 * The base implementation of `assignValue` and `assignMergeValue` without
 * value checks.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {string} key The key of the property to assign.
 * @param {*} value The value to assign.
 */
function baseAssignValue(object, key, value) {
  if (key == '__proto__' && defineProperty$1) {
    defineProperty$1(object, key, {
      'configurable': true,
      'enumerable': true,
      'value': value,
      'writable': true
    });
  } else {
    object[key] = value;
  }
}

/**
 * Performs a
 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * comparison between two values to determine if they are equivalent.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 * @example
 *
 * var object = { 'a': 1 };
 * var other = { 'a': 1 };
 *
 * _.eq(object, object);
 * // => true
 *
 * _.eq(object, other);
 * // => false
 *
 * _.eq('a', 'a');
 * // => true
 *
 * _.eq('a', Object('a'));
 * // => false
 *
 * _.eq(NaN, NaN);
 * // => true
 */
function eq(value, other) {
  return value === other || value !== value && other !== other;
}

/** Used for built-in method references. */
var objectProto$6 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$5 = objectProto$6.hasOwnProperty;

/**
 * Assigns `value` to `key` of `object` if the existing value is not equivalent
 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {string} key The key of the property to assign.
 * @param {*} value The value to assign.
 */
function assignValue(object, key, value) {
  var objValue = object[key];
  if (!(hasOwnProperty$5.call(object, key) && eq(objValue, value)) || value === undefined && !(key in object)) {
    baseAssignValue(object, key, value);
  }
}

/**
 * Copies properties of `source` to `object`.
 *
 * @private
 * @param {Object} source The object to copy properties from.
 * @param {Array} props The property identifiers to copy.
 * @param {Object} [object={}] The object to copy properties to.
 * @param {Function} [customizer] The function to customize copied values.
 * @returns {Object} Returns `object`.
 */
function copyObject(source, props, object, customizer) {
  var isNew = !object;
  object || (object = {});

  var index = -1,
      length = props.length;

  while (++index < length) {
    var key = props[index];

    var newValue = customizer ? customizer(object[key], source[key], key, object, source) : undefined;

    if (newValue === undefined) {
      newValue = source[key];
    }
    if (isNew) {
      baseAssignValue(object, key, newValue);
    } else {
      assignValue(object, key, newValue);
    }
  }
  return object;
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$3 = Math.max;

/**
 * A specialized version of `baseRest` which transforms the rest array.
 *
 * @private
 * @param {Function} func The function to apply a rest parameter to.
 * @param {number} [start=func.length-1] The start position of the rest parameter.
 * @param {Function} transform The rest array transform.
 * @returns {Function} Returns the new function.
 */
function overRest(func, start, transform) {
  start = nativeMax$3(start === undefined ? func.length - 1 : start, 0);
  return function () {
    var args = arguments,
        index = -1,
        length = nativeMax$3(args.length - start, 0),
        array = Array(length);

    while (++index < length) {
      array[index] = args[start + index];
    }
    index = -1;
    var otherArgs = Array(start + 1);
    while (++index < start) {
      otherArgs[index] = args[index];
    }
    otherArgs[start] = transform(array);
    return apply(func, this, otherArgs);
  };
}

/**
 * The base implementation of `_.rest` which doesn't validate or coerce arguments.
 *
 * @private
 * @param {Function} func The function to apply a rest parameter to.
 * @param {number} [start=func.length-1] The start position of the rest parameter.
 * @returns {Function} Returns the new function.
 */
function baseRest(func, start) {
  return setToString(overRest(func, start, identity), func + '');
}

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER$1 = 9007199254740991;

/**
 * Checks if `value` is a valid array-like length.
 *
 * **Note:** This method is loosely based on
 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a valid length, else `false`.
 * @example
 *
 * _.isLength(3);
 * // => true
 *
 * _.isLength(Number.MIN_VALUE);
 * // => false
 *
 * _.isLength(Infinity);
 * // => false
 *
 * _.isLength('3');
 * // => false
 */
function isLength(value) {
  return typeof value == 'number' && value > -1 && value % 1 == 0 && value <= MAX_SAFE_INTEGER$1;
}

/**
 * Checks if `value` is array-like. A value is considered array-like if it's
 * not a function and has a `value.length` that's an integer greater than or
 * equal to `0` and less than or equal to `Number.MAX_SAFE_INTEGER`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is array-like, else `false`.
 * @example
 *
 * _.isArrayLike([1, 2, 3]);
 * // => true
 *
 * _.isArrayLike(document.body.children);
 * // => true
 *
 * _.isArrayLike('abc');
 * // => true
 *
 * _.isArrayLike(_.noop);
 * // => false
 */
function isArrayLike(value) {
  return value != null && isLength(value.length) && !isFunction(value);
}

/**
 * Checks if the given arguments are from an iteratee call.
 *
 * @private
 * @param {*} value The potential iteratee value argument.
 * @param {*} index The potential iteratee index or key argument.
 * @param {*} object The potential iteratee object argument.
 * @returns {boolean} Returns `true` if the arguments are from an iteratee call,
 *  else `false`.
 */
function isIterateeCall(value, index, object) {
  if (!isObject(object)) {
    return false;
  }
  var type = typeof index === 'undefined' ? 'undefined' : _typeof(index);
  if (type == 'number' ? isArrayLike(object) && isIndex(index, object.length) : type == 'string' && index in object) {
    return eq(object[index], value);
  }
  return false;
}

/**
 * Creates a function like `_.assign`.
 *
 * @private
 * @param {Function} assigner The function to assign values.
 * @returns {Function} Returns the new assigner function.
 */
function createAssigner(assigner) {
  return baseRest(function (object, sources) {
    var index = -1,
        length = sources.length,
        customizer = length > 1 ? sources[length - 1] : undefined,
        guard = length > 2 ? sources[2] : undefined;

    customizer = assigner.length > 3 && typeof customizer == 'function' ? (length--, customizer) : undefined;

    if (guard && isIterateeCall(sources[0], sources[1], guard)) {
      customizer = length < 3 ? undefined : customizer;
      length = 1;
    }
    object = Object(object);
    while (++index < length) {
      var source = sources[index];
      if (source) {
        assigner(object, source, index, customizer);
      }
    }
    return object;
  });
}

/** Used for built-in method references. */
var objectProto$7 = Object.prototype;

/**
 * Checks if `value` is likely a prototype object.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a prototype, else `false`.
 */
function isPrototype(value) {
  var Ctor = value && value.constructor,
      proto = typeof Ctor == 'function' && Ctor.prototype || objectProto$7;

  return value === proto;
}

/**
 * The base implementation of `_.times` without support for iteratee shorthands
 * or max array length checks.
 *
 * @private
 * @param {number} n The number of times to invoke `iteratee`.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the array of results.
 */
function baseTimes(n, iteratee) {
  var index = -1,
      result = Array(n);

  while (++index < n) {
    result[index] = iteratee(index);
  }
  return result;
}

/** `Object#toString` result references. */
var argsTag = '[object Arguments]';

/**
 * The base implementation of `_.isArguments`.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
 */
function baseIsArguments(value) {
  return isObjectLike(value) && baseGetTag(value) == argsTag;
}

/** Used for built-in method references. */
var objectProto$9 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$7 = objectProto$9.hasOwnProperty;

/** Built-in value references. */
var propertyIsEnumerable = objectProto$9.propertyIsEnumerable;

/**
 * Checks if `value` is likely an `arguments` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an `arguments` object,
 *  else `false`.
 * @example
 *
 * _.isArguments(function() { return arguments; }());
 * // => true
 *
 * _.isArguments([1, 2, 3]);
 * // => false
 */
var isArguments = baseIsArguments(function () {
  return arguments;
}()) ? baseIsArguments : function (value) {
  return isObjectLike(value) && hasOwnProperty$7.call(value, 'callee') && !propertyIsEnumerable.call(value, 'callee');
};

/**
 * This method returns `false`.
 *
 * @static
 * @memberOf _
 * @since 4.13.0
 * @category Util
 * @returns {boolean} Returns `false`.
 * @example
 *
 * _.times(2, _.stubFalse);
 * // => [false, false]
 */
function stubFalse() {
  return false;
}

/** Detect free variable `exports`. */
var freeExports = (typeof exports === 'undefined' ? 'undefined' : _typeof(exports)) == 'object' && exports && !exports.nodeType && exports;

/** Detect free variable `module`. */
var freeModule = freeExports && (typeof module === 'undefined' ? 'undefined' : _typeof(module)) == 'object' && module && !module.nodeType && module;

/** Detect the popular CommonJS extension `module.exports`. */
var moduleExports = freeModule && freeModule.exports === freeExports;

/** Built-in value references. */
var Buffer = moduleExports ? root.Buffer : undefined;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined;

/**
 * Checks if `value` is a buffer.
 *
 * @static
 * @memberOf _
 * @since 4.3.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a buffer, else `false`.
 * @example
 *
 * _.isBuffer(new Buffer(2));
 * // => true
 *
 * _.isBuffer(new Uint8Array(2));
 * // => false
 */
var isBuffer = nativeIsBuffer || stubFalse;

/** `Object#toString` result references. */
var argsTag$1 = '[object Arguments]';
var arrayTag = '[object Array]';
var boolTag = '[object Boolean]';
var dateTag = '[object Date]';
var errorTag = '[object Error]';
var funcTag$1 = '[object Function]';
var mapTag = '[object Map]';
var numberTag = '[object Number]';
var objectTag = '[object Object]';
var regexpTag = '[object RegExp]';
var setTag = '[object Set]';
var stringTag = '[object String]';
var weakMapTag = '[object WeakMap]';

var arrayBufferTag = '[object ArrayBuffer]';
var dataViewTag = '[object DataView]';
var float32Tag = '[object Float32Array]';
var float64Tag = '[object Float64Array]';
var int8Tag = '[object Int8Array]';
var int16Tag = '[object Int16Array]';
var int32Tag = '[object Int32Array]';
var uint8Tag = '[object Uint8Array]';
var uint8ClampedTag = '[object Uint8ClampedArray]';
var uint16Tag = '[object Uint16Array]';
var uint32Tag = '[object Uint32Array]';

/** Used to identify `toStringTag` values of typed arrays. */
var typedArrayTags = {};
typedArrayTags[float32Tag] = typedArrayTags[float64Tag] = typedArrayTags[int8Tag] = typedArrayTags[int16Tag] = typedArrayTags[int32Tag] = typedArrayTags[uint8Tag] = typedArrayTags[uint8ClampedTag] = typedArrayTags[uint16Tag] = typedArrayTags[uint32Tag] = true;
typedArrayTags[argsTag$1] = typedArrayTags[arrayTag] = typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] = typedArrayTags[dataViewTag] = typedArrayTags[dateTag] = typedArrayTags[errorTag] = typedArrayTags[funcTag$1] = typedArrayTags[mapTag] = typedArrayTags[numberTag] = typedArrayTags[objectTag] = typedArrayTags[regexpTag] = typedArrayTags[setTag] = typedArrayTags[stringTag] = typedArrayTags[weakMapTag] = false;

/**
 * The base implementation of `_.isTypedArray` without Node.js optimizations.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
 */
function baseIsTypedArray(value) {
    return isObjectLike(value) && isLength(value.length) && !!typedArrayTags[baseGetTag(value)];
}

/**
 * The base implementation of `_.unary` without support for storing metadata.
 *
 * @private
 * @param {Function} func The function to cap arguments for.
 * @returns {Function} Returns the new capped function.
 */
function baseUnary(func) {
  return function (value) {
    return func(value);
  };
}

/** Detect free variable `exports`. */
var freeExports$1 = (typeof exports === 'undefined' ? 'undefined' : _typeof(exports)) == 'object' && exports && !exports.nodeType && exports;

/** Detect free variable `module`. */
var freeModule$1 = freeExports$1 && (typeof module === 'undefined' ? 'undefined' : _typeof(module)) == 'object' && module && !module.nodeType && module;

/** Detect the popular CommonJS extension `module.exports`. */
var moduleExports$1 = freeModule$1 && freeModule$1.exports === freeExports$1;

/** Detect free variable `process` from Node.js. */
var freeProcess = moduleExports$1 && freeGlobal.process;

/** Used to access faster Node.js helpers. */
var nodeUtil = function () {
  try {
    return freeProcess && freeProcess.binding && freeProcess.binding('util');
  } catch (e) {}
}();

/* Node.js helper references. */
var nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray;

/**
 * Checks if `value` is classified as a typed array.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a typed array, else `false`.
 * @example
 *
 * _.isTypedArray(new Uint8Array);
 * // => true
 *
 * _.isTypedArray([]);
 * // => false
 */
var isTypedArray = nodeIsTypedArray ? baseUnary(nodeIsTypedArray) : baseIsTypedArray;

/** Used for built-in method references. */
var objectProto$8 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$6 = objectProto$8.hasOwnProperty;

/**
 * Creates an array of the enumerable property names of the array-like `value`.
 *
 * @private
 * @param {*} value The value to query.
 * @param {boolean} inherited Specify returning inherited property names.
 * @returns {Array} Returns the array of property names.
 */
function arrayLikeKeys(value, inherited) {
  var isArr = isArray(value),
      isArg = !isArr && isArguments(value),
      isBuff = !isArr && !isArg && isBuffer(value),
      isType = !isArr && !isArg && !isBuff && isTypedArray(value),
      skipIndexes = isArr || isArg || isBuff || isType,
      result = skipIndexes ? baseTimes(value.length, String) : [],
      length = result.length;

  for (var key in value) {
    if ((inherited || hasOwnProperty$6.call(value, key)) && !(skipIndexes && (
    // Safari 9 has enumerable `arguments.length` in strict mode.
    key == 'length' ||
    // Node.js 0.10 has enumerable non-index properties on buffers.
    isBuff && (key == 'offset' || key == 'parent') ||
    // PhantomJS 2 has enumerable non-index properties on typed arrays.
    isType && (key == 'buffer' || key == 'byteLength' || key == 'byteOffset') ||
    // Skip index properties.
    isIndex(key, length)))) {
      result.push(key);
    }
  }
  return result;
}

/**
 * Creates a unary function that invokes `func` with its argument transformed.
 *
 * @private
 * @param {Function} func The function to wrap.
 * @param {Function} transform The argument transform.
 * @returns {Function} Returns the new function.
 */
function overArg(func, transform) {
  return function (arg) {
    return func(transform(arg));
  };
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeKeys = overArg(Object.keys, Object);

/** Used for built-in method references. */
var objectProto$10 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$8 = objectProto$10.hasOwnProperty;

/**
 * The base implementation of `_.keys` which doesn't treat sparse arrays as dense.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 */
function baseKeys(object) {
  if (!isPrototype(object)) {
    return nativeKeys(object);
  }
  var result = [];
  for (var key in Object(object)) {
    if (hasOwnProperty$8.call(object, key) && key != 'constructor') {
      result.push(key);
    }
  }
  return result;
}

/**
 * Creates an array of the own enumerable property names of `object`.
 *
 * **Note:** Non-object values are coerced to objects. See the
 * [ES spec](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
 * for more details.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.keys(new Foo);
 * // => ['a', 'b'] (iteration order is not guaranteed)
 *
 * _.keys('hi');
 * // => ['0', '1']
 */
function keys(object) {
  return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object);
}

/** Used for built-in method references. */
var objectProto$5 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$4 = objectProto$5.hasOwnProperty;

/**
 * Assigns own enumerable string keyed properties of source objects to the
 * destination object. Source objects are applied from left to right.
 * Subsequent sources overwrite property assignments of previous sources.
 *
 * **Note:** This method mutates `object` and is loosely based on
 * [`Object.assign`](https://mdn.io/Object/assign).
 *
 * @static
 * @memberOf _
 * @since 0.10.0
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @returns {Object} Returns `object`.
 * @see _.assignIn
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 * }
 *
 * function Bar() {
 *   this.c = 3;
 * }
 *
 * Foo.prototype.b = 2;
 * Bar.prototype.d = 4;
 *
 * _.assign({ 'a': 0 }, new Foo, new Bar);
 * // => { 'a': 1, 'c': 3 }
 */
var assign = createAssigner(function (object, source) {
  if (isPrototype(source) || isArrayLike(source)) {
    copyObject(source, keys(source), object);
    return;
  }
  for (var key in source) {
    if (hasOwnProperty$4.call(source, key)) {
      assignValue(object, key, source[key]);
    }
  }
});

/**
 * This function is like
 * [`Object.keys`](http://ecma-international.org/ecma-262/7.0/#sec-object.keys)
 * except that it includes inherited enumerable properties.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 */
function nativeKeysIn(object) {
  var result = [];
  if (object != null) {
    for (var key in Object(object)) {
      result.push(key);
    }
  }
  return result;
}

/** Used for built-in method references. */
var objectProto$11 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$9 = objectProto$11.hasOwnProperty;

/**
 * The base implementation of `_.keysIn` which doesn't treat sparse arrays as dense.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 */
function baseKeysIn(object) {
  if (!isObject(object)) {
    return nativeKeysIn(object);
  }
  var isProto = isPrototype(object),
      result = [];

  for (var key in object) {
    if (!(key == 'constructor' && (isProto || !hasOwnProperty$9.call(object, key)))) {
      result.push(key);
    }
  }
  return result;
}

/**
 * Creates an array of the own and inherited enumerable property names of `object`.
 *
 * **Note:** Non-object values are coerced to objects.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.keysIn(new Foo);
 * // => ['a', 'b', 'c'] (iteration order is not guaranteed)
 */
function keysIn$1(object) {
  return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object);
}

/**
 * This method is like `_.assign` except that it iterates over own and
 * inherited source properties.
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @alias extend
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @returns {Object} Returns `object`.
 * @see _.assign
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 * }
 *
 * function Bar() {
 *   this.c = 3;
 * }
 *
 * Foo.prototype.b = 2;
 * Bar.prototype.d = 4;
 *
 * _.assignIn({ 'a': 0 }, new Foo, new Bar);
 * // => { 'a': 1, 'b': 2, 'c': 3, 'd': 4 }
 */
var assignIn = createAssigner(function (object, source) {
  copyObject(source, keysIn$1(source), object);
});

/**
 * This method is like `_.assignIn` except that it accepts `customizer`
 * which is invoked to produce the assigned values. If `customizer` returns
 * `undefined`, assignment is handled by the method instead. The `customizer`
 * is invoked with five arguments: (objValue, srcValue, key, object, source).
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @alias extendWith
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} sources The source objects.
 * @param {Function} [customizer] The function to customize assigned values.
 * @returns {Object} Returns `object`.
 * @see _.assignWith
 * @example
 *
 * function customizer(objValue, srcValue) {
 *   return _.isUndefined(objValue) ? srcValue : objValue;
 * }
 *
 * var defaults = _.partialRight(_.assignInWith, customizer);
 *
 * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
 * // => { 'a': 1, 'b': 2 }
 */
var assignInWith = createAssigner(function (object, source, srcIndex, customizer) {
  copyObject(source, keysIn$1(source), object, customizer);
});

/**
 * This method is like `_.assign` except that it accepts `customizer`
 * which is invoked to produce the assigned values. If `customizer` returns
 * `undefined`, assignment is handled by the method instead. The `customizer`
 * is invoked with five arguments: (objValue, srcValue, key, object, source).
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} sources The source objects.
 * @param {Function} [customizer] The function to customize assigned values.
 * @returns {Object} Returns `object`.
 * @see _.assignInWith
 * @example
 *
 * function customizer(objValue, srcValue) {
 *   return _.isUndefined(objValue) ? srcValue : objValue;
 * }
 *
 * var defaults = _.partialRight(_.assignWith, customizer);
 *
 * defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
 * // => { 'a': 1, 'b': 2 }
 */
var assignWith = createAssigner(function (object, source, srcIndex, customizer) {
  copyObject(source, keys(source), object, customizer);
});

/** Used to match property names within property paths. */
var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/;
var reIsPlainProp = /^\w*$/;

/**
 * Checks if `value` is a property name and not a property path.
 *
 * @private
 * @param {*} value The value to check.
 * @param {Object} [object] The object to query keys on.
 * @returns {boolean} Returns `true` if `value` is a property name, else `false`.
 */
function isKey(value, object) {
  if (isArray(value)) {
    return false;
  }
  var type = typeof value === 'undefined' ? 'undefined' : _typeof(value);
  if (type == 'number' || type == 'symbol' || type == 'boolean' || value == null || isSymbol(value)) {
    return true;
  }
  return reIsPlainProp.test(value) || !reIsDeepProp.test(value) || object != null && value in Object(object);
}

/* Built-in method references that are verified to be native. */
var nativeCreate = getNative(Object, 'create');

/**
 * Removes all key-value entries from the hash.
 *
 * @private
 * @name clear
 * @memberOf Hash
 */
function hashClear() {
  this.__data__ = nativeCreate ? nativeCreate(null) : {};
  this.size = 0;
}

/**
 * Removes `key` and its value from the hash.
 *
 * @private
 * @name delete
 * @memberOf Hash
 * @param {Object} hash The hash to modify.
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function hashDelete(key) {
  var result = this.has(key) && delete this.__data__[key];
  this.size -= result ? 1 : 0;
  return result;
}

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED = '__lodash_hash_undefined__';

/** Used for built-in method references. */
var objectProto$12 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$10 = objectProto$12.hasOwnProperty;

/**
 * Gets the hash value for `key`.
 *
 * @private
 * @name get
 * @memberOf Hash
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function hashGet(key) {
  var data = this.__data__;
  if (nativeCreate) {
    var result = data[key];
    return result === HASH_UNDEFINED ? undefined : result;
  }
  return hasOwnProperty$10.call(data, key) ? data[key] : undefined;
}

/** Used for built-in method references. */
var objectProto$13 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$11 = objectProto$13.hasOwnProperty;

/**
 * Checks if a hash value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf Hash
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function hashHas(key) {
  var data = this.__data__;
  return nativeCreate ? data[key] !== undefined : hasOwnProperty$11.call(data, key);
}

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED$1 = '__lodash_hash_undefined__';

/**
 * Sets the hash `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf Hash
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the hash instance.
 */
function hashSet(key, value) {
  var data = this.__data__;
  this.size += this.has(key) ? 0 : 1;
  data[key] = nativeCreate && value === undefined ? HASH_UNDEFINED$1 : value;
  return this;
}

/**
 * Creates a hash object.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function Hash(entries) {
  var index = -1,
      length = entries == null ? 0 : entries.length;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

// Add methods to `Hash`.
Hash.prototype.clear = hashClear;
Hash.prototype['delete'] = hashDelete;
Hash.prototype.get = hashGet;
Hash.prototype.has = hashHas;
Hash.prototype.set = hashSet;

/**
 * Removes all key-value entries from the list cache.
 *
 * @private
 * @name clear
 * @memberOf ListCache
 */
function listCacheClear() {
  this.__data__ = [];
  this.size = 0;
}

/**
 * Gets the index at which the `key` is found in `array` of key-value pairs.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} key The key to search for.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function assocIndexOf(array, key) {
  var length = array.length;
  while (length--) {
    if (eq(array[length][0], key)) {
      return length;
    }
  }
  return -1;
}

/** Used for built-in method references. */
var arrayProto = Array.prototype;

/** Built-in value references. */
var splice = arrayProto.splice;

/**
 * Removes `key` and its value from the list cache.
 *
 * @private
 * @name delete
 * @memberOf ListCache
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function listCacheDelete(key) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  if (index < 0) {
    return false;
  }
  var lastIndex = data.length - 1;
  if (index == lastIndex) {
    data.pop();
  } else {
    splice.call(data, index, 1);
  }
  --this.size;
  return true;
}

/**
 * Gets the list cache value for `key`.
 *
 * @private
 * @name get
 * @memberOf ListCache
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function listCacheGet(key) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  return index < 0 ? undefined : data[index][1];
}

/**
 * Checks if a list cache value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf ListCache
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function listCacheHas(key) {
  return assocIndexOf(this.__data__, key) > -1;
}

/**
 * Sets the list cache `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf ListCache
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the list cache instance.
 */
function listCacheSet(key, value) {
  var data = this.__data__,
      index = assocIndexOf(data, key);

  if (index < 0) {
    ++this.size;
    data.push([key, value]);
  } else {
    data[index][1] = value;
  }
  return this;
}

/**
 * Creates an list cache object.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function ListCache(entries) {
  var index = -1,
      length = entries == null ? 0 : entries.length;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

// Add methods to `ListCache`.
ListCache.prototype.clear = listCacheClear;
ListCache.prototype['delete'] = listCacheDelete;
ListCache.prototype.get = listCacheGet;
ListCache.prototype.has = listCacheHas;
ListCache.prototype.set = listCacheSet;

/* Built-in method references that are verified to be native. */
var Map = getNative(root, 'Map');

/**
 * Removes all key-value entries from the map.
 *
 * @private
 * @name clear
 * @memberOf MapCache
 */
function mapCacheClear() {
  this.size = 0;
  this.__data__ = {
    'hash': new Hash(),
    'map': new (Map || ListCache)(),
    'string': new Hash()
  };
}

/**
 * Checks if `value` is suitable for use as unique object key.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is suitable, else `false`.
 */
function isKeyable(value) {
  var type = typeof value === 'undefined' ? 'undefined' : _typeof(value);
  return type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean' ? value !== '__proto__' : value === null;
}

/**
 * Gets the data for `map`.
 *
 * @private
 * @param {Object} map The map to query.
 * @param {string} key The reference key.
 * @returns {*} Returns the map data.
 */
function getMapData(map, key) {
  var data = map.__data__;
  return isKeyable(key) ? data[typeof key == 'string' ? 'string' : 'hash'] : data.map;
}

/**
 * Removes `key` and its value from the map.
 *
 * @private
 * @name delete
 * @memberOf MapCache
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function mapCacheDelete(key) {
  var result = getMapData(this, key)['delete'](key);
  this.size -= result ? 1 : 0;
  return result;
}

/**
 * Gets the map value for `key`.
 *
 * @private
 * @name get
 * @memberOf MapCache
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function mapCacheGet(key) {
  return getMapData(this, key).get(key);
}

/**
 * Checks if a map value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf MapCache
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function mapCacheHas(key) {
  return getMapData(this, key).has(key);
}

/**
 * Sets the map `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf MapCache
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the map cache instance.
 */
function mapCacheSet(key, value) {
  var data = getMapData(this, key),
      size = data.size;

  data.set(key, value);
  this.size += data.size == size ? 0 : 1;
  return this;
}

/**
 * Creates a map cache object to store key-value pairs.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function MapCache(entries) {
  var index = -1,
      length = entries == null ? 0 : entries.length;

  this.clear();
  while (++index < length) {
    var entry = entries[index];
    this.set(entry[0], entry[1]);
  }
}

// Add methods to `MapCache`.
MapCache.prototype.clear = mapCacheClear;
MapCache.prototype['delete'] = mapCacheDelete;
MapCache.prototype.get = mapCacheGet;
MapCache.prototype.has = mapCacheHas;
MapCache.prototype.set = mapCacheSet;

/** Error message constants. */
var FUNC_ERROR_TEXT$2 = 'Expected a function';

/**
 * Creates a function that memoizes the result of `func`. If `resolver` is
 * provided, it determines the cache key for storing the result based on the
 * arguments provided to the memoized function. By default, the first argument
 * provided to the memoized function is used as the map cache key. The `func`
 * is invoked with the `this` binding of the memoized function.
 *
 * **Note:** The cache is exposed as the `cache` property on the memoized
 * function. Its creation may be customized by replacing the `_.memoize.Cache`
 * constructor with one whose instances implement the
 * [`Map`](http://ecma-international.org/ecma-262/7.0/#sec-properties-of-the-map-prototype-object)
 * method interface of `clear`, `delete`, `get`, `has`, and `set`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to have its output memoized.
 * @param {Function} [resolver] The function to resolve the cache key.
 * @returns {Function} Returns the new memoized function.
 * @example
 *
 * var object = { 'a': 1, 'b': 2 };
 * var other = { 'c': 3, 'd': 4 };
 *
 * var values = _.memoize(_.values);
 * values(object);
 * // => [1, 2]
 *
 * values(other);
 * // => [3, 4]
 *
 * object.a = 2;
 * values(object);
 * // => [1, 2]
 *
 * // Modify the result cache.
 * values.cache.set(object, ['a', 'b']);
 * values(object);
 * // => ['a', 'b']
 *
 * // Replace `_.memoize.Cache`.
 * _.memoize.Cache = WeakMap;
 */
function memoize(func, resolver) {
  if (typeof func != 'function' || resolver != null && typeof resolver != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT$2);
  }
  var memoized = function memoized() {
    var args = arguments,
        key = resolver ? resolver.apply(this, args) : args[0],
        cache = memoized.cache;

    if (cache.has(key)) {
      return cache.get(key);
    }
    var result = func.apply(this, args);
    memoized.cache = cache.set(key, result) || cache;
    return result;
  };
  memoized.cache = new (memoize.Cache || MapCache)();
  return memoized;
}

// Expose `MapCache`.
memoize.Cache = MapCache;

/** Used as the maximum memoize cache size. */
var MAX_MEMOIZE_SIZE = 500;

/**
 * A specialized version of `_.memoize` which clears the memoized function's
 * cache when it exceeds `MAX_MEMOIZE_SIZE`.
 *
 * @private
 * @param {Function} func The function to have its output memoized.
 * @returns {Function} Returns the new memoized function.
 */
function memoizeCapped(func) {
  var result = memoize(func, function (key) {
    if (cache.size === MAX_MEMOIZE_SIZE) {
      cache.clear();
    }
    return key;
  });

  var cache = result.cache;
  return result;
}

/** Used to match property names within property paths. */
var reLeadingDot = /^\./;
var rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]|(?=(?:\.|\[\])(?:\.|\[\]|$))/g;

/** Used to match backslashes in property paths. */
var reEscapeChar = /\\(\\)?/g;

/**
 * Converts `string` to a property path array.
 *
 * @private
 * @param {string} string The string to convert.
 * @returns {Array} Returns the property path array.
 */
var stringToPath = memoizeCapped(function (string) {
  var result = [];
  if (reLeadingDot.test(string)) {
    result.push('');
  }
  string.replace(rePropName, function (match, number, quote, string) {
    result.push(quote ? string.replace(reEscapeChar, '$1') : number || match);
  });
  return result;
});

/**
 * Converts `value` to a string. An empty string is returned for `null`
 * and `undefined` values. The sign of `-0` is preserved.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {string} Returns the converted string.
 * @example
 *
 * _.toString(null);
 * // => ''
 *
 * _.toString(-0);
 * // => '-0'
 *
 * _.toString([1, 2, 3]);
 * // => '1,2,3'
 */
function toString(value) {
  return value == null ? '' : baseToString(value);
}

/**
 * Casts `value` to a path array if it's not one.
 *
 * @private
 * @param {*} value The value to inspect.
 * @param {Object} [object] The object to query keys on.
 * @returns {Array} Returns the cast property path array.
 */
function castPath(value, object) {
  if (isArray(value)) {
    return value;
  }
  return isKey(value, object) ? [value] : stringToPath(toString(value));
}

/** Used as references for various `Number` constants. */
var INFINITY$2 = 1 / 0;

/**
 * Converts `value` to a string key if it's not a string or symbol.
 *
 * @private
 * @param {*} value The value to inspect.
 * @returns {string|symbol} Returns the key.
 */
function toKey(value) {
  if (typeof value == 'string' || isSymbol(value)) {
    return value;
  }
  var result = value + '';
  return result == '0' && 1 / value == -INFINITY$2 ? '-0' : result;
}

/**
 * The base implementation of `_.get` without support for default values.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array|string} path The path of the property to get.
 * @returns {*} Returns the resolved value.
 */
function baseGet(object, path) {
  path = castPath(path, object);

  var index = 0,
      length = path.length;

  while (object != null && index < length) {
    object = object[toKey(path[index++])];
  }
  return index && index == length ? object : undefined;
}

/**
 * Gets the value at `path` of `object`. If the resolved value is
 * `undefined`, the `defaultValue` is returned in its place.
 *
 * @static
 * @memberOf _
 * @since 3.7.0
 * @category Object
 * @param {Object} object The object to query.
 * @param {Array|string} path The path of the property to get.
 * @param {*} [defaultValue] The value returned for `undefined` resolved values.
 * @returns {*} Returns the resolved value.
 * @example
 *
 * var object = { 'a': [{ 'b': { 'c': 3 } }] };
 *
 * _.get(object, 'a[0].b.c');
 * // => 3
 *
 * _.get(object, ['a', '0', 'b', 'c']);
 * // => 3
 *
 * _.get(object, 'a.b.c', 'default');
 * // => 'default'
 */
function get$1(object, path, defaultValue) {
  var result = object == null ? undefined : baseGet(object, path);
  return result === undefined ? defaultValue : result;
}

/**
 * The base implementation of `_.at` without support for individual paths.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {string[]} paths The property paths to pick.
 * @returns {Array} Returns the picked elements.
 */
function baseAt(object, paths) {
  var index = -1,
      length = paths.length,
      result = Array(length),
      skip = object == null;

  while (++index < length) {
    result[index] = skip ? undefined : get$1(object, paths[index]);
  }
  return result;
}

/**
 * Appends the elements of `values` to `array`.
 *
 * @private
 * @param {Array} array The array to modify.
 * @param {Array} values The values to append.
 * @returns {Array} Returns `array`.
 */
function arrayPush(array, values) {
  var index = -1,
      length = values.length,
      offset = array.length;

  while (++index < length) {
    array[offset + index] = values[index];
  }
  return array;
}

/** Built-in value references. */
var spreadableSymbol = _Symbol ? _Symbol.isConcatSpreadable : undefined;

/**
 * Checks if `value` is a flattenable `arguments` object or array.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is flattenable, else `false`.
 */
function isFlattenable(value) {
  return isArray(value) || isArguments(value) || !!(spreadableSymbol && value && value[spreadableSymbol]);
}

/**
 * The base implementation of `_.flatten` with support for restricting flattening.
 *
 * @private
 * @param {Array} array The array to flatten.
 * @param {number} depth The maximum recursion depth.
 * @param {boolean} [predicate=isFlattenable] The function invoked per iteration.
 * @param {boolean} [isStrict] Restrict to values that pass `predicate` checks.
 * @param {Array} [result=[]] The initial result value.
 * @returns {Array} Returns the new flattened array.
 */
function baseFlatten(array, depth, predicate, isStrict, result) {
  var index = -1,
      length = array.length;

  predicate || (predicate = isFlattenable);
  result || (result = []);

  while (++index < length) {
    var value = array[index];
    if (depth > 0 && predicate(value)) {
      if (depth > 1) {
        // Recursively flatten arrays (susceptible to call stack limits).
        baseFlatten(value, depth - 1, predicate, isStrict, result);
      } else {
        arrayPush(result, value);
      }
    } else if (!isStrict) {
      result[result.length] = value;
    }
  }
  return result;
}

/**
 * Flattens `array` a single level deep.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The array to flatten.
 * @returns {Array} Returns the new flattened array.
 * @example
 *
 * _.flatten([1, [2, [3, [4]], 5]]);
 * // => [1, 2, [3, [4]], 5]
 */
function flatten(array) {
  var length = array == null ? 0 : array.length;
  return length ? baseFlatten(array, 1) : [];
}

/**
 * A specialized version of `baseRest` which flattens the rest array.
 *
 * @private
 * @param {Function} func The function to apply a rest parameter to.
 * @returns {Function} Returns the new function.
 */
function flatRest(func) {
  return setToString(overRest(func, undefined, flatten), func + '');
}

/**
 * Creates an array of values corresponding to `paths` of `object`.
 *
 * @static
 * @memberOf _
 * @since 1.0.0
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {...(string|string[])} [paths] The property paths to pick.
 * @returns {Array} Returns the picked values.
 * @example
 *
 * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
 *
 * _.at(object, ['a[0].b.c', 'a[1]']);
 * // => [3, 4]
 */
var at = flatRest(baseAt);

/** Built-in value references. */
var getPrototype = overArg(Object.getPrototypeOf, Object);

/** `Object#toString` result references. */
var objectTag$1 = '[object Object]';

/** Used for built-in method references. */
var funcProto$2 = Function.prototype;
var objectProto$14 = Object.prototype;

/** Used to resolve the decompiled source of functions. */
var funcToString$2 = funcProto$2.toString;

/** Used to check objects for own properties. */
var hasOwnProperty$12 = objectProto$14.hasOwnProperty;

/** Used to infer the `Object` constructor. */
var objectCtorString = funcToString$2.call(Object);

/**
 * Checks if `value` is a plain object, that is, an object created by the
 * `Object` constructor or one with a `[[Prototype]]` of `null`.
 *
 * @static
 * @memberOf _
 * @since 0.8.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a plain object, else `false`.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 * }
 *
 * _.isPlainObject(new Foo);
 * // => false
 *
 * _.isPlainObject([1, 2, 3]);
 * // => false
 *
 * _.isPlainObject({ 'x': 0, 'y': 0 });
 * // => true
 *
 * _.isPlainObject(Object.create(null));
 * // => true
 */
function isPlainObject(value) {
  if (!isObjectLike(value) || baseGetTag(value) != objectTag$1) {
    return false;
  }
  var proto = getPrototype(value);
  if (proto === null) {
    return true;
  }
  var Ctor = hasOwnProperty$12.call(proto, 'constructor') && proto.constructor;
  return typeof Ctor == 'function' && Ctor instanceof Ctor && funcToString$2.call(Ctor) == objectCtorString;
}

/** `Object#toString` result references. */
var domExcTag = '[object DOMException]';
var errorTag$1 = '[object Error]';

/**
 * Checks if `value` is an `Error`, `EvalError`, `RangeError`, `ReferenceError`,
 * `SyntaxError`, `TypeError`, or `URIError` object.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an error object, else `false`.
 * @example
 *
 * _.isError(new Error);
 * // => true
 *
 * _.isError(Error);
 * // => false
 */
function isError(value) {
  if (!isObjectLike(value)) {
    return false;
  }
  var tag = baseGetTag(value);
  return tag == errorTag$1 || tag == domExcTag || typeof value.message == 'string' && typeof value.name == 'string' && !isPlainObject(value);
}

/**
 * Attempts to invoke `func`, returning either the result or the caught error
 * object. Any additional arguments are provided to `func` when it's invoked.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Util
 * @param {Function} func The function to attempt.
 * @param {...*} [args] The arguments to invoke `func` with.
 * @returns {*} Returns the `func` result or error object.
 * @example
 *
 * // Avoid throwing errors for invalid selectors.
 * var elements = _.attempt(function(selector) {
 *   return document.querySelectorAll(selector);
 * }, '>_>');
 *
 * if (_.isError(elements)) {
 *   elements = [];
 * }
 */
var attempt = baseRest(function (func, args) {
  try {
    return apply(func, undefined, args);
  } catch (e) {
    return isError(e) ? e : new Error(e);
  }
});

/** Error message constants. */
var FUNC_ERROR_TEXT$3 = 'Expected a function';

/**
 * Creates a function that invokes `func`, with the `this` binding and arguments
 * of the created function, while it's called less than `n` times. Subsequent
 * calls to the created function return the result of the last `func` invocation.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Function
 * @param {number} n The number of calls at which `func` is no longer invoked.
 * @param {Function} func The function to restrict.
 * @returns {Function} Returns the new restricted function.
 * @example
 *
 * jQuery(element).on('click', _.before(5, addContactToList));
 * // => Allows adding up to 4 contacts to the list.
 */
function before(n, func) {
  var result;
  if (typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT$3);
  }
  n = toInteger(n);
  return function () {
    if (--n > 0) {
      result = func.apply(this, arguments);
    }
    if (n <= 1) {
      func = undefined;
    }
    return result;
  };
}

/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_FLAG$7 = 1;
var WRAP_PARTIAL_FLAG$3 = 32;

/**
 * Creates a function that invokes `func` with the `this` binding of `thisArg`
 * and `partials` prepended to the arguments it receives.
 *
 * The `_.bind.placeholder` value, which defaults to `_` in monolithic builds,
 * may be used as a placeholder for partially applied arguments.
 *
 * **Note:** Unlike native `Function#bind`, this method doesn't set the "length"
 * property of bound functions.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to bind.
 * @param {*} thisArg The `this` binding of `func`.
 * @param {...*} [partials] The arguments to be partially applied.
 * @returns {Function} Returns the new bound function.
 * @example
 *
 * function greet(greeting, punctuation) {
 *   return greeting + ' ' + this.user + punctuation;
 * }
 *
 * var object = { 'user': 'fred' };
 *
 * var bound = _.bind(greet, object, 'hi');
 * bound('!');
 * // => 'hi fred!'
 *
 * // Bound with placeholders.
 * var bound = _.bind(greet, object, _, '!');
 * bound('hi');
 * // => 'hi fred!'
 */
var bind = baseRest(function (func, thisArg, partials) {
  var bitmask = WRAP_BIND_FLAG$7;
  if (partials.length) {
    var holders = replaceHolders(partials, getHolder(bind));
    bitmask |= WRAP_PARTIAL_FLAG$3;
  }
  return createWrap(func, bitmask, thisArg, partials, holders);
});

// Assign default placeholders.
bind.placeholder = {};

/**
 * Binds methods of an object to the object itself, overwriting the existing
 * method.
 *
 * **Note:** This method doesn't set the "length" property of bound functions.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Util
 * @param {Object} object The object to bind and assign the bound methods to.
 * @param {...(string|string[])} methodNames The object method names to bind.
 * @returns {Object} Returns `object`.
 * @example
 *
 * var view = {
 *   'label': 'docs',
 *   'click': function() {
 *     console.log('clicked ' + this.label);
 *   }
 * };
 *
 * _.bindAll(view, ['click']);
 * jQuery(element).on('click', view.click);
 * // => Logs 'clicked docs' when clicked.
 */
var bindAll = flatRest(function (object, methodNames) {
  arrayEach(methodNames, function (key) {
    key = toKey(key);
    baseAssignValue(object, key, bind(object[key], object));
  });
  return object;
});

/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_FLAG$8 = 1;
var WRAP_BIND_KEY_FLAG$5 = 2;
var WRAP_PARTIAL_FLAG$4 = 32;

/**
 * Creates a function that invokes the method at `object[key]` with `partials`
 * prepended to the arguments it receives.
 *
 * This method differs from `_.bind` by allowing bound functions to reference
 * methods that may be redefined or don't yet exist. See
 * [Peter Michaux's article](http://peter.michaux.ca/articles/lazy-function-definition-pattern)
 * for more details.
 *
 * The `_.bindKey.placeholder` value, which defaults to `_` in monolithic
 * builds, may be used as a placeholder for partially applied arguments.
 *
 * @static
 * @memberOf _
 * @since 0.10.0
 * @category Function
 * @param {Object} object The object to invoke the method on.
 * @param {string} key The key of the method.
 * @param {...*} [partials] The arguments to be partially applied.
 * @returns {Function} Returns the new bound function.
 * @example
 *
 * var object = {
 *   'user': 'fred',
 *   'greet': function(greeting, punctuation) {
 *     return greeting + ' ' + this.user + punctuation;
 *   }
 * };
 *
 * var bound = _.bindKey(object, 'greet', 'hi');
 * bound('!');
 * // => 'hi fred!'
 *
 * object.greet = function(greeting, punctuation) {
 *   return greeting + 'ya ' + this.user + punctuation;
 * };
 *
 * bound('!');
 * // => 'hiya fred!'
 *
 * // Bound with placeholders.
 * var bound = _.bindKey(object, 'greet', _, '!');
 * bound('hi');
 * // => 'hiya fred!'
 */
var bindKey = baseRest(function (object, key, partials) {
  var bitmask = WRAP_BIND_FLAG$8 | WRAP_BIND_KEY_FLAG$5;
  if (partials.length) {
    var holders = replaceHolders(partials, getHolder(bindKey));
    bitmask |= WRAP_PARTIAL_FLAG$4;
  }
  return createWrap(key, bitmask, object, partials, holders);
});

// Assign default placeholders.
bindKey.placeholder = {};

/**
 * The base implementation of `_.slice` without an iteratee call guard.
 *
 * @private
 * @param {Array} array The array to slice.
 * @param {number} [start=0] The start position.
 * @param {number} [end=array.length] The end position.
 * @returns {Array} Returns the slice of `array`.
 */
function baseSlice(array, start, end) {
  var index = -1,
      length = array.length;

  if (start < 0) {
    start = -start > length ? 0 : length + start;
  }
  end = end > length ? length : end;
  if (end < 0) {
    end += length;
  }
  length = start > end ? 0 : end - start >>> 0;
  start >>>= 0;

  var result = Array(length);
  while (++index < length) {
    result[index] = array[index + start];
  }
  return result;
}

/**
 * Casts `array` to a slice if it's needed.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {number} start The start position.
 * @param {number} [end=array.length] The end position.
 * @returns {Array} Returns the cast slice.
 */
function castSlice(array, start, end) {
  var length = array.length;
  end = end === undefined ? length : end;
  return !start && end >= length ? array : baseSlice(array, start, end);
}

/** Used to compose unicode character classes. */
var rsAstralRange = '\\ud800-\\udfff';
var rsComboMarksRange = '\\u0300-\\u036f';
var reComboHalfMarksRange = '\\ufe20-\\ufe2f';
var rsComboSymbolsRange = '\\u20d0-\\u20ff';
var rsComboRange = rsComboMarksRange + reComboHalfMarksRange + rsComboSymbolsRange;
var rsVarRange = '\\ufe0e\\ufe0f';

/** Used to compose unicode capture groups. */
var rsZWJ = '\\u200d';

/** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange + rsComboRange + rsVarRange + ']');

/**
 * Checks if `string` contains Unicode symbols.
 *
 * @private
 * @param {string} string The string to inspect.
 * @returns {boolean} Returns `true` if a symbol is found, else `false`.
 */
function hasUnicode(string) {
  return reHasUnicode.test(string);
}

/**
 * Converts an ASCII `string` to an array.
 *
 * @private
 * @param {string} string The string to convert.
 * @returns {Array} Returns the converted array.
 */
function asciiToArray(string) {
  return string.split('');
}

/** Used to compose unicode character classes. */
var rsAstralRange$1 = '\\ud800-\\udfff';
var rsComboMarksRange$1 = '\\u0300-\\u036f';
var reComboHalfMarksRange$1 = '\\ufe20-\\ufe2f';
var rsComboSymbolsRange$1 = '\\u20d0-\\u20ff';
var rsComboRange$1 = rsComboMarksRange$1 + reComboHalfMarksRange$1 + rsComboSymbolsRange$1;
var rsVarRange$1 = '\\ufe0e\\ufe0f';

/** Used to compose unicode capture groups. */
var rsAstral = '[' + rsAstralRange$1 + ']';
var rsCombo = '[' + rsComboRange$1 + ']';
var rsFitz = '\\ud83c[\\udffb-\\udfff]';
var rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')';
var rsNonAstral = '[^' + rsAstralRange$1 + ']';
var rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}';
var rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]';
var rsZWJ$1 = '\\u200d';

/** Used to compose unicode regexes. */
var reOptMod = rsModifier + '?';
var rsOptVar = '[' + rsVarRange$1 + ']?';
var rsOptJoin = '(?:' + rsZWJ$1 + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*';
var rsSeq = rsOptVar + reOptMod + rsOptJoin;
var rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';

/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');

/**
 * Converts a Unicode `string` to an array.
 *
 * @private
 * @param {string} string The string to convert.
 * @returns {Array} Returns the converted array.
 */
function unicodeToArray(string) {
    return string.match(reUnicode) || [];
}

/**
 * Converts `string` to an array.
 *
 * @private
 * @param {string} string The string to convert.
 * @returns {Array} Returns the converted array.
 */
function stringToArray(string) {
  return hasUnicode(string) ? unicodeToArray(string) : asciiToArray(string);
}

/**
 * Creates a function like `_.lowerFirst`.
 *
 * @private
 * @param {string} methodName The name of the `String` case method to use.
 * @returns {Function} Returns the new case function.
 */
function createCaseFirst(methodName) {
  return function (string) {
    string = toString(string);

    var strSymbols = hasUnicode(string) ? stringToArray(string) : undefined;

    var chr = strSymbols ? strSymbols[0] : string.charAt(0);

    var trailing = strSymbols ? castSlice(strSymbols, 1).join('') : string.slice(1);

    return chr[methodName]() + trailing;
  };
}

/**
 * Converts the first character of `string` to upper case.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to convert.
 * @returns {string} Returns the converted string.
 * @example
 *
 * _.upperFirst('fred');
 * // => 'Fred'
 *
 * _.upperFirst('FRED');
 * // => 'FRED'
 */
var upperFirst = createCaseFirst('toUpperCase');

/**
 * Converts the first character of `string` to upper case and the remaining
 * to lower case.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to capitalize.
 * @returns {string} Returns the capitalized string.
 * @example
 *
 * _.capitalize('FRED');
 * // => 'Fred'
 */
function capitalize(string) {
  return upperFirst(toString(string).toLowerCase());
}

/**
 * A specialized version of `_.reduce` for arrays without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {*} [accumulator] The initial value.
 * @param {boolean} [initAccum] Specify using the first element of `array` as
 *  the initial value.
 * @returns {*} Returns the accumulated value.
 */
function arrayReduce(array, iteratee, accumulator, initAccum) {
  var index = -1,
      length = array == null ? 0 : array.length;

  if (initAccum && length) {
    accumulator = array[++index];
  }
  while (++index < length) {
    accumulator = iteratee(accumulator, array[index], index, array);
  }
  return accumulator;
}

/**
 * The base implementation of `_.propertyOf` without support for deep paths.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Function} Returns the new accessor function.
 */
function basePropertyOf(object) {
  return function (key) {
    return object == null ? undefined : object[key];
  };
}

/** Used to map Latin Unicode letters to basic Latin letters. */
var deburredLetters = {
  // Latin-1 Supplement block.
  '\xc0': 'A', '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
  '\xe0': 'a', '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
  '\xc7': 'C', '\xe7': 'c',
  '\xd0': 'D', '\xf0': 'd',
  '\xc8': 'E', '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
  '\xe8': 'e', '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
  '\xcc': 'I', '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
  '\xec': 'i', '\xed': 'i', '\xee': 'i', '\xef': 'i',
  '\xd1': 'N', '\xf1': 'n',
  '\xd2': 'O', '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
  '\xf2': 'o', '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
  '\xd9': 'U', '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
  '\xf9': 'u', '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
  '\xdd': 'Y', '\xfd': 'y', '\xff': 'y',
  '\xc6': 'Ae', '\xe6': 'ae',
  '\xde': 'Th', '\xfe': 'th',
  '\xdf': 'ss',
  // Latin Extended-A block.
  '\u0100': 'A', '\u0102': 'A', '\u0104': 'A',
  '\u0101': 'a', '\u0103': 'a', '\u0105': 'a',
  '\u0106': 'C', '\u0108': 'C', '\u010A': 'C', '\u010C': 'C',
  '\u0107': 'c', '\u0109': 'c', '\u010B': 'c', '\u010D': 'c',
  '\u010E': 'D', '\u0110': 'D', '\u010F': 'd', '\u0111': 'd',
  '\u0112': 'E', '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011A': 'E',
  '\u0113': 'e', '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011B': 'e',
  '\u011C': 'G', '\u011E': 'G', '\u0120': 'G', '\u0122': 'G',
  '\u011D': 'g', '\u011F': 'g', '\u0121': 'g', '\u0123': 'g',
  '\u0124': 'H', '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
  '\u0128': 'I', '\u012A': 'I', '\u012C': 'I', '\u012E': 'I', '\u0130': 'I',
  '\u0129': 'i', '\u012B': 'i', '\u012D': 'i', '\u012F': 'i', '\u0131': 'i',
  '\u0134': 'J', '\u0135': 'j',
  '\u0136': 'K', '\u0137': 'k', '\u0138': 'k',
  '\u0139': 'L', '\u013B': 'L', '\u013D': 'L', '\u013F': 'L', '\u0141': 'L',
  '\u013A': 'l', '\u013C': 'l', '\u013E': 'l', '\u0140': 'l', '\u0142': 'l',
  '\u0143': 'N', '\u0145': 'N', '\u0147': 'N', '\u014A': 'N',
  '\u0144': 'n', '\u0146': 'n', '\u0148': 'n', '\u014B': 'n',
  '\u014C': 'O', '\u014E': 'O', '\u0150': 'O',
  '\u014D': 'o', '\u014F': 'o', '\u0151': 'o',
  '\u0154': 'R', '\u0156': 'R', '\u0158': 'R',
  '\u0155': 'r', '\u0157': 'r', '\u0159': 'r',
  '\u015A': 'S', '\u015C': 'S', '\u015E': 'S', '\u0160': 'S',
  '\u015B': 's', '\u015D': 's', '\u015F': 's', '\u0161': 's',
  '\u0162': 'T', '\u0164': 'T', '\u0166': 'T',
  '\u0163': 't', '\u0165': 't', '\u0167': 't',
  '\u0168': 'U', '\u016A': 'U', '\u016C': 'U', '\u016E': 'U', '\u0170': 'U', '\u0172': 'U',
  '\u0169': 'u', '\u016B': 'u', '\u016D': 'u', '\u016F': 'u', '\u0171': 'u', '\u0173': 'u',
  '\u0174': 'W', '\u0175': 'w',
  '\u0176': 'Y', '\u0177': 'y', '\u0178': 'Y',
  '\u0179': 'Z', '\u017B': 'Z', '\u017D': 'Z',
  '\u017A': 'z', '\u017C': 'z', '\u017E': 'z',
  '\u0132': 'IJ', '\u0133': 'ij',
  '\u0152': 'Oe', '\u0153': 'oe',
  '\u0149': "'n", '\u017F': 's'
};

/**
 * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
 * letters to basic Latin letters.
 *
 * @private
 * @param {string} letter The matched letter to deburr.
 * @returns {string} Returns the deburred letter.
 */
var deburrLetter = basePropertyOf(deburredLetters);

/** Used to match Latin Unicode letters (excluding mathematical operators). */
var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;

/** Used to compose unicode character classes. */
var rsComboMarksRange$2 = '\\u0300-\\u036f';
var reComboHalfMarksRange$2 = '\\ufe20-\\ufe2f';
var rsComboSymbolsRange$2 = '\\u20d0-\\u20ff';
var rsComboRange$2 = rsComboMarksRange$2 + reComboHalfMarksRange$2 + rsComboSymbolsRange$2;

/** Used to compose unicode capture groups. */
var rsCombo$1 = '[' + rsComboRange$2 + ']';

/**
 * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
 * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
 */
var reComboMark = RegExp(rsCombo$1, 'g');

/**
 * Deburrs `string` by converting
 * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
 * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
 * letters to basic Latin letters and removing
 * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to deburr.
 * @returns {string} Returns the deburred string.
 * @example
 *
 * _.deburr('déjà vu');
 * // => 'deja vu'
 */
function deburr(string) {
  string = toString(string);
  return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
}

/** Used to match words composed of alphanumeric characters. */
var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;

/**
 * Splits an ASCII `string` into an array of its words.
 *
 * @private
 * @param {string} The string to inspect.
 * @returns {Array} Returns the words of `string`.
 */
function asciiWords(string) {
  return string.match(reAsciiWord) || [];
}

/** Used to detect strings that need a more robust regexp to match words. */
var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2,}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;

/**
 * Checks if `string` contains a word composed of Unicode symbols.
 *
 * @private
 * @param {string} string The string to inspect.
 * @returns {boolean} Returns `true` if a word is found, else `false`.
 */
function hasUnicodeWord(string) {
  return reHasUnicodeWord.test(string);
}

/** Used to compose unicode character classes. */
var rsAstralRange$2 = '\\ud800-\\udfff';
var rsComboMarksRange$3 = '\\u0300-\\u036f';
var reComboHalfMarksRange$3 = '\\ufe20-\\ufe2f';
var rsComboSymbolsRange$3 = '\\u20d0-\\u20ff';
var rsComboRange$3 = rsComboMarksRange$3 + reComboHalfMarksRange$3 + rsComboSymbolsRange$3;
var rsDingbatRange = '\\u2700-\\u27bf';
var rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff';
var rsMathOpRange = '\\xac\\xb1\\xd7\\xf7';
var rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf';
var rsPunctuationRange = '\\u2000-\\u206f';
var rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000';
var rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde';
var rsVarRange$2 = '\\ufe0e\\ufe0f';
var rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;

/** Used to compose unicode capture groups. */
var rsApos$1 = '[\'\u2019]';
var rsBreak = '[' + rsBreakRange + ']';
var rsCombo$2 = '[' + rsComboRange$3 + ']';
var rsDigits = '\\d+';
var rsDingbat = '[' + rsDingbatRange + ']';
var rsLower = '[' + rsLowerRange + ']';
var rsMisc = '[^' + rsAstralRange$2 + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']';
var rsFitz$1 = '\\ud83c[\\udffb-\\udfff]';
var rsModifier$1 = '(?:' + rsCombo$2 + '|' + rsFitz$1 + ')';
var rsNonAstral$1 = '[^' + rsAstralRange$2 + ']';
var rsRegional$1 = '(?:\\ud83c[\\udde6-\\uddff]){2}';
var rsSurrPair$1 = '[\\ud800-\\udbff][\\udc00-\\udfff]';
var rsUpper = '[' + rsUpperRange + ']';
var rsZWJ$2 = '\\u200d';

/** Used to compose unicode regexes. */
var rsMiscLower = '(?:' + rsLower + '|' + rsMisc + ')';
var rsMiscUpper = '(?:' + rsUpper + '|' + rsMisc + ')';
var rsOptContrLower = '(?:' + rsApos$1 + '(?:d|ll|m|re|s|t|ve))?';
var rsOptContrUpper = '(?:' + rsApos$1 + '(?:D|LL|M|RE|S|T|VE))?';
var reOptMod$1 = rsModifier$1 + '?';
var rsOptVar$1 = '[' + rsVarRange$2 + ']?';
var rsOptJoin$1 = '(?:' + rsZWJ$2 + '(?:' + [rsNonAstral$1, rsRegional$1, rsSurrPair$1].join('|') + ')' + rsOptVar$1 + reOptMod$1 + ')*';
var rsOrdLower = '\\d*(?:(?:1st|2nd|3rd|(?![123])\\dth)\\b)';
var rsOrdUpper = '\\d*(?:(?:1ST|2ND|3RD|(?![123])\\dTH)\\b)';
var rsSeq$1 = rsOptVar$1 + reOptMod$1 + rsOptJoin$1;
var rsEmoji = '(?:' + [rsDingbat, rsRegional$1, rsSurrPair$1].join('|') + ')' + rsSeq$1;

/** Used to match complex or compound words. */
var reUnicodeWord = RegExp([rsUpper + '?' + rsLower + '+' + rsOptContrLower + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')', rsMiscUpper + '+' + rsOptContrUpper + '(?=' + [rsBreak, rsUpper + rsMiscLower, '$'].join('|') + ')', rsUpper + '?' + rsMiscLower + '+' + rsOptContrLower, rsUpper + '+' + rsOptContrUpper, rsOrdUpper, rsOrdLower, rsDigits, rsEmoji].join('|'), 'g');

/**
 * Splits a Unicode `string` into an array of its words.
 *
 * @private
 * @param {string} The string to inspect.
 * @returns {Array} Returns the words of `string`.
 */
function unicodeWords(string) {
    return string.match(reUnicodeWord) || [];
}

/**
 * Splits `string` into an array of its words.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to inspect.
 * @param {RegExp|string} [pattern] The pattern to match words.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Array} Returns the words of `string`.
 * @example
 *
 * _.words('fred, barney, & pebbles');
 * // => ['fred', 'barney', 'pebbles']
 *
 * _.words('fred, barney, & pebbles', /[^, ]+/g);
 * // => ['fred', 'barney', '&', 'pebbles']
 */
function words(string, pattern, guard) {
  string = toString(string);
  pattern = guard ? undefined : pattern;

  if (pattern === undefined) {
    return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
  }
  return string.match(pattern) || [];
}

/** Used to compose unicode capture groups. */
var rsApos = '[\'\u2019]';

/** Used to match apostrophes. */
var reApos = RegExp(rsApos, 'g');

/**
 * Creates a function like `_.camelCase`.
 *
 * @private
 * @param {Function} callback The function to combine each word.
 * @returns {Function} Returns the new compounder function.
 */
function createCompounder(callback) {
  return function (string) {
    return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
  };
}

/**
 * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to convert.
 * @returns {string} Returns the camel cased string.
 * @example
 *
 * _.camelCase('Foo Bar');
 * // => 'fooBar'
 *
 * _.camelCase('--foo-bar--');
 * // => 'fooBar'
 *
 * _.camelCase('__FOO_BAR__');
 * // => 'fooBar'
 */
var camelCase = createCompounder(function (result, word, index) {
  word = word.toLowerCase();
  return result + (index ? capitalize(word) : word);
});

/**
 * Casts `value` as an array if it's not one.
 *
 * @static
 * @memberOf _
 * @since 4.4.0
 * @category Lang
 * @param {*} value The value to inspect.
 * @returns {Array} Returns the cast array.
 * @example
 *
 * _.castArray(1);
 * // => [1]
 *
 * _.castArray({ 'a': 1 });
 * // => [{ 'a': 1 }]
 *
 * _.castArray('abc');
 * // => ['abc']
 *
 * _.castArray(null);
 * // => [null]
 *
 * _.castArray(undefined);
 * // => [undefined]
 *
 * _.castArray();
 * // => []
 *
 * var array = [1, 2, 3];
 * console.log(_.castArray(array) === array);
 * // => true
 */
function castArray() {
  if (!arguments.length) {
    return [];
  }
  var value = arguments[0];
  return isArray(value) ? value : [value];
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMin$2 = Math.min;

/**
 * Creates a function like `_.round`.
 *
 * @private
 * @param {string} methodName The name of the `Math` method to use when rounding.
 * @returns {Function} Returns the new round function.
 */
function createRound(methodName) {
  var func = Math[methodName];
  return function (number, precision) {
    number = toNumber(number);
    precision = precision == null ? 0 : nativeMin$2(toInteger(precision), 292);
    if (precision) {
      // Shift with exponential notation to avoid floating-point issues.
      // See [MDN](https://mdn.io/round#Examples) for more details.
      var pair = (toString(number) + 'e').split('e'),
          value = func(pair[0] + 'e' + (+pair[1] + precision));

      pair = (toString(value) + 'e').split('e');
      return +(pair[0] + 'e' + (+pair[1] - precision));
    }
    return func(number);
  };
}

/**
 * Computes `number` rounded up to `precision`.
 *
 * @static
 * @memberOf _
 * @since 3.10.0
 * @category Math
 * @param {number} number The number to round up.
 * @param {number} [precision=0] The precision to round up to.
 * @returns {number} Returns the rounded up number.
 * @example
 *
 * _.ceil(4.006);
 * // => 5
 *
 * _.ceil(6.004, 2);
 * // => 6.01
 *
 * _.ceil(6040, -2);
 * // => 6100
 */
var ceil = createRound('ceil');

/**
 * Creates a `lodash` wrapper instance that wraps `value` with explicit method
 * chain sequences enabled. The result of such sequences must be unwrapped
 * with `_#value`.
 *
 * @static
 * @memberOf _
 * @since 1.3.0
 * @category Seq
 * @param {*} value The value to wrap.
 * @returns {Object} Returns the new `lodash` wrapper instance.
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'age': 36 },
 *   { 'user': 'fred',    'age': 40 },
 *   { 'user': 'pebbles', 'age': 1 }
 * ];
 *
 * var youngest = _
 *   .chain(users)
 *   .sortBy('age')
 *   .map(function(o) {
 *     return o.user + ' is ' + o.age;
 *   })
 *   .head()
 *   .value();
 * // => 'pebbles is 1'
 */
function chain(value) {
  var result = lodash(value);
  result.__chain__ = true;
  return result;
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeCeil = Math.ceil;
var nativeMax$4 = Math.max;

/**
 * Creates an array of elements split into groups the length of `size`.
 * If `array` can't be split evenly, the final chunk will be the remaining
 * elements.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to process.
 * @param {number} [size=1] The length of each chunk
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Array} Returns the new array of chunks.
 * @example
 *
 * _.chunk(['a', 'b', 'c', 'd'], 2);
 * // => [['a', 'b'], ['c', 'd']]
 *
 * _.chunk(['a', 'b', 'c', 'd'], 3);
 * // => [['a', 'b', 'c'], ['d']]
 */
function chunk(array, size, guard) {
  if (guard ? isIterateeCall(array, size, guard) : size === undefined) {
    size = 1;
  } else {
    size = nativeMax$4(toInteger(size), 0);
  }
  var length = array == null ? 0 : array.length;
  if (!length || size < 1) {
    return [];
  }
  var index = 0,
      resIndex = 0,
      result = Array(nativeCeil(length / size));

  while (index < length) {
    result[resIndex++] = baseSlice(array, index, index += size);
  }
  return result;
}

/**
 * The base implementation of `_.clamp` which doesn't coerce arguments.
 *
 * @private
 * @param {number} number The number to clamp.
 * @param {number} [lower] The lower bound.
 * @param {number} upper The upper bound.
 * @returns {number} Returns the clamped number.
 */
function baseClamp(number, lower, upper) {
  if (number === number) {
    if (upper !== undefined) {
      number = number <= upper ? number : upper;
    }
    if (lower !== undefined) {
      number = number >= lower ? number : lower;
    }
  }
  return number;
}

/**
 * Clamps `number` within the inclusive `lower` and `upper` bounds.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Number
 * @param {number} number The number to clamp.
 * @param {number} [lower] The lower bound.
 * @param {number} upper The upper bound.
 * @returns {number} Returns the clamped number.
 * @example
 *
 * _.clamp(-10, -5, 5);
 * // => -5
 *
 * _.clamp(10, -5, 5);
 * // => 5
 */
function clamp(number, lower, upper) {
  if (upper === undefined) {
    upper = lower;
    lower = undefined;
  }
  if (upper !== undefined) {
    upper = toNumber(upper);
    upper = upper === upper ? upper : 0;
  }
  if (lower !== undefined) {
    lower = toNumber(lower);
    lower = lower === lower ? lower : 0;
  }
  return baseClamp(toNumber(number), lower, upper);
}

/**
 * Removes all key-value entries from the stack.
 *
 * @private
 * @name clear
 * @memberOf Stack
 */
function stackClear() {
  this.__data__ = new ListCache();
  this.size = 0;
}

/**
 * Removes `key` and its value from the stack.
 *
 * @private
 * @name delete
 * @memberOf Stack
 * @param {string} key The key of the value to remove.
 * @returns {boolean} Returns `true` if the entry was removed, else `false`.
 */
function stackDelete(key) {
  var data = this.__data__,
      result = data['delete'](key);

  this.size = data.size;
  return result;
}

/**
 * Gets the stack value for `key`.
 *
 * @private
 * @name get
 * @memberOf Stack
 * @param {string} key The key of the value to get.
 * @returns {*} Returns the entry value.
 */
function stackGet(key) {
  return this.__data__.get(key);
}

/**
 * Checks if a stack value for `key` exists.
 *
 * @private
 * @name has
 * @memberOf Stack
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function stackHas(key) {
  return this.__data__.has(key);
}

/** Used as the size to enable large array optimizations. */
var LARGE_ARRAY_SIZE = 200;

/**
 * Sets the stack `key` to `value`.
 *
 * @private
 * @name set
 * @memberOf Stack
 * @param {string} key The key of the value to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns the stack cache instance.
 */
function stackSet(key, value) {
  var data = this.__data__;
  if (data instanceof ListCache) {
    var pairs = data.__data__;
    if (!Map || pairs.length < LARGE_ARRAY_SIZE - 1) {
      pairs.push([key, value]);
      this.size = ++data.size;
      return this;
    }
    data = this.__data__ = new MapCache(pairs);
  }
  data.set(key, value);
  this.size = data.size;
  return this;
}

/**
 * Creates a stack cache object to store key-value pairs.
 *
 * @private
 * @constructor
 * @param {Array} [entries] The key-value pairs to cache.
 */
function Stack(entries) {
  var data = this.__data__ = new ListCache(entries);
  this.size = data.size;
}

// Add methods to `Stack`.
Stack.prototype.clear = stackClear;
Stack.prototype['delete'] = stackDelete;
Stack.prototype.get = stackGet;
Stack.prototype.has = stackHas;
Stack.prototype.set = stackSet;

/**
 * The base implementation of `_.assign` without support for multiple sources
 * or `customizer` functions.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @returns {Object} Returns `object`.
 */
function baseAssign(object, source) {
  return object && copyObject(source, keys(source), object);
}

/**
 * The base implementation of `_.assignIn` without support for multiple sources
 * or `customizer` functions.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @returns {Object} Returns `object`.
 */
function baseAssignIn(object, source) {
  return object && copyObject(source, keysIn$1(source), object);
}

/** Detect free variable `exports`. */
var freeExports$2 = (typeof exports === 'undefined' ? 'undefined' : _typeof(exports)) == 'object' && exports && !exports.nodeType && exports;

/** Detect free variable `module`. */
var freeModule$2 = freeExports$2 && (typeof module === 'undefined' ? 'undefined' : _typeof(module)) == 'object' && module && !module.nodeType && module;

/** Detect the popular CommonJS extension `module.exports`. */
var moduleExports$2 = freeModule$2 && freeModule$2.exports === freeExports$2;

/** Built-in value references. */
var Buffer$1 = moduleExports$2 ? root.Buffer : undefined;
var allocUnsafe = Buffer$1 ? Buffer$1.allocUnsafe : undefined;

/**
 * Creates a clone of  `buffer`.
 *
 * @private
 * @param {Buffer} buffer The buffer to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Buffer} Returns the cloned buffer.
 */
function cloneBuffer(buffer, isDeep) {
  if (isDeep) {
    return buffer.slice();
  }
  var length = buffer.length,
      result = allocUnsafe ? allocUnsafe(length) : new buffer.constructor(length);

  buffer.copy(result);
  return result;
}

/**
 * A specialized version of `_.filter` for arrays without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {Array} Returns the new filtered array.
 */
function arrayFilter(array, predicate) {
  var index = -1,
      length = array == null ? 0 : array.length,
      resIndex = 0,
      result = [];

  while (++index < length) {
    var value = array[index];
    if (predicate(value, index, array)) {
      result[resIndex++] = value;
    }
  }
  return result;
}

/**
 * This method returns a new empty array.
 *
 * @static
 * @memberOf _
 * @since 4.13.0
 * @category Util
 * @returns {Array} Returns the new empty array.
 * @example
 *
 * var arrays = _.times(2, _.stubArray);
 *
 * console.log(arrays);
 * // => [[], []]
 *
 * console.log(arrays[0] === arrays[1]);
 * // => false
 */
function stubArray() {
  return [];
}

/** Used for built-in method references. */
var objectProto$15 = Object.prototype;

/** Built-in value references. */
var propertyIsEnumerable$1 = objectProto$15.propertyIsEnumerable;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeGetSymbols = Object.getOwnPropertySymbols;

/**
 * Creates an array of the own enumerable symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of symbols.
 */
var getSymbols = !nativeGetSymbols ? stubArray : function (object) {
  if (object == null) {
    return [];
  }
  object = Object(object);
  return arrayFilter(nativeGetSymbols(object), function (symbol) {
    return propertyIsEnumerable$1.call(object, symbol);
  });
};

/**
 * Copies own symbols of `source` to `object`.
 *
 * @private
 * @param {Object} source The object to copy symbols from.
 * @param {Object} [object={}] The object to copy symbols to.
 * @returns {Object} Returns `object`.
 */
function copySymbols(source, object) {
  return copyObject(source, getSymbols(source), object);
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeGetSymbols$1 = Object.getOwnPropertySymbols;

/**
 * Creates an array of the own and inherited enumerable symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of symbols.
 */
var getSymbolsIn = !nativeGetSymbols$1 ? stubArray : function (object) {
  var result = [];
  while (object) {
    arrayPush(result, getSymbols(object));
    object = getPrototype(object);
  }
  return result;
};

/**
 * Copies own and inherited symbols of `source` to `object`.
 *
 * @private
 * @param {Object} source The object to copy symbols from.
 * @param {Object} [object={}] The object to copy symbols to.
 * @returns {Object} Returns `object`.
 */
function copySymbolsIn(source, object) {
  return copyObject(source, getSymbolsIn(source), object);
}

/**
 * The base implementation of `getAllKeys` and `getAllKeysIn` which uses
 * `keysFunc` and `symbolsFunc` to get the enumerable property names and
 * symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Function} keysFunc The function to get the keys of `object`.
 * @param {Function} symbolsFunc The function to get the symbols of `object`.
 * @returns {Array} Returns the array of property names and symbols.
 */
function baseGetAllKeys(object, keysFunc, symbolsFunc) {
  var result = keysFunc(object);
  return isArray(object) ? result : arrayPush(result, symbolsFunc(object));
}

/**
 * Creates an array of own enumerable property names and symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names and symbols.
 */
function getAllKeys(object) {
  return baseGetAllKeys(object, keys, getSymbols);
}

/**
 * Creates an array of own and inherited enumerable property names and
 * symbols of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property names and symbols.
 */
function getAllKeysIn(object) {
  return baseGetAllKeys(object, keysIn$1, getSymbolsIn);
}

/* Built-in method references that are verified to be native. */
var DataView = getNative(root, 'DataView');

/* Built-in method references that are verified to be native. */
var Promise$1 = getNative(root, 'Promise');

/* Built-in method references that are verified to be native. */
var Set = getNative(root, 'Set');

/** `Object#toString` result references. */
var mapTag$2 = '[object Map]';
var objectTag$3 = '[object Object]';
var promiseTag = '[object Promise]';
var setTag$2 = '[object Set]';
var weakMapTag$2 = '[object WeakMap]';

var dataViewTag$2 = '[object DataView]';

/** Used to detect maps, sets, and weakmaps. */
var dataViewCtorString = toSource(DataView);
var mapCtorString = toSource(Map);
var promiseCtorString = toSource(Promise$1);
var setCtorString = toSource(Set);
var weakMapCtorString = toSource(WeakMap);

/**
 * Gets the `toStringTag` of `value`.
 *
 * @private
 * @param {*} value The value to query.
 * @returns {string} Returns the `toStringTag`.
 */
var getTag = baseGetTag;

// Fallback for data views, maps, sets, and weak maps in IE 11 and promises in Node.js < 6.
if (DataView && getTag(new DataView(new ArrayBuffer(1))) != dataViewTag$2 || Map && getTag(new Map()) != mapTag$2 || Promise$1 && getTag(Promise$1.resolve()) != promiseTag || Set && getTag(new Set()) != setTag$2 || WeakMap && getTag(new WeakMap()) != weakMapTag$2) {
    getTag = function getTag(value) {
        var result = baseGetTag(value),
            Ctor = result == objectTag$3 ? value.constructor : undefined,
            ctorString = Ctor ? toSource(Ctor) : '';

        if (ctorString) {
            switch (ctorString) {
                case dataViewCtorString:
                    return dataViewTag$2;
                case mapCtorString:
                    return mapTag$2;
                case promiseCtorString:
                    return promiseTag;
                case setCtorString:
                    return setTag$2;
                case weakMapCtorString:
                    return weakMapTag$2;
            }
        }
        return result;
    };
}

var getTag$1 = getTag;

/** Used for built-in method references. */
var objectProto$16 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$13 = objectProto$16.hasOwnProperty;

/**
 * Initializes an array clone.
 *
 * @private
 * @param {Array} array The array to clone.
 * @returns {Array} Returns the initialized clone.
 */
function initCloneArray(array) {
  var length = array.length,
      result = array.constructor(length);

  // Add properties assigned by `RegExp#exec`.
  if (length && typeof array[0] == 'string' && hasOwnProperty$13.call(array, 'index')) {
    result.index = array.index;
    result.input = array.input;
  }
  return result;
}

/** Built-in value references. */
var Uint8Array = root.Uint8Array;

/**
 * Creates a clone of `arrayBuffer`.
 *
 * @private
 * @param {ArrayBuffer} arrayBuffer The array buffer to clone.
 * @returns {ArrayBuffer} Returns the cloned array buffer.
 */
function cloneArrayBuffer(arrayBuffer) {
  var result = new arrayBuffer.constructor(arrayBuffer.byteLength);
  new Uint8Array(result).set(new Uint8Array(arrayBuffer));
  return result;
}

/**
 * Creates a clone of `dataView`.
 *
 * @private
 * @param {Object} dataView The data view to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned data view.
 */
function cloneDataView(dataView, isDeep) {
  var buffer = isDeep ? cloneArrayBuffer(dataView.buffer) : dataView.buffer;
  return new dataView.constructor(buffer, dataView.byteOffset, dataView.byteLength);
}

/**
 * Adds the key-value `pair` to `map`.
 *
 * @private
 * @param {Object} map The map to modify.
 * @param {Array} pair The key-value pair to add.
 * @returns {Object} Returns `map`.
 */
function addMapEntry(map, pair) {
  // Don't return `map.set` because it's not chainable in IE 11.
  map.set(pair[0], pair[1]);
  return map;
}

/**
 * Converts `map` to its key-value pairs.
 *
 * @private
 * @param {Object} map The map to convert.
 * @returns {Array} Returns the key-value pairs.
 */
function mapToArray(map) {
  var index = -1,
      result = Array(map.size);

  map.forEach(function (value, key) {
    result[++index] = [key, value];
  });
  return result;
}

/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG$1 = 1;

/**
 * Creates a clone of `map`.
 *
 * @private
 * @param {Object} map The map to clone.
 * @param {Function} cloneFunc The function to clone values.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned map.
 */
function cloneMap(map, isDeep, cloneFunc) {
  var array = isDeep ? cloneFunc(mapToArray(map), CLONE_DEEP_FLAG$1) : mapToArray(map);
  return arrayReduce(array, addMapEntry, new map.constructor());
}

/** Used to match `RegExp` flags from their coerced string values. */
var reFlags = /\w*$/;

/**
 * Creates a clone of `regexp`.
 *
 * @private
 * @param {Object} regexp The regexp to clone.
 * @returns {Object} Returns the cloned regexp.
 */
function cloneRegExp(regexp) {
  var result = new regexp.constructor(regexp.source, reFlags.exec(regexp));
  result.lastIndex = regexp.lastIndex;
  return result;
}

/**
 * Adds `value` to `set`.
 *
 * @private
 * @param {Object} set The set to modify.
 * @param {*} value The value to add.
 * @returns {Object} Returns `set`.
 */
function addSetEntry(set, value) {
  // Don't return `set.add` because it's not chainable in IE 11.
  set.add(value);
  return set;
}

/**
 * Converts `set` to an array of its values.
 *
 * @private
 * @param {Object} set The set to convert.
 * @returns {Array} Returns the values.
 */
function setToArray(set) {
  var index = -1,
      result = Array(set.size);

  set.forEach(function (value) {
    result[++index] = value;
  });
  return result;
}

/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG$2 = 1;

/**
 * Creates a clone of `set`.
 *
 * @private
 * @param {Object} set The set to clone.
 * @param {Function} cloneFunc The function to clone values.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned set.
 */
function cloneSet(set, isDeep, cloneFunc) {
  var array = isDeep ? cloneFunc(setToArray(set), CLONE_DEEP_FLAG$2) : setToArray(set);
  return arrayReduce(array, addSetEntry, new set.constructor());
}

/** Used to convert symbols to primitives and strings. */
var symbolProto$1 = _Symbol ? _Symbol.prototype : undefined;
var symbolValueOf = symbolProto$1 ? symbolProto$1.valueOf : undefined;

/**
 * Creates a clone of the `symbol` object.
 *
 * @private
 * @param {Object} symbol The symbol object to clone.
 * @returns {Object} Returns the cloned symbol object.
 */
function cloneSymbol(symbol) {
  return symbolValueOf ? Object(symbolValueOf.call(symbol)) : {};
}

/**
 * Creates a clone of `typedArray`.
 *
 * @private
 * @param {Object} typedArray The typed array to clone.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the cloned typed array.
 */
function cloneTypedArray(typedArray, isDeep) {
  var buffer = isDeep ? cloneArrayBuffer(typedArray.buffer) : typedArray.buffer;
  return new typedArray.constructor(buffer, typedArray.byteOffset, typedArray.length);
}

/** `Object#toString` result references. */
var boolTag$2 = '[object Boolean]';
var dateTag$2 = '[object Date]';
var mapTag$3 = '[object Map]';
var numberTag$2 = '[object Number]';
var regexpTag$2 = '[object RegExp]';
var setTag$3 = '[object Set]';
var stringTag$2 = '[object String]';
var symbolTag$2 = '[object Symbol]';

var arrayBufferTag$2 = '[object ArrayBuffer]';
var dataViewTag$3 = '[object DataView]';
var float32Tag$2 = '[object Float32Array]';
var float64Tag$2 = '[object Float64Array]';
var int8Tag$2 = '[object Int8Array]';
var int16Tag$2 = '[object Int16Array]';
var int32Tag$2 = '[object Int32Array]';
var uint8Tag$2 = '[object Uint8Array]';
var uint8ClampedTag$2 = '[object Uint8ClampedArray]';
var uint16Tag$2 = '[object Uint16Array]';
var uint32Tag$2 = '[object Uint32Array]';

/**
 * Initializes an object clone based on its `toStringTag`.
 *
 * **Note:** This function only supports cloning values with tags of
 * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
 *
 * @private
 * @param {Object} object The object to clone.
 * @param {string} tag The `toStringTag` of the object to clone.
 * @param {Function} cloneFunc The function to clone values.
 * @param {boolean} [isDeep] Specify a deep clone.
 * @returns {Object} Returns the initialized clone.
 */
function initCloneByTag(object, tag, cloneFunc, isDeep) {
  var Ctor = object.constructor;
  switch (tag) {
    case arrayBufferTag$2:
      return cloneArrayBuffer(object);

    case boolTag$2:
    case dateTag$2:
      return new Ctor(+object);

    case dataViewTag$3:
      return cloneDataView(object, isDeep);

    case float32Tag$2:case float64Tag$2:
    case int8Tag$2:case int16Tag$2:case int32Tag$2:
    case uint8Tag$2:case uint8ClampedTag$2:case uint16Tag$2:case uint32Tag$2:
      return cloneTypedArray(object, isDeep);

    case mapTag$3:
      return cloneMap(object, isDeep, cloneFunc);

    case numberTag$2:
    case stringTag$2:
      return new Ctor(object);

    case regexpTag$2:
      return cloneRegExp(object);

    case setTag$3:
      return cloneSet(object, isDeep, cloneFunc);

    case symbolTag$2:
      return cloneSymbol(object);
  }
}

/**
 * Initializes an object clone.
 *
 * @private
 * @param {Object} object The object to clone.
 * @returns {Object} Returns the initialized clone.
 */
function initCloneObject(object) {
  return typeof object.constructor == 'function' && !isPrototype(object) ? baseCreate(getPrototype(object)) : {};
}

/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG = 1;
var CLONE_FLAT_FLAG = 2;
var CLONE_SYMBOLS_FLAG$1 = 4;

/** `Object#toString` result references. */
var argsTag$2 = '[object Arguments]';
var arrayTag$1 = '[object Array]';
var boolTag$1 = '[object Boolean]';
var dateTag$1 = '[object Date]';
var errorTag$2 = '[object Error]';
var funcTag$2 = '[object Function]';
var genTag$1 = '[object GeneratorFunction]';
var mapTag$1 = '[object Map]';
var numberTag$1 = '[object Number]';
var objectTag$2 = '[object Object]';
var regexpTag$1 = '[object RegExp]';
var setTag$1 = '[object Set]';
var stringTag$1 = '[object String]';
var symbolTag$1 = '[object Symbol]';
var weakMapTag$1 = '[object WeakMap]';

var arrayBufferTag$1 = '[object ArrayBuffer]';
var dataViewTag$1 = '[object DataView]';
var float32Tag$1 = '[object Float32Array]';
var float64Tag$1 = '[object Float64Array]';
var int8Tag$1 = '[object Int8Array]';
var int16Tag$1 = '[object Int16Array]';
var int32Tag$1 = '[object Int32Array]';
var uint8Tag$1 = '[object Uint8Array]';
var uint8ClampedTag$1 = '[object Uint8ClampedArray]';
var uint16Tag$1 = '[object Uint16Array]';
var uint32Tag$1 = '[object Uint32Array]';

/** Used to identify `toStringTag` values supported by `_.clone`. */
var cloneableTags = {};
cloneableTags[argsTag$2] = cloneableTags[arrayTag$1] = cloneableTags[arrayBufferTag$1] = cloneableTags[dataViewTag$1] = cloneableTags[boolTag$1] = cloneableTags[dateTag$1] = cloneableTags[float32Tag$1] = cloneableTags[float64Tag$1] = cloneableTags[int8Tag$1] = cloneableTags[int16Tag$1] = cloneableTags[int32Tag$1] = cloneableTags[mapTag$1] = cloneableTags[numberTag$1] = cloneableTags[objectTag$2] = cloneableTags[regexpTag$1] = cloneableTags[setTag$1] = cloneableTags[stringTag$1] = cloneableTags[symbolTag$1] = cloneableTags[uint8Tag$1] = cloneableTags[uint8ClampedTag$1] = cloneableTags[uint16Tag$1] = cloneableTags[uint32Tag$1] = true;
cloneableTags[errorTag$2] = cloneableTags[funcTag$2] = cloneableTags[weakMapTag$1] = false;

/**
 * The base implementation of `_.clone` and `_.cloneDeep` which tracks
 * traversed objects.
 *
 * @private
 * @param {*} value The value to clone.
 * @param {boolean} bitmask The bitmask flags.
 *  1 - Deep clone
 *  2 - Flatten inherited properties
 *  4 - Clone symbols
 * @param {Function} [customizer] The function to customize cloning.
 * @param {string} [key] The key of `value`.
 * @param {Object} [object] The parent object of `value`.
 * @param {Object} [stack] Tracks traversed objects and their clone counterparts.
 * @returns {*} Returns the cloned value.
 */
function baseClone(value, bitmask, customizer, key, object, stack) {
  var result,
      isDeep = bitmask & CLONE_DEEP_FLAG,
      isFlat = bitmask & CLONE_FLAT_FLAG,
      isFull = bitmask & CLONE_SYMBOLS_FLAG$1;

  if (customizer) {
    result = object ? customizer(value, key, object, stack) : customizer(value);
  }
  if (result !== undefined) {
    return result;
  }
  if (!isObject(value)) {
    return value;
  }
  var isArr = isArray(value);
  if (isArr) {
    result = initCloneArray(value);
    if (!isDeep) {
      return copyArray(value, result);
    }
  } else {
    var tag = getTag$1(value),
        isFunc = tag == funcTag$2 || tag == genTag$1;

    if (isBuffer(value)) {
      return cloneBuffer(value, isDeep);
    }
    if (tag == objectTag$2 || tag == argsTag$2 || isFunc && !object) {
      result = isFlat || isFunc ? {} : initCloneObject(value);
      if (!isDeep) {
        return isFlat ? copySymbolsIn(value, baseAssignIn(result, value)) : copySymbols(value, baseAssign(result, value));
      }
    } else {
      if (!cloneableTags[tag]) {
        return object ? value : {};
      }
      result = initCloneByTag(value, tag, baseClone, isDeep);
    }
  }
  // Check for circular references and return its corresponding clone.
  stack || (stack = new Stack());
  var stacked = stack.get(value);
  if (stacked) {
    return stacked;
  }
  stack.set(value, result);

  var keysFunc = isFull ? isFlat ? getAllKeysIn : getAllKeys : isFlat ? keysIn : keys;

  var props = isArr ? undefined : keysFunc(value);
  arrayEach(props || value, function (subValue, key) {
    if (props) {
      key = subValue;
      subValue = value[key];
    }
    // Recursively populate clone (susceptible to call stack limits).
    assignValue(result, key, baseClone(subValue, bitmask, customizer, key, value, stack));
  });
  return result;
}

/** Used to compose bitmasks for cloning. */
var CLONE_SYMBOLS_FLAG = 4;

/**
 * Creates a shallow clone of `value`.
 *
 * **Note:** This method is loosely based on the
 * [structured clone algorithm](https://mdn.io/Structured_clone_algorithm)
 * and supports cloning arrays, array buffers, booleans, date objects, maps,
 * numbers, `Object` objects, regexes, sets, strings, symbols, and typed
 * arrays. The own enumerable properties of `arguments` objects are cloned
 * as plain objects. An empty object is returned for uncloneable values such
 * as error objects, functions, DOM nodes, and WeakMaps.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to clone.
 * @returns {*} Returns the cloned value.
 * @see _.cloneDeep
 * @example
 *
 * var objects = [{ 'a': 1 }, { 'b': 2 }];
 *
 * var shallow = _.clone(objects);
 * console.log(shallow[0] === objects[0]);
 * // => true
 */
function clone(value) {
  return baseClone(value, CLONE_SYMBOLS_FLAG);
}

/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG$3 = 1;
var CLONE_SYMBOLS_FLAG$2 = 4;

/**
 * This method is like `_.clone` except that it recursively clones `value`.
 *
 * @static
 * @memberOf _
 * @since 1.0.0
 * @category Lang
 * @param {*} value The value to recursively clone.
 * @returns {*} Returns the deep cloned value.
 * @see _.clone
 * @example
 *
 * var objects = [{ 'a': 1 }, { 'b': 2 }];
 *
 * var deep = _.cloneDeep(objects);
 * console.log(deep[0] === objects[0]);
 * // => false
 */
function cloneDeep(value) {
  return baseClone(value, CLONE_DEEP_FLAG$3 | CLONE_SYMBOLS_FLAG$2);
}

/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG$4 = 1;
var CLONE_SYMBOLS_FLAG$3 = 4;

/**
 * This method is like `_.cloneWith` except that it recursively clones `value`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to recursively clone.
 * @param {Function} [customizer] The function to customize cloning.
 * @returns {*} Returns the deep cloned value.
 * @see _.cloneWith
 * @example
 *
 * function customizer(value) {
 *   if (_.isElement(value)) {
 *     return value.cloneNode(true);
 *   }
 * }
 *
 * var el = _.cloneDeepWith(document.body, customizer);
 *
 * console.log(el === document.body);
 * // => false
 * console.log(el.nodeName);
 * // => 'BODY'
 * console.log(el.childNodes.length);
 * // => 20
 */
function cloneDeepWith(value, customizer) {
  customizer = typeof customizer == 'function' ? customizer : undefined;
  return baseClone(value, CLONE_DEEP_FLAG$4 | CLONE_SYMBOLS_FLAG$3, customizer);
}

/** Used to compose bitmasks for cloning. */
var CLONE_SYMBOLS_FLAG$4 = 4;

/**
 * This method is like `_.clone` except that it accepts `customizer` which
 * is invoked to produce the cloned value. If `customizer` returns `undefined`,
 * cloning is handled by the method instead. The `customizer` is invoked with
 * up to four arguments; (value [, index|key, object, stack]).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to clone.
 * @param {Function} [customizer] The function to customize cloning.
 * @returns {*} Returns the cloned value.
 * @see _.cloneDeepWith
 * @example
 *
 * function customizer(value) {
 *   if (_.isElement(value)) {
 *     return value.cloneNode(false);
 *   }
 * }
 *
 * var el = _.cloneWith(document.body, customizer);
 *
 * console.log(el === document.body);
 * // => false
 * console.log(el.nodeName);
 * // => 'BODY'
 * console.log(el.childNodes.length);
 * // => 0
 */
function cloneWith(value, customizer) {
  customizer = typeof customizer == 'function' ? customizer : undefined;
  return baseClone(value, CLONE_SYMBOLS_FLAG$4, customizer);
}

/**
 * Executes the chain sequence and returns the wrapped result.
 *
 * @name commit
 * @memberOf _
 * @since 3.2.0
 * @category Seq
 * @returns {Object} Returns the new `lodash` wrapper instance.
 * @example
 *
 * var array = [1, 2];
 * var wrapped = _(array).push(3);
 *
 * console.log(array);
 * // => [1, 2]
 *
 * wrapped = wrapped.commit();
 * console.log(array);
 * // => [1, 2, 3]
 *
 * wrapped.last();
 * // => 3
 *
 * console.log(array);
 * // => [1, 2, 3]
 */
function wrapperCommit() {
  return new LodashWrapper(this.value(), this.__chain__);
}

/**
 * Creates an array with all falsey values removed. The values `false`, `null`,
 * `0`, `""`, `undefined`, and `NaN` are falsey.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The array to compact.
 * @returns {Array} Returns the new array of filtered values.
 * @example
 *
 * _.compact([0, 1, false, 2, '', 3]);
 * // => [1, 2, 3]
 */
function compact(array) {
  var index = -1,
      length = array == null ? 0 : array.length,
      resIndex = 0,
      result = [];

  while (++index < length) {
    var value = array[index];
    if (value) {
      result[resIndex++] = value;
    }
  }
  return result;
}

/**
 * Creates a new array concatenating `array` with any additional arrays
 * and/or values.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to concatenate.
 * @param {...*} [values] The values to concatenate.
 * @returns {Array} Returns the new concatenated array.
 * @example
 *
 * var array = [1];
 * var other = _.concat(array, 2, [3], [[4]]);
 *
 * console.log(other);
 * // => [1, 2, 3, [4]]
 *
 * console.log(array);
 * // => [1]
 */
function concat() {
  var length = arguments.length;
  if (!length) {
    return [];
  }
  var args = Array(length - 1),
      array = arguments[0],
      index = length;

  while (index--) {
    args[index - 1] = arguments[index];
  }
  return arrayPush(isArray(array) ? copyArray(array) : [array], baseFlatten(args, 1));
}

/** Used to stand-in for `undefined` hash values. */
var HASH_UNDEFINED$2 = '__lodash_hash_undefined__';

/**
 * Adds `value` to the array cache.
 *
 * @private
 * @name add
 * @memberOf SetCache
 * @alias push
 * @param {*} value The value to cache.
 * @returns {Object} Returns the cache instance.
 */
function setCacheAdd(value) {
  this.__data__.set(value, HASH_UNDEFINED$2);
  return this;
}

/**
 * Checks if `value` is in the array cache.
 *
 * @private
 * @name has
 * @memberOf SetCache
 * @param {*} value The value to search for.
 * @returns {number} Returns `true` if `value` is found, else `false`.
 */
function setCacheHas(value) {
  return this.__data__.has(value);
}

/**
 *
 * Creates an array cache object to store unique values.
 *
 * @private
 * @constructor
 * @param {Array} [values] The values to cache.
 */
function SetCache(values) {
  var index = -1,
      length = values == null ? 0 : values.length;

  this.__data__ = new MapCache();
  while (++index < length) {
    this.add(values[index]);
  }
}

// Add methods to `SetCache`.
SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
SetCache.prototype.has = setCacheHas;

/**
 * A specialized version of `_.some` for arrays without support for iteratee
 * shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {boolean} Returns `true` if any element passes the predicate check,
 *  else `false`.
 */
function arraySome(array, predicate) {
  var index = -1,
      length = array == null ? 0 : array.length;

  while (++index < length) {
    if (predicate(array[index], index, array)) {
      return true;
    }
  }
  return false;
}

/**
 * Checks if a `cache` value for `key` exists.
 *
 * @private
 * @param {Object} cache The cache to query.
 * @param {string} key The key of the entry to check.
 * @returns {boolean} Returns `true` if an entry for `key` exists, else `false`.
 */
function cacheHas(cache, key) {
  return cache.has(key);
}

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG$2 = 1;
var COMPARE_UNORDERED_FLAG$1 = 2;

/**
 * A specialized version of `baseIsEqualDeep` for arrays with support for
 * partial deep comparisons.
 *
 * @private
 * @param {Array} array The array to compare.
 * @param {Array} other The other array to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} stack Tracks traversed `array` and `other` objects.
 * @returns {boolean} Returns `true` if the arrays are equivalent, else `false`.
 */
function equalArrays(array, other, bitmask, customizer, equalFunc, stack) {
  var isPartial = bitmask & COMPARE_PARTIAL_FLAG$2,
      arrLength = array.length,
      othLength = other.length;

  if (arrLength != othLength && !(isPartial && othLength > arrLength)) {
    return false;
  }
  // Assume cyclic values are equal.
  var stacked = stack.get(array);
  if (stacked && stack.get(other)) {
    return stacked == other;
  }
  var index = -1,
      result = true,
      seen = bitmask & COMPARE_UNORDERED_FLAG$1 ? new SetCache() : undefined;

  stack.set(array, other);
  stack.set(other, array);

  // Ignore non-index properties.
  while (++index < arrLength) {
    var arrValue = array[index],
        othValue = other[index];

    if (customizer) {
      var compared = isPartial ? customizer(othValue, arrValue, index, other, array, stack) : customizer(arrValue, othValue, index, array, other, stack);
    }
    if (compared !== undefined) {
      if (compared) {
        continue;
      }
      result = false;
      break;
    }
    // Recursively compare arrays (susceptible to call stack limits).
    if (seen) {
      if (!arraySome(other, function (othValue, othIndex) {
        if (!cacheHas(seen, othIndex) && (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
          return seen.push(othIndex);
        }
      })) {
        result = false;
        break;
      }
    } else if (!(arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) {
      result = false;
      break;
    }
  }
  stack['delete'](array);
  stack['delete'](other);
  return result;
}

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG$3 = 1;
var COMPARE_UNORDERED_FLAG$2 = 2;

/** `Object#toString` result references. */
var boolTag$3 = '[object Boolean]';
var dateTag$3 = '[object Date]';
var errorTag$3 = '[object Error]';
var mapTag$4 = '[object Map]';
var numberTag$3 = '[object Number]';
var regexpTag$3 = '[object RegExp]';
var setTag$4 = '[object Set]';
var stringTag$3 = '[object String]';
var symbolTag$3 = '[object Symbol]';

var arrayBufferTag$3 = '[object ArrayBuffer]';
var dataViewTag$4 = '[object DataView]';

/** Used to convert symbols to primitives and strings. */
var symbolProto$2 = _Symbol ? _Symbol.prototype : undefined;
var symbolValueOf$1 = symbolProto$2 ? symbolProto$2.valueOf : undefined;

/**
 * A specialized version of `baseIsEqualDeep` for comparing objects of
 * the same `toStringTag`.
 *
 * **Note:** This function only supports comparing values with tags of
 * `Boolean`, `Date`, `Error`, `Number`, `RegExp`, or `String`.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {string} tag The `toStringTag` of the objects to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} stack Tracks traversed `object` and `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) {
  switch (tag) {
    case dataViewTag$4:
      if (object.byteLength != other.byteLength || object.byteOffset != other.byteOffset) {
        return false;
      }
      object = object.buffer;
      other = other.buffer;

    case arrayBufferTag$3:
      if (object.byteLength != other.byteLength || !equalFunc(new Uint8Array(object), new Uint8Array(other))) {
        return false;
      }
      return true;

    case boolTag$3:
    case dateTag$3:
    case numberTag$3:
      // Coerce booleans to `1` or `0` and dates to milliseconds.
      // Invalid dates are coerced to `NaN`.
      return eq(+object, +other);

    case errorTag$3:
      return object.name == other.name && object.message == other.message;

    case regexpTag$3:
    case stringTag$3:
      // Coerce regexes to strings and treat strings, primitives and objects,
      // as equal. See http://www.ecma-international.org/ecma-262/7.0/#sec-regexp.prototype.tostring
      // for more details.
      return object == other + '';

    case mapTag$4:
      var convert = mapToArray;

    case setTag$4:
      var isPartial = bitmask & COMPARE_PARTIAL_FLAG$3;
      convert || (convert = setToArray);

      if (object.size != other.size && !isPartial) {
        return false;
      }
      // Assume cyclic values are equal.
      var stacked = stack.get(object);
      if (stacked) {
        return stacked == other;
      }
      bitmask |= COMPARE_UNORDERED_FLAG$2;

      // Recursively compare objects (susceptible to call stack limits).
      stack.set(object, other);
      var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack);
      stack['delete'](object);
      return result;

    case symbolTag$3:
      if (symbolValueOf$1) {
        return symbolValueOf$1.call(object) == symbolValueOf$1.call(other);
      }
  }
  return false;
}

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG$4 = 1;

/** Used for built-in method references. */
var objectProto$18 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$15 = objectProto$18.hasOwnProperty;

/**
 * A specialized version of `baseIsEqualDeep` for objects with support for
 * partial deep comparisons.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} stack Tracks traversed `object` and `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function equalObjects(object, other, bitmask, customizer, equalFunc, stack) {
  var isPartial = bitmask & COMPARE_PARTIAL_FLAG$4,
      objProps = getAllKeys(object),
      objLength = objProps.length,
      othProps = getAllKeys(other),
      othLength = othProps.length;

  if (objLength != othLength && !isPartial) {
    return false;
  }
  var index = objLength;
  while (index--) {
    var key = objProps[index];
    if (!(isPartial ? key in other : hasOwnProperty$15.call(other, key))) {
      return false;
    }
  }
  // Assume cyclic values are equal.
  var stacked = stack.get(object);
  if (stacked && stack.get(other)) {
    return stacked == other;
  }
  var result = true;
  stack.set(object, other);
  stack.set(other, object);

  var skipCtor = isPartial;
  while (++index < objLength) {
    key = objProps[index];
    var objValue = object[key],
        othValue = other[key];

    if (customizer) {
      var compared = isPartial ? customizer(othValue, objValue, key, other, object, stack) : customizer(objValue, othValue, key, object, other, stack);
    }
    // Recursively compare objects (susceptible to call stack limits).
    if (!(compared === undefined ? objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack) : compared)) {
      result = false;
      break;
    }
    skipCtor || (skipCtor = key == 'constructor');
  }
  if (result && !skipCtor) {
    var objCtor = object.constructor,
        othCtor = other.constructor;

    // Non `Object` object instances with different constructors are not equal.
    if (objCtor != othCtor && 'constructor' in object && 'constructor' in other && !(typeof objCtor == 'function' && objCtor instanceof objCtor && typeof othCtor == 'function' && othCtor instanceof othCtor)) {
      result = false;
    }
  }
  stack['delete'](object);
  stack['delete'](other);
  return result;
}

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG$1 = 1;

/** `Object#toString` result references. */
var argsTag$3 = '[object Arguments]';
var arrayTag$2 = '[object Array]';
var objectTag$4 = '[object Object]';

/** Used for built-in method references. */
var objectProto$17 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$14 = objectProto$17.hasOwnProperty;

/**
 * A specialized version of `baseIsEqual` for arrays and objects which performs
 * deep comparisons and tracks traversed objects enabling objects with circular
 * references to be compared.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details.
 * @param {Function} customizer The function to customize comparisons.
 * @param {Function} equalFunc The function to determine equivalents of values.
 * @param {Object} [stack] Tracks traversed `object` and `other` objects.
 * @returns {boolean} Returns `true` if the objects are equivalent, else `false`.
 */
function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) {
  var objIsArr = isArray(object),
      othIsArr = isArray(other),
      objTag = objIsArr ? arrayTag$2 : getTag$1(object),
      othTag = othIsArr ? arrayTag$2 : getTag$1(other);

  objTag = objTag == argsTag$3 ? objectTag$4 : objTag;
  othTag = othTag == argsTag$3 ? objectTag$4 : othTag;

  var objIsObj = objTag == objectTag$4,
      othIsObj = othTag == objectTag$4,
      isSameTag = objTag == othTag;

  if (isSameTag && isBuffer(object)) {
    if (!isBuffer(other)) {
      return false;
    }
    objIsArr = true;
    objIsObj = false;
  }
  if (isSameTag && !objIsObj) {
    stack || (stack = new Stack());
    return objIsArr || isTypedArray(object) ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
  }
  if (!(bitmask & COMPARE_PARTIAL_FLAG$1)) {
    var objIsWrapped = objIsObj && hasOwnProperty$14.call(object, '__wrapped__'),
        othIsWrapped = othIsObj && hasOwnProperty$14.call(other, '__wrapped__');

    if (objIsWrapped || othIsWrapped) {
      var objUnwrapped = objIsWrapped ? object.value() : object,
          othUnwrapped = othIsWrapped ? other.value() : other;

      stack || (stack = new Stack());
      return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack);
    }
  }
  if (!isSameTag) {
    return false;
  }
  stack || (stack = new Stack());
  return equalObjects(object, other, bitmask, customizer, equalFunc, stack);
}

/**
 * The base implementation of `_.isEqual` which supports partial comparisons
 * and tracks traversed objects.
 *
 * @private
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @param {boolean} bitmask The bitmask flags.
 *  1 - Unordered comparison
 *  2 - Partial comparison
 * @param {Function} [customizer] The function to customize comparisons.
 * @param {Object} [stack] Tracks traversed `value` and `other` objects.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 */
function baseIsEqual(value, other, bitmask, customizer, stack) {
  if (value === other) {
    return true;
  }
  if (value == null || other == null || !isObjectLike(value) && !isObjectLike(other)) {
    return value !== value && other !== other;
  }
  return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack);
}

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG = 1;
var COMPARE_UNORDERED_FLAG = 2;

/**
 * The base implementation of `_.isMatch` without support for iteratee shorthands.
 *
 * @private
 * @param {Object} object The object to inspect.
 * @param {Object} source The object of property values to match.
 * @param {Array} matchData The property names, values, and compare flags to match.
 * @param {Function} [customizer] The function to customize comparisons.
 * @returns {boolean} Returns `true` if `object` is a match, else `false`.
 */
function baseIsMatch(object, source, matchData, customizer) {
  var index = matchData.length,
      length = index,
      noCustomizer = !customizer;

  if (object == null) {
    return !length;
  }
  object = Object(object);
  while (index--) {
    var data = matchData[index];
    if (noCustomizer && data[2] ? data[1] !== object[data[0]] : !(data[0] in object)) {
      return false;
    }
  }
  while (++index < length) {
    data = matchData[index];
    var key = data[0],
        objValue = object[key],
        srcValue = data[1];

    if (noCustomizer && data[2]) {
      if (objValue === undefined && !(key in object)) {
        return false;
      }
    } else {
      var stack = new Stack();
      if (customizer) {
        var result = customizer(objValue, srcValue, key, object, source, stack);
      }
      if (!(result === undefined ? baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG | COMPARE_UNORDERED_FLAG, customizer, stack) : result)) {
        return false;
      }
    }
  }
  return true;
}

/**
 * Checks if `value` is suitable for strict equality comparisons, i.e. `===`.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` if suitable for strict
 *  equality comparisons, else `false`.
 */
function isStrictComparable(value) {
  return value === value && !isObject(value);
}

/**
 * Gets the property names, values, and compare flags of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @returns {Array} Returns the match data of `object`.
 */
function getMatchData(object) {
  var result = keys(object),
      length = result.length;

  while (length--) {
    var key = result[length],
        value = object[key];

    result[length] = [key, value, isStrictComparable(value)];
  }
  return result;
}

/**
 * A specialized version of `matchesProperty` for source values suitable
 * for strict equality comparisons, i.e. `===`.
 *
 * @private
 * @param {string} key The key of the property to get.
 * @param {*} srcValue The value to match.
 * @returns {Function} Returns the new spec function.
 */
function matchesStrictComparable(key, srcValue) {
  return function (object) {
    if (object == null) {
      return false;
    }
    return object[key] === srcValue && (srcValue !== undefined || key in Object(object));
  };
}

/**
 * The base implementation of `_.matches` which doesn't clone `source`.
 *
 * @private
 * @param {Object} source The object of property values to match.
 * @returns {Function} Returns the new spec function.
 */
function baseMatches(source) {
  var matchData = getMatchData(source);
  if (matchData.length == 1 && matchData[0][2]) {
    return matchesStrictComparable(matchData[0][0], matchData[0][1]);
  }
  return function (object) {
    return object === source || baseIsMatch(object, source, matchData);
  };
}

/**
 * The base implementation of `_.hasIn` without support for deep paths.
 *
 * @private
 * @param {Object} [object] The object to query.
 * @param {Array|string} key The key to check.
 * @returns {boolean} Returns `true` if `key` exists, else `false`.
 */
function baseHasIn(object, key) {
  return object != null && key in Object(object);
}

/**
 * Checks if `path` exists on `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array|string} path The path to check.
 * @param {Function} hasFunc The function to check properties.
 * @returns {boolean} Returns `true` if `path` exists, else `false`.
 */
function hasPath(object, path, hasFunc) {
  path = castPath(path, object);

  var index = -1,
      length = path.length,
      result = false;

  while (++index < length) {
    var key = toKey(path[index]);
    if (!(result = object != null && hasFunc(object, key))) {
      break;
    }
    object = object[key];
  }
  if (result || ++index != length) {
    return result;
  }
  length = object == null ? 0 : object.length;
  return !!length && isLength(length) && isIndex(key, length) && (isArray(object) || isArguments(object));
}

/**
 * Checks if `path` is a direct or inherited property of `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The object to query.
 * @param {Array|string} path The path to check.
 * @returns {boolean} Returns `true` if `path` exists, else `false`.
 * @example
 *
 * var object = _.create({ 'a': _.create({ 'b': 2 }) });
 *
 * _.hasIn(object, 'a');
 * // => true
 *
 * _.hasIn(object, 'a.b');
 * // => true
 *
 * _.hasIn(object, ['a', 'b']);
 * // => true
 *
 * _.hasIn(object, 'b');
 * // => false
 */
function hasIn(object, path) {
  return object != null && hasPath(object, path, baseHasIn);
}

/** Used to compose bitmasks for value comparisons. */
var COMPARE_PARTIAL_FLAG$5 = 1;
var COMPARE_UNORDERED_FLAG$3 = 2;

/**
 * The base implementation of `_.matchesProperty` which doesn't clone `srcValue`.
 *
 * @private
 * @param {string} path The path of the property to get.
 * @param {*} srcValue The value to match.
 * @returns {Function} Returns the new spec function.
 */
function baseMatchesProperty(path, srcValue) {
  if (isKey(path) && isStrictComparable(srcValue)) {
    return matchesStrictComparable(toKey(path), srcValue);
  }
  return function (object) {
    var objValue = get$1(object, path);
    return objValue === undefined && objValue === srcValue ? hasIn(object, path) : baseIsEqual(srcValue, objValue, COMPARE_PARTIAL_FLAG$5 | COMPARE_UNORDERED_FLAG$3);
  };
}

/**
 * The base implementation of `_.property` without support for deep paths.
 *
 * @private
 * @param {string} key The key of the property to get.
 * @returns {Function} Returns the new accessor function.
 */
function baseProperty(key) {
  return function (object) {
    return object == null ? undefined : object[key];
  };
}

/**
 * A specialized version of `baseProperty` which supports deep paths.
 *
 * @private
 * @param {Array|string} path The path of the property to get.
 * @returns {Function} Returns the new accessor function.
 */
function basePropertyDeep(path) {
  return function (object) {
    return baseGet(object, path);
  };
}

/**
 * Creates a function that returns the value at `path` of a given object.
 *
 * @static
 * @memberOf _
 * @since 2.4.0
 * @category Util
 * @param {Array|string} path The path of the property to get.
 * @returns {Function} Returns the new accessor function.
 * @example
 *
 * var objects = [
 *   { 'a': { 'b': 2 } },
 *   { 'a': { 'b': 1 } }
 * ];
 *
 * _.map(objects, _.property('a.b'));
 * // => [2, 1]
 *
 * _.map(_.sortBy(objects, _.property(['a', 'b'])), 'a.b');
 * // => [1, 2]
 */
function property(path) {
  return isKey(path) ? baseProperty(toKey(path)) : basePropertyDeep(path);
}

/**
 * The base implementation of `_.iteratee`.
 *
 * @private
 * @param {*} [value=_.identity] The value to convert to an iteratee.
 * @returns {Function} Returns the iteratee.
 */
function baseIteratee(value) {
  // Don't store the `typeof` result in a variable to avoid a JIT bug in Safari 9.
  // See https://bugs.webkit.org/show_bug.cgi?id=156034 for more details.
  if (typeof value == 'function') {
    return value;
  }
  if (value == null) {
    return identity;
  }
  if ((typeof value === 'undefined' ? 'undefined' : _typeof(value)) == 'object') {
    return isArray(value) ? baseMatchesProperty(value[0], value[1]) : baseMatches(value);
  }
  return property(value);
}

/** Error message constants. */
var FUNC_ERROR_TEXT$4 = 'Expected a function';

/**
 * Creates a function that iterates over `pairs` and invokes the corresponding
 * function of the first predicate to return truthy. The predicate-function
 * pairs are invoked with the `this` binding and arguments of the created
 * function.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Util
 * @param {Array} pairs The predicate-function pairs.
 * @returns {Function} Returns the new composite function.
 * @example
 *
 * var func = _.cond([
 *   [_.matches({ 'a': 1 }),           _.constant('matches A')],
 *   [_.conforms({ 'b': _.isNumber }), _.constant('matches B')],
 *   [_.stubTrue,                      _.constant('no match')]
 * ]);
 *
 * func({ 'a': 1, 'b': 2 });
 * // => 'matches A'
 *
 * func({ 'a': 0, 'b': 1 });
 * // => 'matches B'
 *
 * func({ 'a': '1', 'b': '2' });
 * // => 'no match'
 */
function cond(pairs) {
  var length = pairs == null ? 0 : pairs.length,
      toIteratee = baseIteratee;

  pairs = !length ? [] : arrayMap(pairs, function (pair) {
    if (typeof pair[1] != 'function') {
      throw new TypeError(FUNC_ERROR_TEXT$4);
    }
    return [toIteratee(pair[0]), pair[1]];
  });

  return baseRest(function (args) {
    var index = -1;
    while (++index < length) {
      var pair = pairs[index];
      if (apply(pair[0], this, args)) {
        return apply(pair[1], this, args);
      }
    }
  });
}

/**
 * The base implementation of `_.conformsTo` which accepts `props` to check.
 *
 * @private
 * @param {Object} object The object to inspect.
 * @param {Object} source The object of property predicates to conform to.
 * @returns {boolean} Returns `true` if `object` conforms, else `false`.
 */
function baseConformsTo(object, source, props) {
  var length = props.length;
  if (object == null) {
    return !length;
  }
  object = Object(object);
  while (length--) {
    var key = props[length],
        predicate = source[key],
        value = object[key];

    if (value === undefined && !(key in object) || !predicate(value)) {
      return false;
    }
  }
  return true;
}

/**
 * The base implementation of `_.conforms` which doesn't clone `source`.
 *
 * @private
 * @param {Object} source The object of property predicates to conform to.
 * @returns {Function} Returns the new spec function.
 */
function baseConforms(source) {
  var props = keys(source);
  return function (object) {
    return baseConformsTo(object, source, props);
  };
}

/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG$5 = 1;

/**
 * Creates a function that invokes the predicate properties of `source` with
 * the corresponding property values of a given object, returning `true` if
 * all predicates return truthy, else `false`.
 *
 * **Note:** The created function is equivalent to `_.conformsTo` with
 * `source` partially applied.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Util
 * @param {Object} source The object of property predicates to conform to.
 * @returns {Function} Returns the new spec function.
 * @example
 *
 * var objects = [
 *   { 'a': 2, 'b': 1 },
 *   { 'a': 1, 'b': 2 }
 * ];
 *
 * _.filter(objects, _.conforms({ 'b': function(n) { return n > 1; } }));
 * // => [{ 'a': 1, 'b': 2 }]
 */
function conforms(source) {
  return baseConforms(baseClone(source, CLONE_DEEP_FLAG$5));
}

/**
 * Checks if `object` conforms to `source` by invoking the predicate
 * properties of `source` with the corresponding property values of `object`.
 *
 * **Note:** This method is equivalent to `_.conforms` when `source` is
 * partially applied.
 *
 * @static
 * @memberOf _
 * @since 4.14.0
 * @category Lang
 * @param {Object} object The object to inspect.
 * @param {Object} source The object of property predicates to conform to.
 * @returns {boolean} Returns `true` if `object` conforms, else `false`.
 * @example
 *
 * var object = { 'a': 1, 'b': 2 };
 *
 * _.conformsTo(object, { 'b': function(n) { return n > 1; } });
 * // => true
 *
 * _.conformsTo(object, { 'b': function(n) { return n > 2; } });
 * // => false
 */
function conformsTo(object, source) {
  return source == null || baseConformsTo(object, source, keys(source));
}

/**
 * A specialized version of `baseAggregator` for arrays.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} setter The function to set `accumulator` values.
 * @param {Function} iteratee The iteratee to transform keys.
 * @param {Object} accumulator The initial aggregated object.
 * @returns {Function} Returns `accumulator`.
 */
function arrayAggregator(array, setter, iteratee, accumulator) {
  var index = -1,
      length = array == null ? 0 : array.length;

  while (++index < length) {
    var value = array[index];
    setter(accumulator, value, iteratee(value), array);
  }
  return accumulator;
}

/**
 * Creates a base function for methods like `_.forIn` and `_.forOwn`.
 *
 * @private
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new base function.
 */
function createBaseFor(fromRight) {
  return function (object, iteratee, keysFunc) {
    var index = -1,
        iterable = Object(object),
        props = keysFunc(object),
        length = props.length;

    while (length--) {
      var key = props[fromRight ? length : ++index];
      if (iteratee(iterable[key], key, iterable) === false) {
        break;
      }
    }
    return object;
  };
}

/**
 * The base implementation of `baseForOwn` which iterates over `object`
 * properties returned by `keysFunc` and invokes `iteratee` for each property.
 * Iteratee functions may exit iteration early by explicitly returning `false`.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {Function} keysFunc The function to get the keys of `object`.
 * @returns {Object} Returns `object`.
 */
var baseFor = createBaseFor();

/**
 * The base implementation of `_.forOwn` without support for iteratee shorthands.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Object} Returns `object`.
 */
function baseForOwn(object, iteratee) {
  return object && baseFor(object, iteratee, keys);
}

/**
 * Creates a `baseEach` or `baseEachRight` function.
 *
 * @private
 * @param {Function} eachFunc The function to iterate over a collection.
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new base function.
 */
function createBaseEach(eachFunc, fromRight) {
  return function (collection, iteratee) {
    if (collection == null) {
      return collection;
    }
    if (!isArrayLike(collection)) {
      return eachFunc(collection, iteratee);
    }
    var length = collection.length,
        index = fromRight ? length : -1,
        iterable = Object(collection);

    while (fromRight ? index-- : ++index < length) {
      if (iteratee(iterable[index], index, iterable) === false) {
        break;
      }
    }
    return collection;
  };
}

/**
 * The base implementation of `_.forEach` without support for iteratee shorthands.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array|Object} Returns `collection`.
 */
var baseEach = createBaseEach(baseForOwn);

/**
 * Aggregates elements of `collection` on `accumulator` with keys transformed
 * by `iteratee` and values set by `setter`.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} setter The function to set `accumulator` values.
 * @param {Function} iteratee The iteratee to transform keys.
 * @param {Object} accumulator The initial aggregated object.
 * @returns {Function} Returns `accumulator`.
 */
function baseAggregator(collection, setter, iteratee, accumulator) {
  baseEach(collection, function (value, key, collection) {
    setter(accumulator, value, iteratee(value), collection);
  });
  return accumulator;
}

/**
 * Creates a function like `_.groupBy`.
 *
 * @private
 * @param {Function} setter The function to set accumulator values.
 * @param {Function} [initializer] The accumulator object initializer.
 * @returns {Function} Returns the new aggregator function.
 */
function createAggregator(setter, initializer) {
  return function (collection, iteratee) {
    var func = isArray(collection) ? arrayAggregator : baseAggregator,
        accumulator = initializer ? initializer() : {};

    return func(collection, setter, baseIteratee(iteratee, 2), accumulator);
  };
}

/** Used for built-in method references. */
var objectProto$19 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$16 = objectProto$19.hasOwnProperty;

/**
 * Creates an object composed of keys generated from the results of running
 * each element of `collection` thru `iteratee`. The corresponding value of
 * each key is the number of times the key was returned by `iteratee`. The
 * iteratee is invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 0.5.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
 * @returns {Object} Returns the composed aggregate object.
 * @example
 *
 * _.countBy([6.1, 4.2, 6.3], Math.floor);
 * // => { '4': 1, '6': 2 }
 *
 * // The `_.property` iteratee shorthand.
 * _.countBy(['one', 'two', 'three'], 'length');
 * // => { '3': 2, '5': 1 }
 */
var countBy = createAggregator(function (result, value, key) {
  if (hasOwnProperty$16.call(result, key)) {
    ++result[key];
  } else {
    baseAssignValue(result, key, 1);
  }
});

/**
 * Creates an object that inherits from the `prototype` object. If a
 * `properties` object is given, its own enumerable string keyed properties
 * are assigned to the created object.
 *
 * @static
 * @memberOf _
 * @since 2.3.0
 * @category Object
 * @param {Object} prototype The object to inherit from.
 * @param {Object} [properties] The properties to assign to the object.
 * @returns {Object} Returns the new object.
 * @example
 *
 * function Shape() {
 *   this.x = 0;
 *   this.y = 0;
 * }
 *
 * function Circle() {
 *   Shape.call(this);
 * }
 *
 * Circle.prototype = _.create(Shape.prototype, {
 *   'constructor': Circle
 * });
 *
 * var circle = new Circle;
 * circle instanceof Circle;
 * // => true
 *
 * circle instanceof Shape;
 * // => true
 */
function create$1(prototype, properties) {
  var result = baseCreate(prototype);
  return properties == null ? result : baseAssign(result, properties);
}

/** Used to compose bitmasks for function metadata. */
var WRAP_CURRY_FLAG$5 = 8;

/**
 * Creates a function that accepts arguments of `func` and either invokes
 * `func` returning its result, if at least `arity` number of arguments have
 * been provided, or returns a function that accepts the remaining `func`
 * arguments, and so on. The arity of `func` may be specified if `func.length`
 * is not sufficient.
 *
 * The `_.curry.placeholder` value, which defaults to `_` in monolithic builds,
 * may be used as a placeholder for provided arguments.
 *
 * **Note:** This method doesn't set the "length" property of curried functions.
 *
 * @static
 * @memberOf _
 * @since 2.0.0
 * @category Function
 * @param {Function} func The function to curry.
 * @param {number} [arity=func.length] The arity of `func`.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Function} Returns the new curried function.
 * @example
 *
 * var abc = function(a, b, c) {
 *   return [a, b, c];
 * };
 *
 * var curried = _.curry(abc);
 *
 * curried(1)(2)(3);
 * // => [1, 2, 3]
 *
 * curried(1, 2)(3);
 * // => [1, 2, 3]
 *
 * curried(1, 2, 3);
 * // => [1, 2, 3]
 *
 * // Curried with placeholders.
 * curried(1)(_, 3)(2);
 * // => [1, 2, 3]
 */
function curry(func, arity, guard) {
  arity = guard ? undefined : arity;
  var result = createWrap(func, WRAP_CURRY_FLAG$5, undefined, undefined, undefined, undefined, undefined, arity);
  result.placeholder = curry.placeholder;
  return result;
}

// Assign default placeholders.
curry.placeholder = {};

/** Used to compose bitmasks for function metadata. */
var WRAP_CURRY_RIGHT_FLAG$3 = 16;

/**
 * This method is like `_.curry` except that arguments are applied to `func`
 * in the manner of `_.partialRight` instead of `_.partial`.
 *
 * The `_.curryRight.placeholder` value, which defaults to `_` in monolithic
 * builds, may be used as a placeholder for provided arguments.
 *
 * **Note:** This method doesn't set the "length" property of curried functions.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Function
 * @param {Function} func The function to curry.
 * @param {number} [arity=func.length] The arity of `func`.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Function} Returns the new curried function.
 * @example
 *
 * var abc = function(a, b, c) {
 *   return [a, b, c];
 * };
 *
 * var curried = _.curryRight(abc);
 *
 * curried(3)(2)(1);
 * // => [1, 2, 3]
 *
 * curried(2, 3)(1);
 * // => [1, 2, 3]
 *
 * curried(1, 2, 3);
 * // => [1, 2, 3]
 *
 * // Curried with placeholders.
 * curried(3)(1, _)(2);
 * // => [1, 2, 3]
 */
function curryRight(func, arity, guard) {
  arity = guard ? undefined : arity;
  var result = createWrap(func, WRAP_CURRY_RIGHT_FLAG$3, undefined, undefined, undefined, undefined, undefined, arity);
  result.placeholder = curryRight.placeholder;
  return result;
}

// Assign default placeholders.
curryRight.placeholder = {};

/**
 * Gets the timestamp of the number of milliseconds that have elapsed since
 * the Unix epoch (1 January 1970 00:00:00 UTC).
 *
 * @static
 * @memberOf _
 * @since 2.4.0
 * @category Date
 * @returns {number} Returns the timestamp.
 * @example
 *
 * _.defer(function(stamp) {
 *   console.log(_.now() - stamp);
 * }, _.now());
 * // => Logs the number of milliseconds it took for the deferred invocation.
 */
var now = function now() {
  return root.Date.now();
};

/** Error message constants. */
var FUNC_ERROR_TEXT$5 = 'Expected a function';

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$5 = Math.max;
var nativeMin$3 = Math.min;

/**
 * Creates a debounced function that delays invoking `func` until after `wait`
 * milliseconds have elapsed since the last time the debounced function was
 * invoked. The debounced function comes with a `cancel` method to cancel
 * delayed `func` invocations and a `flush` method to immediately invoke them.
 * Provide `options` to indicate whether `func` should be invoked on the
 * leading and/or trailing edge of the `wait` timeout. The `func` is invoked
 * with the last arguments provided to the debounced function. Subsequent
 * calls to the debounced function return the result of the last `func`
 * invocation.
 *
 * **Note:** If `leading` and `trailing` options are `true`, `func` is
 * invoked on the trailing edge of the timeout only if the debounced function
 * is invoked more than once during the `wait` timeout.
 *
 * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
 * until to the next tick, similar to `setTimeout` with a timeout of `0`.
 *
 * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
 * for details over the differences between `_.debounce` and `_.throttle`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to debounce.
 * @param {number} [wait=0] The number of milliseconds to delay.
 * @param {Object} [options={}] The options object.
 * @param {boolean} [options.leading=false]
 *  Specify invoking on the leading edge of the timeout.
 * @param {number} [options.maxWait]
 *  The maximum time `func` is allowed to be delayed before it's invoked.
 * @param {boolean} [options.trailing=true]
 *  Specify invoking on the trailing edge of the timeout.
 * @returns {Function} Returns the new debounced function.
 * @example
 *
 * // Avoid costly calculations while the window size is in flux.
 * jQuery(window).on('resize', _.debounce(calculateLayout, 150));
 *
 * // Invoke `sendMail` when clicked, debouncing subsequent calls.
 * jQuery(element).on('click', _.debounce(sendMail, 300, {
 *   'leading': true,
 *   'trailing': false
 * }));
 *
 * // Ensure `batchLog` is invoked once after 1 second of debounced calls.
 * var debounced = _.debounce(batchLog, 250, { 'maxWait': 1000 });
 * var source = new EventSource('/stream');
 * jQuery(source).on('message', debounced);
 *
 * // Cancel the trailing debounced invocation.
 * jQuery(window).on('popstate', debounced.cancel);
 */
function debounce(func, wait, options) {
  var lastArgs,
      lastThis,
      maxWait,
      result,
      timerId,
      lastCallTime,
      lastInvokeTime = 0,
      leading = false,
      maxing = false,
      trailing = true;

  if (typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT$5);
  }
  wait = toNumber(wait) || 0;
  if (isObject(options)) {
    leading = !!options.leading;
    maxing = 'maxWait' in options;
    maxWait = maxing ? nativeMax$5(toNumber(options.maxWait) || 0, wait) : maxWait;
    trailing = 'trailing' in options ? !!options.trailing : trailing;
  }

  function invokeFunc(time) {
    var args = lastArgs,
        thisArg = lastThis;

    lastArgs = lastThis = undefined;
    lastInvokeTime = time;
    result = func.apply(thisArg, args);
    return result;
  }

  function leadingEdge(time) {
    // Reset any `maxWait` timer.
    lastInvokeTime = time;
    // Start the timer for the trailing edge.
    timerId = setTimeout(timerExpired, wait);
    // Invoke the leading edge.
    return leading ? invokeFunc(time) : result;
  }

  function remainingWait(time) {
    var timeSinceLastCall = time - lastCallTime,
        timeSinceLastInvoke = time - lastInvokeTime,
        result = wait - timeSinceLastCall;

    return maxing ? nativeMin$3(result, maxWait - timeSinceLastInvoke) : result;
  }

  function shouldInvoke(time) {
    var timeSinceLastCall = time - lastCallTime,
        timeSinceLastInvoke = time - lastInvokeTime;

    // Either this is the first call, activity has stopped and we're at the
    // trailing edge, the system time has gone backwards and we're treating
    // it as the trailing edge, or we've hit the `maxWait` limit.
    return lastCallTime === undefined || timeSinceLastCall >= wait || timeSinceLastCall < 0 || maxing && timeSinceLastInvoke >= maxWait;
  }

  function timerExpired() {
    var time = now();
    if (shouldInvoke(time)) {
      return trailingEdge(time);
    }
    // Restart the timer.
    timerId = setTimeout(timerExpired, remainingWait(time));
  }

  function trailingEdge(time) {
    timerId = undefined;

    // Only invoke if we have `lastArgs` which means `func` has been
    // debounced at least once.
    if (trailing && lastArgs) {
      return invokeFunc(time);
    }
    lastArgs = lastThis = undefined;
    return result;
  }

  function cancel() {
    if (timerId !== undefined) {
      clearTimeout(timerId);
    }
    lastInvokeTime = 0;
    lastArgs = lastCallTime = lastThis = timerId = undefined;
  }

  function flush() {
    return timerId === undefined ? result : trailingEdge(now());
  }

  function debounced() {
    var time = now(),
        isInvoking = shouldInvoke(time);

    lastArgs = arguments;
    lastThis = this;
    lastCallTime = time;

    if (isInvoking) {
      if (timerId === undefined) {
        return leadingEdge(lastCallTime);
      }
      if (maxing) {
        // Handle invocations in a tight loop.
        timerId = setTimeout(timerExpired, wait);
        return invokeFunc(lastCallTime);
      }
    }
    if (timerId === undefined) {
      timerId = setTimeout(timerExpired, wait);
    }
    return result;
  }
  debounced.cancel = cancel;
  debounced.flush = flush;
  return debounced;
}

/**
 * Checks `value` to determine whether a default value should be returned in
 * its place. The `defaultValue` is returned if `value` is `NaN`, `null`,
 * or `undefined`.
 *
 * @static
 * @memberOf _
 * @since 4.14.0
 * @category Util
 * @param {*} value The value to check.
 * @param {*} defaultValue The default value.
 * @returns {*} Returns the resolved value.
 * @example
 *
 * _.defaultTo(1, 10);
 * // => 1
 *
 * _.defaultTo(undefined, 10);
 * // => 10
 */
function defaultTo(value, defaultValue) {
  return value == null || value !== value ? defaultValue : value;
}

/** Used for built-in method references. */
var objectProto$20 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$17 = objectProto$20.hasOwnProperty;

/**
 * Used by `_.defaults` to customize its `_.assignIn` use to assign properties
 * of source objects to the destination object for all destination properties
 * that resolve to `undefined`.
 *
 * @private
 * @param {*} objValue The destination value.
 * @param {*} srcValue The source value.
 * @param {string} key The key of the property to assign.
 * @param {Object} object The parent object of `objValue`.
 * @returns {*} Returns the value to assign.
 */
function customDefaultsAssignIn(objValue, srcValue, key, object) {
  if (objValue === undefined || eq(objValue, objectProto$20[key]) && !hasOwnProperty$17.call(object, key)) {
    return srcValue;
  }
  return objValue;
}

/**
 * Assigns own and inherited enumerable string keyed properties of source
 * objects to the destination object for all destination properties that
 * resolve to `undefined`. Source objects are applied from left to right.
 * Once a property is set, additional values of the same property are ignored.
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @returns {Object} Returns `object`.
 * @see _.defaultsDeep
 * @example
 *
 * _.defaults({ 'a': 1 }, { 'b': 2 }, { 'a': 3 });
 * // => { 'a': 1, 'b': 2 }
 */
var defaults$1 = baseRest(function (args) {
  args.push(undefined, customDefaultsAssignIn);
  return apply(assignInWith, undefined, args);
});

/**
 * This function is like `assignValue` except that it doesn't assign
 * `undefined` values.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {string} key The key of the property to assign.
 * @param {*} value The value to assign.
 */
function assignMergeValue(object, key, value) {
  if (value !== undefined && !eq(object[key], value) || value === undefined && !(key in object)) {
    baseAssignValue(object, key, value);
  }
}

/**
 * This method is like `_.isArrayLike` except that it also checks if `value`
 * is an object.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array-like object,
 *  else `false`.
 * @example
 *
 * _.isArrayLikeObject([1, 2, 3]);
 * // => true
 *
 * _.isArrayLikeObject(document.body.children);
 * // => true
 *
 * _.isArrayLikeObject('abc');
 * // => false
 *
 * _.isArrayLikeObject(_.noop);
 * // => false
 */
function isArrayLikeObject(value) {
  return isObjectLike(value) && isArrayLike(value);
}

/**
 * Converts `value` to a plain object flattening inherited enumerable string
 * keyed properties of `value` to own properties of the plain object.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {Object} Returns the converted plain object.
 * @example
 *
 * function Foo() {
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.assign({ 'a': 1 }, new Foo);
 * // => { 'a': 1, 'b': 2 }
 *
 * _.assign({ 'a': 1 }, _.toPlainObject(new Foo));
 * // => { 'a': 1, 'b': 2, 'c': 3 }
 */
function toPlainObject(value) {
  return copyObject(value, keysIn$1(value));
}

/**
 * A specialized version of `baseMerge` for arrays and objects which performs
 * deep merges and tracks traversed objects enabling objects with circular
 * references to be merged.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @param {string} key The key of the value to merge.
 * @param {number} srcIndex The index of `source`.
 * @param {Function} mergeFunc The function to merge values.
 * @param {Function} [customizer] The function to customize assigned values.
 * @param {Object} [stack] Tracks traversed source values and their merged
 *  counterparts.
 */
function baseMergeDeep(object, source, key, srcIndex, mergeFunc, customizer, stack) {
  var objValue = object[key],
      srcValue = source[key],
      stacked = stack.get(srcValue);

  if (stacked) {
    assignMergeValue(object, key, stacked);
    return;
  }
  var newValue = customizer ? customizer(objValue, srcValue, key + '', object, source, stack) : undefined;

  var isCommon = newValue === undefined;

  if (isCommon) {
    var isArr = isArray(srcValue),
        isBuff = !isArr && isBuffer(srcValue),
        isTyped = !isArr && !isBuff && isTypedArray(srcValue);

    newValue = srcValue;
    if (isArr || isBuff || isTyped) {
      if (isArray(objValue)) {
        newValue = objValue;
      } else if (isArrayLikeObject(objValue)) {
        newValue = copyArray(objValue);
      } else if (isBuff) {
        isCommon = false;
        newValue = cloneBuffer(srcValue, true);
      } else if (isTyped) {
        isCommon = false;
        newValue = cloneTypedArray(srcValue, true);
      } else {
        newValue = [];
      }
    } else if (isPlainObject(srcValue) || isArguments(srcValue)) {
      newValue = objValue;
      if (isArguments(objValue)) {
        newValue = toPlainObject(objValue);
      } else if (!isObject(objValue) || srcIndex && isFunction(objValue)) {
        newValue = initCloneObject(srcValue);
      }
    } else {
      isCommon = false;
    }
  }
  if (isCommon) {
    // Recursively merge objects and arrays (susceptible to call stack limits).
    stack.set(srcValue, newValue);
    mergeFunc(newValue, srcValue, srcIndex, customizer, stack);
    stack['delete'](srcValue);
  }
  assignMergeValue(object, key, newValue);
}

/**
 * The base implementation of `_.merge` without support for multiple sources.
 *
 * @private
 * @param {Object} object The destination object.
 * @param {Object} source The source object.
 * @param {number} srcIndex The index of `source`.
 * @param {Function} [customizer] The function to customize merged values.
 * @param {Object} [stack] Tracks traversed source values and their merged
 *  counterparts.
 */
function baseMerge(object, source, srcIndex, customizer, stack) {
  if (object === source) {
    return;
  }
  baseFor(source, function (srcValue, key) {
    if (isObject(srcValue)) {
      stack || (stack = new Stack());
      baseMergeDeep(object, source, key, srcIndex, baseMerge, customizer, stack);
    } else {
      var newValue = customizer ? customizer(object[key], srcValue, key + '', object, source, stack) : undefined;

      if (newValue === undefined) {
        newValue = srcValue;
      }
      assignMergeValue(object, key, newValue);
    }
  }, keysIn$1);
}

/**
 * Used by `_.defaultsDeep` to customize its `_.merge` use to merge source
 * objects into destination objects that are passed thru.
 *
 * @private
 * @param {*} objValue The destination value.
 * @param {*} srcValue The source value.
 * @param {string} key The key of the property to merge.
 * @param {Object} object The parent object of `objValue`.
 * @param {Object} source The parent object of `srcValue`.
 * @param {Object} [stack] Tracks traversed source values and their merged
 *  counterparts.
 * @returns {*} Returns the value to assign.
 */
function customDefaultsMerge(objValue, srcValue, key, object, source, stack) {
  if (isObject(objValue) && isObject(srcValue)) {
    // Recursively merge objects and arrays (susceptible to call stack limits).
    stack.set(srcValue, objValue);
    baseMerge(objValue, srcValue, undefined, customDefaultsMerge, stack);
    stack['delete'](srcValue);
  }
  return objValue;
}

/**
 * This method is like `_.merge` except that it accepts `customizer` which
 * is invoked to produce the merged values of the destination and source
 * properties. If `customizer` returns `undefined`, merging is handled by the
 * method instead. The `customizer` is invoked with six arguments:
 * (objValue, srcValue, key, object, source, stack).
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} sources The source objects.
 * @param {Function} customizer The function to customize assigned values.
 * @returns {Object} Returns `object`.
 * @example
 *
 * function customizer(objValue, srcValue) {
 *   if (_.isArray(objValue)) {
 *     return objValue.concat(srcValue);
 *   }
 * }
 *
 * var object = { 'a': [1], 'b': [2] };
 * var other = { 'a': [3], 'b': [4] };
 *
 * _.mergeWith(object, other, customizer);
 * // => { 'a': [1, 3], 'b': [2, 4] }
 */
var mergeWith = createAssigner(function (object, source, srcIndex, customizer) {
  baseMerge(object, source, srcIndex, customizer);
});

/**
 * This method is like `_.defaults` except that it recursively assigns
 * default properties.
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 3.10.0
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @returns {Object} Returns `object`.
 * @see _.defaults
 * @example
 *
 * _.defaultsDeep({ 'a': { 'b': 2 } }, { 'a': { 'b': 1, 'c': 3 } });
 * // => { 'a': { 'b': 2, 'c': 3 } }
 */
var defaultsDeep = baseRest(function (args) {
  args.push(undefined, customDefaultsMerge);
  return apply(mergeWith, undefined, args);
});

/** Error message constants. */
var FUNC_ERROR_TEXT$6 = 'Expected a function';

/**
 * The base implementation of `_.delay` and `_.defer` which accepts `args`
 * to provide to `func`.
 *
 * @private
 * @param {Function} func The function to delay.
 * @param {number} wait The number of milliseconds to delay invocation.
 * @param {Array} args The arguments to provide to `func`.
 * @returns {number|Object} Returns the timer id or timeout object.
 */
function baseDelay(func, wait, args) {
  if (typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT$6);
  }
  return setTimeout(function () {
    func.apply(undefined, args);
  }, wait);
}

/**
 * Defers invoking the `func` until the current call stack has cleared. Any
 * additional arguments are provided to `func` when it's invoked.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to defer.
 * @param {...*} [args] The arguments to invoke `func` with.
 * @returns {number} Returns the timer id.
 * @example
 *
 * _.defer(function(text) {
 *   console.log(text);
 * }, 'deferred');
 * // => Logs 'deferred' after one millisecond.
 */
var defer = baseRest(function (func, args) {
  return baseDelay(func, 1, args);
});

/**
 * Invokes `func` after `wait` milliseconds. Any additional arguments are
 * provided to `func` when it's invoked.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to delay.
 * @param {number} wait The number of milliseconds to delay invocation.
 * @param {...*} [args] The arguments to invoke `func` with.
 * @returns {number} Returns the timer id.
 * @example
 *
 * _.delay(function(text) {
 *   console.log(text);
 * }, 1000, 'later');
 * // => Logs 'later' after one second.
 */
var delay = baseRest(function (func, wait, args) {
  return baseDelay(func, toNumber(wait) || 0, args);
});

/**
 * This function is like `arrayIncludes` except that it accepts a comparator.
 *
 * @private
 * @param {Array} [array] The array to inspect.
 * @param {*} target The value to search for.
 * @param {Function} comparator The comparator invoked per element.
 * @returns {boolean} Returns `true` if `target` is found, else `false`.
 */
function arrayIncludesWith(array, value, comparator) {
  var index = -1,
      length = array == null ? 0 : array.length;

  while (++index < length) {
    if (comparator(value, array[index])) {
      return true;
    }
  }
  return false;
}

/** Used as the size to enable large array optimizations. */
var LARGE_ARRAY_SIZE$1 = 200;

/**
 * The base implementation of methods like `_.difference` without support
 * for excluding multiple arrays or iteratee shorthands.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {Array} values The values to exclude.
 * @param {Function} [iteratee] The iteratee invoked per element.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns the new array of filtered values.
 */
function baseDifference(array, values, iteratee, comparator) {
  var index = -1,
      includes = arrayIncludes,
      isCommon = true,
      length = array.length,
      result = [],
      valuesLength = values.length;

  if (!length) {
    return result;
  }
  if (iteratee) {
    values = arrayMap(values, baseUnary(iteratee));
  }
  if (comparator) {
    includes = arrayIncludesWith;
    isCommon = false;
  } else if (values.length >= LARGE_ARRAY_SIZE$1) {
    includes = cacheHas;
    isCommon = false;
    values = new SetCache(values);
  }
  outer: while (++index < length) {
    var value = array[index],
        computed = iteratee == null ? value : iteratee(value);

    value = comparator || value !== 0 ? value : 0;
    if (isCommon && computed === computed) {
      var valuesIndex = valuesLength;
      while (valuesIndex--) {
        if (values[valuesIndex] === computed) {
          continue outer;
        }
      }
      result.push(value);
    } else if (!includes(values, computed, comparator)) {
      result.push(value);
    }
  }
  return result;
}

/**
 * Creates an array of `array` values not included in the other given arrays
 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons. The order and references of result values are
 * determined by the first array.
 *
 * **Note:** Unlike `_.pullAll`, this method returns a new array.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {...Array} [values] The values to exclude.
 * @returns {Array} Returns the new array of filtered values.
 * @see _.without, _.xor
 * @example
 *
 * _.difference([2, 1], [2, 3]);
 * // => [1]
 */
var difference = baseRest(function (array, values) {
  return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true)) : [];
});

/**
 * Gets the last element of `array`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The array to query.
 * @returns {*} Returns the last element of `array`.
 * @example
 *
 * _.last([1, 2, 3]);
 * // => 3
 */
function last(array) {
  var length = array == null ? 0 : array.length;
  return length ? array[length - 1] : undefined;
}

/**
 * This method is like `_.difference` except that it accepts `iteratee` which
 * is invoked for each element of `array` and `values` to generate the criterion
 * by which they're compared. The order and references of result values are
 * determined by the first array. The iteratee is invoked with one argument:
 * (value).
 *
 * **Note:** Unlike `_.pullAllBy`, this method returns a new array.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {...Array} [values] The values to exclude.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {Array} Returns the new array of filtered values.
 * @example
 *
 * _.differenceBy([2.1, 1.2], [2.3, 3.4], Math.floor);
 * // => [1.2]
 *
 * // The `_.property` iteratee shorthand.
 * _.differenceBy([{ 'x': 2 }, { 'x': 1 }], [{ 'x': 1 }], 'x');
 * // => [{ 'x': 2 }]
 */
var differenceBy = baseRest(function (array, values) {
  var iteratee = last(values);
  if (isArrayLikeObject(iteratee)) {
    iteratee = undefined;
  }
  return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), baseIteratee(iteratee, 2)) : [];
});

/**
 * This method is like `_.difference` except that it accepts `comparator`
 * which is invoked to compare elements of `array` to `values`. The order and
 * references of result values are determined by the first array. The comparator
 * is invoked with two arguments: (arrVal, othVal).
 *
 * **Note:** Unlike `_.pullAllWith`, this method returns a new array.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {...Array} [values] The values to exclude.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns the new array of filtered values.
 * @example
 *
 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
 *
 * _.differenceWith(objects, [{ 'x': 1, 'y': 2 }], _.isEqual);
 * // => [{ 'x': 2, 'y': 1 }]
 */
var differenceWith = baseRest(function (array, values) {
  var comparator = last(values);
  if (isArrayLikeObject(comparator)) {
    comparator = undefined;
  }
  return isArrayLikeObject(array) ? baseDifference(array, baseFlatten(values, 1, isArrayLikeObject, true), undefined, comparator) : [];
});

/**
 * Divide two numbers.
 *
 * @static
 * @memberOf _
 * @since 4.7.0
 * @category Math
 * @param {number} dividend The first number in a division.
 * @param {number} divisor The second number in a division.
 * @returns {number} Returns the quotient.
 * @example
 *
 * _.divide(6, 4);
 * // => 1.5
 */
var divide = createMathOperation(function (dividend, divisor) {
  return dividend / divisor;
}, 1);

/**
 * Creates a slice of `array` with `n` elements dropped from the beginning.
 *
 * @static
 * @memberOf _
 * @since 0.5.0
 * @category Array
 * @param {Array} array The array to query.
 * @param {number} [n=1] The number of elements to drop.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Array} Returns the slice of `array`.
 * @example
 *
 * _.drop([1, 2, 3]);
 * // => [2, 3]
 *
 * _.drop([1, 2, 3], 2);
 * // => [3]
 *
 * _.drop([1, 2, 3], 5);
 * // => []
 *
 * _.drop([1, 2, 3], 0);
 * // => [1, 2, 3]
 */
function drop(array, n, guard) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return [];
  }
  n = guard || n === undefined ? 1 : toInteger(n);
  return baseSlice(array, n < 0 ? 0 : n, length);
}

/**
 * Creates a slice of `array` with `n` elements dropped from the end.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to query.
 * @param {number} [n=1] The number of elements to drop.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Array} Returns the slice of `array`.
 * @example
 *
 * _.dropRight([1, 2, 3]);
 * // => [1, 2]
 *
 * _.dropRight([1, 2, 3], 2);
 * // => [1]
 *
 * _.dropRight([1, 2, 3], 5);
 * // => []
 *
 * _.dropRight([1, 2, 3], 0);
 * // => [1, 2, 3]
 */
function dropRight(array, n, guard) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return [];
  }
  n = guard || n === undefined ? 1 : toInteger(n);
  n = length - n;
  return baseSlice(array, 0, n < 0 ? 0 : n);
}

/**
 * The base implementation of methods like `_.dropWhile` and `_.takeWhile`
 * without support for iteratee shorthands.
 *
 * @private
 * @param {Array} array The array to query.
 * @param {Function} predicate The function invoked per iteration.
 * @param {boolean} [isDrop] Specify dropping elements instead of taking them.
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Array} Returns the slice of `array`.
 */
function baseWhile(array, predicate, isDrop, fromRight) {
  var length = array.length,
      index = fromRight ? length : -1;

  while ((fromRight ? index-- : ++index < length) && predicate(array[index], index, array)) {}

  return isDrop ? baseSlice(array, fromRight ? 0 : index, fromRight ? index + 1 : length) : baseSlice(array, fromRight ? index + 1 : 0, fromRight ? length : index);
}

/**
 * Creates a slice of `array` excluding elements dropped from the end.
 * Elements are dropped until `predicate` returns falsey. The predicate is
 * invoked with three arguments: (value, index, array).
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to query.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the slice of `array`.
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'active': true },
 *   { 'user': 'fred',    'active': false },
 *   { 'user': 'pebbles', 'active': false }
 * ];
 *
 * _.dropRightWhile(users, function(o) { return !o.active; });
 * // => objects for ['barney']
 *
 * // The `_.matches` iteratee shorthand.
 * _.dropRightWhile(users, { 'user': 'pebbles', 'active': false });
 * // => objects for ['barney', 'fred']
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.dropRightWhile(users, ['active', false]);
 * // => objects for ['barney']
 *
 * // The `_.property` iteratee shorthand.
 * _.dropRightWhile(users, 'active');
 * // => objects for ['barney', 'fred', 'pebbles']
 */
function dropRightWhile(array, predicate) {
  return array && array.length ? baseWhile(array, baseIteratee(predicate, 3), true, true) : [];
}

/**
 * Creates a slice of `array` excluding elements dropped from the beginning.
 * Elements are dropped until `predicate` returns falsey. The predicate is
 * invoked with three arguments: (value, index, array).
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to query.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the slice of `array`.
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'active': false },
 *   { 'user': 'fred',    'active': false },
 *   { 'user': 'pebbles', 'active': true }
 * ];
 *
 * _.dropWhile(users, function(o) { return !o.active; });
 * // => objects for ['pebbles']
 *
 * // The `_.matches` iteratee shorthand.
 * _.dropWhile(users, { 'user': 'barney', 'active': false });
 * // => objects for ['fred', 'pebbles']
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.dropWhile(users, ['active', false]);
 * // => objects for ['pebbles']
 *
 * // The `_.property` iteratee shorthand.
 * _.dropWhile(users, 'active');
 * // => objects for ['barney', 'fred', 'pebbles']
 */
function dropWhile(array, predicate) {
  return array && array.length ? baseWhile(array, baseIteratee(predicate, 3), true) : [];
}

/**
 * Casts `value` to `identity` if it's not a function.
 *
 * @private
 * @param {*} value The value to inspect.
 * @returns {Function} Returns cast function.
 */
function castFunction(value) {
  return typeof value == 'function' ? value : identity;
}

/**
 * Iterates over elements of `collection` and invokes `iteratee` for each element.
 * The iteratee is invoked with three arguments: (value, index|key, collection).
 * Iteratee functions may exit iteration early by explicitly returning `false`.
 *
 * **Note:** As with other "Collections" methods, objects with a "length"
 * property are iterated like arrays. To avoid this behavior use `_.forIn`
 * or `_.forOwn` for object iteration.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @alias each
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Array|Object} Returns `collection`.
 * @see _.forEachRight
 * @example
 *
 * _.forEach([1, 2], function(value) {
 *   console.log(value);
 * });
 * // => Logs `1` then `2`.
 *
 * _.forEach({ 'a': 1, 'b': 2 }, function(value, key) {
 *   console.log(key);
 * });
 * // => Logs 'a' then 'b' (iteration order is not guaranteed).
 */
function forEach(collection, iteratee) {
  var func = isArray(collection) ? arrayEach : baseEach;
  return func(collection, castFunction(iteratee));
}

/**
 * A specialized version of `_.forEachRight` for arrays without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns `array`.
 */
function arrayEachRight(array, iteratee) {
  var length = array == null ? 0 : array.length;

  while (length--) {
    if (iteratee(array[length], length, array) === false) {
      break;
    }
  }
  return array;
}

/**
 * This function is like `baseFor` except that it iterates over properties
 * in the opposite order.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {Function} keysFunc The function to get the keys of `object`.
 * @returns {Object} Returns `object`.
 */
var baseForRight = createBaseFor(true);

/**
 * The base implementation of `_.forOwnRight` without support for iteratee shorthands.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Object} Returns `object`.
 */
function baseForOwnRight(object, iteratee) {
  return object && baseForRight(object, iteratee, keys);
}

/**
 * The base implementation of `_.forEachRight` without support for iteratee shorthands.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array|Object} Returns `collection`.
 */
var baseEachRight = createBaseEach(baseForOwnRight, true);

/**
 * This method is like `_.forEach` except that it iterates over elements of
 * `collection` from right to left.
 *
 * @static
 * @memberOf _
 * @since 2.0.0
 * @alias eachRight
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Array|Object} Returns `collection`.
 * @see _.forEach
 * @example
 *
 * _.forEachRight([1, 2], function(value) {
 *   console.log(value);
 * });
 * // => Logs `2` then `1`.
 */
function forEachRight(collection, iteratee) {
  var func = isArray(collection) ? arrayEachRight : baseEachRight;
  return func(collection, castFunction(iteratee));
}

/**
 * Checks if `string` ends with the given target string.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to inspect.
 * @param {string} [target] The string to search for.
 * @param {number} [position=string.length] The position to search up to.
 * @returns {boolean} Returns `true` if `string` ends with `target`,
 *  else `false`.
 * @example
 *
 * _.endsWith('abc', 'c');
 * // => true
 *
 * _.endsWith('abc', 'b');
 * // => false
 *
 * _.endsWith('abc', 'b', 2);
 * // => true
 */
function endsWith(string, target, position) {
  string = toString(string);
  target = baseToString(target);

  var length = string.length;
  position = position === undefined ? length : baseClamp(toInteger(position), 0, length);

  var end = position;
  position -= target.length;
  return position >= 0 && string.slice(position, end) == target;
}

/**
 * The base implementation of `_.toPairs` and `_.toPairsIn` which creates an array
 * of key-value pairs for `object` corresponding to the property names of `props`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array} props The property names to get values for.
 * @returns {Object} Returns the key-value pairs.
 */
function baseToPairs(object, props) {
  return arrayMap(props, function (key) {
    return [key, object[key]];
  });
}

/**
 * Converts `set` to its value-value pairs.
 *
 * @private
 * @param {Object} set The set to convert.
 * @returns {Array} Returns the value-value pairs.
 */
function setToPairs(set) {
  var index = -1,
      result = Array(set.size);

  set.forEach(function (value) {
    result[++index] = [value, value];
  });
  return result;
}

/** `Object#toString` result references. */
var mapTag$5 = '[object Map]';
var setTag$5 = '[object Set]';

/**
 * Creates a `_.toPairs` or `_.toPairsIn` function.
 *
 * @private
 * @param {Function} keysFunc The function to get the keys of a given object.
 * @returns {Function} Returns the new pairs function.
 */
function createToPairs(keysFunc) {
  return function (object) {
    var tag = getTag$1(object);
    if (tag == mapTag$5) {
      return mapToArray(object);
    }
    if (tag == setTag$5) {
      return setToPairs(object);
    }
    return baseToPairs(object, keysFunc(object));
  };
}

/**
 * Creates an array of own enumerable string keyed-value pairs for `object`
 * which can be consumed by `_.fromPairs`. If `object` is a map or set, its
 * entries are returned.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @alias entries
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the key-value pairs.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.toPairs(new Foo);
 * // => [['a', 1], ['b', 2]] (iteration order is not guaranteed)
 */
var toPairs = createToPairs(keys);

/**
 * Creates an array of own and inherited enumerable string keyed-value pairs
 * for `object` which can be consumed by `_.fromPairs`. If `object` is a map
 * or set, its entries are returned.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @alias entriesIn
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the key-value pairs.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.toPairsIn(new Foo);
 * // => [['a', 1], ['b', 2], ['c', 3]] (iteration order is not guaranteed)
 */
var toPairsIn = createToPairs(keysIn$1);

/** Used to map characters to HTML entities. */
var htmlEscapes = {
  '&': '&amp;',
  '<': '&lt;',
  '>': '&gt;',
  '"': '&quot;',
  "'": '&#39;'
};

/**
 * Used by `_.escape` to convert characters to HTML entities.
 *
 * @private
 * @param {string} chr The matched character to escape.
 * @returns {string} Returns the escaped character.
 */
var escapeHtmlChar = basePropertyOf(htmlEscapes);

/** Used to match HTML entities and HTML characters. */
var reUnescapedHtml = /[&<>"']/g;
var reHasUnescapedHtml = RegExp(reUnescapedHtml.source);

/**
 * Converts the characters "&", "<", ">", '"', and "'" in `string` to their
 * corresponding HTML entities.
 *
 * **Note:** No other characters are escaped. To escape additional
 * characters use a third-party library like [_he_](https://mths.be/he).
 *
 * Though the ">" character is escaped for symmetry, characters like
 * ">" and "/" don't need escaping in HTML and have no special meaning
 * unless they're part of a tag or unquoted attribute value. See
 * [Mathias Bynens's article](https://mathiasbynens.be/notes/ambiguous-ampersands)
 * (under "semi-related fun fact") for more details.
 *
 * When working with HTML you should always
 * [quote attribute values](http://wonko.com/post/html-escaping) to reduce
 * XSS vectors.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category String
 * @param {string} [string=''] The string to escape.
 * @returns {string} Returns the escaped string.
 * @example
 *
 * _.escape('fred, barney, & pebbles');
 * // => 'fred, barney, &amp; pebbles'
 */
function escape(string) {
    string = toString(string);
    return string && reHasUnescapedHtml.test(string) ? string.replace(reUnescapedHtml, escapeHtmlChar) : string;
}

/**
 * Used to match `RegExp`
 * [syntax characters](http://ecma-international.org/ecma-262/7.0/#sec-patterns).
 */
var reRegExpChar$1 = /[\\^$.*+?()[\]{}|]/g;
var reHasRegExpChar = RegExp(reRegExpChar$1.source);

/**
 * Escapes the `RegExp` special characters "^", "$", "\", ".", "*", "+",
 * "?", "(", ")", "[", "]", "{", "}", and "|" in `string`.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to escape.
 * @returns {string} Returns the escaped string.
 * @example
 *
 * _.escapeRegExp('[lodash](https://lodash.com/)');
 * // => '\[lodash\]\(https://lodash\.com/\)'
 */
function escapeRegExp(string) {
  string = toString(string);
  return string && reHasRegExpChar.test(string) ? string.replace(reRegExpChar$1, '\\$&') : string;
}

/**
 * A specialized version of `_.every` for arrays without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {boolean} Returns `true` if all elements pass the predicate check,
 *  else `false`.
 */
function arrayEvery(array, predicate) {
  var index = -1,
      length = array == null ? 0 : array.length;

  while (++index < length) {
    if (!predicate(array[index], index, array)) {
      return false;
    }
  }
  return true;
}

/**
 * The base implementation of `_.every` without support for iteratee shorthands.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {boolean} Returns `true` if all elements pass the predicate check,
 *  else `false`
 */
function baseEvery(collection, predicate) {
  var result = true;
  baseEach(collection, function (value, index, collection) {
    result = !!predicate(value, index, collection);
    return result;
  });
  return result;
}

/**
 * Checks if `predicate` returns truthy for **all** elements of `collection`.
 * Iteration is stopped once `predicate` returns falsey. The predicate is
 * invoked with three arguments: (value, index|key, collection).
 *
 * **Note:** This method returns `true` for
 * [empty collections](https://en.wikipedia.org/wiki/Empty_set) because
 * [everything is true](https://en.wikipedia.org/wiki/Vacuous_truth) of
 * elements of empty collections.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {boolean} Returns `true` if all elements pass the predicate check,
 *  else `false`.
 * @example
 *
 * _.every([true, 1, null, 'yes'], Boolean);
 * // => false
 *
 * var users = [
 *   { 'user': 'barney', 'age': 36, 'active': false },
 *   { 'user': 'fred',   'age': 40, 'active': false }
 * ];
 *
 * // The `_.matches` iteratee shorthand.
 * _.every(users, { 'user': 'barney', 'active': false });
 * // => false
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.every(users, ['active', false]);
 * // => true
 *
 * // The `_.property` iteratee shorthand.
 * _.every(users, 'active');
 * // => false
 */
function every(collection, predicate, guard) {
  var func = isArray(collection) ? arrayEvery : baseEvery;
  if (guard && isIterateeCall(collection, predicate, guard)) {
    predicate = undefined;
  }
  return func(collection, baseIteratee(predicate, 3));
}

/** Used as references for the maximum length and index of an array. */
var MAX_ARRAY_LENGTH$1 = 4294967295;

/**
 * Converts `value` to an integer suitable for use as the length of an
 * array-like object.
 *
 * **Note:** This method is based on
 * [`ToLength`](http://ecma-international.org/ecma-262/7.0/#sec-tolength).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {number} Returns the converted integer.
 * @example
 *
 * _.toLength(3.2);
 * // => 3
 *
 * _.toLength(Number.MIN_VALUE);
 * // => 0
 *
 * _.toLength(Infinity);
 * // => 4294967295
 *
 * _.toLength('3.2');
 * // => 3
 */
function toLength(value) {
  return value ? baseClamp(toInteger(value), 0, MAX_ARRAY_LENGTH$1) : 0;
}

/**
 * The base implementation of `_.fill` without an iteratee call guard.
 *
 * @private
 * @param {Array} array The array to fill.
 * @param {*} value The value to fill `array` with.
 * @param {number} [start=0] The start position.
 * @param {number} [end=array.length] The end position.
 * @returns {Array} Returns `array`.
 */
function baseFill(array, value, start, end) {
  var length = array.length;

  start = toInteger(start);
  if (start < 0) {
    start = -start > length ? 0 : length + start;
  }
  end = end === undefined || end > length ? length : toInteger(end);
  if (end < 0) {
    end += length;
  }
  end = start > end ? 0 : toLength(end);
  while (start < end) {
    array[start++] = value;
  }
  return array;
}

/**
 * Fills elements of `array` with `value` from `start` up to, but not
 * including, `end`.
 *
 * **Note:** This method mutates `array`.
 *
 * @static
 * @memberOf _
 * @since 3.2.0
 * @category Array
 * @param {Array} array The array to fill.
 * @param {*} value The value to fill `array` with.
 * @param {number} [start=0] The start position.
 * @param {number} [end=array.length] The end position.
 * @returns {Array} Returns `array`.
 * @example
 *
 * var array = [1, 2, 3];
 *
 * _.fill(array, 'a');
 * console.log(array);
 * // => ['a', 'a', 'a']
 *
 * _.fill(Array(3), 2);
 * // => [2, 2, 2]
 *
 * _.fill([4, 6, 8, 10], '*', 1, 3);
 * // => [4, '*', '*', 10]
 */
function fill(array, value, start, end) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return [];
  }
  if (start && typeof start != 'number' && isIterateeCall(array, value, start)) {
    start = 0;
    end = length;
  }
  return baseFill(array, value, start, end);
}

/**
 * The base implementation of `_.filter` without support for iteratee shorthands.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {Array} Returns the new filtered array.
 */
function baseFilter(collection, predicate) {
  var result = [];
  baseEach(collection, function (value, index, collection) {
    if (predicate(value, index, collection)) {
      result.push(value);
    }
  });
  return result;
}

/**
 * Iterates over elements of `collection`, returning an array of all elements
 * `predicate` returns truthy for. The predicate is invoked with three
 * arguments: (value, index|key, collection).
 *
 * **Note:** Unlike `_.remove`, this method returns a new array.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the new filtered array.
 * @see _.reject
 * @example
 *
 * var users = [
 *   { 'user': 'barney', 'age': 36, 'active': true },
 *   { 'user': 'fred',   'age': 40, 'active': false }
 * ];
 *
 * _.filter(users, function(o) { return !o.active; });
 * // => objects for ['fred']
 *
 * // The `_.matches` iteratee shorthand.
 * _.filter(users, { 'age': 36, 'active': true });
 * // => objects for ['barney']
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.filter(users, ['active', false]);
 * // => objects for ['fred']
 *
 * // The `_.property` iteratee shorthand.
 * _.filter(users, 'active');
 * // => objects for ['barney']
 */
function filter(collection, predicate) {
  var func = isArray(collection) ? arrayFilter : baseFilter;
  return func(collection, baseIteratee(predicate, 3));
}

/**
 * Creates a `_.find` or `_.findLast` function.
 *
 * @private
 * @param {Function} findIndexFunc The function to find the collection index.
 * @returns {Function} Returns the new find function.
 */
function createFind(findIndexFunc) {
  return function (collection, predicate, fromIndex) {
    var iterable = Object(collection);
    if (!isArrayLike(collection)) {
      var iteratee = baseIteratee(predicate, 3);
      collection = keys(collection);
      predicate = function predicate(key) {
        return iteratee(iterable[key], key, iterable);
      };
    }
    var index = findIndexFunc(collection, predicate, fromIndex);
    return index > -1 ? iterable[iteratee ? collection[index] : index] : undefined;
  };
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$6 = Math.max;

/**
 * This method is like `_.find` except that it returns the index of the first
 * element `predicate` returns truthy for instead of the element itself.
 *
 * @static
 * @memberOf _
 * @since 1.1.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @param {number} [fromIndex=0] The index to search from.
 * @returns {number} Returns the index of the found element, else `-1`.
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'active': false },
 *   { 'user': 'fred',    'active': false },
 *   { 'user': 'pebbles', 'active': true }
 * ];
 *
 * _.findIndex(users, function(o) { return o.user == 'barney'; });
 * // => 0
 *
 * // The `_.matches` iteratee shorthand.
 * _.findIndex(users, { 'user': 'fred', 'active': false });
 * // => 1
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.findIndex(users, ['active', false]);
 * // => 0
 *
 * // The `_.property` iteratee shorthand.
 * _.findIndex(users, 'active');
 * // => 2
 */
function findIndex(array, predicate, fromIndex) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return -1;
  }
  var index = fromIndex == null ? 0 : toInteger(fromIndex);
  if (index < 0) {
    index = nativeMax$6(length + index, 0);
  }
  return baseFindIndex(array, baseIteratee(predicate, 3), index);
}

/**
 * Iterates over elements of `collection`, returning the first element
 * `predicate` returns truthy for. The predicate is invoked with three
 * arguments: (value, index|key, collection).
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to inspect.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @param {number} [fromIndex=0] The index to search from.
 * @returns {*} Returns the matched element, else `undefined`.
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'age': 36, 'active': true },
 *   { 'user': 'fred',    'age': 40, 'active': false },
 *   { 'user': 'pebbles', 'age': 1,  'active': true }
 * ];
 *
 * _.find(users, function(o) { return o.age < 40; });
 * // => object for 'barney'
 *
 * // The `_.matches` iteratee shorthand.
 * _.find(users, { 'age': 1, 'active': true });
 * // => object for 'pebbles'
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.find(users, ['active', false]);
 * // => object for 'fred'
 *
 * // The `_.property` iteratee shorthand.
 * _.find(users, 'active');
 * // => object for 'barney'
 */
var find = createFind(findIndex);

/**
 * The base implementation of methods like `_.findKey` and `_.findLastKey`,
 * without support for iteratee shorthands, which iterates over `collection`
 * using `eachFunc`.
 *
 * @private
 * @param {Array|Object} collection The collection to inspect.
 * @param {Function} predicate The function invoked per iteration.
 * @param {Function} eachFunc The function to iterate over `collection`.
 * @returns {*} Returns the found element or its key, else `undefined`.
 */
function baseFindKey(collection, predicate, eachFunc) {
  var result;
  eachFunc(collection, function (value, key, collection) {
    if (predicate(value, key, collection)) {
      result = key;
      return false;
    }
  });
  return result;
}

/**
 * This method is like `_.find` except that it returns the key of the first
 * element `predicate` returns truthy for instead of the element itself.
 *
 * @static
 * @memberOf _
 * @since 1.1.0
 * @category Object
 * @param {Object} object The object to inspect.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @returns {string|undefined} Returns the key of the matched element,
 *  else `undefined`.
 * @example
 *
 * var users = {
 *   'barney':  { 'age': 36, 'active': true },
 *   'fred':    { 'age': 40, 'active': false },
 *   'pebbles': { 'age': 1,  'active': true }
 * };
 *
 * _.findKey(users, function(o) { return o.age < 40; });
 * // => 'barney' (iteration order is not guaranteed)
 *
 * // The `_.matches` iteratee shorthand.
 * _.findKey(users, { 'age': 1, 'active': true });
 * // => 'pebbles'
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.findKey(users, ['active', false]);
 * // => 'fred'
 *
 * // The `_.property` iteratee shorthand.
 * _.findKey(users, 'active');
 * // => 'barney'
 */
function findKey(object, predicate) {
  return baseFindKey(object, baseIteratee(predicate, 3), baseForOwn);
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$7 = Math.max;
var nativeMin$4 = Math.min;

/**
 * This method is like `_.findIndex` except that it iterates over elements
 * of `collection` from right to left.
 *
 * @static
 * @memberOf _
 * @since 2.0.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @param {number} [fromIndex=array.length-1] The index to search from.
 * @returns {number} Returns the index of the found element, else `-1`.
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'active': true },
 *   { 'user': 'fred',    'active': false },
 *   { 'user': 'pebbles', 'active': false }
 * ];
 *
 * _.findLastIndex(users, function(o) { return o.user == 'pebbles'; });
 * // => 2
 *
 * // The `_.matches` iteratee shorthand.
 * _.findLastIndex(users, { 'user': 'barney', 'active': true });
 * // => 0
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.findLastIndex(users, ['active', false]);
 * // => 2
 *
 * // The `_.property` iteratee shorthand.
 * _.findLastIndex(users, 'active');
 * // => 0
 */
function findLastIndex(array, predicate, fromIndex) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return -1;
  }
  var index = length - 1;
  if (fromIndex !== undefined) {
    index = toInteger(fromIndex);
    index = fromIndex < 0 ? nativeMax$7(length + index, 0) : nativeMin$4(index, length - 1);
  }
  return baseFindIndex(array, baseIteratee(predicate, 3), index, true);
}

/**
 * This method is like `_.find` except that it iterates over elements of
 * `collection` from right to left.
 *
 * @static
 * @memberOf _
 * @since 2.0.0
 * @category Collection
 * @param {Array|Object} collection The collection to inspect.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @param {number} [fromIndex=collection.length-1] The index to search from.
 * @returns {*} Returns the matched element, else `undefined`.
 * @example
 *
 * _.findLast([1, 2, 3, 4], function(n) {
 *   return n % 2 == 1;
 * });
 * // => 3
 */
var findLast = createFind(findLastIndex);

/**
 * This method is like `_.findKey` except that it iterates over elements of
 * a collection in the opposite order.
 *
 * @static
 * @memberOf _
 * @since 2.0.0
 * @category Object
 * @param {Object} object The object to inspect.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @returns {string|undefined} Returns the key of the matched element,
 *  else `undefined`.
 * @example
 *
 * var users = {
 *   'barney':  { 'age': 36, 'active': true },
 *   'fred':    { 'age': 40, 'active': false },
 *   'pebbles': { 'age': 1,  'active': true }
 * };
 *
 * _.findLastKey(users, function(o) { return o.age < 40; });
 * // => returns 'pebbles' assuming `_.findKey` returns 'barney'
 *
 * // The `_.matches` iteratee shorthand.
 * _.findLastKey(users, { 'age': 36, 'active': true });
 * // => 'barney'
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.findLastKey(users, ['active', false]);
 * // => 'fred'
 *
 * // The `_.property` iteratee shorthand.
 * _.findLastKey(users, 'active');
 * // => 'pebbles'
 */
function findLastKey(object, predicate) {
  return baseFindKey(object, baseIteratee(predicate, 3), baseForOwnRight);
}

/**
 * Gets the first element of `array`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @alias first
 * @category Array
 * @param {Array} array The array to query.
 * @returns {*} Returns the first element of `array`.
 * @example
 *
 * _.head([1, 2, 3]);
 * // => 1
 *
 * _.head([]);
 * // => undefined
 */
function head(array) {
  return array && array.length ? array[0] : undefined;
}

/**
 * The base implementation of `_.map` without support for iteratee shorthands.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {Array} Returns the new mapped array.
 */
function baseMap(collection, iteratee) {
  var index = -1,
      result = isArrayLike(collection) ? Array(collection.length) : [];

  baseEach(collection, function (value, key, collection) {
    result[++index] = iteratee(value, key, collection);
  });
  return result;
}

/**
 * Creates an array of values by running each element in `collection` thru
 * `iteratee`. The iteratee is invoked with three arguments:
 * (value, index|key, collection).
 *
 * Many lodash methods are guarded to work as iteratees for methods like
 * `_.every`, `_.filter`, `_.map`, `_.mapValues`, `_.reject`, and `_.some`.
 *
 * The guarded methods are:
 * `ary`, `chunk`, `curry`, `curryRight`, `drop`, `dropRight`, `every`,
 * `fill`, `invert`, `parseInt`, `random`, `range`, `rangeRight`, `repeat`,
 * `sampleSize`, `slice`, `some`, `sortBy`, `split`, `take`, `takeRight`,
 * `template`, `trim`, `trimEnd`, `trimStart`, and `words`
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the new mapped array.
 * @example
 *
 * function square(n) {
 *   return n * n;
 * }
 *
 * _.map([4, 8], square);
 * // => [16, 64]
 *
 * _.map({ 'a': 4, 'b': 8 }, square);
 * // => [16, 64] (iteration order is not guaranteed)
 *
 * var users = [
 *   { 'user': 'barney' },
 *   { 'user': 'fred' }
 * ];
 *
 * // The `_.property` iteratee shorthand.
 * _.map(users, 'user');
 * // => ['barney', 'fred']
 */
function map(collection, iteratee) {
  var func = isArray(collection) ? arrayMap : baseMap;
  return func(collection, baseIteratee(iteratee, 3));
}

/**
 * Creates a flattened array of values by running each element in `collection`
 * thru `iteratee` and flattening the mapped results. The iteratee is invoked
 * with three arguments: (value, index|key, collection).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the new flattened array.
 * @example
 *
 * function duplicate(n) {
 *   return [n, n];
 * }
 *
 * _.flatMap([1, 2], duplicate);
 * // => [1, 1, 2, 2]
 */
function flatMap(collection, iteratee) {
  return baseFlatten(map(collection, iteratee), 1);
}

/** Used as references for various `Number` constants. */
var INFINITY$3 = 1 / 0;

/**
 * This method is like `_.flatMap` except that it recursively flattens the
 * mapped results.
 *
 * @static
 * @memberOf _
 * @since 4.7.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the new flattened array.
 * @example
 *
 * function duplicate(n) {
 *   return [[[n, n]]];
 * }
 *
 * _.flatMapDeep([1, 2], duplicate);
 * // => [1, 1, 2, 2]
 */
function flatMapDeep(collection, iteratee) {
  return baseFlatten(map(collection, iteratee), INFINITY$3);
}

/**
 * This method is like `_.flatMap` except that it recursively flattens the
 * mapped results up to `depth` times.
 *
 * @static
 * @memberOf _
 * @since 4.7.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @param {number} [depth=1] The maximum recursion depth.
 * @returns {Array} Returns the new flattened array.
 * @example
 *
 * function duplicate(n) {
 *   return [[[n, n]]];
 * }
 *
 * _.flatMapDepth([1, 2], duplicate, 2);
 * // => [[1, 1], [2, 2]]
 */
function flatMapDepth(collection, iteratee, depth) {
  depth = depth === undefined ? 1 : toInteger(depth);
  return baseFlatten(map(collection, iteratee), depth);
}

/** Used as references for various `Number` constants. */
var INFINITY$4 = 1 / 0;

/**
 * Recursively flattens `array`.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to flatten.
 * @returns {Array} Returns the new flattened array.
 * @example
 *
 * _.flattenDeep([1, [2, [3, [4]], 5]]);
 * // => [1, 2, 3, 4, 5]
 */
function flattenDeep(array) {
  var length = array == null ? 0 : array.length;
  return length ? baseFlatten(array, INFINITY$4) : [];
}

/**
 * Recursively flatten `array` up to `depth` times.
 *
 * @static
 * @memberOf _
 * @since 4.4.0
 * @category Array
 * @param {Array} array The array to flatten.
 * @param {number} [depth=1] The maximum recursion depth.
 * @returns {Array} Returns the new flattened array.
 * @example
 *
 * var array = [1, [2, [3, [4]], 5]];
 *
 * _.flattenDepth(array, 1);
 * // => [1, 2, [3, [4]], 5]
 *
 * _.flattenDepth(array, 2);
 * // => [1, 2, 3, [4], 5]
 */
function flattenDepth(array, depth) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return [];
  }
  depth = depth === undefined ? 1 : toInteger(depth);
  return baseFlatten(array, depth);
}

/** Used to compose bitmasks for function metadata. */
var WRAP_FLIP_FLAG$2 = 512;

/**
 * Creates a function that invokes `func` with arguments reversed.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Function
 * @param {Function} func The function to flip arguments for.
 * @returns {Function} Returns the new flipped function.
 * @example
 *
 * var flipped = _.flip(function() {
 *   return _.toArray(arguments);
 * });
 *
 * flipped('a', 'b', 'c', 'd');
 * // => ['d', 'c', 'b', 'a']
 */
function flip(func) {
  return createWrap(func, WRAP_FLIP_FLAG$2);
}

/**
 * Computes `number` rounded down to `precision`.
 *
 * @static
 * @memberOf _
 * @since 3.10.0
 * @category Math
 * @param {number} number The number to round down.
 * @param {number} [precision=0] The precision to round down to.
 * @returns {number} Returns the rounded down number.
 * @example
 *
 * _.floor(4.006);
 * // => 4
 *
 * _.floor(0.046, 2);
 * // => 0.04
 *
 * _.floor(4060, -2);
 * // => 4000
 */
var floor = createRound('floor');

/** Error message constants. */
var FUNC_ERROR_TEXT$7 = 'Expected a function';

/** Used to compose bitmasks for function metadata. */
var WRAP_CURRY_FLAG$6 = 8;
var WRAP_PARTIAL_FLAG$5 = 32;
var WRAP_ARY_FLAG$4 = 128;
var WRAP_REARG_FLAG$2 = 256;

/**
 * Creates a `_.flow` or `_.flowRight` function.
 *
 * @private
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new flow function.
 */
function createFlow(fromRight) {
  return flatRest(function (funcs) {
    var length = funcs.length,
        index = length,
        prereq = LodashWrapper.prototype.thru;

    if (fromRight) {
      funcs.reverse();
    }
    while (index--) {
      var func = funcs[index];
      if (typeof func != 'function') {
        throw new TypeError(FUNC_ERROR_TEXT$7);
      }
      if (prereq && !wrapper && getFuncName(func) == 'wrapper') {
        var wrapper = new LodashWrapper([], true);
      }
    }
    index = wrapper ? index : length;
    while (++index < length) {
      func = funcs[index];

      var funcName = getFuncName(func),
          data = funcName == 'wrapper' ? getData(func) : undefined;

      if (data && isLaziable(data[0]) && data[1] == (WRAP_ARY_FLAG$4 | WRAP_CURRY_FLAG$6 | WRAP_PARTIAL_FLAG$5 | WRAP_REARG_FLAG$2) && !data[4].length && data[9] == 1) {
        wrapper = wrapper[getFuncName(data[0])].apply(wrapper, data[3]);
      } else {
        wrapper = func.length == 1 && isLaziable(func) ? wrapper[funcName]() : wrapper.thru(func);
      }
    }
    return function () {
      var args = arguments,
          value = args[0];

      if (wrapper && args.length == 1 && isArray(value)) {
        return wrapper.plant(value).value();
      }
      var index = 0,
          result = length ? funcs[index].apply(this, args) : value;

      while (++index < length) {
        result = funcs[index].call(this, result);
      }
      return result;
    };
  });
}

/**
 * Creates a function that returns the result of invoking the given functions
 * with the `this` binding of the created function, where each successive
 * invocation is supplied the return value of the previous.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Util
 * @param {...(Function|Function[])} [funcs] The functions to invoke.
 * @returns {Function} Returns the new composite function.
 * @see _.flowRight
 * @example
 *
 * function square(n) {
 *   return n * n;
 * }
 *
 * var addSquare = _.flow([_.add, square]);
 * addSquare(1, 2);
 * // => 9
 */
var flow = createFlow();

/**
 * This method is like `_.flow` except that it creates a function that
 * invokes the given functions from right to left.
 *
 * @static
 * @since 3.0.0
 * @memberOf _
 * @category Util
 * @param {...(Function|Function[])} [funcs] The functions to invoke.
 * @returns {Function} Returns the new composite function.
 * @see _.flow
 * @example
 *
 * function square(n) {
 *   return n * n;
 * }
 *
 * var addSquare = _.flowRight([square, _.add]);
 * addSquare(1, 2);
 * // => 9
 */
var flowRight = createFlow(true);

/**
 * Iterates over own and inherited enumerable string keyed properties of an
 * object and invokes `iteratee` for each property. The iteratee is invoked
 * with three arguments: (value, key, object). Iteratee functions may exit
 * iteration early by explicitly returning `false`.
 *
 * @static
 * @memberOf _
 * @since 0.3.0
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Object} Returns `object`.
 * @see _.forInRight
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.forIn(new Foo, function(value, key) {
 *   console.log(key);
 * });
 * // => Logs 'a', 'b', then 'c' (iteration order is not guaranteed).
 */
function forIn(object, iteratee) {
  return object == null ? object : baseFor(object, castFunction(iteratee), keysIn$1);
}

/**
 * This method is like `_.forIn` except that it iterates over properties of
 * `object` in the opposite order.
 *
 * @static
 * @memberOf _
 * @since 2.0.0
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Object} Returns `object`.
 * @see _.forIn
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.forInRight(new Foo, function(value, key) {
 *   console.log(key);
 * });
 * // => Logs 'c', 'b', then 'a' assuming `_.forIn` logs 'a', 'b', then 'c'.
 */
function forInRight(object, iteratee) {
  return object == null ? object : baseForRight(object, castFunction(iteratee), keysIn$1);
}

/**
 * Iterates over own enumerable string keyed properties of an object and
 * invokes `iteratee` for each property. The iteratee is invoked with three
 * arguments: (value, key, object). Iteratee functions may exit iteration
 * early by explicitly returning `false`.
 *
 * @static
 * @memberOf _
 * @since 0.3.0
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Object} Returns `object`.
 * @see _.forOwnRight
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.forOwn(new Foo, function(value, key) {
 *   console.log(key);
 * });
 * // => Logs 'a' then 'b' (iteration order is not guaranteed).
 */
function forOwn(object, iteratee) {
  return object && baseForOwn(object, castFunction(iteratee));
}

/**
 * This method is like `_.forOwn` except that it iterates over properties of
 * `object` in the opposite order.
 *
 * @static
 * @memberOf _
 * @since 2.0.0
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Object} Returns `object`.
 * @see _.forOwn
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.forOwnRight(new Foo, function(value, key) {
 *   console.log(key);
 * });
 * // => Logs 'b' then 'a' assuming `_.forOwn` logs 'a' then 'b'.
 */
function forOwnRight(object, iteratee) {
  return object && baseForOwnRight(object, castFunction(iteratee));
}

/**
 * The inverse of `_.toPairs`; this method returns an object composed
 * from key-value `pairs`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} pairs The key-value pairs.
 * @returns {Object} Returns the new object.
 * @example
 *
 * _.fromPairs([['a', 1], ['b', 2]]);
 * // => { 'a': 1, 'b': 2 }
 */
function fromPairs(pairs) {
  var index = -1,
      length = pairs == null ? 0 : pairs.length,
      result = {};

  while (++index < length) {
    var pair = pairs[index];
    result[pair[0]] = pair[1];
  }
  return result;
}

/**
 * The base implementation of `_.functions` which creates an array of
 * `object` function property names filtered from `props`.
 *
 * @private
 * @param {Object} object The object to inspect.
 * @param {Array} props The property names to filter.
 * @returns {Array} Returns the function names.
 */
function baseFunctions(object, props) {
  return arrayFilter(props, function (key) {
    return isFunction(object[key]);
  });
}

/**
 * Creates an array of function property names from own enumerable properties
 * of `object`.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The object to inspect.
 * @returns {Array} Returns the function names.
 * @see _.functionsIn
 * @example
 *
 * function Foo() {
 *   this.a = _.constant('a');
 *   this.b = _.constant('b');
 * }
 *
 * Foo.prototype.c = _.constant('c');
 *
 * _.functions(new Foo);
 * // => ['a', 'b']
 */
function functions(object) {
  return object == null ? [] : baseFunctions(object, keys(object));
}

/**
 * Creates an array of function property names from own and inherited
 * enumerable properties of `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The object to inspect.
 * @returns {Array} Returns the function names.
 * @see _.functions
 * @example
 *
 * function Foo() {
 *   this.a = _.constant('a');
 *   this.b = _.constant('b');
 * }
 *
 * Foo.prototype.c = _.constant('c');
 *
 * _.functionsIn(new Foo);
 * // => ['a', 'b', 'c']
 */
function functionsIn(object) {
  return object == null ? [] : baseFunctions(object, keysIn$1(object));
}

/** Used for built-in method references. */
var objectProto$21 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$18 = objectProto$21.hasOwnProperty;

/**
 * Creates an object composed of keys generated from the results of running
 * each element of `collection` thru `iteratee`. The order of grouped values
 * is determined by the order they occur in `collection`. The corresponding
 * value of each key is an array of elements responsible for generating the
 * key. The iteratee is invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
 * @returns {Object} Returns the composed aggregate object.
 * @example
 *
 * _.groupBy([6.1, 4.2, 6.3], Math.floor);
 * // => { '4': [4.2], '6': [6.1, 6.3] }
 *
 * // The `_.property` iteratee shorthand.
 * _.groupBy(['one', 'two', 'three'], 'length');
 * // => { '3': ['one', 'two'], '5': ['three'] }
 */
var groupBy = createAggregator(function (result, value, key) {
  if (hasOwnProperty$18.call(result, key)) {
    result[key].push(value);
  } else {
    baseAssignValue(result, key, [value]);
  }
});

/**
 * The base implementation of `_.gt` which doesn't coerce arguments.
 *
 * @private
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if `value` is greater than `other`,
 *  else `false`.
 */
function baseGt(value, other) {
  return value > other;
}

/**
 * Creates a function that performs a relational operation on two values.
 *
 * @private
 * @param {Function} operator The function to perform the operation.
 * @returns {Function} Returns the new relational operation function.
 */
function createRelationalOperation(operator) {
  return function (value, other) {
    if (!(typeof value == 'string' && typeof other == 'string')) {
      value = toNumber(value);
      other = toNumber(other);
    }
    return operator(value, other);
  };
}

/**
 * Checks if `value` is greater than `other`.
 *
 * @static
 * @memberOf _
 * @since 3.9.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if `value` is greater than `other`,
 *  else `false`.
 * @see _.lt
 * @example
 *
 * _.gt(3, 1);
 * // => true
 *
 * _.gt(3, 3);
 * // => false
 *
 * _.gt(1, 3);
 * // => false
 */
var gt = createRelationalOperation(baseGt);

/**
 * Checks if `value` is greater than or equal to `other`.
 *
 * @static
 * @memberOf _
 * @since 3.9.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if `value` is greater than or equal to
 *  `other`, else `false`.
 * @see _.lte
 * @example
 *
 * _.gte(3, 1);
 * // => true
 *
 * _.gte(3, 3);
 * // => true
 *
 * _.gte(1, 3);
 * // => false
 */
var gte = createRelationalOperation(function (value, other) {
  return value >= other;
});

/** Used for built-in method references. */
var objectProto$22 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$19 = objectProto$22.hasOwnProperty;

/**
 * The base implementation of `_.has` without support for deep paths.
 *
 * @private
 * @param {Object} [object] The object to query.
 * @param {Array|string} key The key to check.
 * @returns {boolean} Returns `true` if `key` exists, else `false`.
 */
function baseHas(object, key) {
  return object != null && hasOwnProperty$19.call(object, key);
}

/**
 * Checks if `path` is a direct property of `object`.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The object to query.
 * @param {Array|string} path The path to check.
 * @returns {boolean} Returns `true` if `path` exists, else `false`.
 * @example
 *
 * var object = { 'a': { 'b': 2 } };
 * var other = _.create({ 'a': _.create({ 'b': 2 }) });
 *
 * _.has(object, 'a');
 * // => true
 *
 * _.has(object, 'a.b');
 * // => true
 *
 * _.has(object, ['a', 'b']);
 * // => true
 *
 * _.has(other, 'a');
 * // => false
 */
function has(object, path) {
  return object != null && hasPath(object, path, baseHas);
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$8 = Math.max;
var nativeMin$5 = Math.min;

/**
 * The base implementation of `_.inRange` which doesn't coerce arguments.
 *
 * @private
 * @param {number} number The number to check.
 * @param {number} start The start of the range.
 * @param {number} end The end of the range.
 * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
 */
function baseInRange(number, start, end) {
  return number >= nativeMin$5(start, end) && number < nativeMax$8(start, end);
}

/**
 * Checks if `n` is between `start` and up to, but not including, `end`. If
 * `end` is not specified, it's set to `start` with `start` then set to `0`.
 * If `start` is greater than `end` the params are swapped to support
 * negative ranges.
 *
 * @static
 * @memberOf _
 * @since 3.3.0
 * @category Number
 * @param {number} number The number to check.
 * @param {number} [start=0] The start of the range.
 * @param {number} end The end of the range.
 * @returns {boolean} Returns `true` if `number` is in the range, else `false`.
 * @see _.range, _.rangeRight
 * @example
 *
 * _.inRange(3, 2, 4);
 * // => true
 *
 * _.inRange(4, 8);
 * // => true
 *
 * _.inRange(4, 2);
 * // => false
 *
 * _.inRange(2, 2);
 * // => false
 *
 * _.inRange(1.2, 2);
 * // => true
 *
 * _.inRange(5.2, 4);
 * // => false
 *
 * _.inRange(-3, -2, -6);
 * // => true
 */
function inRange(number, start, end) {
  start = toFinite(start);
  if (end === undefined) {
    end = start;
    start = 0;
  } else {
    end = toFinite(end);
  }
  number = toNumber(number);
  return baseInRange(number, start, end);
}

/** `Object#toString` result references. */
var stringTag$4 = '[object String]';

/**
 * Checks if `value` is classified as a `String` primitive or object.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a string, else `false`.
 * @example
 *
 * _.isString('abc');
 * // => true
 *
 * _.isString(1);
 * // => false
 */
function isString(value) {
  return typeof value == 'string' || !isArray(value) && isObjectLike(value) && baseGetTag(value) == stringTag$4;
}

/**
 * The base implementation of `_.values` and `_.valuesIn` which creates an
 * array of `object` property values corresponding to the property names
 * of `props`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array} props The property names to get values for.
 * @returns {Object} Returns the array of property values.
 */
function baseValues(object, props) {
  return arrayMap(props, function (key) {
    return object[key];
  });
}

/**
 * Creates an array of the own enumerable string keyed property values of `object`.
 *
 * **Note:** Non-object values are coerced to objects.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property values.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.values(new Foo);
 * // => [1, 2] (iteration order is not guaranteed)
 *
 * _.values('hi');
 * // => ['h', 'i']
 */
function values(object) {
  return object == null ? [] : baseValues(object, keys(object));
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$9 = Math.max;

/**
 * Checks if `value` is in `collection`. If `collection` is a string, it's
 * checked for a substring of `value`, otherwise
 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * is used for equality comparisons. If `fromIndex` is negative, it's used as
 * the offset from the end of `collection`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object|string} collection The collection to inspect.
 * @param {*} value The value to search for.
 * @param {number} [fromIndex=0] The index to search from.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
 * @returns {boolean} Returns `true` if `value` is found, else `false`.
 * @example
 *
 * _.includes([1, 2, 3], 1);
 * // => true
 *
 * _.includes([1, 2, 3], 1, 2);
 * // => false
 *
 * _.includes({ 'a': 1, 'b': 2 }, 1);
 * // => true
 *
 * _.includes('abcd', 'bc');
 * // => true
 */
function includes(collection, value, fromIndex, guard) {
  collection = isArrayLike(collection) ? collection : values(collection);
  fromIndex = fromIndex && !guard ? toInteger(fromIndex) : 0;

  var length = collection.length;
  if (fromIndex < 0) {
    fromIndex = nativeMax$9(length + fromIndex, 0);
  }
  return isString(collection) ? fromIndex <= length && collection.indexOf(value, fromIndex) > -1 : !!length && baseIndexOf(collection, value, fromIndex) > -1;
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$10 = Math.max;

/**
 * Gets the index at which the first occurrence of `value` is found in `array`
 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons. If `fromIndex` is negative, it's used as the
 * offset from the end of `array`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {*} value The value to search for.
 * @param {number} [fromIndex=0] The index to search from.
 * @returns {number} Returns the index of the matched value, else `-1`.
 * @example
 *
 * _.indexOf([1, 2, 1, 2], 2);
 * // => 1
 *
 * // Search from the `fromIndex`.
 * _.indexOf([1, 2, 1, 2], 2, 2);
 * // => 3
 */
function indexOf(array, value, fromIndex) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return -1;
  }
  var index = fromIndex == null ? 0 : toInteger(fromIndex);
  if (index < 0) {
    index = nativeMax$10(length + index, 0);
  }
  return baseIndexOf(array, value, index);
}

/**
 * Gets all but the last element of `array`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The array to query.
 * @returns {Array} Returns the slice of `array`.
 * @example
 *
 * _.initial([1, 2, 3]);
 * // => [1, 2]
 */
function initial(array) {
  var length = array == null ? 0 : array.length;
  return length ? baseSlice(array, 0, -1) : [];
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMin$6 = Math.min;

/**
 * The base implementation of methods like `_.intersection`, without support
 * for iteratee shorthands, that accepts an array of arrays to inspect.
 *
 * @private
 * @param {Array} arrays The arrays to inspect.
 * @param {Function} [iteratee] The iteratee invoked per element.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns the new array of shared values.
 */
function baseIntersection(arrays, iteratee, comparator) {
  var includes = comparator ? arrayIncludesWith : arrayIncludes,
      length = arrays[0].length,
      othLength = arrays.length,
      othIndex = othLength,
      caches = Array(othLength),
      maxLength = Infinity,
      result = [];

  while (othIndex--) {
    var array = arrays[othIndex];
    if (othIndex && iteratee) {
      array = arrayMap(array, baseUnary(iteratee));
    }
    maxLength = nativeMin$6(array.length, maxLength);
    caches[othIndex] = !comparator && (iteratee || length >= 120 && array.length >= 120) ? new SetCache(othIndex && array) : undefined;
  }
  array = arrays[0];

  var index = -1,
      seen = caches[0];

  outer: while (++index < length && result.length < maxLength) {
    var value = array[index],
        computed = iteratee ? iteratee(value) : value;

    value = comparator || value !== 0 ? value : 0;
    if (!(seen ? cacheHas(seen, computed) : includes(result, computed, comparator))) {
      othIndex = othLength;
      while (--othIndex) {
        var cache = caches[othIndex];
        if (!(cache ? cacheHas(cache, computed) : includes(arrays[othIndex], computed, comparator))) {
          continue outer;
        }
      }
      if (seen) {
        seen.push(computed);
      }
      result.push(value);
    }
  }
  return result;
}

/**
 * Casts `value` to an empty array if it's not an array like object.
 *
 * @private
 * @param {*} value The value to inspect.
 * @returns {Array|Object} Returns the cast array-like object.
 */
function castArrayLikeObject(value) {
  return isArrayLikeObject(value) ? value : [];
}

/**
 * Creates an array of unique values that are included in all given arrays
 * using [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons. The order and references of result values are
 * determined by the first array.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {...Array} [arrays] The arrays to inspect.
 * @returns {Array} Returns the new array of intersecting values.
 * @example
 *
 * _.intersection([2, 1], [2, 3]);
 * // => [2]
 */
var intersection = baseRest(function (arrays) {
  var mapped = arrayMap(arrays, castArrayLikeObject);
  return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped) : [];
});

/**
 * This method is like `_.intersection` except that it accepts `iteratee`
 * which is invoked for each element of each `arrays` to generate the criterion
 * by which they're compared. The order and references of result values are
 * determined by the first array. The iteratee is invoked with one argument:
 * (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {...Array} [arrays] The arrays to inspect.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {Array} Returns the new array of intersecting values.
 * @example
 *
 * _.intersectionBy([2.1, 1.2], [2.3, 3.4], Math.floor);
 * // => [2.1]
 *
 * // The `_.property` iteratee shorthand.
 * _.intersectionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
 * // => [{ 'x': 1 }]
 */
var intersectionBy = baseRest(function (arrays) {
  var iteratee = last(arrays),
      mapped = arrayMap(arrays, castArrayLikeObject);

  if (iteratee === last(mapped)) {
    iteratee = undefined;
  } else {
    mapped.pop();
  }
  return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped, baseIteratee(iteratee, 2)) : [];
});

/**
 * This method is like `_.intersection` except that it accepts `comparator`
 * which is invoked to compare elements of `arrays`. The order and references
 * of result values are determined by the first array. The comparator is
 * invoked with two arguments: (arrVal, othVal).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {...Array} [arrays] The arrays to inspect.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns the new array of intersecting values.
 * @example
 *
 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
 * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
 *
 * _.intersectionWith(objects, others, _.isEqual);
 * // => [{ 'x': 1, 'y': 2 }]
 */
var intersectionWith = baseRest(function (arrays) {
  var comparator = last(arrays),
      mapped = arrayMap(arrays, castArrayLikeObject);

  comparator = typeof comparator == 'function' ? comparator : undefined;
  if (comparator) {
    mapped.pop();
  }
  return mapped.length && mapped[0] === arrays[0] ? baseIntersection(mapped, undefined, comparator) : [];
});

/**
 * The base implementation of `_.invert` and `_.invertBy` which inverts
 * `object` with values transformed by `iteratee` and set by `setter`.
 *
 * @private
 * @param {Object} object The object to iterate over.
 * @param {Function} setter The function to set `accumulator` values.
 * @param {Function} iteratee The iteratee to transform values.
 * @param {Object} accumulator The initial inverted object.
 * @returns {Function} Returns `accumulator`.
 */
function baseInverter(object, setter, iteratee, accumulator) {
  baseForOwn(object, function (value, key, object) {
    setter(accumulator, iteratee(value), key, object);
  });
  return accumulator;
}

/**
 * Creates a function like `_.invertBy`.
 *
 * @private
 * @param {Function} setter The function to set accumulator values.
 * @param {Function} toIteratee The function to resolve iteratees.
 * @returns {Function} Returns the new inverter function.
 */
function createInverter(setter, toIteratee) {
  return function (object, iteratee) {
    return baseInverter(object, setter, toIteratee(iteratee), {});
  };
}

/**
 * Creates an object composed of the inverted keys and values of `object`.
 * If `object` contains duplicate values, subsequent values overwrite
 * property assignments of previous values.
 *
 * @static
 * @memberOf _
 * @since 0.7.0
 * @category Object
 * @param {Object} object The object to invert.
 * @returns {Object} Returns the new inverted object.
 * @example
 *
 * var object = { 'a': 1, 'b': 2, 'c': 1 };
 *
 * _.invert(object);
 * // => { '1': 'c', '2': 'b' }
 */
var invert = createInverter(function (result, value, key) {
  result[value] = key;
}, constant(identity));

/** Used for built-in method references. */
var objectProto$23 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$20 = objectProto$23.hasOwnProperty;

/**
 * This method is like `_.invert` except that the inverted object is generated
 * from the results of running each element of `object` thru `iteratee`. The
 * corresponding inverted value of each inverted key is an array of keys
 * responsible for generating the inverted value. The iteratee is invoked
 * with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 4.1.0
 * @category Object
 * @param {Object} object The object to invert.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {Object} Returns the new inverted object.
 * @example
 *
 * var object = { 'a': 1, 'b': 2, 'c': 1 };
 *
 * _.invertBy(object);
 * // => { '1': ['a', 'c'], '2': ['b'] }
 *
 * _.invertBy(object, function(value) {
 *   return 'group' + value;
 * });
 * // => { 'group1': ['a', 'c'], 'group2': ['b'] }
 */
var invertBy = createInverter(function (result, value, key) {
  if (hasOwnProperty$20.call(result, value)) {
    result[value].push(key);
  } else {
    result[value] = [key];
  }
}, baseIteratee);

/**
 * Gets the parent value at `path` of `object`.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array} path The path to get the parent value of.
 * @returns {*} Returns the parent value.
 */
function parent(object, path) {
  return path.length < 2 ? object : baseGet(object, baseSlice(path, 0, -1));
}

/**
 * The base implementation of `_.invoke` without support for individual
 * method arguments.
 *
 * @private
 * @param {Object} object The object to query.
 * @param {Array|string} path The path of the method to invoke.
 * @param {Array} args The arguments to invoke the method with.
 * @returns {*} Returns the result of the invoked method.
 */
function baseInvoke(object, path, args) {
  path = castPath(path, object);
  object = parent(object, path);
  var func = object == null ? object : object[toKey(last(path))];
  return func == null ? undefined : apply(func, object, args);
}

/**
 * Invokes the method at `path` of `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The object to query.
 * @param {Array|string} path The path of the method to invoke.
 * @param {...*} [args] The arguments to invoke the method with.
 * @returns {*} Returns the result of the invoked method.
 * @example
 *
 * var object = { 'a': [{ 'b': { 'c': [1, 2, 3, 4] } }] };
 *
 * _.invoke(object, 'a[0].b.c.slice', 1, 3);
 * // => [2, 3]
 */
var invoke = baseRest(baseInvoke);

/**
 * Invokes the method at `path` of each element in `collection`, returning
 * an array of the results of each invoked method. Any additional arguments
 * are provided to each invoked method. If `path` is a function, it's invoked
 * for, and `this` bound to, each element in `collection`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Array|Function|string} path The path of the method to invoke or
 *  the function invoked per iteration.
 * @param {...*} [args] The arguments to invoke each method with.
 * @returns {Array} Returns the array of results.
 * @example
 *
 * _.invokeMap([[5, 1, 7], [3, 2, 1]], 'sort');
 * // => [[1, 5, 7], [1, 2, 3]]
 *
 * _.invokeMap([123, 456], String.prototype.split, '');
 * // => [['1', '2', '3'], ['4', '5', '6']]
 */
var invokeMap = baseRest(function (collection, path, args) {
  var index = -1,
      isFunc = typeof path == 'function',
      result = isArrayLike(collection) ? Array(collection.length) : [];

  baseEach(collection, function (value) {
    result[++index] = isFunc ? apply(path, value, args) : baseInvoke(value, path, args);
  });
  return result;
});

var arrayBufferTag$4 = '[object ArrayBuffer]';

/**
 * The base implementation of `_.isArrayBuffer` without Node.js optimizations.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
 */
function baseIsArrayBuffer(value) {
  return isObjectLike(value) && baseGetTag(value) == arrayBufferTag$4;
}

/* Node.js helper references. */
var nodeIsArrayBuffer = nodeUtil && nodeUtil.isArrayBuffer;

/**
 * Checks if `value` is classified as an `ArrayBuffer` object.
 *
 * @static
 * @memberOf _
 * @since 4.3.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an array buffer, else `false`.
 * @example
 *
 * _.isArrayBuffer(new ArrayBuffer(2));
 * // => true
 *
 * _.isArrayBuffer(new Array(2));
 * // => false
 */
var isArrayBuffer = nodeIsArrayBuffer ? baseUnary(nodeIsArrayBuffer) : baseIsArrayBuffer;

/** `Object#toString` result references. */
var boolTag$4 = '[object Boolean]';

/**
 * Checks if `value` is classified as a boolean primitive or object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a boolean, else `false`.
 * @example
 *
 * _.isBoolean(false);
 * // => true
 *
 * _.isBoolean(null);
 * // => false
 */
function isBoolean(value) {
  return value === true || value === false || isObjectLike(value) && baseGetTag(value) == boolTag$4;
}

/** `Object#toString` result references. */
var dateTag$4 = '[object Date]';

/**
 * The base implementation of `_.isDate` without Node.js optimizations.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
 */
function baseIsDate(value) {
  return isObjectLike(value) && baseGetTag(value) == dateTag$4;
}

/* Node.js helper references. */
var nodeIsDate = nodeUtil && nodeUtil.isDate;

/**
 * Checks if `value` is classified as a `Date` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a date object, else `false`.
 * @example
 *
 * _.isDate(new Date);
 * // => true
 *
 * _.isDate('Mon April 23 2012');
 * // => false
 */
var isDate = nodeIsDate ? baseUnary(nodeIsDate) : baseIsDate;

/**
 * Checks if `value` is likely a DOM element.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
 * @example
 *
 * _.isElement(document.body);
 * // => true
 *
 * _.isElement('<body>');
 * // => false
 */
function isElement(value) {
  return isObjectLike(value) && value.nodeType === 1 && !isPlainObject(value);
}

/** `Object#toString` result references. */
var mapTag$6 = '[object Map]';
var setTag$6 = '[object Set]';

/** Used for built-in method references. */
var objectProto$24 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$21 = objectProto$24.hasOwnProperty;

/**
 * Checks if `value` is an empty object, collection, map, or set.
 *
 * Objects are considered empty if they have no own enumerable string keyed
 * properties.
 *
 * Array-like values such as `arguments` objects, arrays, buffers, strings, or
 * jQuery-like collections are considered empty if they have a `length` of `0`.
 * Similarly, maps and sets are considered empty if they have a `size` of `0`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is empty, else `false`.
 * @example
 *
 * _.isEmpty(null);
 * // => true
 *
 * _.isEmpty(true);
 * // => true
 *
 * _.isEmpty(1);
 * // => true
 *
 * _.isEmpty([1, 2, 3]);
 * // => false
 *
 * _.isEmpty({ 'a': 1 });
 * // => false
 */
function isEmpty(value) {
  if (value == null) {
    return true;
  }
  if (isArrayLike(value) && (isArray(value) || typeof value == 'string' || typeof value.splice == 'function' || isBuffer(value) || isTypedArray(value) || isArguments(value))) {
    return !value.length;
  }
  var tag = getTag$1(value);
  if (tag == mapTag$6 || tag == setTag$6) {
    return !value.size;
  }
  if (isPrototype(value)) {
    return !baseKeys(value).length;
  }
  for (var key in value) {
    if (hasOwnProperty$21.call(value, key)) {
      return false;
    }
  }
  return true;
}

/**
 * Performs a deep comparison between two values to determine if they are
 * equivalent.
 *
 * **Note:** This method supports comparing arrays, array buffers, booleans,
 * date objects, error objects, maps, numbers, `Object` objects, regexes,
 * sets, strings, symbols, and typed arrays. `Object` objects are compared
 * by their own, not inherited, enumerable properties. Functions and DOM
 * nodes are compared by strict equality, i.e. `===`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 * @example
 *
 * var object = { 'a': 1 };
 * var other = { 'a': 1 };
 *
 * _.isEqual(object, other);
 * // => true
 *
 * object === other;
 * // => false
 */
function isEqual(value, other) {
  return baseIsEqual(value, other);
}

/**
 * This method is like `_.isEqual` except that it accepts `customizer` which
 * is invoked to compare values. If `customizer` returns `undefined`, comparisons
 * are handled by the method instead. The `customizer` is invoked with up to
 * six arguments: (objValue, othValue [, index|key, object, other, stack]).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @param {Function} [customizer] The function to customize comparisons.
 * @returns {boolean} Returns `true` if the values are equivalent, else `false`.
 * @example
 *
 * function isGreeting(value) {
 *   return /^h(?:i|ello)$/.test(value);
 * }
 *
 * function customizer(objValue, othValue) {
 *   if (isGreeting(objValue) && isGreeting(othValue)) {
 *     return true;
 *   }
 * }
 *
 * var array = ['hello', 'goodbye'];
 * var other = ['hi', 'goodbye'];
 *
 * _.isEqualWith(array, other, customizer);
 * // => true
 */
function isEqualWith(value, other, customizer) {
  customizer = typeof customizer == 'function' ? customizer : undefined;
  var result = customizer ? customizer(value, other) : undefined;
  return result === undefined ? baseIsEqual(value, other, undefined, customizer) : !!result;
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeIsFinite = root.isFinite;

/**
 * Checks if `value` is a finite primitive number.
 *
 * **Note:** This method is based on
 * [`Number.isFinite`](https://mdn.io/Number/isFinite).
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a finite number, else `false`.
 * @example
 *
 * _.isFinite(3);
 * // => true
 *
 * _.isFinite(Number.MIN_VALUE);
 * // => true
 *
 * _.isFinite(Infinity);
 * // => false
 *
 * _.isFinite('3');
 * // => false
 */
function isFinite(value) {
  return typeof value == 'number' && nativeIsFinite(value);
}

/**
 * Checks if `value` is an integer.
 *
 * **Note:** This method is based on
 * [`Number.isInteger`](https://mdn.io/Number/isInteger).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is an integer, else `false`.
 * @example
 *
 * _.isInteger(3);
 * // => true
 *
 * _.isInteger(Number.MIN_VALUE);
 * // => false
 *
 * _.isInteger(Infinity);
 * // => false
 *
 * _.isInteger('3');
 * // => false
 */
function isInteger(value) {
  return typeof value == 'number' && value == toInteger(value);
}

/** `Object#toString` result references. */
var mapTag$7 = '[object Map]';

/**
 * The base implementation of `_.isMap` without Node.js optimizations.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a map, else `false`.
 */
function baseIsMap(value) {
  return isObjectLike(value) && getTag$1(value) == mapTag$7;
}

/* Node.js helper references. */
var nodeIsMap = nodeUtil && nodeUtil.isMap;

/**
 * Checks if `value` is classified as a `Map` object.
 *
 * @static
 * @memberOf _
 * @since 4.3.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a map, else `false`.
 * @example
 *
 * _.isMap(new Map);
 * // => true
 *
 * _.isMap(new WeakMap);
 * // => false
 */
var isMap = nodeIsMap ? baseUnary(nodeIsMap) : baseIsMap;

/**
 * Performs a partial deep comparison between `object` and `source` to
 * determine if `object` contains equivalent property values.
 *
 * **Note:** This method is equivalent to `_.matches` when `source` is
 * partially applied.
 *
 * Partial comparisons will match empty array and empty object `source`
 * values against any array or object value, respectively. See `_.isEqual`
 * for a list of supported value comparisons.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Lang
 * @param {Object} object The object to inspect.
 * @param {Object} source The object of property values to match.
 * @returns {boolean} Returns `true` if `object` is a match, else `false`.
 * @example
 *
 * var object = { 'a': 1, 'b': 2 };
 *
 * _.isMatch(object, { 'b': 2 });
 * // => true
 *
 * _.isMatch(object, { 'b': 1 });
 * // => false
 */
function isMatch(object, source) {
  return object === source || baseIsMatch(object, source, getMatchData(source));
}

/**
 * This method is like `_.isMatch` except that it accepts `customizer` which
 * is invoked to compare values. If `customizer` returns `undefined`, comparisons
 * are handled by the method instead. The `customizer` is invoked with five
 * arguments: (objValue, srcValue, index|key, object, source).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {Object} object The object to inspect.
 * @param {Object} source The object of property values to match.
 * @param {Function} [customizer] The function to customize comparisons.
 * @returns {boolean} Returns `true` if `object` is a match, else `false`.
 * @example
 *
 * function isGreeting(value) {
 *   return /^h(?:i|ello)$/.test(value);
 * }
 *
 * function customizer(objValue, srcValue) {
 *   if (isGreeting(objValue) && isGreeting(srcValue)) {
 *     return true;
 *   }
 * }
 *
 * var object = { 'greeting': 'hello' };
 * var source = { 'greeting': 'hi' };
 *
 * _.isMatchWith(object, source, customizer);
 * // => true
 */
function isMatchWith(object, source, customizer) {
  customizer = typeof customizer == 'function' ? customizer : undefined;
  return baseIsMatch(object, source, getMatchData(source), customizer);
}

/** `Object#toString` result references. */
var numberTag$4 = '[object Number]';

/**
 * Checks if `value` is classified as a `Number` primitive or object.
 *
 * **Note:** To exclude `Infinity`, `-Infinity`, and `NaN`, which are
 * classified as numbers, use the `_.isFinite` method.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a number, else `false`.
 * @example
 *
 * _.isNumber(3);
 * // => true
 *
 * _.isNumber(Number.MIN_VALUE);
 * // => true
 *
 * _.isNumber(Infinity);
 * // => true
 *
 * _.isNumber('3');
 * // => false
 */
function isNumber(value) {
  return typeof value == 'number' || isObjectLike(value) && baseGetTag(value) == numberTag$4;
}

/**
 * Checks if `value` is `NaN`.
 *
 * **Note:** This method is based on
 * [`Number.isNaN`](https://mdn.io/Number/isNaN) and is not the same as
 * global [`isNaN`](https://mdn.io/isNaN) which returns `true` for
 * `undefined` and other non-number values.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is `NaN`, else `false`.
 * @example
 *
 * _.isNaN(NaN);
 * // => true
 *
 * _.isNaN(new Number(NaN));
 * // => true
 *
 * isNaN(undefined);
 * // => true
 *
 * _.isNaN(undefined);
 * // => false
 */
function isNaN(value) {
  // An `NaN` primitive is the only value that is not equal to itself.
  // Perform the `toStringTag` check first to avoid errors with some
  // ActiveX objects in IE.
  return isNumber(value) && value != +value;
}

/**
 * Checks if `func` is capable of being masked.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `func` is maskable, else `false`.
 */
var isMaskable = coreJsData ? isFunction : stubFalse;

/** Error message constants. */
var CORE_ERROR_TEXT = 'Unsupported core-js use. Try https://npms.io/search?q=ponyfill.';

/**
 * Checks if `value` is a pristine native function.
 *
 * **Note:** This method can't reliably detect native functions in the presence
 * of the core-js package because core-js circumvents this kind of detection.
 * Despite multiple requests, the core-js maintainer has made it clear: any
 * attempt to fix the detection will be obstructed. As a result, we're left
 * with little choice but to throw an error. Unfortunately, this also affects
 * packages, like [babel-polyfill](https://www.npmjs.com/package/babel-polyfill),
 * which rely on core-js.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a native function,
 *  else `false`.
 * @example
 *
 * _.isNative(Array.prototype.push);
 * // => true
 *
 * _.isNative(_);
 * // => false
 */
function isNative(value) {
  if (isMaskable(value)) {
    throw new Error(CORE_ERROR_TEXT);
  }
  return baseIsNative(value);
}

/**
 * Checks if `value` is `null` or `undefined`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is nullish, else `false`.
 * @example
 *
 * _.isNil(null);
 * // => true
 *
 * _.isNil(void 0);
 * // => true
 *
 * _.isNil(NaN);
 * // => false
 */
function isNil(value) {
  return value == null;
}

/**
 * Checks if `value` is `null`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is `null`, else `false`.
 * @example
 *
 * _.isNull(null);
 * // => true
 *
 * _.isNull(void 0);
 * // => false
 */
function isNull(value) {
  return value === null;
}

/** `Object#toString` result references. */
var regexpTag$4 = '[object RegExp]';

/**
 * The base implementation of `_.isRegExp` without Node.js optimizations.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
 */
function baseIsRegExp(value) {
  return isObjectLike(value) && baseGetTag(value) == regexpTag$4;
}

/* Node.js helper references. */
var nodeIsRegExp = nodeUtil && nodeUtil.isRegExp;

/**
 * Checks if `value` is classified as a `RegExp` object.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a regexp, else `false`.
 * @example
 *
 * _.isRegExp(/abc/);
 * // => true
 *
 * _.isRegExp('/abc/');
 * // => false
 */
var isRegExp = nodeIsRegExp ? baseUnary(nodeIsRegExp) : baseIsRegExp;

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER$2 = 9007199254740991;

/**
 * Checks if `value` is a safe integer. An integer is safe if it's an IEEE-754
 * double precision number which isn't the result of a rounded unsafe integer.
 *
 * **Note:** This method is based on
 * [`Number.isSafeInteger`](https://mdn.io/Number/isSafeInteger).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a safe integer, else `false`.
 * @example
 *
 * _.isSafeInteger(3);
 * // => true
 *
 * _.isSafeInteger(Number.MIN_VALUE);
 * // => false
 *
 * _.isSafeInteger(Infinity);
 * // => false
 *
 * _.isSafeInteger('3');
 * // => false
 */
function isSafeInteger(value) {
  return isInteger(value) && value >= -MAX_SAFE_INTEGER$2 && value <= MAX_SAFE_INTEGER$2;
}

/** `Object#toString` result references. */
var setTag$7 = '[object Set]';

/**
 * The base implementation of `_.isSet` without Node.js optimizations.
 *
 * @private
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a set, else `false`.
 */
function baseIsSet(value) {
  return isObjectLike(value) && getTag$1(value) == setTag$7;
}

/* Node.js helper references. */
var nodeIsSet = nodeUtil && nodeUtil.isSet;

/**
 * Checks if `value` is classified as a `Set` object.
 *
 * @static
 * @memberOf _
 * @since 4.3.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a set, else `false`.
 * @example
 *
 * _.isSet(new Set);
 * // => true
 *
 * _.isSet(new WeakSet);
 * // => false
 */
var isSet = nodeIsSet ? baseUnary(nodeIsSet) : baseIsSet;

/**
 * Checks if `value` is `undefined`.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is `undefined`, else `false`.
 * @example
 *
 * _.isUndefined(void 0);
 * // => true
 *
 * _.isUndefined(null);
 * // => false
 */
function isUndefined(value) {
  return value === undefined;
}

/** `Object#toString` result references. */
var weakMapTag$3 = '[object WeakMap]';

/**
 * Checks if `value` is classified as a `WeakMap` object.
 *
 * @static
 * @memberOf _
 * @since 4.3.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a weak map, else `false`.
 * @example
 *
 * _.isWeakMap(new WeakMap);
 * // => true
 *
 * _.isWeakMap(new Map);
 * // => false
 */
function isWeakMap(value) {
  return isObjectLike(value) && getTag$1(value) == weakMapTag$3;
}

/** `Object#toString` result references. */
var weakSetTag = '[object WeakSet]';

/**
 * Checks if `value` is classified as a `WeakSet` object.
 *
 * @static
 * @memberOf _
 * @since 4.3.0
 * @category Lang
 * @param {*} value The value to check.
 * @returns {boolean} Returns `true` if `value` is a weak set, else `false`.
 * @example
 *
 * _.isWeakSet(new WeakSet);
 * // => true
 *
 * _.isWeakSet(new Set);
 * // => false
 */
function isWeakSet(value) {
  return isObjectLike(value) && baseGetTag(value) == weakSetTag;
}

/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG$6 = 1;

/**
 * Creates a function that invokes `func` with the arguments of the created
 * function. If `func` is a property name, the created function returns the
 * property value for a given element. If `func` is an array or object, the
 * created function returns `true` for elements that contain the equivalent
 * source properties, otherwise it returns `false`.
 *
 * @static
 * @since 4.0.0
 * @memberOf _
 * @category Util
 * @param {*} [func=_.identity] The value to convert to a callback.
 * @returns {Function} Returns the callback.
 * @example
 *
 * var users = [
 *   { 'user': 'barney', 'age': 36, 'active': true },
 *   { 'user': 'fred',   'age': 40, 'active': false }
 * ];
 *
 * // The `_.matches` iteratee shorthand.
 * _.filter(users, _.iteratee({ 'user': 'barney', 'active': true }));
 * // => [{ 'user': 'barney', 'age': 36, 'active': true }]
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.filter(users, _.iteratee(['user', 'fred']));
 * // => [{ 'user': 'fred', 'age': 40 }]
 *
 * // The `_.property` iteratee shorthand.
 * _.map(users, _.iteratee('user'));
 * // => ['barney', 'fred']
 *
 * // Create custom iteratee shorthands.
 * _.iteratee = _.wrap(_.iteratee, function(iteratee, func) {
 *   return !_.isRegExp(func) ? iteratee(func) : function(string) {
 *     return func.test(string);
 *   };
 * });
 *
 * _.filter(['abc', 'def'], /ef/);
 * // => ['def']
 */
function iteratee(func) {
  return baseIteratee(typeof func == 'function' ? func : baseClone(func, CLONE_DEEP_FLAG$6));
}

/** Used for built-in method references. */
var arrayProto$1 = Array.prototype;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeJoin = arrayProto$1.join;

/**
 * Converts all elements in `array` into a string separated by `separator`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to convert.
 * @param {string} [separator=','] The element separator.
 * @returns {string} Returns the joined string.
 * @example
 *
 * _.join(['a', 'b', 'c'], '~');
 * // => 'a~b~c'
 */
function join(array, separator) {
  return array == null ? '' : nativeJoin.call(array, separator);
}

/**
 * Converts `string` to
 * [kebab case](https://en.wikipedia.org/wiki/Letter_case#Special_case_styles).
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to convert.
 * @returns {string} Returns the kebab cased string.
 * @example
 *
 * _.kebabCase('Foo Bar');
 * // => 'foo-bar'
 *
 * _.kebabCase('fooBar');
 * // => 'foo-bar'
 *
 * _.kebabCase('__FOO_BAR__');
 * // => 'foo-bar'
 */
var kebabCase = createCompounder(function (result, word, index) {
  return result + (index ? '-' : '') + word.toLowerCase();
});

/**
 * Creates an object composed of keys generated from the results of running
 * each element of `collection` thru `iteratee`. The corresponding value of
 * each key is the last element responsible for generating the key. The
 * iteratee is invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The iteratee to transform keys.
 * @returns {Object} Returns the composed aggregate object.
 * @example
 *
 * var array = [
 *   { 'dir': 'left', 'code': 97 },
 *   { 'dir': 'right', 'code': 100 }
 * ];
 *
 * _.keyBy(array, function(o) {
 *   return String.fromCharCode(o.code);
 * });
 * // => { 'a': { 'dir': 'left', 'code': 97 }, 'd': { 'dir': 'right', 'code': 100 } }
 *
 * _.keyBy(array, 'dir');
 * // => { 'left': { 'dir': 'left', 'code': 97 }, 'right': { 'dir': 'right', 'code': 100 } }
 */
var keyBy = createAggregator(function (result, value, key) {
  baseAssignValue(result, key, value);
});

/**
 * A specialized version of `_.lastIndexOf` which performs strict equality
 * comparisons of values, i.e. `===`.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} value The value to search for.
 * @param {number} fromIndex The index to search from.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function strictLastIndexOf(array, value, fromIndex) {
  var index = fromIndex + 1;
  while (index--) {
    if (array[index] === value) {
      return index;
    }
  }
  return index;
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$11 = Math.max;
var nativeMin$7 = Math.min;

/**
 * This method is like `_.indexOf` except that it iterates over elements of
 * `array` from right to left.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {*} value The value to search for.
 * @param {number} [fromIndex=array.length-1] The index to search from.
 * @returns {number} Returns the index of the matched value, else `-1`.
 * @example
 *
 * _.lastIndexOf([1, 2, 1, 2], 2);
 * // => 3
 *
 * // Search from the `fromIndex`.
 * _.lastIndexOf([1, 2, 1, 2], 2, 2);
 * // => 1
 */
function lastIndexOf(array, value, fromIndex) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return -1;
  }
  var index = length;
  if (fromIndex !== undefined) {
    index = toInteger(fromIndex);
    index = index < 0 ? nativeMax$11(length + index, 0) : nativeMin$7(index, length - 1);
  }
  return value === value ? strictLastIndexOf(array, value, index) : baseFindIndex(array, baseIsNaN, index, true);
}

/**
 * Converts `string`, as space separated words, to lower case.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to convert.
 * @returns {string} Returns the lower cased string.
 * @example
 *
 * _.lowerCase('--Foo-Bar--');
 * // => 'foo bar'
 *
 * _.lowerCase('fooBar');
 * // => 'foo bar'
 *
 * _.lowerCase('__FOO_BAR__');
 * // => 'foo bar'
 */
var lowerCase = createCompounder(function (result, word, index) {
  return result + (index ? ' ' : '') + word.toLowerCase();
});

/**
 * Converts the first character of `string` to lower case.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to convert.
 * @returns {string} Returns the converted string.
 * @example
 *
 * _.lowerFirst('Fred');
 * // => 'fred'
 *
 * _.lowerFirst('FRED');
 * // => 'fRED'
 */
var lowerFirst = createCaseFirst('toLowerCase');

/**
 * The base implementation of `_.lt` which doesn't coerce arguments.
 *
 * @private
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if `value` is less than `other`,
 *  else `false`.
 */
function baseLt(value, other) {
  return value < other;
}

/**
 * Checks if `value` is less than `other`.
 *
 * @static
 * @memberOf _
 * @since 3.9.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if `value` is less than `other`,
 *  else `false`.
 * @see _.gt
 * @example
 *
 * _.lt(1, 3);
 * // => true
 *
 * _.lt(3, 3);
 * // => false
 *
 * _.lt(3, 1);
 * // => false
 */
var lt = createRelationalOperation(baseLt);

/**
 * Checks if `value` is less than or equal to `other`.
 *
 * @static
 * @memberOf _
 * @since 3.9.0
 * @category Lang
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {boolean} Returns `true` if `value` is less than or equal to
 *  `other`, else `false`.
 * @see _.gte
 * @example
 *
 * _.lte(1, 3);
 * // => true
 *
 * _.lte(3, 3);
 * // => true
 *
 * _.lte(3, 1);
 * // => false
 */
var lte = createRelationalOperation(function (value, other) {
  return value <= other;
});

/**
 * The opposite of `_.mapValues`; this method creates an object with the
 * same values as `object` and keys generated by running each own enumerable
 * string keyed property of `object` thru `iteratee`. The iteratee is invoked
 * with three arguments: (value, key, object).
 *
 * @static
 * @memberOf _
 * @since 3.8.0
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Object} Returns the new mapped object.
 * @see _.mapValues
 * @example
 *
 * _.mapKeys({ 'a': 1, 'b': 2 }, function(value, key) {
 *   return key + value;
 * });
 * // => { 'a1': 1, 'b2': 2 }
 */
function mapKeys(object, iteratee) {
  var result = {};
  iteratee = baseIteratee(iteratee, 3);

  baseForOwn(object, function (value, key, object) {
    baseAssignValue(result, iteratee(value, key, object), value);
  });
  return result;
}

/**
 * Creates an object with the same keys as `object` and values generated
 * by running each own enumerable string keyed property of `object` thru
 * `iteratee`. The iteratee is invoked with three arguments:
 * (value, key, object).
 *
 * @static
 * @memberOf _
 * @since 2.4.0
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Object} Returns the new mapped object.
 * @see _.mapKeys
 * @example
 *
 * var users = {
 *   'fred':    { 'user': 'fred',    'age': 40 },
 *   'pebbles': { 'user': 'pebbles', 'age': 1 }
 * };
 *
 * _.mapValues(users, function(o) { return o.age; });
 * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
 *
 * // The `_.property` iteratee shorthand.
 * _.mapValues(users, 'age');
 * // => { 'fred': 40, 'pebbles': 1 } (iteration order is not guaranteed)
 */
function mapValues(object, iteratee) {
  var result = {};
  iteratee = baseIteratee(iteratee, 3);

  baseForOwn(object, function (value, key, object) {
    baseAssignValue(result, key, iteratee(value, key, object));
  });
  return result;
}

/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG$7 = 1;

/**
 * Creates a function that performs a partial deep comparison between a given
 * object and `source`, returning `true` if the given object has equivalent
 * property values, else `false`.
 *
 * **Note:** The created function is equivalent to `_.isMatch` with `source`
 * partially applied.
 *
 * Partial comparisons will match empty array and empty object `source`
 * values against any array or object value, respectively. See `_.isEqual`
 * for a list of supported value comparisons.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Util
 * @param {Object} source The object of property values to match.
 * @returns {Function} Returns the new spec function.
 * @example
 *
 * var objects = [
 *   { 'a': 1, 'b': 2, 'c': 3 },
 *   { 'a': 4, 'b': 5, 'c': 6 }
 * ];
 *
 * _.filter(objects, _.matches({ 'a': 4, 'c': 6 }));
 * // => [{ 'a': 4, 'b': 5, 'c': 6 }]
 */
function matches(source) {
  return baseMatches(baseClone(source, CLONE_DEEP_FLAG$7));
}

/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG$8 = 1;

/**
 * Creates a function that performs a partial deep comparison between the
 * value at `path` of a given object to `srcValue`, returning `true` if the
 * object value is equivalent, else `false`.
 *
 * **Note:** Partial comparisons will match empty array and empty object
 * `srcValue` values against any array or object value, respectively. See
 * `_.isEqual` for a list of supported value comparisons.
 *
 * @static
 * @memberOf _
 * @since 3.2.0
 * @category Util
 * @param {Array|string} path The path of the property to get.
 * @param {*} srcValue The value to match.
 * @returns {Function} Returns the new spec function.
 * @example
 *
 * var objects = [
 *   { 'a': 1, 'b': 2, 'c': 3 },
 *   { 'a': 4, 'b': 5, 'c': 6 }
 * ];
 *
 * _.find(objects, _.matchesProperty('a', 4));
 * // => { 'a': 4, 'b': 5, 'c': 6 }
 */
function matchesProperty(path, srcValue) {
  return baseMatchesProperty(path, baseClone(srcValue, CLONE_DEEP_FLAG$8));
}

/**
 * The base implementation of methods like `_.max` and `_.min` which accepts a
 * `comparator` to determine the extremum value.
 *
 * @private
 * @param {Array} array The array to iterate over.
 * @param {Function} iteratee The iteratee invoked per iteration.
 * @param {Function} comparator The comparator used to compare values.
 * @returns {*} Returns the extremum value.
 */
function baseExtremum(array, iteratee, comparator) {
  var index = -1,
      length = array.length;

  while (++index < length) {
    var value = array[index],
        current = iteratee(value);

    if (current != null && (computed === undefined ? current === current && !isSymbol(current) : comparator(current, computed))) {
      var computed = current,
          result = value;
    }
  }
  return result;
}

/**
 * Computes the maximum value of `array`. If `array` is empty or falsey,
 * `undefined` is returned.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Math
 * @param {Array} array The array to iterate over.
 * @returns {*} Returns the maximum value.
 * @example
 *
 * _.max([4, 2, 8, 6]);
 * // => 8
 *
 * _.max([]);
 * // => undefined
 */
function max(array) {
  return array && array.length ? baseExtremum(array, identity, baseGt) : undefined;
}

/**
 * This method is like `_.max` except that it accepts `iteratee` which is
 * invoked for each element in `array` to generate the criterion by which
 * the value is ranked. The iteratee is invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Math
 * @param {Array} array The array to iterate over.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {*} Returns the maximum value.
 * @example
 *
 * var objects = [{ 'n': 1 }, { 'n': 2 }];
 *
 * _.maxBy(objects, function(o) { return o.n; });
 * // => { 'n': 2 }
 *
 * // The `_.property` iteratee shorthand.
 * _.maxBy(objects, 'n');
 * // => { 'n': 2 }
 */
function maxBy(array, iteratee) {
  return array && array.length ? baseExtremum(array, baseIteratee(iteratee, 2), baseGt) : undefined;
}

/**
 * The base implementation of `_.sum` and `_.sumBy` without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} array The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {number} Returns the sum.
 */
function baseSum(array, iteratee) {
  var result,
      index = -1,
      length = array.length;

  while (++index < length) {
    var current = iteratee(array[index]);
    if (current !== undefined) {
      result = result === undefined ? current : result + current;
    }
  }
  return result;
}

/** Used as references for various `Number` constants. */
var NAN$2 = 0 / 0;

/**
 * The base implementation of `_.mean` and `_.meanBy` without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} array The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @returns {number} Returns the mean.
 */
function baseMean(array, iteratee) {
  var length = array == null ? 0 : array.length;
  return length ? baseSum(array, iteratee) / length : NAN$2;
}

/**
 * Computes the mean of the values in `array`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Math
 * @param {Array} array The array to iterate over.
 * @returns {number} Returns the mean.
 * @example
 *
 * _.mean([4, 2, 8, 6]);
 * // => 5
 */
function mean(array) {
  return baseMean(array, identity);
}

/**
 * This method is like `_.mean` except that it accepts `iteratee` which is
 * invoked for each element in `array` to generate the value to be averaged.
 * The iteratee is invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 4.7.0
 * @category Math
 * @param {Array} array The array to iterate over.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {number} Returns the mean.
 * @example
 *
 * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
 *
 * _.meanBy(objects, function(o) { return o.n; });
 * // => 5
 *
 * // The `_.property` iteratee shorthand.
 * _.meanBy(objects, 'n');
 * // => 5
 */
function meanBy(array, iteratee) {
  return baseMean(array, baseIteratee(iteratee, 2));
}

/**
 * This method is like `_.assign` except that it recursively merges own and
 * inherited enumerable string keyed properties of source objects into the
 * destination object. Source properties that resolve to `undefined` are
 * skipped if a destination value exists. Array and plain object properties
 * are merged recursively. Other objects and value types are overridden by
 * assignment. Source objects are applied from left to right. Subsequent
 * sources overwrite property assignments of previous sources.
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 0.5.0
 * @category Object
 * @param {Object} object The destination object.
 * @param {...Object} [sources] The source objects.
 * @returns {Object} Returns `object`.
 * @example
 *
 * var object = {
 *   'a': [{ 'b': 2 }, { 'd': 4 }]
 * };
 *
 * var other = {
 *   'a': [{ 'c': 3 }, { 'e': 5 }]
 * };
 *
 * _.merge(object, other);
 * // => { 'a': [{ 'b': 2, 'c': 3 }, { 'd': 4, 'e': 5 }] }
 */
var merge = createAssigner(function (object, source, srcIndex) {
  baseMerge(object, source, srcIndex);
});

/**
 * Creates a function that invokes the method at `path` of a given object.
 * Any additional arguments are provided to the invoked method.
 *
 * @static
 * @memberOf _
 * @since 3.7.0
 * @category Util
 * @param {Array|string} path The path of the method to invoke.
 * @param {...*} [args] The arguments to invoke the method with.
 * @returns {Function} Returns the new invoker function.
 * @example
 *
 * var objects = [
 *   { 'a': { 'b': _.constant(2) } },
 *   { 'a': { 'b': _.constant(1) } }
 * ];
 *
 * _.map(objects, _.method('a.b'));
 * // => [2, 1]
 *
 * _.map(objects, _.method(['a', 'b']));
 * // => [2, 1]
 */
var method = baseRest(function (path, args) {
  return function (object) {
    return baseInvoke(object, path, args);
  };
});

/**
 * The opposite of `_.method`; this method creates a function that invokes
 * the method at a given path of `object`. Any additional arguments are
 * provided to the invoked method.
 *
 * @static
 * @memberOf _
 * @since 3.7.0
 * @category Util
 * @param {Object} object The object to query.
 * @param {...*} [args] The arguments to invoke the method with.
 * @returns {Function} Returns the new invoker function.
 * @example
 *
 * var array = _.times(3, _.constant),
 *     object = { 'a': array, 'b': array, 'c': array };
 *
 * _.map(['a[2]', 'c[0]'], _.methodOf(object));
 * // => [2, 0]
 *
 * _.map([['a', '2'], ['c', '0']], _.methodOf(object));
 * // => [2, 0]
 */
var methodOf = baseRest(function (object, args) {
  return function (path) {
    return baseInvoke(object, path, args);
  };
});

/**
 * Computes the minimum value of `array`. If `array` is empty or falsey,
 * `undefined` is returned.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Math
 * @param {Array} array The array to iterate over.
 * @returns {*} Returns the minimum value.
 * @example
 *
 * _.min([4, 2, 8, 6]);
 * // => 2
 *
 * _.min([]);
 * // => undefined
 */
function min(array) {
  return array && array.length ? baseExtremum(array, identity, baseLt) : undefined;
}

/**
 * This method is like `_.min` except that it accepts `iteratee` which is
 * invoked for each element in `array` to generate the criterion by which
 * the value is ranked. The iteratee is invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Math
 * @param {Array} array The array to iterate over.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {*} Returns the minimum value.
 * @example
 *
 * var objects = [{ 'n': 1 }, { 'n': 2 }];
 *
 * _.minBy(objects, function(o) { return o.n; });
 * // => { 'n': 1 }
 *
 * // The `_.property` iteratee shorthand.
 * _.minBy(objects, 'n');
 * // => { 'n': 1 }
 */
function minBy(array, iteratee) {
  return array && array.length ? baseExtremum(array, baseIteratee(iteratee, 2), baseLt) : undefined;
}

/**
 * Adds all own enumerable string keyed function properties of a source
 * object to the destination object. If `object` is a function, then methods
 * are added to its prototype as well.
 *
 * **Note:** Use `_.runInContext` to create a pristine `lodash` function to
 * avoid conflicts caused by modifying the original.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Util
 * @param {Function|Object} [object=lodash] The destination object.
 * @param {Object} source The object of functions to add.
 * @param {Object} [options={}] The options object.
 * @param {boolean} [options.chain=true] Specify whether mixins are chainable.
 * @returns {Function|Object} Returns `object`.
 * @example
 *
 * function vowels(string) {
 *   return _.filter(string, function(v) {
 *     return /[aeiou]/i.test(v);
 *   });
 * }
 *
 * _.mixin({ 'vowels': vowels });
 * _.vowels('fred');
 * // => ['e']
 *
 * _('fred').vowels().value();
 * // => ['e']
 *
 * _.mixin({ 'vowels': vowels }, { 'chain': false });
 * _('fred').vowels();
 * // => ['e']
 */
function mixin(object, source, options) {
  var props = keys(source),
      methodNames = baseFunctions(source, props);

  var chain = !(isObject(options) && 'chain' in options) || !!options.chain,
      isFunc = isFunction(object);

  arrayEach(methodNames, function (methodName) {
    var func = source[methodName];
    object[methodName] = func;
    if (isFunc) {
      object.prototype[methodName] = function () {
        var chainAll = this.__chain__;
        if (chain || chainAll) {
          var result = object(this.__wrapped__),
              actions = result.__actions__ = copyArray(this.__actions__);

          actions.push({ 'func': func, 'args': arguments, 'thisArg': object });
          result.__chain__ = chainAll;
          return result;
        }
        return func.apply(object, arrayPush([this.value()], arguments));
      };
    }
  });

  return object;
}

/**
 * Multiply two numbers.
 *
 * @static
 * @memberOf _
 * @since 4.7.0
 * @category Math
 * @param {number} multiplier The first number in a multiplication.
 * @param {number} multiplicand The second number in a multiplication.
 * @returns {number} Returns the product.
 * @example
 *
 * _.multiply(6, 4);
 * // => 24
 */
var multiply = createMathOperation(function (multiplier, multiplicand) {
  return multiplier * multiplicand;
}, 1);

/** Error message constants. */
var FUNC_ERROR_TEXT$8 = 'Expected a function';

/**
 * Creates a function that negates the result of the predicate `func`. The
 * `func` predicate is invoked with the `this` binding and arguments of the
 * created function.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Function
 * @param {Function} predicate The predicate to negate.
 * @returns {Function} Returns the new negated function.
 * @example
 *
 * function isEven(n) {
 *   return n % 2 == 0;
 * }
 *
 * _.filter([1, 2, 3, 4, 5, 6], _.negate(isEven));
 * // => [1, 3, 5]
 */
function negate(predicate) {
  if (typeof predicate != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT$8);
  }
  return function () {
    var args = arguments;
    switch (args.length) {
      case 0:
        return !predicate.call(this);
      case 1:
        return !predicate.call(this, args[0]);
      case 2:
        return !predicate.call(this, args[0], args[1]);
      case 3:
        return !predicate.call(this, args[0], args[1], args[2]);
    }
    return !predicate.apply(this, args);
  };
}

/**
 * Converts `iterator` to an array.
 *
 * @private
 * @param {Object} iterator The iterator to convert.
 * @returns {Array} Returns the converted array.
 */
function iteratorToArray(iterator) {
  var data,
      result = [];

  while (!(data = iterator.next()).done) {
    result.push(data.value);
  }
  return result;
}

/** `Object#toString` result references. */
var mapTag$8 = '[object Map]';
var setTag$8 = '[object Set]';

/** Built-in value references. */
var symIterator = _Symbol ? _Symbol.iterator : undefined;

/**
 * Converts `value` to an array.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {Array} Returns the converted array.
 * @example
 *
 * _.toArray({ 'a': 1, 'b': 2 });
 * // => [1, 2]
 *
 * _.toArray('abc');
 * // => ['a', 'b', 'c']
 *
 * _.toArray(1);
 * // => []
 *
 * _.toArray(null);
 * // => []
 */
function toArray$1(value) {
  if (!value) {
    return [];
  }
  if (isArrayLike(value)) {
    return isString(value) ? stringToArray(value) : copyArray(value);
  }
  if (symIterator && value[symIterator]) {
    return iteratorToArray(value[symIterator]());
  }
  var tag = getTag$1(value),
      func = tag == mapTag$8 ? mapToArray : tag == setTag$8 ? setToArray : values;

  return func(value);
}

/**
 * Gets the next value on a wrapped object following the
 * [iterator protocol](https://mdn.io/iteration_protocols#iterator).
 *
 * @name next
 * @memberOf _
 * @since 4.0.0
 * @category Seq
 * @returns {Object} Returns the next iterator value.
 * @example
 *
 * var wrapped = _([1, 2]);
 *
 * wrapped.next();
 * // => { 'done': false, 'value': 1 }
 *
 * wrapped.next();
 * // => { 'done': false, 'value': 2 }
 *
 * wrapped.next();
 * // => { 'done': true, 'value': undefined }
 */
function wrapperNext() {
  if (this.__values__ === undefined) {
    this.__values__ = toArray$1(this.value());
  }
  var done = this.__index__ >= this.__values__.length,
      value = done ? undefined : this.__values__[this.__index__++];

  return { 'done': done, 'value': value };
}

/**
 * The base implementation of `_.nth` which doesn't coerce arguments.
 *
 * @private
 * @param {Array} array The array to query.
 * @param {number} n The index of the element to return.
 * @returns {*} Returns the nth element of `array`.
 */
function baseNth(array, n) {
  var length = array.length;
  if (!length) {
    return;
  }
  n += n < 0 ? length : 0;
  return isIndex(n, length) ? array[n] : undefined;
}

/**
 * Gets the element at index `n` of `array`. If `n` is negative, the nth
 * element from the end is returned.
 *
 * @static
 * @memberOf _
 * @since 4.11.0
 * @category Array
 * @param {Array} array The array to query.
 * @param {number} [n=0] The index of the element to return.
 * @returns {*} Returns the nth element of `array`.
 * @example
 *
 * var array = ['a', 'b', 'c', 'd'];
 *
 * _.nth(array, 1);
 * // => 'b'
 *
 * _.nth(array, -2);
 * // => 'c';
 */
function nth(array, n) {
  return array && array.length ? baseNth(array, toInteger(n)) : undefined;
}

/**
 * Creates a function that gets the argument at index `n`. If `n` is negative,
 * the nth argument from the end is returned.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Util
 * @param {number} [n=0] The index of the argument to return.
 * @returns {Function} Returns the new pass-thru function.
 * @example
 *
 * var func = _.nthArg(1);
 * func('a', 'b', 'c', 'd');
 * // => 'b'
 *
 * var func = _.nthArg(-2);
 * func('a', 'b', 'c', 'd');
 * // => 'c'
 */
function nthArg(n) {
  n = toInteger(n);
  return baseRest(function (args) {
    return baseNth(args, n);
  });
}

/**
 * The base implementation of `_.unset`.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {Array|string} path The property path to unset.
 * @returns {boolean} Returns `true` if the property is deleted, else `false`.
 */
function baseUnset(object, path) {
  path = castPath(path, object);
  object = parent(object, path);
  return object == null || delete object[toKey(last(path))];
}

/**
 * Used by `_.omit` to customize its `_.cloneDeep` use to only clone plain
 * objects.
 *
 * @private
 * @param {*} value The value to inspect.
 * @param {string} key The key of the property to inspect.
 * @returns {*} Returns the uncloned value or `undefined` to defer cloning to `_.cloneDeep`.
 */
function customOmitClone(value) {
  return isPlainObject(value) ? undefined : value;
}

/** Used to compose bitmasks for cloning. */
var CLONE_DEEP_FLAG$9 = 1;
var CLONE_FLAT_FLAG$1 = 2;
var CLONE_SYMBOLS_FLAG$5 = 4;

/**
 * The opposite of `_.pick`; this method creates an object composed of the
 * own and inherited enumerable property paths of `object` that are not omitted.
 *
 * **Note:** This method is considerably slower than `_.pick`.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The source object.
 * @param {...(string|string[])} [paths] The property paths to omit.
 * @returns {Object} Returns the new object.
 * @example
 *
 * var object = { 'a': 1, 'b': '2', 'c': 3 };
 *
 * _.omit(object, ['a', 'c']);
 * // => { 'b': '2' }
 */
var omit = flatRest(function (object, paths) {
  var result = {};
  if (object == null) {
    return result;
  }
  var isDeep = false;
  paths = arrayMap(paths, function (path) {
    path = castPath(path, object);
    isDeep || (isDeep = path.length > 1);
    return path;
  });
  copyObject(object, getAllKeysIn(object), result);
  if (isDeep) {
    result = baseClone(result, CLONE_DEEP_FLAG$9 | CLONE_FLAT_FLAG$1 | CLONE_SYMBOLS_FLAG$5, customOmitClone);
  }
  var length = paths.length;
  while (length--) {
    baseUnset(result, paths[length]);
  }
  return result;
});

/**
 * The base implementation of `_.set`.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {Array|string} path The path of the property to set.
 * @param {*} value The value to set.
 * @param {Function} [customizer] The function to customize path creation.
 * @returns {Object} Returns `object`.
 */
function baseSet(object, path, value, customizer) {
  if (!isObject(object)) {
    return object;
  }
  path = castPath(path, object);

  var index = -1,
      length = path.length,
      lastIndex = length - 1,
      nested = object;

  while (nested != null && ++index < length) {
    var key = toKey(path[index]),
        newValue = value;

    if (index != lastIndex) {
      var objValue = nested[key];
      newValue = customizer ? customizer(objValue, key, nested) : undefined;
      if (newValue === undefined) {
        newValue = isObject(objValue) ? objValue : isIndex(path[index + 1]) ? [] : {};
      }
    }
    assignValue(nested, key, newValue);
    nested = nested[key];
  }
  return object;
}

/**
 * The base implementation of  `_.pickBy` without support for iteratee shorthands.
 *
 * @private
 * @param {Object} object The source object.
 * @param {string[]} paths The property paths to pick.
 * @param {Function} predicate The function invoked per property.
 * @returns {Object} Returns the new object.
 */
function basePickBy(object, paths, predicate) {
  var index = -1,
      length = paths.length,
      result = {};

  while (++index < length) {
    var path = paths[index],
        value = baseGet(object, path);

    if (predicate(value, path)) {
      baseSet(result, castPath(path, object), value);
    }
  }
  return result;
}

/**
 * Creates an object composed of the `object` properties `predicate` returns
 * truthy for. The predicate is invoked with two arguments: (value, key).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The source object.
 * @param {Function} [predicate=_.identity] The function invoked per property.
 * @returns {Object} Returns the new object.
 * @example
 *
 * var object = { 'a': 1, 'b': '2', 'c': 3 };
 *
 * _.pickBy(object, _.isNumber);
 * // => { 'a': 1, 'c': 3 }
 */
function pickBy(object, predicate) {
  if (object == null) {
    return {};
  }
  var props = arrayMap(getAllKeysIn(object), function (prop) {
    return [prop];
  });
  predicate = baseIteratee(predicate);
  return basePickBy(object, props, function (value, path) {
    return predicate(value, path[0]);
  });
}

/**
 * The opposite of `_.pickBy`; this method creates an object composed of
 * the own and inherited enumerable string keyed properties of `object` that
 * `predicate` doesn't return truthy for. The predicate is invoked with two
 * arguments: (value, key).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The source object.
 * @param {Function} [predicate=_.identity] The function invoked per property.
 * @returns {Object} Returns the new object.
 * @example
 *
 * var object = { 'a': 1, 'b': '2', 'c': 3 };
 *
 * _.omitBy(object, _.isNumber);
 * // => { 'b': '2' }
 */
function omitBy(object, predicate) {
  return pickBy(object, negate(baseIteratee(predicate)));
}

/**
 * Creates a function that is restricted to invoking `func` once. Repeat calls
 * to the function return the value of the first invocation. The `func` is
 * invoked with the `this` binding and arguments of the created function.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to restrict.
 * @returns {Function} Returns the new restricted function.
 * @example
 *
 * var initialize = _.once(createApplication);
 * initialize();
 * initialize();
 * // => `createApplication` is invoked once
 */
function once(func) {
  return before(2, func);
}

/**
 * The base implementation of `_.sortBy` which uses `comparer` to define the
 * sort order of `array` and replaces criteria objects with their corresponding
 * values.
 *
 * @private
 * @param {Array} array The array to sort.
 * @param {Function} comparer The function to define sort order.
 * @returns {Array} Returns `array`.
 */
function baseSortBy(array, comparer) {
  var length = array.length;

  array.sort(comparer);
  while (length--) {
    array[length] = array[length].value;
  }
  return array;
}

/**
 * Compares values to sort them in ascending order.
 *
 * @private
 * @param {*} value The value to compare.
 * @param {*} other The other value to compare.
 * @returns {number} Returns the sort order indicator for `value`.
 */
function compareAscending(value, other) {
  if (value !== other) {
    var valIsDefined = value !== undefined,
        valIsNull = value === null,
        valIsReflexive = value === value,
        valIsSymbol = isSymbol(value);

    var othIsDefined = other !== undefined,
        othIsNull = other === null,
        othIsReflexive = other === other,
        othIsSymbol = isSymbol(other);

    if (!othIsNull && !othIsSymbol && !valIsSymbol && value > other || valIsSymbol && othIsDefined && othIsReflexive && !othIsNull && !othIsSymbol || valIsNull && othIsDefined && othIsReflexive || !valIsDefined && othIsReflexive || !valIsReflexive) {
      return 1;
    }
    if (!valIsNull && !valIsSymbol && !othIsSymbol && value < other || othIsSymbol && valIsDefined && valIsReflexive && !valIsNull && !valIsSymbol || othIsNull && valIsDefined && valIsReflexive || !othIsDefined && valIsReflexive || !othIsReflexive) {
      return -1;
    }
  }
  return 0;
}

/**
 * Used by `_.orderBy` to compare multiple properties of a value to another
 * and stable sort them.
 *
 * If `orders` is unspecified, all values are sorted in ascending order. Otherwise,
 * specify an order of "desc" for descending or "asc" for ascending sort order
 * of corresponding values.
 *
 * @private
 * @param {Object} object The object to compare.
 * @param {Object} other The other object to compare.
 * @param {boolean[]|string[]} orders The order to sort by for each property.
 * @returns {number} Returns the sort order indicator for `object`.
 */
function compareMultiple(object, other, orders) {
  var index = -1,
      objCriteria = object.criteria,
      othCriteria = other.criteria,
      length = objCriteria.length,
      ordersLength = orders.length;

  while (++index < length) {
    var result = compareAscending(objCriteria[index], othCriteria[index]);
    if (result) {
      if (index >= ordersLength) {
        return result;
      }
      var order = orders[index];
      return result * (order == 'desc' ? -1 : 1);
    }
  }
  // Fixes an `Array#sort` bug in the JS engine embedded in Adobe applications
  // that causes it, under certain circumstances, to provide the same value for
  // `object` and `other`. See https://github.com/jashkenas/underscore/pull/1247
  // for more details.
  //
  // This also ensures a stable sort in V8 and other engines.
  // See https://bugs.chromium.org/p/v8/issues/detail?id=90 for more details.
  return object.index - other.index;
}

/**
 * The base implementation of `_.orderBy` without param guards.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function[]|Object[]|string[]} iteratees The iteratees to sort by.
 * @param {string[]} orders The sort orders of `iteratees`.
 * @returns {Array} Returns the new sorted array.
 */
function baseOrderBy(collection, iteratees, orders) {
  var index = -1;
  iteratees = arrayMap(iteratees.length ? iteratees : [identity], baseUnary(baseIteratee));

  var result = baseMap(collection, function (value, key, collection) {
    var criteria = arrayMap(iteratees, function (iteratee) {
      return iteratee(value);
    });
    return { 'criteria': criteria, 'index': ++index, 'value': value };
  });

  return baseSortBy(result, function (object, other) {
    return compareMultiple(object, other, orders);
  });
}

/**
 * This method is like `_.sortBy` except that it allows specifying the sort
 * orders of the iteratees to sort by. If `orders` is unspecified, all values
 * are sorted in ascending order. Otherwise, specify an order of "desc" for
 * descending or "asc" for ascending sort order of corresponding values.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Array[]|Function[]|Object[]|string[]} [iteratees=[_.identity]]
 *  The iteratees to sort by.
 * @param {string[]} [orders] The sort orders of `iteratees`.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.reduce`.
 * @returns {Array} Returns the new sorted array.
 * @example
 *
 * var users = [
 *   { 'user': 'fred',   'age': 48 },
 *   { 'user': 'barney', 'age': 34 },
 *   { 'user': 'fred',   'age': 40 },
 *   { 'user': 'barney', 'age': 36 }
 * ];
 *
 * // Sort by `user` in ascending order and by `age` in descending order.
 * _.orderBy(users, ['user', 'age'], ['asc', 'desc']);
 * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
 */
function orderBy(collection, iteratees, orders, guard) {
  if (collection == null) {
    return [];
  }
  if (!isArray(iteratees)) {
    iteratees = iteratees == null ? [] : [iteratees];
  }
  orders = guard ? undefined : orders;
  if (!isArray(orders)) {
    orders = orders == null ? [] : [orders];
  }
  return baseOrderBy(collection, iteratees, orders);
}

/**
 * Creates a function like `_.over`.
 *
 * @private
 * @param {Function} arrayFunc The function to iterate over iteratees.
 * @returns {Function} Returns the new over function.
 */
function createOver(arrayFunc) {
  return flatRest(function (iteratees) {
    iteratees = arrayMap(iteratees, baseUnary(baseIteratee));
    return baseRest(function (args) {
      var thisArg = this;
      return arrayFunc(iteratees, function (iteratee) {
        return apply(iteratee, thisArg, args);
      });
    });
  });
}

/**
 * Creates a function that invokes `iteratees` with the arguments it receives
 * and returns their results.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Util
 * @param {...(Function|Function[])} [iteratees=[_.identity]]
 *  The iteratees to invoke.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var func = _.over([Math.max, Math.min]);
 *
 * func(1, 2, 3, 4);
 * // => [4, 1]
 */
var over = createOver(arrayMap);

/**
 * A `baseRest` alias which can be replaced with `identity` by module
 * replacement plugins.
 *
 * @private
 * @type {Function}
 * @param {Function} func The function to apply a rest parameter to.
 * @returns {Function} Returns the new function.
 */
var castRest = baseRest;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMin$8 = Math.min;

/**
 * Creates a function that invokes `func` with its arguments transformed.
 *
 * @static
 * @since 4.0.0
 * @memberOf _
 * @category Function
 * @param {Function} func The function to wrap.
 * @param {...(Function|Function[])} [transforms=[_.identity]]
 *  The argument transforms.
 * @returns {Function} Returns the new function.
 * @example
 *
 * function doubled(n) {
 *   return n * 2;
 * }
 *
 * function square(n) {
 *   return n * n;
 * }
 *
 * var func = _.overArgs(function(x, y) {
 *   return [x, y];
 * }, [square, doubled]);
 *
 * func(9, 3);
 * // => [81, 6]
 *
 * func(10, 5);
 * // => [100, 10]
 */
var overArgs = castRest(function (func, transforms) {
  transforms = transforms.length == 1 && isArray(transforms[0]) ? arrayMap(transforms[0], baseUnary(baseIteratee)) : arrayMap(baseFlatten(transforms, 1), baseUnary(baseIteratee));

  var funcsLength = transforms.length;
  return baseRest(function (args) {
    var index = -1,
        length = nativeMin$8(args.length, funcsLength);

    while (++index < length) {
      args[index] = transforms[index].call(this, args[index]);
    }
    return apply(func, this, args);
  });
});

/**
 * Creates a function that checks if **all** of the `predicates` return
 * truthy when invoked with the arguments it receives.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Util
 * @param {...(Function|Function[])} [predicates=[_.identity]]
 *  The predicates to check.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var func = _.overEvery([Boolean, isFinite]);
 *
 * func('1');
 * // => true
 *
 * func(null);
 * // => false
 *
 * func(NaN);
 * // => false
 */
var overEvery = createOver(arrayEvery);

/**
 * Creates a function that checks if **any** of the `predicates` return
 * truthy when invoked with the arguments it receives.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Util
 * @param {...(Function|Function[])} [predicates=[_.identity]]
 *  The predicates to check.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var func = _.overSome([Boolean, isFinite]);
 *
 * func('1');
 * // => true
 *
 * func(null);
 * // => true
 *
 * func(NaN);
 * // => false
 */
var overSome = createOver(arraySome);

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER$3 = 9007199254740991;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeFloor$1 = Math.floor;

/**
 * The base implementation of `_.repeat` which doesn't coerce arguments.
 *
 * @private
 * @param {string} string The string to repeat.
 * @param {number} n The number of times to repeat the string.
 * @returns {string} Returns the repeated string.
 */
function baseRepeat(string, n) {
  var result = '';
  if (!string || n < 1 || n > MAX_SAFE_INTEGER$3) {
    return result;
  }
  // Leverage the exponentiation by squaring algorithm for a faster repeat.
  // See https://en.wikipedia.org/wiki/Exponentiation_by_squaring for more details.
  do {
    if (n % 2) {
      result += string;
    }
    n = nativeFloor$1(n / 2);
    if (n) {
      string += string;
    }
  } while (n);

  return result;
}

/**
 * Gets the size of an ASCII `string`.
 *
 * @private
 * @param {string} string The string inspect.
 * @returns {number} Returns the string size.
 */
var asciiSize = baseProperty('length');

/** Used to compose unicode character classes. */
var rsAstralRange$3 = '\\ud800-\\udfff';
var rsComboMarksRange$4 = '\\u0300-\\u036f';
var reComboHalfMarksRange$4 = '\\ufe20-\\ufe2f';
var rsComboSymbolsRange$4 = '\\u20d0-\\u20ff';
var rsComboRange$4 = rsComboMarksRange$4 + reComboHalfMarksRange$4 + rsComboSymbolsRange$4;
var rsVarRange$3 = '\\ufe0e\\ufe0f';

/** Used to compose unicode capture groups. */
var rsAstral$1 = '[' + rsAstralRange$3 + ']';
var rsCombo$3 = '[' + rsComboRange$4 + ']';
var rsFitz$2 = '\\ud83c[\\udffb-\\udfff]';
var rsModifier$2 = '(?:' + rsCombo$3 + '|' + rsFitz$2 + ')';
var rsNonAstral$2 = '[^' + rsAstralRange$3 + ']';
var rsRegional$2 = '(?:\\ud83c[\\udde6-\\uddff]){2}';
var rsSurrPair$2 = '[\\ud800-\\udbff][\\udc00-\\udfff]';
var rsZWJ$3 = '\\u200d';

/** Used to compose unicode regexes. */
var reOptMod$2 = rsModifier$2 + '?';
var rsOptVar$2 = '[' + rsVarRange$3 + ']?';
var rsOptJoin$2 = '(?:' + rsZWJ$3 + '(?:' + [rsNonAstral$2, rsRegional$2, rsSurrPair$2].join('|') + ')' + rsOptVar$2 + reOptMod$2 + ')*';
var rsSeq$2 = rsOptVar$2 + reOptMod$2 + rsOptJoin$2;
var rsSymbol$1 = '(?:' + [rsNonAstral$2 + rsCombo$3 + '?', rsCombo$3, rsRegional$2, rsSurrPair$2, rsAstral$1].join('|') + ')';

/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
var reUnicode$1 = RegExp(rsFitz$2 + '(?=' + rsFitz$2 + ')|' + rsSymbol$1 + rsSeq$2, 'g');

/**
 * Gets the size of a Unicode `string`.
 *
 * @private
 * @param {string} string The string inspect.
 * @returns {number} Returns the string size.
 */
function unicodeSize(string) {
    var result = reUnicode$1.lastIndex = 0;
    while (reUnicode$1.test(string)) {
        ++result;
    }
    return result;
}

/**
 * Gets the number of symbols in `string`.
 *
 * @private
 * @param {string} string The string to inspect.
 * @returns {number} Returns the string size.
 */
function stringSize(string) {
  return hasUnicode(string) ? unicodeSize(string) : asciiSize(string);
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeCeil$2 = Math.ceil;

/**
 * Creates the padding for `string` based on `length`. The `chars` string
 * is truncated if the number of characters exceeds `length`.
 *
 * @private
 * @param {number} length The padding length.
 * @param {string} [chars=' '] The string used as padding.
 * @returns {string} Returns the padding for `string`.
 */
function createPadding(length, chars) {
  chars = chars === undefined ? ' ' : baseToString(chars);

  var charsLength = chars.length;
  if (charsLength < 2) {
    return charsLength ? baseRepeat(chars, length) : chars;
  }
  var result = baseRepeat(chars, nativeCeil$2(length / stringSize(chars)));
  return hasUnicode(chars) ? castSlice(stringToArray(result), 0, length).join('') : result.slice(0, length);
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeCeil$1 = Math.ceil;
var nativeFloor = Math.floor;

/**
 * Pads `string` on the left and right sides if it's shorter than `length`.
 * Padding characters are truncated if they can't be evenly divided by `length`.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to pad.
 * @param {number} [length=0] The padding length.
 * @param {string} [chars=' '] The string used as padding.
 * @returns {string} Returns the padded string.
 * @example
 *
 * _.pad('abc', 8);
 * // => '  abc   '
 *
 * _.pad('abc', 8, '_-');
 * // => '_-abc_-_'
 *
 * _.pad('abc', 3);
 * // => 'abc'
 */
function pad(string, length, chars) {
  string = toString(string);
  length = toInteger(length);

  var strLength = length ? stringSize(string) : 0;
  if (!length || strLength >= length) {
    return string;
  }
  var mid = (length - strLength) / 2;
  return createPadding(nativeFloor(mid), chars) + string + createPadding(nativeCeil$1(mid), chars);
}

/**
 * Pads `string` on the right side if it's shorter than `length`. Padding
 * characters are truncated if they exceed `length`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to pad.
 * @param {number} [length=0] The padding length.
 * @param {string} [chars=' '] The string used as padding.
 * @returns {string} Returns the padded string.
 * @example
 *
 * _.padEnd('abc', 6);
 * // => 'abc   '
 *
 * _.padEnd('abc', 6, '_-');
 * // => 'abc_-_'
 *
 * _.padEnd('abc', 3);
 * // => 'abc'
 */
function padEnd(string, length, chars) {
  string = toString(string);
  length = toInteger(length);

  var strLength = length ? stringSize(string) : 0;
  return length && strLength < length ? string + createPadding(length - strLength, chars) : string;
}

/**
 * Pads `string` on the left side if it's shorter than `length`. Padding
 * characters are truncated if they exceed `length`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to pad.
 * @param {number} [length=0] The padding length.
 * @param {string} [chars=' '] The string used as padding.
 * @returns {string} Returns the padded string.
 * @example
 *
 * _.padStart('abc', 6);
 * // => '   abc'
 *
 * _.padStart('abc', 6, '_-');
 * // => '_-_abc'
 *
 * _.padStart('abc', 3);
 * // => 'abc'
 */
function padStart(string, length, chars) {
  string = toString(string);
  length = toInteger(length);

  var strLength = length ? stringSize(string) : 0;
  return length && strLength < length ? createPadding(length - strLength, chars) + string : string;
}

/** Used to match leading and trailing whitespace. */
var reTrimStart = /^\s+/;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeParseInt = root.parseInt;

/**
 * Converts `string` to an integer of the specified radix. If `radix` is
 * `undefined` or `0`, a `radix` of `10` is used unless `value` is a
 * hexadecimal, in which case a `radix` of `16` is used.
 *
 * **Note:** This method aligns with the
 * [ES5 implementation](https://es5.github.io/#x15.1.2.2) of `parseInt`.
 *
 * @static
 * @memberOf _
 * @since 1.1.0
 * @category String
 * @param {string} string The string to convert.
 * @param {number} [radix=10] The radix to interpret `value` by.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {number} Returns the converted integer.
 * @example
 *
 * _.parseInt('08');
 * // => 8
 *
 * _.map(['6', '08', '10'], _.parseInt);
 * // => [6, 8, 10]
 */
function parseInt$1(string, radix, guard) {
  if (guard || radix == null) {
    radix = 0;
  } else if (radix) {
    radix = +radix;
  }
  return nativeParseInt(toString(string).replace(reTrimStart, ''), radix || 0);
}

/** Used to compose bitmasks for function metadata. */
var WRAP_PARTIAL_FLAG$6 = 32;

/**
 * Creates a function that invokes `func` with `partials` prepended to the
 * arguments it receives. This method is like `_.bind` except it does **not**
 * alter the `this` binding.
 *
 * The `_.partial.placeholder` value, which defaults to `_` in monolithic
 * builds, may be used as a placeholder for partially applied arguments.
 *
 * **Note:** This method doesn't set the "length" property of partially
 * applied functions.
 *
 * @static
 * @memberOf _
 * @since 0.2.0
 * @category Function
 * @param {Function} func The function to partially apply arguments to.
 * @param {...*} [partials] The arguments to be partially applied.
 * @returns {Function} Returns the new partially applied function.
 * @example
 *
 * function greet(greeting, name) {
 *   return greeting + ' ' + name;
 * }
 *
 * var sayHelloTo = _.partial(greet, 'hello');
 * sayHelloTo('fred');
 * // => 'hello fred'
 *
 * // Partially applied with placeholders.
 * var greetFred = _.partial(greet, _, 'fred');
 * greetFred('hi');
 * // => 'hi fred'
 */
var partial = baseRest(function (func, partials) {
  var holders = replaceHolders(partials, getHolder(partial));
  return createWrap(func, WRAP_PARTIAL_FLAG$6, undefined, partials, holders);
});

// Assign default placeholders.
partial.placeholder = {};

/** Used to compose bitmasks for function metadata. */
var WRAP_PARTIAL_RIGHT_FLAG$3 = 64;

/**
 * This method is like `_.partial` except that partially applied arguments
 * are appended to the arguments it receives.
 *
 * The `_.partialRight.placeholder` value, which defaults to `_` in monolithic
 * builds, may be used as a placeholder for partially applied arguments.
 *
 * **Note:** This method doesn't set the "length" property of partially
 * applied functions.
 *
 * @static
 * @memberOf _
 * @since 1.0.0
 * @category Function
 * @param {Function} func The function to partially apply arguments to.
 * @param {...*} [partials] The arguments to be partially applied.
 * @returns {Function} Returns the new partially applied function.
 * @example
 *
 * function greet(greeting, name) {
 *   return greeting + ' ' + name;
 * }
 *
 * var greetFred = _.partialRight(greet, 'fred');
 * greetFred('hi');
 * // => 'hi fred'
 *
 * // Partially applied with placeholders.
 * var sayHelloTo = _.partialRight(greet, 'hello', _);
 * sayHelloTo('fred');
 * // => 'hello fred'
 */
var partialRight = baseRest(function (func, partials) {
  var holders = replaceHolders(partials, getHolder(partialRight));
  return createWrap(func, WRAP_PARTIAL_RIGHT_FLAG$3, undefined, partials, holders);
});

// Assign default placeholders.
partialRight.placeholder = {};

/**
 * Creates an array of elements split into two groups, the first of which
 * contains elements `predicate` returns truthy for, the second of which
 * contains elements `predicate` returns falsey for. The predicate is
 * invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the array of grouped elements.
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'age': 36, 'active': false },
 *   { 'user': 'fred',    'age': 40, 'active': true },
 *   { 'user': 'pebbles', 'age': 1,  'active': false }
 * ];
 *
 * _.partition(users, function(o) { return o.active; });
 * // => objects for [['fred'], ['barney', 'pebbles']]
 *
 * // The `_.matches` iteratee shorthand.
 * _.partition(users, { 'age': 1, 'active': false });
 * // => objects for [['pebbles'], ['barney', 'fred']]
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.partition(users, ['active', false]);
 * // => objects for [['barney', 'pebbles'], ['fred']]
 *
 * // The `_.property` iteratee shorthand.
 * _.partition(users, 'active');
 * // => objects for [['fred'], ['barney', 'pebbles']]
 */
var partition = createAggregator(function (result, value, key) {
  result[key ? 0 : 1].push(value);
}, function () {
  return [[], []];
});

/**
 * The base implementation of `_.pick` without support for individual
 * property identifiers.
 *
 * @private
 * @param {Object} object The source object.
 * @param {string[]} paths The property paths to pick.
 * @returns {Object} Returns the new object.
 */
function basePick(object, paths) {
  return basePickBy(object, paths, function (value, path) {
    return hasIn(object, path);
  });
}

/**
 * Creates an object composed of the picked `object` properties.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The source object.
 * @param {...(string|string[])} [paths] The property paths to pick.
 * @returns {Object} Returns the new object.
 * @example
 *
 * var object = { 'a': 1, 'b': '2', 'c': 3 };
 *
 * _.pick(object, ['a', 'c']);
 * // => { 'a': 1, 'c': 3 }
 */
var pick = flatRest(function (object, paths) {
  return object == null ? {} : basePick(object, paths);
});

/**
 * Creates a clone of the chain sequence planting `value` as the wrapped value.
 *
 * @name plant
 * @memberOf _
 * @since 3.2.0
 * @category Seq
 * @param {*} value The value to plant.
 * @returns {Object} Returns the new `lodash` wrapper instance.
 * @example
 *
 * function square(n) {
 *   return n * n;
 * }
 *
 * var wrapped = _([1, 2]).map(square);
 * var other = wrapped.plant([3, 4]);
 *
 * other.value();
 * // => [9, 16]
 *
 * wrapped.value();
 * // => [1, 4]
 */
function wrapperPlant(value) {
  var result,
      parent = this;

  while (parent instanceof baseLodash) {
    var clone = wrapperClone(parent);
    clone.__index__ = 0;
    clone.__values__ = undefined;
    if (result) {
      previous.__wrapped__ = clone;
    } else {
      result = clone;
    }
    var previous = clone;
    parent = parent.__wrapped__;
  }
  previous.__wrapped__ = value;
  return result;
}

/**
 * The opposite of `_.property`; this method creates a function that returns
 * the value at a given path of `object`.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Util
 * @param {Object} object The object to query.
 * @returns {Function} Returns the new accessor function.
 * @example
 *
 * var array = [0, 1, 2],
 *     object = { 'a': array, 'b': array, 'c': array };
 *
 * _.map(['a[2]', 'c[0]'], _.propertyOf(object));
 * // => [2, 0]
 *
 * _.map([['a', '2'], ['c', '0']], _.propertyOf(object));
 * // => [2, 0]
 */
function propertyOf(object) {
  return function (path) {
    return object == null ? undefined : baseGet(object, path);
  };
}

/**
 * This function is like `baseIndexOf` except that it accepts a comparator.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {*} value The value to search for.
 * @param {number} fromIndex The index to search from.
 * @param {Function} comparator The comparator invoked per element.
 * @returns {number} Returns the index of the matched value, else `-1`.
 */
function baseIndexOfWith(array, value, fromIndex, comparator) {
  var index = fromIndex - 1,
      length = array.length;

  while (++index < length) {
    if (comparator(array[index], value)) {
      return index;
    }
  }
  return -1;
}

/** Used for built-in method references. */
var arrayProto$2 = Array.prototype;

/** Built-in value references. */
var splice$1 = arrayProto$2.splice;

/**
 * The base implementation of `_.pullAllBy` without support for iteratee
 * shorthands.
 *
 * @private
 * @param {Array} array The array to modify.
 * @param {Array} values The values to remove.
 * @param {Function} [iteratee] The iteratee invoked per element.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns `array`.
 */
function basePullAll(array, values, iteratee, comparator) {
  var indexOf = comparator ? baseIndexOfWith : baseIndexOf,
      index = -1,
      length = values.length,
      seen = array;

  if (array === values) {
    values = copyArray(values);
  }
  if (iteratee) {
    seen = arrayMap(array, baseUnary(iteratee));
  }
  while (++index < length) {
    var fromIndex = 0,
        value = values[index],
        computed = iteratee ? iteratee(value) : value;

    while ((fromIndex = indexOf(seen, computed, fromIndex, comparator)) > -1) {
      if (seen !== array) {
        splice$1.call(seen, fromIndex, 1);
      }
      splice$1.call(array, fromIndex, 1);
    }
  }
  return array;
}

/**
 * This method is like `_.pull` except that it accepts an array of values to remove.
 *
 * **Note:** Unlike `_.difference`, this method mutates `array`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to modify.
 * @param {Array} values The values to remove.
 * @returns {Array} Returns `array`.
 * @example
 *
 * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
 *
 * _.pullAll(array, ['a', 'c']);
 * console.log(array);
 * // => ['b', 'b']
 */
function pullAll(array, values) {
  return array && array.length && values && values.length ? basePullAll(array, values) : array;
}

/**
 * Removes all given values from `array` using
 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons.
 *
 * **Note:** Unlike `_.without`, this method mutates `array`. Use `_.remove`
 * to remove elements from an array by predicate.
 *
 * @static
 * @memberOf _
 * @since 2.0.0
 * @category Array
 * @param {Array} array The array to modify.
 * @param {...*} [values] The values to remove.
 * @returns {Array} Returns `array`.
 * @example
 *
 * var array = ['a', 'b', 'c', 'a', 'b', 'c'];
 *
 * _.pull(array, 'a', 'c');
 * console.log(array);
 * // => ['b', 'b']
 */
var pull = baseRest(pullAll);

/**
 * This method is like `_.pullAll` except that it accepts `iteratee` which is
 * invoked for each element of `array` and `values` to generate the criterion
 * by which they're compared. The iteratee is invoked with one argument: (value).
 *
 * **Note:** Unlike `_.differenceBy`, this method mutates `array`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to modify.
 * @param {Array} values The values to remove.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {Array} Returns `array`.
 * @example
 *
 * var array = [{ 'x': 1 }, { 'x': 2 }, { 'x': 3 }, { 'x': 1 }];
 *
 * _.pullAllBy(array, [{ 'x': 1 }, { 'x': 3 }], 'x');
 * console.log(array);
 * // => [{ 'x': 2 }]
 */
function pullAllBy(array, values, iteratee) {
  return array && array.length && values && values.length ? basePullAll(array, values, baseIteratee(iteratee, 2)) : array;
}

/**
 * This method is like `_.pullAll` except that it accepts `comparator` which
 * is invoked to compare elements of `array` to `values`. The comparator is
 * invoked with two arguments: (arrVal, othVal).
 *
 * **Note:** Unlike `_.differenceWith`, this method mutates `array`.
 *
 * @static
 * @memberOf _
 * @since 4.6.0
 * @category Array
 * @param {Array} array The array to modify.
 * @param {Array} values The values to remove.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns `array`.
 * @example
 *
 * var array = [{ 'x': 1, 'y': 2 }, { 'x': 3, 'y': 4 }, { 'x': 5, 'y': 6 }];
 *
 * _.pullAllWith(array, [{ 'x': 3, 'y': 4 }], _.isEqual);
 * console.log(array);
 * // => [{ 'x': 1, 'y': 2 }, { 'x': 5, 'y': 6 }]
 */
function pullAllWith(array, values, comparator) {
  return array && array.length && values && values.length ? basePullAll(array, values, undefined, comparator) : array;
}

/** Used for built-in method references. */
var arrayProto$3 = Array.prototype;

/** Built-in value references. */
var splice$2 = arrayProto$3.splice;

/**
 * The base implementation of `_.pullAt` without support for individual
 * indexes or capturing the removed elements.
 *
 * @private
 * @param {Array} array The array to modify.
 * @param {number[]} indexes The indexes of elements to remove.
 * @returns {Array} Returns `array`.
 */
function basePullAt(array, indexes) {
  var length = array ? indexes.length : 0,
      lastIndex = length - 1;

  while (length--) {
    var index = indexes[length];
    if (length == lastIndex || index !== previous) {
      var previous = index;
      if (isIndex(index)) {
        splice$2.call(array, index, 1);
      } else {
        baseUnset(array, index);
      }
    }
  }
  return array;
}

/**
 * Removes elements from `array` corresponding to `indexes` and returns an
 * array of removed elements.
 *
 * **Note:** Unlike `_.at`, this method mutates `array`.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to modify.
 * @param {...(number|number[])} [indexes] The indexes of elements to remove.
 * @returns {Array} Returns the new array of removed elements.
 * @example
 *
 * var array = ['a', 'b', 'c', 'd'];
 * var pulled = _.pullAt(array, [1, 3]);
 *
 * console.log(array);
 * // => ['a', 'c']
 *
 * console.log(pulled);
 * // => ['b', 'd']
 */
var pullAt = flatRest(function (array, indexes) {
  var length = array == null ? 0 : array.length,
      result = baseAt(array, indexes);

  basePullAt(array, arrayMap(indexes, function (index) {
    return isIndex(index, length) ? +index : index;
  }).sort(compareAscending));

  return result;
});

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeFloor$2 = Math.floor;
var nativeRandom$1 = Math.random;

/**
 * The base implementation of `_.random` without support for returning
 * floating-point numbers.
 *
 * @private
 * @param {number} lower The lower bound.
 * @param {number} upper The upper bound.
 * @returns {number} Returns the random number.
 */
function baseRandom(lower, upper) {
  return lower + nativeFloor$2(nativeRandom$1() * (upper - lower + 1));
}

/** Built-in method references without a dependency on `root`. */
var freeParseFloat = parseFloat;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMin$9 = Math.min;
var nativeRandom = Math.random;

/**
 * Produces a random number between the inclusive `lower` and `upper` bounds.
 * If only one argument is provided a number between `0` and the given number
 * is returned. If `floating` is `true`, or either `lower` or `upper` are
 * floats, a floating-point number is returned instead of an integer.
 *
 * **Note:** JavaScript follows the IEEE-754 standard for resolving
 * floating-point values which can produce unexpected results.
 *
 * @static
 * @memberOf _
 * @since 0.7.0
 * @category Number
 * @param {number} [lower=0] The lower bound.
 * @param {number} [upper=1] The upper bound.
 * @param {boolean} [floating] Specify returning a floating-point number.
 * @returns {number} Returns the random number.
 * @example
 *
 * _.random(0, 5);
 * // => an integer between 0 and 5
 *
 * _.random(5);
 * // => also an integer between 0 and 5
 *
 * _.random(5, true);
 * // => a floating-point number between 0 and 5
 *
 * _.random(1.2, 5.2);
 * // => a floating-point number between 1.2 and 5.2
 */
function random(lower, upper, floating) {
  if (floating && typeof floating != 'boolean' && isIterateeCall(lower, upper, floating)) {
    upper = floating = undefined;
  }
  if (floating === undefined) {
    if (typeof upper == 'boolean') {
      floating = upper;
      upper = undefined;
    } else if (typeof lower == 'boolean') {
      floating = lower;
      lower = undefined;
    }
  }
  if (lower === undefined && upper === undefined) {
    lower = 0;
    upper = 1;
  } else {
    lower = toFinite(lower);
    if (upper === undefined) {
      upper = lower;
      lower = 0;
    } else {
      upper = toFinite(upper);
    }
  }
  if (lower > upper) {
    var temp = lower;
    lower = upper;
    upper = temp;
  }
  if (floating || lower % 1 || upper % 1) {
    var rand = nativeRandom();
    return nativeMin$9(lower + rand * (upper - lower + freeParseFloat('1e-' + ((rand + '').length - 1))), upper);
  }
  return baseRandom(lower, upper);
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeCeil$3 = Math.ceil;
var nativeMax$12 = Math.max;

/**
 * The base implementation of `_.range` and `_.rangeRight` which doesn't
 * coerce arguments.
 *
 * @private
 * @param {number} start The start of the range.
 * @param {number} end The end of the range.
 * @param {number} step The value to increment or decrement by.
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Array} Returns the range of numbers.
 */
function baseRange(start, end, step, fromRight) {
  var index = -1,
      length = nativeMax$12(nativeCeil$3((end - start) / (step || 1)), 0),
      result = Array(length);

  while (length--) {
    result[fromRight ? length : ++index] = start;
    start += step;
  }
  return result;
}

/**
 * Creates a `_.range` or `_.rangeRight` function.
 *
 * @private
 * @param {boolean} [fromRight] Specify iterating from right to left.
 * @returns {Function} Returns the new range function.
 */
function createRange(fromRight) {
  return function (start, end, step) {
    if (step && typeof step != 'number' && isIterateeCall(start, end, step)) {
      end = step = undefined;
    }
    // Ensure the sign of `-0` is preserved.
    start = toFinite(start);
    if (end === undefined) {
      end = start;
      start = 0;
    } else {
      end = toFinite(end);
    }
    step = step === undefined ? start < end ? 1 : -1 : toFinite(step);
    return baseRange(start, end, step, fromRight);
  };
}

/**
 * Creates an array of numbers (positive and/or negative) progressing from
 * `start` up to, but not including, `end`. A step of `-1` is used if a negative
 * `start` is specified without an `end` or `step`. If `end` is not specified,
 * it's set to `start` with `start` then set to `0`.
 *
 * **Note:** JavaScript follows the IEEE-754 standard for resolving
 * floating-point values which can produce unexpected results.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Util
 * @param {number} [start=0] The start of the range.
 * @param {number} end The end of the range.
 * @param {number} [step=1] The value to increment or decrement by.
 * @returns {Array} Returns the range of numbers.
 * @see _.inRange, _.rangeRight
 * @example
 *
 * _.range(4);
 * // => [0, 1, 2, 3]
 *
 * _.range(-4);
 * // => [0, -1, -2, -3]
 *
 * _.range(1, 5);
 * // => [1, 2, 3, 4]
 *
 * _.range(0, 20, 5);
 * // => [0, 5, 10, 15]
 *
 * _.range(0, -4, -1);
 * // => [0, -1, -2, -3]
 *
 * _.range(1, 4, 0);
 * // => [1, 1, 1]
 *
 * _.range(0);
 * // => []
 */
var range = createRange();

/**
 * This method is like `_.range` except that it populates values in
 * descending order.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Util
 * @param {number} [start=0] The start of the range.
 * @param {number} end The end of the range.
 * @param {number} [step=1] The value to increment or decrement by.
 * @returns {Array} Returns the range of numbers.
 * @see _.inRange, _.range
 * @example
 *
 * _.rangeRight(4);
 * // => [3, 2, 1, 0]
 *
 * _.rangeRight(-4);
 * // => [-3, -2, -1, 0]
 *
 * _.rangeRight(1, 5);
 * // => [4, 3, 2, 1]
 *
 * _.rangeRight(0, 20, 5);
 * // => [15, 10, 5, 0]
 *
 * _.rangeRight(0, -4, -1);
 * // => [-3, -2, -1, 0]
 *
 * _.rangeRight(1, 4, 0);
 * // => [1, 1, 1]
 *
 * _.rangeRight(0);
 * // => []
 */
var rangeRight = createRange(true);

/** Used to compose bitmasks for function metadata. */
var WRAP_REARG_FLAG$3 = 256;

/**
 * Creates a function that invokes `func` with arguments arranged according
 * to the specified `indexes` where the argument value at the first index is
 * provided as the first argument, the argument value at the second index is
 * provided as the second argument, and so on.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Function
 * @param {Function} func The function to rearrange arguments for.
 * @param {...(number|number[])} indexes The arranged argument indexes.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var rearged = _.rearg(function(a, b, c) {
 *   return [a, b, c];
 * }, [2, 0, 1]);
 *
 * rearged('b', 'c', 'a')
 * // => ['a', 'b', 'c']
 */
var rearg = flatRest(function (func, indexes) {
  return createWrap(func, WRAP_REARG_FLAG$3, undefined, undefined, undefined, indexes);
});

/**
 * The base implementation of `_.reduce` and `_.reduceRight`, without support
 * for iteratee shorthands, which iterates over `collection` using `eachFunc`.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {*} accumulator The initial value.
 * @param {boolean} initAccum Specify using the first or last element of
 *  `collection` as the initial value.
 * @param {Function} eachFunc The function to iterate over `collection`.
 * @returns {*} Returns the accumulated value.
 */
function baseReduce(collection, iteratee, accumulator, initAccum, eachFunc) {
  eachFunc(collection, function (value, index, collection) {
    accumulator = initAccum ? (initAccum = false, value) : iteratee(accumulator, value, index, collection);
  });
  return accumulator;
}

/**
 * Reduces `collection` to a value which is the accumulated result of running
 * each element in `collection` thru `iteratee`, where each successive
 * invocation is supplied the return value of the previous. If `accumulator`
 * is not given, the first element of `collection` is used as the initial
 * value. The iteratee is invoked with four arguments:
 * (accumulator, value, index|key, collection).
 *
 * Many lodash methods are guarded to work as iteratees for methods like
 * `_.reduce`, `_.reduceRight`, and `_.transform`.
 *
 * The guarded methods are:
 * `assign`, `defaults`, `defaultsDeep`, `includes`, `merge`, `orderBy`,
 * and `sortBy`
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @param {*} [accumulator] The initial value.
 * @returns {*} Returns the accumulated value.
 * @see _.reduceRight
 * @example
 *
 * _.reduce([1, 2], function(sum, n) {
 *   return sum + n;
 * }, 0);
 * // => 3
 *
 * _.reduce({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
 *   (result[value] || (result[value] = [])).push(key);
 *   return result;
 * }, {});
 * // => { '1': ['a', 'c'], '2': ['b'] } (iteration order is not guaranteed)
 */
function reduce(collection, iteratee, accumulator) {
  var func = isArray(collection) ? arrayReduce : baseReduce,
      initAccum = arguments.length < 3;

  return func(collection, baseIteratee(iteratee, 4), accumulator, initAccum, baseEach);
}

/**
 * A specialized version of `_.reduceRight` for arrays without support for
 * iteratee shorthands.
 *
 * @private
 * @param {Array} [array] The array to iterate over.
 * @param {Function} iteratee The function invoked per iteration.
 * @param {*} [accumulator] The initial value.
 * @param {boolean} [initAccum] Specify using the last element of `array` as
 *  the initial value.
 * @returns {*} Returns the accumulated value.
 */
function arrayReduceRight(array, iteratee, accumulator, initAccum) {
  var length = array == null ? 0 : array.length;
  if (initAccum && length) {
    accumulator = array[--length];
  }
  while (length--) {
    accumulator = iteratee(accumulator, array[length], length, array);
  }
  return accumulator;
}

/**
 * This method is like `_.reduce` except that it iterates over elements of
 * `collection` from right to left.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @param {*} [accumulator] The initial value.
 * @returns {*} Returns the accumulated value.
 * @see _.reduce
 * @example
 *
 * var array = [[0, 1], [2, 3], [4, 5]];
 *
 * _.reduceRight(array, function(flattened, other) {
 *   return flattened.concat(other);
 * }, []);
 * // => [4, 5, 2, 3, 0, 1]
 */
function reduceRight(collection, iteratee, accumulator) {
  var func = isArray(collection) ? arrayReduceRight : baseReduce,
      initAccum = arguments.length < 3;

  return func(collection, baseIteratee(iteratee, 4), accumulator, initAccum, baseEachRight);
}

/**
 * The opposite of `_.filter`; this method returns the elements of `collection`
 * that `predicate` does **not** return truthy for.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the new filtered array.
 * @see _.filter
 * @example
 *
 * var users = [
 *   { 'user': 'barney', 'age': 36, 'active': false },
 *   { 'user': 'fred',   'age': 40, 'active': true }
 * ];
 *
 * _.reject(users, function(o) { return !o.active; });
 * // => objects for ['fred']
 *
 * // The `_.matches` iteratee shorthand.
 * _.reject(users, { 'age': 40, 'active': true });
 * // => objects for ['barney']
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.reject(users, ['active', false]);
 * // => objects for ['fred']
 *
 * // The `_.property` iteratee shorthand.
 * _.reject(users, 'active');
 * // => objects for ['barney']
 */
function reject(collection, predicate) {
  var func = isArray(collection) ? arrayFilter : baseFilter;
  return func(collection, negate(baseIteratee(predicate, 3)));
}

/**
 * Removes all elements from `array` that `predicate` returns truthy for
 * and returns an array of the removed elements. The predicate is invoked
 * with three arguments: (value, index, array).
 *
 * **Note:** Unlike `_.filter`, this method mutates `array`. Use `_.pull`
 * to pull elements from an array by value.
 *
 * @static
 * @memberOf _
 * @since 2.0.0
 * @category Array
 * @param {Array} array The array to modify.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the new array of removed elements.
 * @example
 *
 * var array = [1, 2, 3, 4];
 * var evens = _.remove(array, function(n) {
 *   return n % 2 == 0;
 * });
 *
 * console.log(array);
 * // => [1, 3]
 *
 * console.log(evens);
 * // => [2, 4]
 */
function remove(array, predicate) {
  var result = [];
  if (!(array && array.length)) {
    return result;
  }
  var index = -1,
      indexes = [],
      length = array.length;

  predicate = baseIteratee(predicate, 3);
  while (++index < length) {
    var value = array[index];
    if (predicate(value, index, array)) {
      result.push(value);
      indexes.push(index);
    }
  }
  basePullAt(array, indexes);
  return result;
}

/**
 * Repeats the given string `n` times.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to repeat.
 * @param {number} [n=1] The number of times to repeat the string.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {string} Returns the repeated string.
 * @example
 *
 * _.repeat('*', 3);
 * // => '***'
 *
 * _.repeat('abc', 2);
 * // => 'abcabc'
 *
 * _.repeat('abc', 0);
 * // => ''
 */
function repeat(string, n, guard) {
  if (guard ? isIterateeCall(string, n, guard) : n === undefined) {
    n = 1;
  } else {
    n = toInteger(n);
  }
  return baseRepeat(toString(string), n);
}

/**
 * Replaces matches for `pattern` in `string` with `replacement`.
 *
 * **Note:** This method is based on
 * [`String#replace`](https://mdn.io/String/replace).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to modify.
 * @param {RegExp|string} pattern The pattern to replace.
 * @param {Function|string} replacement The match replacement.
 * @returns {string} Returns the modified string.
 * @example
 *
 * _.replace('Hi Fred', 'Fred', 'Barney');
 * // => 'Hi Barney'
 */
function replace() {
  var args = arguments,
      string = toString(args[0]);

  return args.length < 3 ? string : string.replace(args[1], args[2]);
}

/** Error message constants. */
var FUNC_ERROR_TEXT$9 = 'Expected a function';

/**
 * Creates a function that invokes `func` with the `this` binding of the
 * created function and arguments from `start` and beyond provided as
 * an array.
 *
 * **Note:** This method is based on the
 * [rest parameter](https://mdn.io/rest_parameters).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Function
 * @param {Function} func The function to apply a rest parameter to.
 * @param {number} [start=func.length-1] The start position of the rest parameter.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var say = _.rest(function(what, names) {
 *   return what + ' ' + _.initial(names).join(', ') +
 *     (_.size(names) > 1 ? ', & ' : '') + _.last(names);
 * });
 *
 * say('hello', 'fred', 'barney', 'pebbles');
 * // => 'hello fred, barney, & pebbles'
 */
function rest(func, start) {
  if (typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT$9);
  }
  start = start === undefined ? start : toInteger(start);
  return baseRest(func, start);
}

/**
 * This method is like `_.get` except that if the resolved value is a
 * function it's invoked with the `this` binding of its parent object and
 * its result is returned.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Object
 * @param {Object} object The object to query.
 * @param {Array|string} path The path of the property to resolve.
 * @param {*} [defaultValue] The value returned for `undefined` resolved values.
 * @returns {*} Returns the resolved value.
 * @example
 *
 * var object = { 'a': [{ 'b': { 'c1': 3, 'c2': _.constant(4) } }] };
 *
 * _.result(object, 'a[0].b.c1');
 * // => 3
 *
 * _.result(object, 'a[0].b.c2');
 * // => 4
 *
 * _.result(object, 'a[0].b.c3', 'default');
 * // => 'default'
 *
 * _.result(object, 'a[0].b.c3', _.constant('default'));
 * // => 'default'
 */
function result(object, path, defaultValue) {
  path = castPath(path, object);

  var index = -1,
      length = path.length;

  // Ensure the loop is entered when path is empty.
  if (!length) {
    length = 1;
    object = undefined;
  }
  while (++index < length) {
    var value = object == null ? undefined : object[toKey(path[index])];
    if (value === undefined) {
      index = length;
      value = defaultValue;
    }
    object = isFunction(value) ? value.call(object) : value;
  }
  return object;
}

/** Used for built-in method references. */
var arrayProto$4 = Array.prototype;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeReverse = arrayProto$4.reverse;

/**
 * Reverses `array` so that the first element becomes the last, the second
 * element becomes the second to last, and so on.
 *
 * **Note:** This method mutates `array` and is based on
 * [`Array#reverse`](https://mdn.io/Array/reverse).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to modify.
 * @returns {Array} Returns `array`.
 * @example
 *
 * var array = [1, 2, 3];
 *
 * _.reverse(array);
 * // => [3, 2, 1]
 *
 * console.log(array);
 * // => [3, 2, 1]
 */
function reverse(array) {
  return array == null ? array : nativeReverse.call(array);
}

/**
 * Computes `number` rounded to `precision`.
 *
 * @static
 * @memberOf _
 * @since 3.10.0
 * @category Math
 * @param {number} number The number to round.
 * @param {number} [precision=0] The precision to round to.
 * @returns {number} Returns the rounded number.
 * @example
 *
 * _.round(4.006);
 * // => 4
 *
 * _.round(4.006, 2);
 * // => 4.01
 *
 * _.round(4060, -2);
 * // => 4100
 */
var round = createRound('round');

/**
 * A specialized version of `_.sample` for arrays.
 *
 * @private
 * @param {Array} array The array to sample.
 * @returns {*} Returns the random element.
 */
function arraySample(array) {
  var length = array.length;
  return length ? array[baseRandom(0, length - 1)] : undefined;
}

/**
 * The base implementation of `_.sample`.
 *
 * @private
 * @param {Array|Object} collection The collection to sample.
 * @returns {*} Returns the random element.
 */
function baseSample(collection) {
  return arraySample(values(collection));
}

/**
 * Gets a random element from `collection`.
 *
 * @static
 * @memberOf _
 * @since 2.0.0
 * @category Collection
 * @param {Array|Object} collection The collection to sample.
 * @returns {*} Returns the random element.
 * @example
 *
 * _.sample([1, 2, 3, 4]);
 * // => 2
 */
function sample(collection) {
  var func = isArray(collection) ? arraySample : baseSample;
  return func(collection);
}

/**
 * A specialized version of `_.shuffle` which mutates and sets the size of `array`.
 *
 * @private
 * @param {Array} array The array to shuffle.
 * @param {number} [size=array.length] The size of `array`.
 * @returns {Array} Returns `array`.
 */
function shuffleSelf(array, size) {
    var index = -1,
        length = array.length,
        lastIndex = length - 1;

    size = size === undefined ? length : size;
    while (++index < size) {
        var rand = baseRandom(index, lastIndex),
            value = array[rand];

        array[rand] = array[index];
        array[index] = value;
    }
    array.length = size;
    return array;
}

/**
 * A specialized version of `_.sampleSize` for arrays.
 *
 * @private
 * @param {Array} array The array to sample.
 * @param {number} n The number of elements to sample.
 * @returns {Array} Returns the random elements.
 */
function arraySampleSize(array, n) {
  return shuffleSelf(copyArray(array), baseClamp(n, 0, array.length));
}

/**
 * The base implementation of `_.sampleSize` without param guards.
 *
 * @private
 * @param {Array|Object} collection The collection to sample.
 * @param {number} n The number of elements to sample.
 * @returns {Array} Returns the random elements.
 */
function baseSampleSize(collection, n) {
  var array = values(collection);
  return shuffleSelf(array, baseClamp(n, 0, array.length));
}

/**
 * Gets `n` random elements at unique keys from `collection` up to the
 * size of `collection`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Collection
 * @param {Array|Object} collection The collection to sample.
 * @param {number} [n=1] The number of elements to sample.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Array} Returns the random elements.
 * @example
 *
 * _.sampleSize([1, 2, 3], 2);
 * // => [3, 1]
 *
 * _.sampleSize([1, 2, 3], 4);
 * // => [2, 3, 1]
 */
function sampleSize(collection, n, guard) {
  if (guard ? isIterateeCall(collection, n, guard) : n === undefined) {
    n = 1;
  } else {
    n = toInteger(n);
  }
  var func = isArray(collection) ? arraySampleSize : baseSampleSize;
  return func(collection, n);
}

/**
 * Sets the value at `path` of `object`. If a portion of `path` doesn't exist,
 * it's created. Arrays are created for missing index properties while objects
 * are created for all other missing properties. Use `_.setWith` to customize
 * `path` creation.
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 3.7.0
 * @category Object
 * @param {Object} object The object to modify.
 * @param {Array|string} path The path of the property to set.
 * @param {*} value The value to set.
 * @returns {Object} Returns `object`.
 * @example
 *
 * var object = { 'a': [{ 'b': { 'c': 3 } }] };
 *
 * _.set(object, 'a[0].b.c', 4);
 * console.log(object.a[0].b.c);
 * // => 4
 *
 * _.set(object, ['x', '0', 'y', 'z'], 5);
 * console.log(object.x[0].y.z);
 * // => 5
 */
function set$1(object, path, value) {
  return object == null ? object : baseSet(object, path, value);
}

/**
 * This method is like `_.set` except that it accepts `customizer` which is
 * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
 * path creation is handled by the method instead. The `customizer` is invoked
 * with three arguments: (nsValue, key, nsObject).
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The object to modify.
 * @param {Array|string} path The path of the property to set.
 * @param {*} value The value to set.
 * @param {Function} [customizer] The function to customize assigned values.
 * @returns {Object} Returns `object`.
 * @example
 *
 * var object = {};
 *
 * _.setWith(object, '[0][1]', 'a', Object);
 * // => { '0': { '1': 'a' } }
 */
function setWith(object, path, value, customizer) {
  customizer = typeof customizer == 'function' ? customizer : undefined;
  return object == null ? object : baseSet(object, path, value, customizer);
}

/**
 * A specialized version of `_.shuffle` for arrays.
 *
 * @private
 * @param {Array} array The array to shuffle.
 * @returns {Array} Returns the new shuffled array.
 */
function arrayShuffle(array) {
  return shuffleSelf(copyArray(array));
}

/**
 * The base implementation of `_.shuffle`.
 *
 * @private
 * @param {Array|Object} collection The collection to shuffle.
 * @returns {Array} Returns the new shuffled array.
 */
function baseShuffle(collection) {
  return shuffleSelf(values(collection));
}

/**
 * Creates an array of shuffled values, using a version of the
 * [Fisher-Yates shuffle](https://en.wikipedia.org/wiki/Fisher-Yates_shuffle).
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to shuffle.
 * @returns {Array} Returns the new shuffled array.
 * @example
 *
 * _.shuffle([1, 2, 3, 4]);
 * // => [4, 1, 3, 2]
 */
function shuffle(collection) {
  var func = isArray(collection) ? arrayShuffle : baseShuffle;
  return func(collection);
}

/** `Object#toString` result references. */
var mapTag$9 = '[object Map]';
var setTag$9 = '[object Set]';

/**
 * Gets the size of `collection` by returning its length for array-like
 * values or the number of own enumerable string keyed properties for objects.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object|string} collection The collection to inspect.
 * @returns {number} Returns the collection size.
 * @example
 *
 * _.size([1, 2, 3]);
 * // => 3
 *
 * _.size({ 'a': 1, 'b': 2 });
 * // => 2
 *
 * _.size('pebbles');
 * // => 7
 */
function size(collection) {
  if (collection == null) {
    return 0;
  }
  if (isArrayLike(collection)) {
    return isString(collection) ? stringSize(collection) : collection.length;
  }
  var tag = getTag$1(collection);
  if (tag == mapTag$9 || tag == setTag$9) {
    return collection.size;
  }
  return baseKeys(collection).length;
}

/**
 * Creates a slice of `array` from `start` up to, but not including, `end`.
 *
 * **Note:** This method is used instead of
 * [`Array#slice`](https://mdn.io/Array/slice) to ensure dense arrays are
 * returned.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to slice.
 * @param {number} [start=0] The start position.
 * @param {number} [end=array.length] The end position.
 * @returns {Array} Returns the slice of `array`.
 */
function slice(array, start, end) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return [];
  }
  if (end && typeof end != 'number' && isIterateeCall(array, start, end)) {
    start = 0;
    end = length;
  } else {
    start = start == null ? 0 : toInteger(start);
    end = end === undefined ? length : toInteger(end);
  }
  return baseSlice(array, start, end);
}

/**
 * Converts `string` to
 * [snake case](https://en.wikipedia.org/wiki/Snake_case).
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to convert.
 * @returns {string} Returns the snake cased string.
 * @example
 *
 * _.snakeCase('Foo Bar');
 * // => 'foo_bar'
 *
 * _.snakeCase('fooBar');
 * // => 'foo_bar'
 *
 * _.snakeCase('--FOO-BAR--');
 * // => 'foo_bar'
 */
var snakeCase = createCompounder(function (result, word, index) {
  return result + (index ? '_' : '') + word.toLowerCase();
});

/**
 * The base implementation of `_.some` without support for iteratee shorthands.
 *
 * @private
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} predicate The function invoked per iteration.
 * @returns {boolean} Returns `true` if any element passes the predicate check,
 *  else `false`.
 */
function baseSome(collection, predicate) {
  var result;

  baseEach(collection, function (value, index, collection) {
    result = predicate(value, index, collection);
    return !result;
  });
  return !!result;
}

/**
 * Checks if `predicate` returns truthy for **any** element of `collection`.
 * Iteration is stopped once `predicate` returns truthy. The predicate is
 * invoked with three arguments: (value, index|key, collection).
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {boolean} Returns `true` if any element passes the predicate check,
 *  else `false`.
 * @example
 *
 * _.some([null, 0, 'yes', false], Boolean);
 * // => true
 *
 * var users = [
 *   { 'user': 'barney', 'active': true },
 *   { 'user': 'fred',   'active': false }
 * ];
 *
 * // The `_.matches` iteratee shorthand.
 * _.some(users, { 'user': 'barney', 'active': false });
 * // => false
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.some(users, ['active', false]);
 * // => true
 *
 * // The `_.property` iteratee shorthand.
 * _.some(users, 'active');
 * // => true
 */
function some(collection, predicate, guard) {
  var func = isArray(collection) ? arraySome : baseSome;
  if (guard && isIterateeCall(collection, predicate, guard)) {
    predicate = undefined;
  }
  return func(collection, baseIteratee(predicate, 3));
}

/**
 * Creates an array of elements, sorted in ascending order by the results of
 * running each element in a collection thru each iteratee. This method
 * performs a stable sort, that is, it preserves the original sort order of
 * equal elements. The iteratees are invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Collection
 * @param {Array|Object} collection The collection to iterate over.
 * @param {...(Function|Function[])} [iteratees=[_.identity]]
 *  The iteratees to sort by.
 * @returns {Array} Returns the new sorted array.
 * @example
 *
 * var users = [
 *   { 'user': 'fred',   'age': 48 },
 *   { 'user': 'barney', 'age': 36 },
 *   { 'user': 'fred',   'age': 40 },
 *   { 'user': 'barney', 'age': 34 }
 * ];
 *
 * _.sortBy(users, [function(o) { return o.user; }]);
 * // => objects for [['barney', 36], ['barney', 34], ['fred', 48], ['fred', 40]]
 *
 * _.sortBy(users, ['user', 'age']);
 * // => objects for [['barney', 34], ['barney', 36], ['fred', 40], ['fred', 48]]
 */
var sortBy = baseRest(function (collection, iteratees) {
  if (collection == null) {
    return [];
  }
  var length = iteratees.length;
  if (length > 1 && isIterateeCall(collection, iteratees[0], iteratees[1])) {
    iteratees = [];
  } else if (length > 2 && isIterateeCall(iteratees[0], iteratees[1], iteratees[2])) {
    iteratees = [iteratees[0]];
  }
  return baseOrderBy(collection, baseFlatten(iteratees, 1), []);
});

/** Used as references for the maximum length and index of an array. */
var MAX_ARRAY_LENGTH$3 = 4294967295;
var MAX_ARRAY_INDEX = MAX_ARRAY_LENGTH$3 - 1;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeFloor$3 = Math.floor;
var nativeMin$10 = Math.min;

/**
 * The base implementation of `_.sortedIndexBy` and `_.sortedLastIndexBy`
 * which invokes `iteratee` for `value` and each element of `array` to compute
 * their sort ranking. The iteratee is invoked with one argument; (value).
 *
 * @private
 * @param {Array} array The sorted array to inspect.
 * @param {*} value The value to evaluate.
 * @param {Function} iteratee The iteratee invoked per element.
 * @param {boolean} [retHighest] Specify returning the highest qualified index.
 * @returns {number} Returns the index at which `value` should be inserted
 *  into `array`.
 */
function baseSortedIndexBy(array, value, iteratee, retHighest) {
  value = iteratee(value);

  var low = 0,
      high = array == null ? 0 : array.length,
      valIsNaN = value !== value,
      valIsNull = value === null,
      valIsSymbol = isSymbol(value),
      valIsUndefined = value === undefined;

  while (low < high) {
    var mid = nativeFloor$3((low + high) / 2),
        computed = iteratee(array[mid]),
        othIsDefined = computed !== undefined,
        othIsNull = computed === null,
        othIsReflexive = computed === computed,
        othIsSymbol = isSymbol(computed);

    if (valIsNaN) {
      var setLow = retHighest || othIsReflexive;
    } else if (valIsUndefined) {
      setLow = othIsReflexive && (retHighest || othIsDefined);
    } else if (valIsNull) {
      setLow = othIsReflexive && othIsDefined && (retHighest || !othIsNull);
    } else if (valIsSymbol) {
      setLow = othIsReflexive && othIsDefined && !othIsNull && (retHighest || !othIsSymbol);
    } else if (othIsNull || othIsSymbol) {
      setLow = false;
    } else {
      setLow = retHighest ? computed <= value : computed < value;
    }
    if (setLow) {
      low = mid + 1;
    } else {
      high = mid;
    }
  }
  return nativeMin$10(high, MAX_ARRAY_INDEX);
}

/** Used as references for the maximum length and index of an array. */
var MAX_ARRAY_LENGTH$2 = 4294967295;
var HALF_MAX_ARRAY_LENGTH = MAX_ARRAY_LENGTH$2 >>> 1;

/**
 * The base implementation of `_.sortedIndex` and `_.sortedLastIndex` which
 * performs a binary search of `array` to determine the index at which `value`
 * should be inserted into `array` in order to maintain its sort order.
 *
 * @private
 * @param {Array} array The sorted array to inspect.
 * @param {*} value The value to evaluate.
 * @param {boolean} [retHighest] Specify returning the highest qualified index.
 * @returns {number} Returns the index at which `value` should be inserted
 *  into `array`.
 */
function baseSortedIndex(array, value, retHighest) {
  var low = 0,
      high = array == null ? low : array.length;

  if (typeof value == 'number' && value === value && high <= HALF_MAX_ARRAY_LENGTH) {
    while (low < high) {
      var mid = low + high >>> 1,
          computed = array[mid];

      if (computed !== null && !isSymbol(computed) && (retHighest ? computed <= value : computed < value)) {
        low = mid + 1;
      } else {
        high = mid;
      }
    }
    return high;
  }
  return baseSortedIndexBy(array, value, identity, retHighest);
}

/**
 * Uses a binary search to determine the lowest index at which `value`
 * should be inserted into `array` in order to maintain its sort order.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The sorted array to inspect.
 * @param {*} value The value to evaluate.
 * @returns {number} Returns the index at which `value` should be inserted
 *  into `array`.
 * @example
 *
 * _.sortedIndex([30, 50], 40);
 * // => 1
 */
function sortedIndex(array, value) {
  return baseSortedIndex(array, value);
}

/**
 * This method is like `_.sortedIndex` except that it accepts `iteratee`
 * which is invoked for `value` and each element of `array` to compute their
 * sort ranking. The iteratee is invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The sorted array to inspect.
 * @param {*} value The value to evaluate.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {number} Returns the index at which `value` should be inserted
 *  into `array`.
 * @example
 *
 * var objects = [{ 'x': 4 }, { 'x': 5 }];
 *
 * _.sortedIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
 * // => 0
 *
 * // The `_.property` iteratee shorthand.
 * _.sortedIndexBy(objects, { 'x': 4 }, 'x');
 * // => 0
 */
function sortedIndexBy(array, value, iteratee) {
  return baseSortedIndexBy(array, value, baseIteratee(iteratee, 2));
}

/**
 * This method is like `_.indexOf` except that it performs a binary
 * search on a sorted `array`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {*} value The value to search for.
 * @returns {number} Returns the index of the matched value, else `-1`.
 * @example
 *
 * _.sortedIndexOf([4, 5, 5, 5, 6], 5);
 * // => 1
 */
function sortedIndexOf(array, value) {
  var length = array == null ? 0 : array.length;
  if (length) {
    var index = baseSortedIndex(array, value);
    if (index < length && eq(array[index], value)) {
      return index;
    }
  }
  return -1;
}

/**
 * This method is like `_.sortedIndex` except that it returns the highest
 * index at which `value` should be inserted into `array` in order to
 * maintain its sort order.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The sorted array to inspect.
 * @param {*} value The value to evaluate.
 * @returns {number} Returns the index at which `value` should be inserted
 *  into `array`.
 * @example
 *
 * _.sortedLastIndex([4, 5, 5, 5, 6], 5);
 * // => 4
 */
function sortedLastIndex(array, value) {
  return baseSortedIndex(array, value, true);
}

/**
 * This method is like `_.sortedLastIndex` except that it accepts `iteratee`
 * which is invoked for `value` and each element of `array` to compute their
 * sort ranking. The iteratee is invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The sorted array to inspect.
 * @param {*} value The value to evaluate.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {number} Returns the index at which `value` should be inserted
 *  into `array`.
 * @example
 *
 * var objects = [{ 'x': 4 }, { 'x': 5 }];
 *
 * _.sortedLastIndexBy(objects, { 'x': 4 }, function(o) { return o.x; });
 * // => 1
 *
 * // The `_.property` iteratee shorthand.
 * _.sortedLastIndexBy(objects, { 'x': 4 }, 'x');
 * // => 1
 */
function sortedLastIndexBy(array, value, iteratee) {
  return baseSortedIndexBy(array, value, baseIteratee(iteratee, 2), true);
}

/**
 * This method is like `_.lastIndexOf` except that it performs a binary
 * search on a sorted `array`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {*} value The value to search for.
 * @returns {number} Returns the index of the matched value, else `-1`.
 * @example
 *
 * _.sortedLastIndexOf([4, 5, 5, 5, 6], 5);
 * // => 3
 */
function sortedLastIndexOf(array, value) {
  var length = array == null ? 0 : array.length;
  if (length) {
    var index = baseSortedIndex(array, value, true) - 1;
    if (eq(array[index], value)) {
      return index;
    }
  }
  return -1;
}

/**
 * The base implementation of `_.sortedUniq` and `_.sortedUniqBy` without
 * support for iteratee shorthands.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {Function} [iteratee] The iteratee invoked per element.
 * @returns {Array} Returns the new duplicate free array.
 */
function baseSortedUniq(array, iteratee) {
  var index = -1,
      length = array.length,
      resIndex = 0,
      result = [];

  while (++index < length) {
    var value = array[index],
        computed = iteratee ? iteratee(value) : value;

    if (!index || !eq(computed, seen)) {
      var seen = computed;
      result[resIndex++] = value === 0 ? 0 : value;
    }
  }
  return result;
}

/**
 * This method is like `_.uniq` except that it's designed and optimized
 * for sorted arrays.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @returns {Array} Returns the new duplicate free array.
 * @example
 *
 * _.sortedUniq([1, 1, 2]);
 * // => [1, 2]
 */
function sortedUniq(array) {
  return array && array.length ? baseSortedUniq(array) : [];
}

/**
 * This method is like `_.uniqBy` except that it's designed and optimized
 * for sorted arrays.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {Function} [iteratee] The iteratee invoked per element.
 * @returns {Array} Returns the new duplicate free array.
 * @example
 *
 * _.sortedUniqBy([1.1, 1.2, 2.3, 2.4], Math.floor);
 * // => [1.1, 2.3]
 */
function sortedUniqBy(array, iteratee) {
  return array && array.length ? baseSortedUniq(array, baseIteratee(iteratee, 2)) : [];
}

/** Used as references for the maximum length and index of an array. */
var MAX_ARRAY_LENGTH$4 = 4294967295;

/**
 * Splits `string` by `separator`.
 *
 * **Note:** This method is based on
 * [`String#split`](https://mdn.io/String/split).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to split.
 * @param {RegExp|string} separator The separator pattern to split by.
 * @param {number} [limit] The length to truncate results to.
 * @returns {Array} Returns the string segments.
 * @example
 *
 * _.split('a-b-c', '-', 2);
 * // => ['a', 'b']
 */
function split(string, separator, limit) {
  if (limit && typeof limit != 'number' && isIterateeCall(string, separator, limit)) {
    separator = limit = undefined;
  }
  limit = limit === undefined ? MAX_ARRAY_LENGTH$4 : limit >>> 0;
  if (!limit) {
    return [];
  }
  string = toString(string);
  if (string && (typeof separator == 'string' || separator != null && !isRegExp(separator))) {
    separator = baseToString(separator);
    if (!separator && hasUnicode(string)) {
      return castSlice(stringToArray(string), 0, limit);
    }
  }
  return string.split(separator, limit);
}

/** Error message constants. */
var FUNC_ERROR_TEXT$10 = 'Expected a function';

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$13 = Math.max;

/**
 * Creates a function that invokes `func` with the `this` binding of the
 * create function and an array of arguments much like
 * [`Function#apply`](http://www.ecma-international.org/ecma-262/7.0/#sec-function.prototype.apply).
 *
 * **Note:** This method is based on the
 * [spread operator](https://mdn.io/spread_operator).
 *
 * @static
 * @memberOf _
 * @since 3.2.0
 * @category Function
 * @param {Function} func The function to spread arguments over.
 * @param {number} [start=0] The start position of the spread.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var say = _.spread(function(who, what) {
 *   return who + ' says ' + what;
 * });
 *
 * say(['fred', 'hello']);
 * // => 'fred says hello'
 *
 * var numbers = Promise.all([
 *   Promise.resolve(40),
 *   Promise.resolve(36)
 * ]);
 *
 * numbers.then(_.spread(function(x, y) {
 *   return x + y;
 * }));
 * // => a Promise of 76
 */
function spread(func, start) {
  if (typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT$10);
  }
  start = start == null ? 0 : nativeMax$13(toInteger(start), 0);
  return baseRest(function (args) {
    var array = args[start],
        otherArgs = castSlice(args, 0, start);

    if (array) {
      arrayPush(otherArgs, array);
    }
    return apply(func, this, otherArgs);
  });
}

/**
 * Converts `string` to
 * [start case](https://en.wikipedia.org/wiki/Letter_case#Stylistic_or_specialised_usage).
 *
 * @static
 * @memberOf _
 * @since 3.1.0
 * @category String
 * @param {string} [string=''] The string to convert.
 * @returns {string} Returns the start cased string.
 * @example
 *
 * _.startCase('--foo-bar--');
 * // => 'Foo Bar'
 *
 * _.startCase('fooBar');
 * // => 'Foo Bar'
 *
 * _.startCase('__FOO_BAR__');
 * // => 'FOO BAR'
 */
var startCase = createCompounder(function (result, word, index) {
  return result + (index ? ' ' : '') + upperFirst(word);
});

/**
 * Checks if `string` starts with the given target string.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to inspect.
 * @param {string} [target] The string to search for.
 * @param {number} [position=0] The position to search from.
 * @returns {boolean} Returns `true` if `string` starts with `target`,
 *  else `false`.
 * @example
 *
 * _.startsWith('abc', 'a');
 * // => true
 *
 * _.startsWith('abc', 'b');
 * // => false
 *
 * _.startsWith('abc', 'b', 1);
 * // => true
 */
function startsWith(string, target, position) {
  string = toString(string);
  position = position == null ? 0 : baseClamp(toInteger(position), 0, string.length);

  target = baseToString(target);
  return string.slice(position, position + target.length) == target;
}

/**
 * This method returns a new empty object.
 *
 * @static
 * @memberOf _
 * @since 4.13.0
 * @category Util
 * @returns {Object} Returns the new empty object.
 * @example
 *
 * var objects = _.times(2, _.stubObject);
 *
 * console.log(objects);
 * // => [{}, {}]
 *
 * console.log(objects[0] === objects[1]);
 * // => false
 */
function stubObject() {
  return {};
}

/**
 * This method returns an empty string.
 *
 * @static
 * @memberOf _
 * @since 4.13.0
 * @category Util
 * @returns {string} Returns the empty string.
 * @example
 *
 * _.times(2, _.stubString);
 * // => ['', '']
 */
function stubString() {
  return '';
}

/**
 * This method returns `true`.
 *
 * @static
 * @memberOf _
 * @since 4.13.0
 * @category Util
 * @returns {boolean} Returns `true`.
 * @example
 *
 * _.times(2, _.stubTrue);
 * // => [true, true]
 */
function stubTrue() {
  return true;
}

/**
 * Subtract two numbers.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Math
 * @param {number} minuend The first number in a subtraction.
 * @param {number} subtrahend The second number in a subtraction.
 * @returns {number} Returns the difference.
 * @example
 *
 * _.subtract(6, 4);
 * // => 2
 */
var subtract = createMathOperation(function (minuend, subtrahend) {
  return minuend - subtrahend;
}, 0);

/**
 * Computes the sum of the values in `array`.
 *
 * @static
 * @memberOf _
 * @since 3.4.0
 * @category Math
 * @param {Array} array The array to iterate over.
 * @returns {number} Returns the sum.
 * @example
 *
 * _.sum([4, 2, 8, 6]);
 * // => 20
 */
function sum(array) {
  return array && array.length ? baseSum(array, identity) : 0;
}

/**
 * This method is like `_.sum` except that it accepts `iteratee` which is
 * invoked for each element in `array` to generate the value to be summed.
 * The iteratee is invoked with one argument: (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Math
 * @param {Array} array The array to iterate over.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {number} Returns the sum.
 * @example
 *
 * var objects = [{ 'n': 4 }, { 'n': 2 }, { 'n': 8 }, { 'n': 6 }];
 *
 * _.sumBy(objects, function(o) { return o.n; });
 * // => 20
 *
 * // The `_.property` iteratee shorthand.
 * _.sumBy(objects, 'n');
 * // => 20
 */
function sumBy(array, iteratee) {
  return array && array.length ? baseSum(array, baseIteratee(iteratee, 2)) : 0;
}

/**
 * Gets all but the first element of `array`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to query.
 * @returns {Array} Returns the slice of `array`.
 * @example
 *
 * _.tail([1, 2, 3]);
 * // => [2, 3]
 */
function tail(array) {
  var length = array == null ? 0 : array.length;
  return length ? baseSlice(array, 1, length) : [];
}

/**
 * Creates a slice of `array` with `n` elements taken from the beginning.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The array to query.
 * @param {number} [n=1] The number of elements to take.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Array} Returns the slice of `array`.
 * @example
 *
 * _.take([1, 2, 3]);
 * // => [1]
 *
 * _.take([1, 2, 3], 2);
 * // => [1, 2]
 *
 * _.take([1, 2, 3], 5);
 * // => [1, 2, 3]
 *
 * _.take([1, 2, 3], 0);
 * // => []
 */
function take(array, n, guard) {
  if (!(array && array.length)) {
    return [];
  }
  n = guard || n === undefined ? 1 : toInteger(n);
  return baseSlice(array, 0, n < 0 ? 0 : n);
}

/**
 * Creates a slice of `array` with `n` elements taken from the end.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to query.
 * @param {number} [n=1] The number of elements to take.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Array} Returns the slice of `array`.
 * @example
 *
 * _.takeRight([1, 2, 3]);
 * // => [3]
 *
 * _.takeRight([1, 2, 3], 2);
 * // => [2, 3]
 *
 * _.takeRight([1, 2, 3], 5);
 * // => [1, 2, 3]
 *
 * _.takeRight([1, 2, 3], 0);
 * // => []
 */
function takeRight(array, n, guard) {
  var length = array == null ? 0 : array.length;
  if (!length) {
    return [];
  }
  n = guard || n === undefined ? 1 : toInteger(n);
  n = length - n;
  return baseSlice(array, n < 0 ? 0 : n, length);
}

/**
 * Creates a slice of `array` with elements taken from the end. Elements are
 * taken until `predicate` returns falsey. The predicate is invoked with
 * three arguments: (value, index, array).
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to query.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the slice of `array`.
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'active': true },
 *   { 'user': 'fred',    'active': false },
 *   { 'user': 'pebbles', 'active': false }
 * ];
 *
 * _.takeRightWhile(users, function(o) { return !o.active; });
 * // => objects for ['fred', 'pebbles']
 *
 * // The `_.matches` iteratee shorthand.
 * _.takeRightWhile(users, { 'user': 'pebbles', 'active': false });
 * // => objects for ['pebbles']
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.takeRightWhile(users, ['active', false]);
 * // => objects for ['fred', 'pebbles']
 *
 * // The `_.property` iteratee shorthand.
 * _.takeRightWhile(users, 'active');
 * // => []
 */
function takeRightWhile(array, predicate) {
  return array && array.length ? baseWhile(array, baseIteratee(predicate, 3), false, true) : [];
}

/**
 * Creates a slice of `array` with elements taken from the beginning. Elements
 * are taken until `predicate` returns falsey. The predicate is invoked with
 * three arguments: (value, index, array).
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Array
 * @param {Array} array The array to query.
 * @param {Function} [predicate=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the slice of `array`.
 * @example
 *
 * var users = [
 *   { 'user': 'barney',  'active': false },
 *   { 'user': 'fred',    'active': false },
 *   { 'user': 'pebbles', 'active': true }
 * ];
 *
 * _.takeWhile(users, function(o) { return !o.active; });
 * // => objects for ['barney', 'fred']
 *
 * // The `_.matches` iteratee shorthand.
 * _.takeWhile(users, { 'user': 'barney', 'active': false });
 * // => objects for ['barney']
 *
 * // The `_.matchesProperty` iteratee shorthand.
 * _.takeWhile(users, ['active', false]);
 * // => objects for ['barney', 'fred']
 *
 * // The `_.property` iteratee shorthand.
 * _.takeWhile(users, 'active');
 * // => []
 */
function takeWhile(array, predicate) {
  return array && array.length ? baseWhile(array, baseIteratee(predicate, 3)) : [];
}

/**
 * This method invokes `interceptor` and returns `value`. The interceptor
 * is invoked with one argument; (value). The purpose of this method is to
 * "tap into" a method chain sequence in order to modify intermediate results.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Seq
 * @param {*} value The value to provide to `interceptor`.
 * @param {Function} interceptor The function to invoke.
 * @returns {*} Returns `value`.
 * @example
 *
 * _([1, 2, 3])
 *  .tap(function(array) {
 *    // Mutate input array.
 *    array.pop();
 *  })
 *  .reverse()
 *  .value();
 * // => [2, 1]
 */
function tap(value, interceptor) {
  interceptor(value);
  return value;
}

/** Used to escape characters for inclusion in compiled string literals. */
var stringEscapes = {
  '\\': '\\',
  "'": "'",
  '\n': 'n',
  '\r': 'r',
  '\u2028': 'u2028',
  '\u2029': 'u2029'
};

/**
 * Used by `_.template` to escape characters for inclusion in compiled string literals.
 *
 * @private
 * @param {string} chr The matched character to escape.
 * @returns {string} Returns the escaped character.
 */
function escapeStringChar(chr) {
  return '\\' + stringEscapes[chr];
}

/** Used to match template delimiters. */
var reInterpolate = /<%=([\s\S]+?)%>/g;

/** Used to match template delimiters. */
var reEscape = /<%-([\s\S]+?)%>/g;

/** Used to match template delimiters. */
var reEvaluate = /<%([\s\S]+?)%>/g;

/**
 * By default, the template delimiters used by lodash are like those in
 * embedded Ruby (ERB) as well as ES2015 template strings. Change the
 * following template settings to use alternative delimiters.
 *
 * @static
 * @memberOf _
 * @type {Object}
 */
var templateSettings = {

  /**
   * Used to detect `data` property values to be HTML-escaped.
   *
   * @memberOf _.templateSettings
   * @type {RegExp}
   */
  'escape': reEscape,

  /**
   * Used to detect code to be evaluated.
   *
   * @memberOf _.templateSettings
   * @type {RegExp}
   */
  'evaluate': reEvaluate,

  /**
   * Used to detect `data` property values to inject.
   *
   * @memberOf _.templateSettings
   * @type {RegExp}
   */
  'interpolate': reInterpolate,

  /**
   * Used to reference the data object in the template text.
   *
   * @memberOf _.templateSettings
   * @type {string}
   */
  'variable': '',

  /**
   * Used to import variables into the compiled template.
   *
   * @memberOf _.templateSettings
   * @type {Object}
   */
  'imports': {

    /**
     * A reference to the `lodash` function.
     *
     * @memberOf _.templateSettings.imports
     * @type {Function}
     */
    '_': { 'escape': escape }
  }
};

/** Used to match empty string literals in compiled template source. */
var reEmptyStringLeading = /\b__p \+= '';/g;
var reEmptyStringMiddle = /\b(__p \+=) '' \+/g;
var reEmptyStringTrailing = /(__e\(.*?\)|\b__t\)) \+\n'';/g;

/**
 * Used to match
 * [ES template delimiters](http://ecma-international.org/ecma-262/7.0/#sec-template-literal-lexical-components).
 */
var reEsTemplate = /\$\{([^\\}]*(?:\\.[^\\}]*)*)\}/g;

/** Used to ensure capturing order of template delimiters. */
var reNoMatch = /($^)/;

/** Used to match unescaped characters in compiled string literals. */
var reUnescapedString = /['\n\r\u2028\u2029\\]/g;

/**
 * Creates a compiled template function that can interpolate data properties
 * in "interpolate" delimiters, HTML-escape interpolated data properties in
 * "escape" delimiters, and execute JavaScript in "evaluate" delimiters. Data
 * properties may be accessed as free variables in the template. If a setting
 * object is given, it takes precedence over `_.templateSettings` values.
 *
 * **Note:** In the development build `_.template` utilizes
 * [sourceURLs](http://www.html5rocks.com/en/tutorials/developertools/sourcemaps/#toc-sourceurl)
 * for easier debugging.
 *
 * For more information on precompiling templates see
 * [lodash's custom builds documentation](https://lodash.com/custom-builds).
 *
 * For more information on Chrome extension sandboxes see
 * [Chrome's extensions documentation](https://developer.chrome.com/extensions/sandboxingEval).
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category String
 * @param {string} [string=''] The template string.
 * @param {Object} [options={}] The options object.
 * @param {RegExp} [options.escape=_.templateSettings.escape]
 *  The HTML "escape" delimiter.
 * @param {RegExp} [options.evaluate=_.templateSettings.evaluate]
 *  The "evaluate" delimiter.
 * @param {Object} [options.imports=_.templateSettings.imports]
 *  An object to import into the template as free variables.
 * @param {RegExp} [options.interpolate=_.templateSettings.interpolate]
 *  The "interpolate" delimiter.
 * @param {string} [options.sourceURL='templateSources[n]']
 *  The sourceURL of the compiled template.
 * @param {string} [options.variable='obj']
 *  The data object variable name.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {Function} Returns the compiled template function.
 * @example
 *
 * // Use the "interpolate" delimiter to create a compiled template.
 * var compiled = _.template('hello <%= user %>!');
 * compiled({ 'user': 'fred' });
 * // => 'hello fred!'
 *
 * // Use the HTML "escape" delimiter to escape data property values.
 * var compiled = _.template('<b><%- value %></b>');
 * compiled({ 'value': '<script>' });
 * // => '<b>&lt;script&gt;</b>'
 *
 * // Use the "evaluate" delimiter to execute JavaScript and generate HTML.
 * var compiled = _.template('<% _.forEach(users, function(user) { %><li><%- user %></li><% }); %>');
 * compiled({ 'users': ['fred', 'barney'] });
 * // => '<li>fred</li><li>barney</li>'
 *
 * // Use the internal `print` function in "evaluate" delimiters.
 * var compiled = _.template('<% print("hello " + user); %>!');
 * compiled({ 'user': 'barney' });
 * // => 'hello barney!'
 *
 * // Use the ES template literal delimiter as an "interpolate" delimiter.
 * // Disable support by replacing the "interpolate" delimiter.
 * var compiled = _.template('hello ${ user }!');
 * compiled({ 'user': 'pebbles' });
 * // => 'hello pebbles!'
 *
 * // Use backslashes to treat delimiters as plain text.
 * var compiled = _.template('<%= "\\<%- value %\\>" %>');
 * compiled({ 'value': 'ignored' });
 * // => '<%- value %>'
 *
 * // Use the `imports` option to import `jQuery` as `jq`.
 * var text = '<% jq.each(users, function(user) { %><li><%- user %></li><% }); %>';
 * var compiled = _.template(text, { 'imports': { 'jq': jQuery } });
 * compiled({ 'users': ['fred', 'barney'] });
 * // => '<li>fred</li><li>barney</li>'
 *
 * // Use the `sourceURL` option to specify a custom sourceURL for the template.
 * var compiled = _.template('hello <%= user %>!', { 'sourceURL': '/basic/greeting.jst' });
 * compiled(data);
 * // => Find the source of "greeting.jst" under the Sources tab or Resources panel of the web inspector.
 *
 * // Use the `variable` option to ensure a with-statement isn't used in the compiled template.
 * var compiled = _.template('hi <%= data.user %>!', { 'variable': 'data' });
 * compiled.source;
 * // => function(data) {
 * //   var __t, __p = '';
 * //   __p += 'hi ' + ((__t = ( data.user )) == null ? '' : __t) + '!';
 * //   return __p;
 * // }
 *
 * // Use custom template delimiters.
 * _.templateSettings.interpolate = /{{([\s\S]+?)}}/g;
 * var compiled = _.template('hello {{ user }}!');
 * compiled({ 'user': 'mustache' });
 * // => 'hello mustache!'
 *
 * // Use the `source` property to inline compiled templates for meaningful
 * // line numbers in error messages and stack traces.
 * fs.writeFileSync(path.join(process.cwd(), 'jst.js'), '\
 *   var JST = {\
 *     "main": ' + _.template(mainText).source + '\
 *   };\
 * ');
 */
function template(string, options, guard) {
  // Based on John Resig's `tmpl` implementation
  // (http://ejohn.org/blog/javascript-micro-templating/)
  // and Laura Doktorova's doT.js (https://github.com/olado/doT).
  var settings = templateSettings.imports._.templateSettings || templateSettings;

  if (guard && isIterateeCall(string, options, guard)) {
    options = undefined;
  }
  string = toString(string);
  options = assignInWith({}, options, settings, customDefaultsAssignIn);

  var imports = assignInWith({}, options.imports, settings.imports, customDefaultsAssignIn),
      importsKeys = keys(imports),
      importsValues = baseValues(imports, importsKeys);

  var isEscaping,
      isEvaluating,
      index = 0,
      interpolate = options.interpolate || reNoMatch,
      source = "__p += '";

  // Compile the regexp to match each delimiter.
  var reDelimiters = RegExp((options.escape || reNoMatch).source + '|' + interpolate.source + '|' + (interpolate === reInterpolate ? reEsTemplate : reNoMatch).source + '|' + (options.evaluate || reNoMatch).source + '|$', 'g');

  // Use a sourceURL for easier debugging.
  var sourceURL = 'sourceURL' in options ? '//# sourceURL=' + options.sourceURL + '\n' : '';

  string.replace(reDelimiters, function (match, escapeValue, interpolateValue, esTemplateValue, evaluateValue, offset) {
    interpolateValue || (interpolateValue = esTemplateValue);

    // Escape characters that can't be included in string literals.
    source += string.slice(index, offset).replace(reUnescapedString, escapeStringChar);

    // Replace delimiters with snippets.
    if (escapeValue) {
      isEscaping = true;
      source += "' +\n__e(" + escapeValue + ") +\n'";
    }
    if (evaluateValue) {
      isEvaluating = true;
      source += "';\n" + evaluateValue + ";\n__p += '";
    }
    if (interpolateValue) {
      source += "' +\n((__t = (" + interpolateValue + ")) == null ? '' : __t) +\n'";
    }
    index = offset + match.length;

    // The JS engine embedded in Adobe products needs `match` returned in
    // order to produce the correct `offset` value.
    return match;
  });

  source += "';\n";

  // If `variable` is not specified wrap a with-statement around the generated
  // code to add the data object to the top of the scope chain.
  var variable = options.variable;
  if (!variable) {
    source = 'with (obj) {\n' + source + '\n}\n';
  }
  // Cleanup code by stripping empty strings.
  source = (isEvaluating ? source.replace(reEmptyStringLeading, '') : source).replace(reEmptyStringMiddle, '$1').replace(reEmptyStringTrailing, '$1;');

  // Frame code as the function body.
  source = 'function(' + (variable || 'obj') + ') {\n' + (variable ? '' : 'obj || (obj = {});\n') + "var __t, __p = ''" + (isEscaping ? ', __e = _.escape' : '') + (isEvaluating ? ', __j = Array.prototype.join;\n' + "function print() { __p += __j.call(arguments, '') }\n" : ';\n') + source + 'return __p\n}';

  var result = attempt(function () {
    return Function(importsKeys, sourceURL + 'return ' + source).apply(undefined, importsValues);
  });

  // Provide the compiled function's source by its `toString` method or
  // the `source` property as a convenience for inlining compiled templates.
  result.source = source;
  if (isError(result)) {
    throw result;
  }
  return result;
}

/** Error message constants. */
var FUNC_ERROR_TEXT$11 = 'Expected a function';

/**
 * Creates a throttled function that only invokes `func` at most once per
 * every `wait` milliseconds. The throttled function comes with a `cancel`
 * method to cancel delayed `func` invocations and a `flush` method to
 * immediately invoke them. Provide `options` to indicate whether `func`
 * should be invoked on the leading and/or trailing edge of the `wait`
 * timeout. The `func` is invoked with the last arguments provided to the
 * throttled function. Subsequent calls to the throttled function return the
 * result of the last `func` invocation.
 *
 * **Note:** If `leading` and `trailing` options are `true`, `func` is
 * invoked on the trailing edge of the timeout only if the throttled function
 * is invoked more than once during the `wait` timeout.
 *
 * If `wait` is `0` and `leading` is `false`, `func` invocation is deferred
 * until to the next tick, similar to `setTimeout` with a timeout of `0`.
 *
 * See [David Corbacho's article](https://css-tricks.com/debouncing-throttling-explained-examples/)
 * for details over the differences between `_.throttle` and `_.debounce`.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {Function} func The function to throttle.
 * @param {number} [wait=0] The number of milliseconds to throttle invocations to.
 * @param {Object} [options={}] The options object.
 * @param {boolean} [options.leading=true]
 *  Specify invoking on the leading edge of the timeout.
 * @param {boolean} [options.trailing=true]
 *  Specify invoking on the trailing edge of the timeout.
 * @returns {Function} Returns the new throttled function.
 * @example
 *
 * // Avoid excessively updating the position while scrolling.
 * jQuery(window).on('scroll', _.throttle(updatePosition, 100));
 *
 * // Invoke `renewToken` when the click event is fired, but not more than once every 5 minutes.
 * var throttled = _.throttle(renewToken, 300000, { 'trailing': false });
 * jQuery(element).on('click', throttled);
 *
 * // Cancel the trailing throttled invocation.
 * jQuery(window).on('popstate', throttled.cancel);
 */
function throttle(func, wait, options) {
  var leading = true,
      trailing = true;

  if (typeof func != 'function') {
    throw new TypeError(FUNC_ERROR_TEXT$11);
  }
  if (isObject(options)) {
    leading = 'leading' in options ? !!options.leading : leading;
    trailing = 'trailing' in options ? !!options.trailing : trailing;
  }
  return debounce(func, wait, {
    'leading': leading,
    'maxWait': wait,
    'trailing': trailing
  });
}

/**
 * This method is like `_.tap` except that it returns the result of `interceptor`.
 * The purpose of this method is to "pass thru" values replacing intermediate
 * results in a method chain sequence.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Seq
 * @param {*} value The value to provide to `interceptor`.
 * @param {Function} interceptor The function to invoke.
 * @returns {*} Returns the result of `interceptor`.
 * @example
 *
 * _('  abc  ')
 *  .chain()
 *  .trim()
 *  .thru(function(value) {
 *    return [value];
 *  })
 *  .value();
 * // => ['abc']
 */
function thru(value, interceptor) {
  return interceptor(value);
}

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER$4 = 9007199254740991;

/** Used as references for the maximum length and index of an array. */
var MAX_ARRAY_LENGTH$5 = 4294967295;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMin$11 = Math.min;

/**
 * Invokes the iteratee `n` times, returning an array of the results of
 * each invocation. The iteratee is invoked with one argument; (index).
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Util
 * @param {number} n The number of times to invoke `iteratee`.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @returns {Array} Returns the array of results.
 * @example
 *
 * _.times(3, String);
 * // => ['0', '1', '2']
 *
 *  _.times(4, _.constant(0));
 * // => [0, 0, 0, 0]
 */
function times(n, iteratee) {
  n = toInteger(n);
  if (n < 1 || n > MAX_SAFE_INTEGER$4) {
    return [];
  }
  var index = MAX_ARRAY_LENGTH$5,
      length = nativeMin$11(n, MAX_ARRAY_LENGTH$5);

  iteratee = castFunction(iteratee);
  n -= MAX_ARRAY_LENGTH$5;

  var result = baseTimes(length, iteratee);
  while (++index < n) {
    iteratee(index);
  }
  return result;
}

/**
 * Enables the wrapper to be iterable.
 *
 * @name Symbol.iterator
 * @memberOf _
 * @since 4.0.0
 * @category Seq
 * @returns {Object} Returns the wrapper object.
 * @example
 *
 * var wrapped = _([1, 2]);
 *
 * wrapped[Symbol.iterator]() === wrapped;
 * // => true
 *
 * Array.from(wrapped);
 * // => [1, 2]
 */
function wrapperToIterator() {
  return this;
}

/**
 * The base implementation of `wrapperValue` which returns the result of
 * performing a sequence of actions on the unwrapped `value`, where each
 * successive action is supplied the return value of the previous.
 *
 * @private
 * @param {*} value The unwrapped value.
 * @param {Array} actions Actions to perform to resolve the unwrapped value.
 * @returns {*} Returns the resolved value.
 */
function baseWrapperValue(value, actions) {
  var result = value;
  if (result instanceof LazyWrapper) {
    result = result.value();
  }
  return arrayReduce(actions, function (result, action) {
    return action.func.apply(action.thisArg, arrayPush([result], action.args));
  }, result);
}

/**
 * Executes the chain sequence to resolve the unwrapped value.
 *
 * @name value
 * @memberOf _
 * @since 0.1.0
 * @alias toJSON, valueOf
 * @category Seq
 * @returns {*} Returns the resolved unwrapped value.
 * @example
 *
 * _([1, 2, 3]).value();
 * // => [1, 2, 3]
 */
function wrapperValue() {
  return baseWrapperValue(this.__wrapped__, this.__actions__);
}

/**
 * Converts `string`, as a whole, to lower case just like
 * [String#toLowerCase](https://mdn.io/toLowerCase).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to convert.
 * @returns {string} Returns the lower cased string.
 * @example
 *
 * _.toLower('--Foo-Bar--');
 * // => '--foo-bar--'
 *
 * _.toLower('fooBar');
 * // => 'foobar'
 *
 * _.toLower('__FOO_BAR__');
 * // => '__foo_bar__'
 */
function toLower(value) {
  return toString(value).toLowerCase();
}

/**
 * Converts `value` to a property path array.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Util
 * @param {*} value The value to convert.
 * @returns {Array} Returns the new property path array.
 * @example
 *
 * _.toPath('a.b.c');
 * // => ['a', 'b', 'c']
 *
 * _.toPath('a[0].b.c');
 * // => ['a', '0', 'b', 'c']
 */
function toPath(value) {
  if (isArray(value)) {
    return arrayMap(value, toKey);
  }
  return isSymbol(value) ? [value] : copyArray(stringToPath(toString(value)));
}

/** Used as references for various `Number` constants. */
var MAX_SAFE_INTEGER$5 = 9007199254740991;

/**
 * Converts `value` to a safe integer. A safe integer can be compared and
 * represented correctly.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Lang
 * @param {*} value The value to convert.
 * @returns {number} Returns the converted integer.
 * @example
 *
 * _.toSafeInteger(3.2);
 * // => 3
 *
 * _.toSafeInteger(Number.MIN_VALUE);
 * // => 0
 *
 * _.toSafeInteger(Infinity);
 * // => 9007199254740991
 *
 * _.toSafeInteger('3.2');
 * // => 3
 */
function toSafeInteger(value) {
  return value ? baseClamp(toInteger(value), -MAX_SAFE_INTEGER$5, MAX_SAFE_INTEGER$5) : value === 0 ? value : 0;
}

/**
 * Converts `string`, as a whole, to upper case just like
 * [String#toUpperCase](https://mdn.io/toUpperCase).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to convert.
 * @returns {string} Returns the upper cased string.
 * @example
 *
 * _.toUpper('--foo-bar--');
 * // => '--FOO-BAR--'
 *
 * _.toUpper('fooBar');
 * // => 'FOOBAR'
 *
 * _.toUpper('__foo_bar__');
 * // => '__FOO_BAR__'
 */
function toUpper(value) {
  return toString(value).toUpperCase();
}

/**
 * An alternative to `_.reduce`; this method transforms `object` to a new
 * `accumulator` object which is the result of running each of its own
 * enumerable string keyed properties thru `iteratee`, with each invocation
 * potentially mutating the `accumulator` object. If `accumulator` is not
 * provided, a new object with the same `[[Prototype]]` will be used. The
 * iteratee is invoked with four arguments: (accumulator, value, key, object).
 * Iteratee functions may exit iteration early by explicitly returning `false`.
 *
 * @static
 * @memberOf _
 * @since 1.3.0
 * @category Object
 * @param {Object} object The object to iterate over.
 * @param {Function} [iteratee=_.identity] The function invoked per iteration.
 * @param {*} [accumulator] The custom accumulator value.
 * @returns {*} Returns the accumulated value.
 * @example
 *
 * _.transform([2, 3, 4], function(result, n) {
 *   result.push(n *= n);
 *   return n % 2 == 0;
 * }, []);
 * // => [4, 9]
 *
 * _.transform({ 'a': 1, 'b': 2, 'c': 1 }, function(result, value, key) {
 *   (result[value] || (result[value] = [])).push(key);
 * }, {});
 * // => { '1': ['a', 'c'], '2': ['b'] }
 */
function transform(object, iteratee, accumulator) {
  var isArr = isArray(object),
      isArrLike = isArr || isBuffer(object) || isTypedArray(object);

  iteratee = baseIteratee(iteratee, 4);
  if (accumulator == null) {
    var Ctor = object && object.constructor;
    if (isArrLike) {
      accumulator = isArr ? new Ctor() : [];
    } else if (isObject(object)) {
      accumulator = isFunction(Ctor) ? baseCreate(getPrototype(object)) : {};
    } else {
      accumulator = {};
    }
  }
  (isArrLike ? arrayEach : baseForOwn)(object, function (value, index, object) {
    return iteratee(accumulator, value, index, object);
  });
  return accumulator;
}

/**
 * Used by `_.trim` and `_.trimEnd` to get the index of the last string symbol
 * that is not found in the character symbols.
 *
 * @private
 * @param {Array} strSymbols The string symbols to inspect.
 * @param {Array} chrSymbols The character symbols to find.
 * @returns {number} Returns the index of the last unmatched string symbol.
 */
function charsEndIndex(strSymbols, chrSymbols) {
  var index = strSymbols.length;

  while (index-- && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
  return index;
}

/**
 * Used by `_.trim` and `_.trimStart` to get the index of the first string symbol
 * that is not found in the character symbols.
 *
 * @private
 * @param {Array} strSymbols The string symbols to inspect.
 * @param {Array} chrSymbols The character symbols to find.
 * @returns {number} Returns the index of the first unmatched string symbol.
 */
function charsStartIndex(strSymbols, chrSymbols) {
  var index = -1,
      length = strSymbols.length;

  while (++index < length && baseIndexOf(chrSymbols, strSymbols[index], 0) > -1) {}
  return index;
}

/** Used to match leading and trailing whitespace. */
var reTrim$1 = /^\s+|\s+$/g;

/**
 * Removes leading and trailing whitespace or specified characters from `string`.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category String
 * @param {string} [string=''] The string to trim.
 * @param {string} [chars=whitespace] The characters to trim.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {string} Returns the trimmed string.
 * @example
 *
 * _.trim('  abc  ');
 * // => 'abc'
 *
 * _.trim('-_-abc-_-', '_-');
 * // => 'abc'
 *
 * _.map(['  foo  ', '  bar  '], _.trim);
 * // => ['foo', 'bar']
 */
function trim(string, chars, guard) {
  string = toString(string);
  if (string && (guard || chars === undefined)) {
    return string.replace(reTrim$1, '');
  }
  if (!string || !(chars = baseToString(chars))) {
    return string;
  }
  var strSymbols = stringToArray(string),
      chrSymbols = stringToArray(chars),
      start = charsStartIndex(strSymbols, chrSymbols),
      end = charsEndIndex(strSymbols, chrSymbols) + 1;

  return castSlice(strSymbols, start, end).join('');
}

/** Used to match leading and trailing whitespace. */
var reTrimEnd = /\s+$/;

/**
 * Removes trailing whitespace or specified characters from `string`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to trim.
 * @param {string} [chars=whitespace] The characters to trim.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {string} Returns the trimmed string.
 * @example
 *
 * _.trimEnd('  abc  ');
 * // => '  abc'
 *
 * _.trimEnd('-_-abc-_-', '_-');
 * // => '-_-abc'
 */
function trimEnd(string, chars, guard) {
  string = toString(string);
  if (string && (guard || chars === undefined)) {
    return string.replace(reTrimEnd, '');
  }
  if (!string || !(chars = baseToString(chars))) {
    return string;
  }
  var strSymbols = stringToArray(string),
      end = charsEndIndex(strSymbols, stringToArray(chars)) + 1;

  return castSlice(strSymbols, 0, end).join('');
}

/** Used to match leading and trailing whitespace. */
var reTrimStart$1 = /^\s+/;

/**
 * Removes leading whitespace or specified characters from `string`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to trim.
 * @param {string} [chars=whitespace] The characters to trim.
 * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
 * @returns {string} Returns the trimmed string.
 * @example
 *
 * _.trimStart('  abc  ');
 * // => 'abc  '
 *
 * _.trimStart('-_-abc-_-', '_-');
 * // => 'abc-_-'
 */
function trimStart(string, chars, guard) {
  string = toString(string);
  if (string && (guard || chars === undefined)) {
    return string.replace(reTrimStart$1, '');
  }
  if (!string || !(chars = baseToString(chars))) {
    return string;
  }
  var strSymbols = stringToArray(string),
      start = charsStartIndex(strSymbols, stringToArray(chars));

  return castSlice(strSymbols, start).join('');
}

/** Used as default options for `_.truncate`. */
var DEFAULT_TRUNC_LENGTH = 30;
var DEFAULT_TRUNC_OMISSION = '...';

/** Used to match `RegExp` flags from their coerced string values. */
var reFlags$1 = /\w*$/;

/**
 * Truncates `string` if it's longer than the given maximum string length.
 * The last characters of the truncated string are replaced with the omission
 * string which defaults to "...".
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to truncate.
 * @param {Object} [options={}] The options object.
 * @param {number} [options.length=30] The maximum string length.
 * @param {string} [options.omission='...'] The string to indicate text is omitted.
 * @param {RegExp|string} [options.separator] The separator pattern to truncate to.
 * @returns {string} Returns the truncated string.
 * @example
 *
 * _.truncate('hi-diddly-ho there, neighborino');
 * // => 'hi-diddly-ho there, neighbo...'
 *
 * _.truncate('hi-diddly-ho there, neighborino', {
 *   'length': 24,
 *   'separator': ' '
 * });
 * // => 'hi-diddly-ho there,...'
 *
 * _.truncate('hi-diddly-ho there, neighborino', {
 *   'length': 24,
 *   'separator': /,? +/
 * });
 * // => 'hi-diddly-ho there...'
 *
 * _.truncate('hi-diddly-ho there, neighborino', {
 *   'omission': ' [...]'
 * });
 * // => 'hi-diddly-ho there, neig [...]'
 */
function truncate(string, options) {
  var length = DEFAULT_TRUNC_LENGTH,
      omission = DEFAULT_TRUNC_OMISSION;

  if (isObject(options)) {
    var separator = 'separator' in options ? options.separator : separator;
    length = 'length' in options ? toInteger(options.length) : length;
    omission = 'omission' in options ? baseToString(options.omission) : omission;
  }
  string = toString(string);

  var strLength = string.length;
  if (hasUnicode(string)) {
    var strSymbols = stringToArray(string);
    strLength = strSymbols.length;
  }
  if (length >= strLength) {
    return string;
  }
  var end = length - stringSize(omission);
  if (end < 1) {
    return omission;
  }
  var result = strSymbols ? castSlice(strSymbols, 0, end).join('') : string.slice(0, end);

  if (separator === undefined) {
    return result + omission;
  }
  if (strSymbols) {
    end += result.length - end;
  }
  if (isRegExp(separator)) {
    if (string.slice(end).search(separator)) {
      var match,
          substring = result;

      if (!separator.global) {
        separator = RegExp(separator.source, toString(reFlags$1.exec(separator)) + 'g');
      }
      separator.lastIndex = 0;
      while (match = separator.exec(substring)) {
        var newEnd = match.index;
      }
      result = result.slice(0, newEnd === undefined ? end : newEnd);
    }
  } else if (string.indexOf(baseToString(separator), end) != end) {
    var index = result.lastIndexOf(separator);
    if (index > -1) {
      result = result.slice(0, index);
    }
  }
  return result + omission;
}

/**
 * Creates a function that accepts up to one argument, ignoring any
 * additional arguments.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Function
 * @param {Function} func The function to cap arguments for.
 * @returns {Function} Returns the new capped function.
 * @example
 *
 * _.map(['6', '8', '10'], _.unary(parseInt));
 * // => [6, 8, 10]
 */
function unary(func) {
  return ary(func, 1);
}

/** Used to map HTML entities to characters. */
var htmlUnescapes = {
  '&amp;': '&',
  '&lt;': '<',
  '&gt;': '>',
  '&quot;': '"',
  '&#39;': "'"
};

/**
 * Used by `_.unescape` to convert HTML entities to characters.
 *
 * @private
 * @param {string} chr The matched character to unescape.
 * @returns {string} Returns the unescaped character.
 */
var unescapeHtmlChar = basePropertyOf(htmlUnescapes);

/** Used to match HTML entities and HTML characters. */
var reEscapedHtml = /&(?:amp|lt|gt|quot|#39);/g;
var reHasEscapedHtml = RegExp(reEscapedHtml.source);

/**
 * The inverse of `_.escape`; this method converts the HTML entities
 * `&amp;`, `&lt;`, `&gt;`, `&quot;`, and `&#39;` in `string` to
 * their corresponding characters.
 *
 * **Note:** No other HTML entities are unescaped. To unescape additional
 * HTML entities use a third-party library like [_he_](https://mths.be/he).
 *
 * @static
 * @memberOf _
 * @since 0.6.0
 * @category String
 * @param {string} [string=''] The string to unescape.
 * @returns {string} Returns the unescaped string.
 * @example
 *
 * _.unescape('fred, barney, &amp; pebbles');
 * // => 'fred, barney, & pebbles'
 */
function unescape(string) {
    string = toString(string);
    return string && reHasEscapedHtml.test(string) ? string.replace(reEscapedHtml, unescapeHtmlChar) : string;
}

/** Used as references for various `Number` constants. */
var INFINITY$5 = 1 / 0;

/**
 * Creates a set object of `values`.
 *
 * @private
 * @param {Array} values The values to add to the set.
 * @returns {Object} Returns the new set.
 */
var createSet = !(Set && 1 / setToArray(new Set([, -0]))[1] == INFINITY$5) ? noop : function (values) {
  return new Set(values);
};

/** Used as the size to enable large array optimizations. */
var LARGE_ARRAY_SIZE$2 = 200;

/**
 * The base implementation of `_.uniqBy` without support for iteratee shorthands.
 *
 * @private
 * @param {Array} array The array to inspect.
 * @param {Function} [iteratee] The iteratee invoked per element.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns the new duplicate free array.
 */
function baseUniq(array, iteratee, comparator) {
  var index = -1,
      includes = arrayIncludes,
      length = array.length,
      isCommon = true,
      result = [],
      seen = result;

  if (comparator) {
    isCommon = false;
    includes = arrayIncludesWith;
  } else if (length >= LARGE_ARRAY_SIZE$2) {
    var set = iteratee ? null : createSet(array);
    if (set) {
      return setToArray(set);
    }
    isCommon = false;
    includes = cacheHas;
    seen = new SetCache();
  } else {
    seen = iteratee ? [] : result;
  }
  outer: while (++index < length) {
    var value = array[index],
        computed = iteratee ? iteratee(value) : value;

    value = comparator || value !== 0 ? value : 0;
    if (isCommon && computed === computed) {
      var seenIndex = seen.length;
      while (seenIndex--) {
        if (seen[seenIndex] === computed) {
          continue outer;
        }
      }
      if (iteratee) {
        seen.push(computed);
      }
      result.push(value);
    } else if (!includes(seen, computed, comparator)) {
      if (seen !== result) {
        seen.push(computed);
      }
      result.push(value);
    }
  }
  return result;
}

/**
 * Creates an array of unique values, in order, from all given arrays using
 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {...Array} [arrays] The arrays to inspect.
 * @returns {Array} Returns the new array of combined values.
 * @example
 *
 * _.union([2], [1, 2]);
 * // => [2, 1]
 */
var union = baseRest(function (arrays) {
  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true));
});

/**
 * This method is like `_.union` except that it accepts `iteratee` which is
 * invoked for each element of each `arrays` to generate the criterion by
 * which uniqueness is computed. Result values are chosen from the first
 * array in which the value occurs. The iteratee is invoked with one argument:
 * (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {...Array} [arrays] The arrays to inspect.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {Array} Returns the new array of combined values.
 * @example
 *
 * _.unionBy([2.1], [1.2, 2.3], Math.floor);
 * // => [2.1, 1.2]
 *
 * // The `_.property` iteratee shorthand.
 * _.unionBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
 * // => [{ 'x': 1 }, { 'x': 2 }]
 */
var unionBy = baseRest(function (arrays) {
  var iteratee = last(arrays);
  if (isArrayLikeObject(iteratee)) {
    iteratee = undefined;
  }
  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), baseIteratee(iteratee, 2));
});

/**
 * This method is like `_.union` except that it accepts `comparator` which
 * is invoked to compare elements of `arrays`. Result values are chosen from
 * the first array in which the value occurs. The comparator is invoked
 * with two arguments: (arrVal, othVal).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {...Array} [arrays] The arrays to inspect.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns the new array of combined values.
 * @example
 *
 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
 * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
 *
 * _.unionWith(objects, others, _.isEqual);
 * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
 */
var unionWith = baseRest(function (arrays) {
  var comparator = last(arrays);
  comparator = typeof comparator == 'function' ? comparator : undefined;
  return baseUniq(baseFlatten(arrays, 1, isArrayLikeObject, true), undefined, comparator);
});

/**
 * Creates a duplicate-free version of an array, using
 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons, in which only the first occurrence of each element
 * is kept. The order of result values is determined by the order they occur
 * in the array.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @returns {Array} Returns the new duplicate free array.
 * @example
 *
 * _.uniq([2, 1, 2]);
 * // => [2, 1]
 */
function uniq(array) {
  return array && array.length ? baseUniq(array) : [];
}

/**
 * This method is like `_.uniq` except that it accepts `iteratee` which is
 * invoked for each element in `array` to generate the criterion by which
 * uniqueness is computed. The order of result values is determined by the
 * order they occur in the array. The iteratee is invoked with one argument:
 * (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {Array} Returns the new duplicate free array.
 * @example
 *
 * _.uniqBy([2.1, 1.2, 2.3], Math.floor);
 * // => [2.1, 1.2]
 *
 * // The `_.property` iteratee shorthand.
 * _.uniqBy([{ 'x': 1 }, { 'x': 2 }, { 'x': 1 }], 'x');
 * // => [{ 'x': 1 }, { 'x': 2 }]
 */
function uniqBy(array, iteratee) {
  return array && array.length ? baseUniq(array, baseIteratee(iteratee, 2)) : [];
}

/**
 * This method is like `_.uniq` except that it accepts `comparator` which
 * is invoked to compare elements of `array`. The order of result values is
 * determined by the order they occur in the array.The comparator is invoked
 * with two arguments: (arrVal, othVal).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns the new duplicate free array.
 * @example
 *
 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }, { 'x': 1, 'y': 2 }];
 *
 * _.uniqWith(objects, _.isEqual);
 * // => [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }]
 */
function uniqWith(array, comparator) {
  comparator = typeof comparator == 'function' ? comparator : undefined;
  return array && array.length ? baseUniq(array, undefined, comparator) : [];
}

/** Used to generate unique IDs. */
var idCounter = 0;

/**
 * Generates a unique ID. If `prefix` is given, the ID is appended to it.
 *
 * @static
 * @since 0.1.0
 * @memberOf _
 * @category Util
 * @param {string} [prefix=''] The value to prefix the ID with.
 * @returns {string} Returns the unique ID.
 * @example
 *
 * _.uniqueId('contact_');
 * // => 'contact_104'
 *
 * _.uniqueId();
 * // => '105'
 */
function uniqueId(prefix) {
  var id = ++idCounter;
  return toString(prefix) + id;
}

/**
 * Removes the property at `path` of `object`.
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Object
 * @param {Object} object The object to modify.
 * @param {Array|string} path The path of the property to unset.
 * @returns {boolean} Returns `true` if the property is deleted, else `false`.
 * @example
 *
 * var object = { 'a': [{ 'b': { 'c': 7 } }] };
 * _.unset(object, 'a[0].b.c');
 * // => true
 *
 * console.log(object);
 * // => { 'a': [{ 'b': {} }] };
 *
 * _.unset(object, ['a', '0', 'b', 'c']);
 * // => true
 *
 * console.log(object);
 * // => { 'a': [{ 'b': {} }] };
 */
function unset(object, path) {
  return object == null ? true : baseUnset(object, path);
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$14 = Math.max;

/**
 * This method is like `_.zip` except that it accepts an array of grouped
 * elements and creates an array regrouping the elements to their pre-zip
 * configuration.
 *
 * @static
 * @memberOf _
 * @since 1.2.0
 * @category Array
 * @param {Array} array The array of grouped elements to process.
 * @returns {Array} Returns the new array of regrouped elements.
 * @example
 *
 * var zipped = _.zip(['a', 'b'], [1, 2], [true, false]);
 * // => [['a', 1, true], ['b', 2, false]]
 *
 * _.unzip(zipped);
 * // => [['a', 'b'], [1, 2], [true, false]]
 */
function unzip(array) {
  if (!(array && array.length)) {
    return [];
  }
  var length = 0;
  array = arrayFilter(array, function (group) {
    if (isArrayLikeObject(group)) {
      length = nativeMax$14(group.length, length);
      return true;
    }
  });
  return baseTimes(length, function (index) {
    return arrayMap(array, baseProperty(index));
  });
}

/**
 * This method is like `_.unzip` except that it accepts `iteratee` to specify
 * how regrouped values should be combined. The iteratee is invoked with the
 * elements of each group: (...group).
 *
 * @static
 * @memberOf _
 * @since 3.8.0
 * @category Array
 * @param {Array} array The array of grouped elements to process.
 * @param {Function} [iteratee=_.identity] The function to combine
 *  regrouped values.
 * @returns {Array} Returns the new array of regrouped elements.
 * @example
 *
 * var zipped = _.zip([1, 2], [10, 20], [100, 200]);
 * // => [[1, 10, 100], [2, 20, 200]]
 *
 * _.unzipWith(zipped, _.add);
 * // => [3, 30, 300]
 */
function unzipWith(array, iteratee) {
  if (!(array && array.length)) {
    return [];
  }
  var result = unzip(array);
  if (iteratee == null) {
    return result;
  }
  return arrayMap(result, function (group) {
    return apply(iteratee, undefined, group);
  });
}

/**
 * The base implementation of `_.update`.
 *
 * @private
 * @param {Object} object The object to modify.
 * @param {Array|string} path The path of the property to update.
 * @param {Function} updater The function to produce the updated value.
 * @param {Function} [customizer] The function to customize path creation.
 * @returns {Object} Returns `object`.
 */
function baseUpdate(object, path, updater, customizer) {
  return baseSet(object, path, updater(baseGet(object, path)), customizer);
}

/**
 * This method is like `_.set` except that accepts `updater` to produce the
 * value to set. Use `_.updateWith` to customize `path` creation. The `updater`
 * is invoked with one argument: (value).
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 4.6.0
 * @category Object
 * @param {Object} object The object to modify.
 * @param {Array|string} path The path of the property to set.
 * @param {Function} updater The function to produce the updated value.
 * @returns {Object} Returns `object`.
 * @example
 *
 * var object = { 'a': [{ 'b': { 'c': 3 } }] };
 *
 * _.update(object, 'a[0].b.c', function(n) { return n * n; });
 * console.log(object.a[0].b.c);
 * // => 9
 *
 * _.update(object, 'x[0].y.z', function(n) { return n ? n + 1 : 0; });
 * console.log(object.x[0].y.z);
 * // => 0
 */
function update(object, path, updater) {
  return object == null ? object : baseUpdate(object, path, castFunction(updater));
}

/**
 * This method is like `_.update` except that it accepts `customizer` which is
 * invoked to produce the objects of `path`.  If `customizer` returns `undefined`
 * path creation is handled by the method instead. The `customizer` is invoked
 * with three arguments: (nsValue, key, nsObject).
 *
 * **Note:** This method mutates `object`.
 *
 * @static
 * @memberOf _
 * @since 4.6.0
 * @category Object
 * @param {Object} object The object to modify.
 * @param {Array|string} path The path of the property to set.
 * @param {Function} updater The function to produce the updated value.
 * @param {Function} [customizer] The function to customize assigned values.
 * @returns {Object} Returns `object`.
 * @example
 *
 * var object = {};
 *
 * _.updateWith(object, '[0][1]', _.constant('a'), Object);
 * // => { '0': { '1': 'a' } }
 */
function updateWith(object, path, updater, customizer) {
  customizer = typeof customizer == 'function' ? customizer : undefined;
  return object == null ? object : baseUpdate(object, path, castFunction(updater), customizer);
}

/**
 * Converts `string`, as space separated words, to upper case.
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category String
 * @param {string} [string=''] The string to convert.
 * @returns {string} Returns the upper cased string.
 * @example
 *
 * _.upperCase('--foo-bar');
 * // => 'FOO BAR'
 *
 * _.upperCase('fooBar');
 * // => 'FOO BAR'
 *
 * _.upperCase('__foo_bar__');
 * // => 'FOO BAR'
 */
var upperCase = createCompounder(function (result, word, index) {
  return result + (index ? ' ' : '') + word.toUpperCase();
});

/**
 * Creates an array of the own and inherited enumerable string keyed property
 * values of `object`.
 *
 * **Note:** Non-object values are coerced to objects.
 *
 * @static
 * @memberOf _
 * @since 3.0.0
 * @category Object
 * @param {Object} object The object to query.
 * @returns {Array} Returns the array of property values.
 * @example
 *
 * function Foo() {
 *   this.a = 1;
 *   this.b = 2;
 * }
 *
 * Foo.prototype.c = 3;
 *
 * _.valuesIn(new Foo);
 * // => [1, 2, 3] (iteration order is not guaranteed)
 */
function valuesIn(object) {
  return object == null ? [] : baseValues(object, keysIn$1(object));
}

/**
 * Creates an array excluding all given values using
 * [`SameValueZero`](http://ecma-international.org/ecma-262/7.0/#sec-samevaluezero)
 * for equality comparisons.
 *
 * **Note:** Unlike `_.pull`, this method returns a new array.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {Array} array The array to inspect.
 * @param {...*} [values] The values to exclude.
 * @returns {Array} Returns the new array of filtered values.
 * @see _.difference, _.xor
 * @example
 *
 * _.without([2, 1, 2, 3], 1, 2);
 * // => [3]
 */
var without = baseRest(function (array, values) {
  return isArrayLikeObject(array) ? baseDifference(array, values) : [];
});

/**
 * Creates a function that provides `value` to `wrapper` as its first
 * argument. Any additional arguments provided to the function are appended
 * to those provided to the `wrapper`. The wrapper is invoked with the `this`
 * binding of the created function.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Function
 * @param {*} value The value to wrap.
 * @param {Function} [wrapper=identity] The wrapper function.
 * @returns {Function} Returns the new function.
 * @example
 *
 * var p = _.wrap(_.escape, function(func, text) {
 *   return '<p>' + func(text) + '</p>';
 * });
 *
 * p('fred, barney, & pebbles');
 * // => '<p>fred, barney, &amp; pebbles</p>'
 */
function wrap(value, wrapper) {
  return partial(castFunction(wrapper), value);
}

/**
 * This method is the wrapper version of `_.at`.
 *
 * @name at
 * @memberOf _
 * @since 1.0.0
 * @category Seq
 * @param {...(string|string[])} [paths] The property paths to pick.
 * @returns {Object} Returns the new `lodash` wrapper instance.
 * @example
 *
 * var object = { 'a': [{ 'b': { 'c': 3 } }, 4] };
 *
 * _(object).at(['a[0].b.c', 'a[1]']).value();
 * // => [3, 4]
 */
var wrapperAt = flatRest(function (paths) {
  var length = paths.length,
      start = length ? paths[0] : 0,
      value = this.__wrapped__,
      interceptor = function interceptor(object) {
    return baseAt(object, paths);
  };

  if (length > 1 || this.__actions__.length || !(value instanceof LazyWrapper) || !isIndex(start)) {
    return this.thru(interceptor);
  }
  value = value.slice(start, +start + (length ? 1 : 0));
  value.__actions__.push({
    'func': thru,
    'args': [interceptor],
    'thisArg': undefined
  });
  return new LodashWrapper(value, this.__chain__).thru(function (array) {
    if (length && !array.length) {
      array.push(undefined);
    }
    return array;
  });
});

/**
 * Creates a `lodash` wrapper instance with explicit method chain sequences enabled.
 *
 * @name chain
 * @memberOf _
 * @since 0.1.0
 * @category Seq
 * @returns {Object} Returns the new `lodash` wrapper instance.
 * @example
 *
 * var users = [
 *   { 'user': 'barney', 'age': 36 },
 *   { 'user': 'fred',   'age': 40 }
 * ];
 *
 * // A sequence without explicit chaining.
 * _(users).head();
 * // => { 'user': 'barney', 'age': 36 }
 *
 * // A sequence with explicit chaining.
 * _(users)
 *   .chain()
 *   .head()
 *   .pick('user')
 *   .value();
 * // => { 'user': 'barney' }
 */
function wrapperChain() {
  return chain(this);
}

/**
 * This method is the wrapper version of `_.reverse`.
 *
 * **Note:** This method mutates the wrapped array.
 *
 * @name reverse
 * @memberOf _
 * @since 0.1.0
 * @category Seq
 * @returns {Object} Returns the new `lodash` wrapper instance.
 * @example
 *
 * var array = [1, 2, 3];
 *
 * _(array).reverse().value()
 * // => [3, 2, 1]
 *
 * console.log(array);
 * // => [3, 2, 1]
 */
function wrapperReverse() {
  var value = this.__wrapped__;
  if (value instanceof LazyWrapper) {
    var wrapped = value;
    if (this.__actions__.length) {
      wrapped = new LazyWrapper(this);
    }
    wrapped = wrapped.reverse();
    wrapped.__actions__.push({
      'func': thru,
      'args': [reverse],
      'thisArg': undefined
    });
    return new LodashWrapper(wrapped, this.__chain__);
  }
  return this.thru(reverse);
}

/**
 * The base implementation of methods like `_.xor`, without support for
 * iteratee shorthands, that accepts an array of arrays to inspect.
 *
 * @private
 * @param {Array} arrays The arrays to inspect.
 * @param {Function} [iteratee] The iteratee invoked per element.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns the new array of values.
 */
function baseXor(arrays, iteratee, comparator) {
  var length = arrays.length;
  if (length < 2) {
    return length ? baseUniq(arrays[0]) : [];
  }
  var index = -1,
      result = Array(length);

  while (++index < length) {
    var array = arrays[index],
        othIndex = -1;

    while (++othIndex < length) {
      if (othIndex != index) {
        result[index] = baseDifference(result[index] || array, arrays[othIndex], iteratee, comparator);
      }
    }
  }
  return baseUniq(baseFlatten(result, 1), iteratee, comparator);
}

/**
 * Creates an array of unique values that is the
 * [symmetric difference](https://en.wikipedia.org/wiki/Symmetric_difference)
 * of the given arrays. The order of result values is determined by the order
 * they occur in the arrays.
 *
 * @static
 * @memberOf _
 * @since 2.4.0
 * @category Array
 * @param {...Array} [arrays] The arrays to inspect.
 * @returns {Array} Returns the new array of filtered values.
 * @see _.difference, _.without
 * @example
 *
 * _.xor([2, 1], [2, 3]);
 * // => [1, 3]
 */
var xor = baseRest(function (arrays) {
  return baseXor(arrayFilter(arrays, isArrayLikeObject));
});

/**
 * This method is like `_.xor` except that it accepts `iteratee` which is
 * invoked for each element of each `arrays` to generate the criterion by
 * which by which they're compared. The order of result values is determined
 * by the order they occur in the arrays. The iteratee is invoked with one
 * argument: (value).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {...Array} [arrays] The arrays to inspect.
 * @param {Function} [iteratee=_.identity] The iteratee invoked per element.
 * @returns {Array} Returns the new array of filtered values.
 * @example
 *
 * _.xorBy([2.1, 1.2], [2.3, 3.4], Math.floor);
 * // => [1.2, 3.4]
 *
 * // The `_.property` iteratee shorthand.
 * _.xorBy([{ 'x': 1 }], [{ 'x': 2 }, { 'x': 1 }], 'x');
 * // => [{ 'x': 2 }]
 */
var xorBy = baseRest(function (arrays) {
  var iteratee = last(arrays);
  if (isArrayLikeObject(iteratee)) {
    iteratee = undefined;
  }
  return baseXor(arrayFilter(arrays, isArrayLikeObject), baseIteratee(iteratee, 2));
});

/**
 * This method is like `_.xor` except that it accepts `comparator` which is
 * invoked to compare elements of `arrays`. The order of result values is
 * determined by the order they occur in the arrays. The comparator is invoked
 * with two arguments: (arrVal, othVal).
 *
 * @static
 * @memberOf _
 * @since 4.0.0
 * @category Array
 * @param {...Array} [arrays] The arrays to inspect.
 * @param {Function} [comparator] The comparator invoked per element.
 * @returns {Array} Returns the new array of filtered values.
 * @example
 *
 * var objects = [{ 'x': 1, 'y': 2 }, { 'x': 2, 'y': 1 }];
 * var others = [{ 'x': 1, 'y': 1 }, { 'x': 1, 'y': 2 }];
 *
 * _.xorWith(objects, others, _.isEqual);
 * // => [{ 'x': 2, 'y': 1 }, { 'x': 1, 'y': 1 }]
 */
var xorWith = baseRest(function (arrays) {
  var comparator = last(arrays);
  comparator = typeof comparator == 'function' ? comparator : undefined;
  return baseXor(arrayFilter(arrays, isArrayLikeObject), undefined, comparator);
});

/**
 * Creates an array of grouped elements, the first of which contains the
 * first elements of the given arrays, the second of which contains the
 * second elements of the given arrays, and so on.
 *
 * @static
 * @memberOf _
 * @since 0.1.0
 * @category Array
 * @param {...Array} [arrays] The arrays to process.
 * @returns {Array} Returns the new array of grouped elements.
 * @example
 *
 * _.zip(['a', 'b'], [1, 2], [true, false]);
 * // => [['a', 1, true], ['b', 2, false]]
 */
var zip = baseRest(unzip);

/**
 * This base implementation of `_.zipObject` which assigns values using `assignFunc`.
 *
 * @private
 * @param {Array} props The property identifiers.
 * @param {Array} values The property values.
 * @param {Function} assignFunc The function to assign values.
 * @returns {Object} Returns the new object.
 */
function baseZipObject(props, values, assignFunc) {
  var index = -1,
      length = props.length,
      valsLength = values.length,
      result = {};

  while (++index < length) {
    var value = index < valsLength ? values[index] : undefined;
    assignFunc(result, props[index], value);
  }
  return result;
}

/**
 * This method is like `_.fromPairs` except that it accepts two arrays,
 * one of property identifiers and one of corresponding values.
 *
 * @static
 * @memberOf _
 * @since 0.4.0
 * @category Array
 * @param {Array} [props=[]] The property identifiers.
 * @param {Array} [values=[]] The property values.
 * @returns {Object} Returns the new object.
 * @example
 *
 * _.zipObject(['a', 'b'], [1, 2]);
 * // => { 'a': 1, 'b': 2 }
 */
function zipObject(props, values) {
  return baseZipObject(props || [], values || [], assignValue);
}

/**
 * This method is like `_.zipObject` except that it supports property paths.
 *
 * @static
 * @memberOf _
 * @since 4.1.0
 * @category Array
 * @param {Array} [props=[]] The property identifiers.
 * @param {Array} [values=[]] The property values.
 * @returns {Object} Returns the new object.
 * @example
 *
 * _.zipObjectDeep(['a.b[0].c', 'a.b[1].d'], [1, 2]);
 * // => { 'a': { 'b': [{ 'c': 1 }, { 'd': 2 }] } }
 */
function zipObjectDeep(props, values) {
  return baseZipObject(props || [], values || [], baseSet);
}

/**
 * This method is like `_.zip` except that it accepts `iteratee` to specify
 * how grouped values should be combined. The iteratee is invoked with the
 * elements of each group: (...group).
 *
 * @static
 * @memberOf _
 * @since 3.8.0
 * @category Array
 * @param {...Array} [arrays] The arrays to process.
 * @param {Function} [iteratee=_.identity] The function to combine
 *  grouped values.
 * @returns {Array} Returns the new array of grouped elements.
 * @example
 *
 * _.zipWith([1, 2], [10, 20], [100, 200], function(a, b, c) {
 *   return a + b + c;
 * });
 * // => [111, 222]
 */
var zipWith = baseRest(function (arrays) {
  var length = arrays.length,
      iteratee = length > 1 ? arrays[length - 1] : undefined;

  iteratee = typeof iteratee == 'function' ? (arrays.pop(), iteratee) : undefined;
  return unzipWith(arrays, iteratee);
});

var array = {
  chunk: chunk, compact: compact, concat: concat, difference: difference, differenceBy: differenceBy,
  differenceWith: differenceWith, drop: drop, dropRight: dropRight, dropRightWhile: dropRightWhile, dropWhile: dropWhile,
  fill: fill, findIndex: findIndex, findLastIndex: findLastIndex, first: head, flatten: flatten,
  flattenDeep: flattenDeep, flattenDepth: flattenDepth, fromPairs: fromPairs, head: head, indexOf: indexOf,
  initial: initial, intersection: intersection, intersectionBy: intersectionBy, intersectionWith: intersectionWith, join: join,
  last: last, lastIndexOf: lastIndexOf, nth: nth, pull: pull, pullAll: pullAll,
  pullAllBy: pullAllBy, pullAllWith: pullAllWith, pullAt: pullAt, remove: remove, reverse: reverse,
  slice: slice, sortedIndex: sortedIndex, sortedIndexBy: sortedIndexBy, sortedIndexOf: sortedIndexOf, sortedLastIndex: sortedLastIndex,
  sortedLastIndexBy: sortedLastIndexBy, sortedLastIndexOf: sortedLastIndexOf, sortedUniq: sortedUniq, sortedUniqBy: sortedUniqBy, tail: tail,
  take: take, takeRight: takeRight, takeRightWhile: takeRightWhile, takeWhile: takeWhile, union: union,
  unionBy: unionBy, unionWith: unionWith, uniq: uniq, uniqBy: uniqBy, uniqWith: uniqWith,
  unzip: unzip, unzipWith: unzipWith, without: without, xor: xor, xorBy: xorBy,
  xorWith: xorWith, zip: zip, zipObject: zipObject, zipObjectDeep: zipObjectDeep, zipWith: zipWith
};

var collection = {
  countBy: countBy, each: forEach, eachRight: forEachRight, every: every, filter: filter,
  find: find, findLast: findLast, flatMap: flatMap, flatMapDeep: flatMapDeep, flatMapDepth: flatMapDepth,
  forEach: forEach, forEachRight: forEachRight, groupBy: groupBy, includes: includes, invokeMap: invokeMap,
  keyBy: keyBy, map: map, orderBy: orderBy, partition: partition, reduce: reduce,
  reduceRight: reduceRight, reject: reject, sample: sample, sampleSize: sampleSize, shuffle: shuffle,
  size: size, some: some, sortBy: sortBy
};

var date = {
  now: now
};

var func = {
  after: after, ary: ary, before: before, bind: bind, bindKey: bindKey,
  curry: curry, curryRight: curryRight, debounce: debounce, defer: defer, delay: delay,
  flip: flip, memoize: memoize, negate: negate, once: once, overArgs: overArgs,
  partial: partial, partialRight: partialRight, rearg: rearg, rest: rest, spread: spread,
  throttle: throttle, unary: unary, wrap: wrap
};

var lang = {
  castArray: castArray, clone: clone, cloneDeep: cloneDeep, cloneDeepWith: cloneDeepWith, cloneWith: cloneWith,
  conformsTo: conformsTo, eq: eq, gt: gt, gte: gte, isArguments: isArguments,
  isArray: isArray, isArrayBuffer: isArrayBuffer, isArrayLike: isArrayLike, isArrayLikeObject: isArrayLikeObject, isBoolean: isBoolean,
  isBuffer: isBuffer, isDate: isDate, isElement: isElement, isEmpty: isEmpty, isEqual: isEqual,
  isEqualWith: isEqualWith, isError: isError, isFinite: isFinite, isFunction: isFunction, isInteger: isInteger,
  isLength: isLength, isMap: isMap, isMatch: isMatch, isMatchWith: isMatchWith, isNaN: isNaN,
  isNative: isNative, isNil: isNil, isNull: isNull, isNumber: isNumber, isObject: isObject,
  isObjectLike: isObjectLike, isPlainObject: isPlainObject, isRegExp: isRegExp, isSafeInteger: isSafeInteger, isSet: isSet,
  isString: isString, isSymbol: isSymbol, isTypedArray: isTypedArray, isUndefined: isUndefined, isWeakMap: isWeakMap,
  isWeakSet: isWeakSet, lt: lt, lte: lte, toArray: toArray$1, toFinite: toFinite,
  toInteger: toInteger, toLength: toLength, toNumber: toNumber, toPlainObject: toPlainObject, toSafeInteger: toSafeInteger,
  toString: toString
};

var math = {
  add: add, ceil: ceil, divide: divide, floor: floor, max: max,
  maxBy: maxBy, mean: mean, meanBy: meanBy, min: min, minBy: minBy,
  multiply: multiply, round: round, subtract: subtract, sum: sum, sumBy: sumBy
};

var number = {
  clamp: clamp, inRange: inRange, random: random
};

var object = {
  assign: assign, assignIn: assignIn, assignInWith: assignInWith, assignWith: assignWith, at: at,
  create: create$1, defaults: defaults$1, defaultsDeep: defaultsDeep, entries: toPairs, entriesIn: toPairsIn,
  extend: assignIn, extendWith: assignInWith, findKey: findKey, findLastKey: findLastKey, forIn: forIn,
  forInRight: forInRight, forOwn: forOwn, forOwnRight: forOwnRight, functions: functions, functionsIn: functionsIn,
  get: get$1, has: has, hasIn: hasIn, invert: invert, invertBy: invertBy,
  invoke: invoke, keys: keys, keysIn: keysIn$1, mapKeys: mapKeys, mapValues: mapValues,
  merge: merge, mergeWith: mergeWith, omit: omit, omitBy: omitBy, pick: pick,
  pickBy: pickBy, result: result, set: set$1, setWith: setWith, toPairs: toPairs,
  toPairsIn: toPairsIn, transform: transform, unset: unset, update: update, updateWith: updateWith,
  values: values, valuesIn: valuesIn
};

var seq = {
  at: wrapperAt, chain: chain, commit: wrapperCommit, lodash: lodash, next: wrapperNext,
  plant: wrapperPlant, reverse: wrapperReverse, tap: tap, thru: thru, toIterator: wrapperToIterator,
  toJSON: wrapperValue, value: wrapperValue, valueOf: wrapperValue, wrapperChain: wrapperChain
};

var string = {
  camelCase: camelCase, capitalize: capitalize, deburr: deburr, endsWith: endsWith, escape: escape,
  escapeRegExp: escapeRegExp, kebabCase: kebabCase, lowerCase: lowerCase, lowerFirst: lowerFirst, pad: pad,
  padEnd: padEnd, padStart: padStart, parseInt: parseInt$1, repeat: repeat, replace: replace,
  snakeCase: snakeCase, split: split, startCase: startCase, startsWith: startsWith, template: template,
  templateSettings: templateSettings, toLower: toLower, toUpper: toUpper, trim: trim, trimEnd: trimEnd,
  trimStart: trimStart, truncate: truncate, unescape: unescape, upperCase: upperCase, upperFirst: upperFirst,
  words: words
};

var util = {
  attempt: attempt, bindAll: bindAll, cond: cond, conforms: conforms, constant: constant,
  defaultTo: defaultTo, flow: flow, flowRight: flowRight, identity: identity, iteratee: iteratee,
  matches: matches, matchesProperty: matchesProperty, method: method, methodOf: methodOf, mixin: mixin,
  noop: noop, nthArg: nthArg, over: over, overEvery: overEvery, overSome: overSome,
  property: property, propertyOf: propertyOf, range: range, rangeRight: rangeRight, stubArray: stubArray,
  stubFalse: stubFalse, stubObject: stubObject, stubString: stubString, stubTrue: stubTrue, times: times,
  toPath: toPath, uniqueId: uniqueId
};

/**
 * Creates a clone of the lazy wrapper object.
 *
 * @private
 * @name clone
 * @memberOf LazyWrapper
 * @returns {Object} Returns the cloned `LazyWrapper` object.
 */
function lazyClone() {
  var result = new LazyWrapper(this.__wrapped__);
  result.__actions__ = copyArray(this.__actions__);
  result.__dir__ = this.__dir__;
  result.__filtered__ = this.__filtered__;
  result.__iteratees__ = copyArray(this.__iteratees__);
  result.__takeCount__ = this.__takeCount__;
  result.__views__ = copyArray(this.__views__);
  return result;
}

/**
 * Reverses the direction of lazy iteration.
 *
 * @private
 * @name reverse
 * @memberOf LazyWrapper
 * @returns {Object} Returns the new reversed `LazyWrapper` object.
 */
function lazyReverse() {
  if (this.__filtered__) {
    var result = new LazyWrapper(this);
    result.__dir__ = -1;
    result.__filtered__ = true;
  } else {
    result = this.clone();
    result.__dir__ *= -1;
  }
  return result;
}

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$16 = Math.max;
var nativeMin$14 = Math.min;

/**
 * Gets the view, applying any `transforms` to the `start` and `end` positions.
 *
 * @private
 * @param {number} start The start of the view.
 * @param {number} end The end of the view.
 * @param {Array} transforms The transformations to apply to the view.
 * @returns {Object} Returns an object containing the `start` and `end`
 *  positions of the view.
 */
function getView(start, end, transforms) {
  var index = -1,
      length = transforms.length;

  while (++index < length) {
    var data = transforms[index],
        size = data.size;

    switch (data.type) {
      case 'drop':
        start += size;break;
      case 'dropRight':
        end -= size;break;
      case 'take':
        end = nativeMin$14(end, start + size);break;
      case 'takeRight':
        start = nativeMax$16(start, end - size);break;
    }
  }
  return { 'start': start, 'end': end };
}

/** Used to indicate the type of lazy iteratees. */
var LAZY_FILTER_FLAG$1 = 1;
var LAZY_MAP_FLAG = 2;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMin$13 = Math.min;

/**
 * Extracts the unwrapped value from its lazy wrapper.
 *
 * @private
 * @name value
 * @memberOf LazyWrapper
 * @returns {*} Returns the unwrapped value.
 */
function lazyValue() {
  var array = this.__wrapped__.value(),
      dir = this.__dir__,
      isArr = isArray(array),
      isRight = dir < 0,
      arrLength = isArr ? array.length : 0,
      view = getView(0, arrLength, this.__views__),
      start = view.start,
      end = view.end,
      length = end - start,
      index = isRight ? end : start - 1,
      iteratees = this.__iteratees__,
      iterLength = iteratees.length,
      resIndex = 0,
      takeCount = nativeMin$13(length, this.__takeCount__);

  if (!isArr || !isRight && arrLength == length && takeCount == length) {
    return baseWrapperValue(array, this.__actions__);
  }
  var result = [];

  outer: while (length-- && resIndex < takeCount) {
    index += dir;

    var iterIndex = -1,
        value = array[index];

    while (++iterIndex < iterLength) {
      var data = iteratees[iterIndex],
          iteratee = data.iteratee,
          type = data.type,
          computed = iteratee(value);

      if (type == LAZY_MAP_FLAG) {
        value = computed;
      } else if (!computed) {
        if (type == LAZY_FILTER_FLAG$1) {
          continue outer;
        } else {
          break outer;
        }
      }
    }
    result[resIndex++] = value;
  }
  return result;
}

/**
 * @license
 * Lodash (Custom Build) <https://lodash.com/>
 * Build: `lodash modularize exports="es" -o ./`
 * Copyright JS Foundation and other contributors <https://js.foundation/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 */
/** Used as the semantic version number. */
var VERSION = '4.17.4';

/** Used to compose bitmasks for function metadata. */
var WRAP_BIND_KEY_FLAG$6 = 2;

/** Used to indicate the type of lazy iteratees. */
var LAZY_FILTER_FLAG = 1;
var LAZY_WHILE_FLAG = 3;

/** Used as references for the maximum length and index of an array. */
var MAX_ARRAY_LENGTH$6 = 4294967295;

/** Used for built-in method references. */
var arrayProto$5 = Array.prototype;
var objectProto$25 = Object.prototype;

/** Used to check objects for own properties. */
var hasOwnProperty$22 = objectProto$25.hasOwnProperty;

/** Built-in value references. */
var symIterator$1 = _Symbol ? _Symbol.iterator : undefined;

/* Built-in method references for those with the same name as other `lodash` methods. */
var nativeMax$15 = Math.max;
var nativeMin$12 = Math.min;

// wrap `_.mixin` so it works when provided only one argument
var mixin$2 = function (func$$1) {
  return function (object$$1, source, options) {
    if (options == null) {
      var isObj = isObject(source),
          props = isObj && keys(source),
          methodNames = props && props.length && baseFunctions(source, props);

      if (!(methodNames ? methodNames.length : isObj)) {
        options = source;
        source = object$$1;
        object$$1 = this;
      }
    }
    return func$$1(object$$1, source, options);
  };
}(mixin);

// Add methods that return wrapped values in chain sequences.
lodash.after = func.after;
lodash.ary = func.ary;
lodash.assign = object.assign;
lodash.assignIn = object.assignIn;
lodash.assignInWith = object.assignInWith;
lodash.assignWith = object.assignWith;
lodash.at = object.at;
lodash.before = func.before;
lodash.bind = func.bind;
lodash.bindAll = util.bindAll;
lodash.bindKey = func.bindKey;
lodash.castArray = lang.castArray;
lodash.chain = seq.chain;
lodash.chunk = array.chunk;
lodash.compact = array.compact;
lodash.concat = array.concat;
lodash.cond = util.cond;
lodash.conforms = util.conforms;
lodash.constant = util.constant;
lodash.countBy = collection.countBy;
lodash.create = object.create;
lodash.curry = func.curry;
lodash.curryRight = func.curryRight;
lodash.debounce = func.debounce;
lodash.defaults = object.defaults;
lodash.defaultsDeep = object.defaultsDeep;
lodash.defer = func.defer;
lodash.delay = func.delay;
lodash.difference = array.difference;
lodash.differenceBy = array.differenceBy;
lodash.differenceWith = array.differenceWith;
lodash.drop = array.drop;
lodash.dropRight = array.dropRight;
lodash.dropRightWhile = array.dropRightWhile;
lodash.dropWhile = array.dropWhile;
lodash.fill = array.fill;
lodash.filter = collection.filter;
lodash.flatMap = collection.flatMap;
lodash.flatMapDeep = collection.flatMapDeep;
lodash.flatMapDepth = collection.flatMapDepth;
lodash.flatten = array.flatten;
lodash.flattenDeep = array.flattenDeep;
lodash.flattenDepth = array.flattenDepth;
lodash.flip = func.flip;
lodash.flow = util.flow;
lodash.flowRight = util.flowRight;
lodash.fromPairs = array.fromPairs;
lodash.functions = object.functions;
lodash.functionsIn = object.functionsIn;
lodash.groupBy = collection.groupBy;
lodash.initial = array.initial;
lodash.intersection = array.intersection;
lodash.intersectionBy = array.intersectionBy;
lodash.intersectionWith = array.intersectionWith;
lodash.invert = object.invert;
lodash.invertBy = object.invertBy;
lodash.invokeMap = collection.invokeMap;
lodash.iteratee = util.iteratee;
lodash.keyBy = collection.keyBy;
lodash.keys = keys;
lodash.keysIn = object.keysIn;
lodash.map = collection.map;
lodash.mapKeys = object.mapKeys;
lodash.mapValues = object.mapValues;
lodash.matches = util.matches;
lodash.matchesProperty = util.matchesProperty;
lodash.memoize = func.memoize;
lodash.merge = object.merge;
lodash.mergeWith = object.mergeWith;
lodash.method = util.method;
lodash.methodOf = util.methodOf;
lodash.mixin = mixin$2;
lodash.negate = negate;
lodash.nthArg = util.nthArg;
lodash.omit = object.omit;
lodash.omitBy = object.omitBy;
lodash.once = func.once;
lodash.orderBy = collection.orderBy;
lodash.over = util.over;
lodash.overArgs = func.overArgs;
lodash.overEvery = util.overEvery;
lodash.overSome = util.overSome;
lodash.partial = func.partial;
lodash.partialRight = func.partialRight;
lodash.partition = collection.partition;
lodash.pick = object.pick;
lodash.pickBy = object.pickBy;
lodash.property = util.property;
lodash.propertyOf = util.propertyOf;
lodash.pull = array.pull;
lodash.pullAll = array.pullAll;
lodash.pullAllBy = array.pullAllBy;
lodash.pullAllWith = array.pullAllWith;
lodash.pullAt = array.pullAt;
lodash.range = util.range;
lodash.rangeRight = util.rangeRight;
lodash.rearg = func.rearg;
lodash.reject = collection.reject;
lodash.remove = array.remove;
lodash.rest = func.rest;
lodash.reverse = array.reverse;
lodash.sampleSize = collection.sampleSize;
lodash.set = object.set;
lodash.setWith = object.setWith;
lodash.shuffle = collection.shuffle;
lodash.slice = array.slice;
lodash.sortBy = collection.sortBy;
lodash.sortedUniq = array.sortedUniq;
lodash.sortedUniqBy = array.sortedUniqBy;
lodash.split = string.split;
lodash.spread = func.spread;
lodash.tail = array.tail;
lodash.take = array.take;
lodash.takeRight = array.takeRight;
lodash.takeRightWhile = array.takeRightWhile;
lodash.takeWhile = array.takeWhile;
lodash.tap = seq.tap;
lodash.throttle = func.throttle;
lodash.thru = thru;
lodash.toArray = lang.toArray;
lodash.toPairs = object.toPairs;
lodash.toPairsIn = object.toPairsIn;
lodash.toPath = util.toPath;
lodash.toPlainObject = lang.toPlainObject;
lodash.transform = object.transform;
lodash.unary = func.unary;
lodash.union = array.union;
lodash.unionBy = array.unionBy;
lodash.unionWith = array.unionWith;
lodash.uniq = array.uniq;
lodash.uniqBy = array.uniqBy;
lodash.uniqWith = array.uniqWith;
lodash.unset = object.unset;
lodash.unzip = array.unzip;
lodash.unzipWith = array.unzipWith;
lodash.update = object.update;
lodash.updateWith = object.updateWith;
lodash.values = object.values;
lodash.valuesIn = object.valuesIn;
lodash.without = array.without;
lodash.words = string.words;
lodash.wrap = func.wrap;
lodash.xor = array.xor;
lodash.xorBy = array.xorBy;
lodash.xorWith = array.xorWith;
lodash.zip = array.zip;
lodash.zipObject = array.zipObject;
lodash.zipObjectDeep = array.zipObjectDeep;
lodash.zipWith = array.zipWith;

// Add aliases.
lodash.entries = object.toPairs;
lodash.entriesIn = object.toPairsIn;
lodash.extend = object.assignIn;
lodash.extendWith = object.assignInWith;

// Add methods to `lodash.prototype`.
mixin$2(lodash, lodash);

// Add methods that return unwrapped values in chain sequences.
lodash.add = math.add;
lodash.attempt = util.attempt;
lodash.camelCase = string.camelCase;
lodash.capitalize = string.capitalize;
lodash.ceil = math.ceil;
lodash.clamp = number.clamp;
lodash.clone = lang.clone;
lodash.cloneDeep = lang.cloneDeep;
lodash.cloneDeepWith = lang.cloneDeepWith;
lodash.cloneWith = lang.cloneWith;
lodash.conformsTo = lang.conformsTo;
lodash.deburr = string.deburr;
lodash.defaultTo = util.defaultTo;
lodash.divide = math.divide;
lodash.endsWith = string.endsWith;
lodash.eq = lang.eq;
lodash.escape = string.escape;
lodash.escapeRegExp = string.escapeRegExp;
lodash.every = collection.every;
lodash.find = collection.find;
lodash.findIndex = array.findIndex;
lodash.findKey = object.findKey;
lodash.findLast = collection.findLast;
lodash.findLastIndex = array.findLastIndex;
lodash.findLastKey = object.findLastKey;
lodash.floor = math.floor;
lodash.forEach = collection.forEach;
lodash.forEachRight = collection.forEachRight;
lodash.forIn = object.forIn;
lodash.forInRight = object.forInRight;
lodash.forOwn = object.forOwn;
lodash.forOwnRight = object.forOwnRight;
lodash.get = object.get;
lodash.gt = lang.gt;
lodash.gte = lang.gte;
lodash.has = object.has;
lodash.hasIn = object.hasIn;
lodash.head = array.head;
lodash.identity = identity;
lodash.includes = collection.includes;
lodash.indexOf = array.indexOf;
lodash.inRange = number.inRange;
lodash.invoke = object.invoke;
lodash.isArguments = lang.isArguments;
lodash.isArray = isArray;
lodash.isArrayBuffer = lang.isArrayBuffer;
lodash.isArrayLike = lang.isArrayLike;
lodash.isArrayLikeObject = lang.isArrayLikeObject;
lodash.isBoolean = lang.isBoolean;
lodash.isBuffer = lang.isBuffer;
lodash.isDate = lang.isDate;
lodash.isElement = lang.isElement;
lodash.isEmpty = lang.isEmpty;
lodash.isEqual = lang.isEqual;
lodash.isEqualWith = lang.isEqualWith;
lodash.isError = lang.isError;
lodash.isFinite = lang.isFinite;
lodash.isFunction = lang.isFunction;
lodash.isInteger = lang.isInteger;
lodash.isLength = lang.isLength;
lodash.isMap = lang.isMap;
lodash.isMatch = lang.isMatch;
lodash.isMatchWith = lang.isMatchWith;
lodash.isNaN = lang.isNaN;
lodash.isNative = lang.isNative;
lodash.isNil = lang.isNil;
lodash.isNull = lang.isNull;
lodash.isNumber = lang.isNumber;
lodash.isObject = isObject;
lodash.isObjectLike = lang.isObjectLike;
lodash.isPlainObject = lang.isPlainObject;
lodash.isRegExp = lang.isRegExp;
lodash.isSafeInteger = lang.isSafeInteger;
lodash.isSet = lang.isSet;
lodash.isString = lang.isString;
lodash.isSymbol = lang.isSymbol;
lodash.isTypedArray = lang.isTypedArray;
lodash.isUndefined = lang.isUndefined;
lodash.isWeakMap = lang.isWeakMap;
lodash.isWeakSet = lang.isWeakSet;
lodash.join = array.join;
lodash.kebabCase = string.kebabCase;
lodash.last = last;
lodash.lastIndexOf = array.lastIndexOf;
lodash.lowerCase = string.lowerCase;
lodash.lowerFirst = string.lowerFirst;
lodash.lt = lang.lt;
lodash.lte = lang.lte;
lodash.max = math.max;
lodash.maxBy = math.maxBy;
lodash.mean = math.mean;
lodash.meanBy = math.meanBy;
lodash.min = math.min;
lodash.minBy = math.minBy;
lodash.stubArray = util.stubArray;
lodash.stubFalse = util.stubFalse;
lodash.stubObject = util.stubObject;
lodash.stubString = util.stubString;
lodash.stubTrue = util.stubTrue;
lodash.multiply = math.multiply;
lodash.nth = array.nth;
lodash.noop = util.noop;
lodash.now = date.now;
lodash.pad = string.pad;
lodash.padEnd = string.padEnd;
lodash.padStart = string.padStart;
lodash.parseInt = string.parseInt;
lodash.random = number.random;
lodash.reduce = collection.reduce;
lodash.reduceRight = collection.reduceRight;
lodash.repeat = string.repeat;
lodash.replace = string.replace;
lodash.result = object.result;
lodash.round = math.round;
lodash.sample = collection.sample;
lodash.size = collection.size;
lodash.snakeCase = string.snakeCase;
lodash.some = collection.some;
lodash.sortedIndex = array.sortedIndex;
lodash.sortedIndexBy = array.sortedIndexBy;
lodash.sortedIndexOf = array.sortedIndexOf;
lodash.sortedLastIndex = array.sortedLastIndex;
lodash.sortedLastIndexBy = array.sortedLastIndexBy;
lodash.sortedLastIndexOf = array.sortedLastIndexOf;
lodash.startCase = string.startCase;
lodash.startsWith = string.startsWith;
lodash.subtract = math.subtract;
lodash.sum = math.sum;
lodash.sumBy = math.sumBy;
lodash.template = string.template;
lodash.times = util.times;
lodash.toFinite = lang.toFinite;
lodash.toInteger = toInteger;
lodash.toLength = lang.toLength;
lodash.toLower = string.toLower;
lodash.toNumber = lang.toNumber;
lodash.toSafeInteger = lang.toSafeInteger;
lodash.toString = lang.toString;
lodash.toUpper = string.toUpper;
lodash.trim = string.trim;
lodash.trimEnd = string.trimEnd;
lodash.trimStart = string.trimStart;
lodash.truncate = string.truncate;
lodash.unescape = string.unescape;
lodash.uniqueId = util.uniqueId;
lodash.upperCase = string.upperCase;
lodash.upperFirst = string.upperFirst;

// Add aliases.
lodash.each = collection.forEach;
lodash.eachRight = collection.forEachRight;
lodash.first = array.head;

mixin$2(lodash, function () {
  var source = {};
  baseForOwn(lodash, function (func$$1, methodName) {
    if (!hasOwnProperty$22.call(lodash.prototype, methodName)) {
      source[methodName] = func$$1;
    }
  });
  return source;
}(), { 'chain': false });

/**
 * The semantic version number.
 *
 * @static
 * @memberOf _
 * @type {string}
 */
lodash.VERSION = VERSION;
(lodash.templateSettings = string.templateSettings).imports._ = lodash;

// Assign default placeholders.
arrayEach(['bind', 'bindKey', 'curry', 'curryRight', 'partial', 'partialRight'], function (methodName) {
  lodash[methodName].placeholder = lodash;
});

// Add `LazyWrapper` methods for `_.drop` and `_.take` variants.
arrayEach(['drop', 'take'], function (methodName, index) {
  LazyWrapper.prototype[methodName] = function (n) {
    n = n === undefined ? 1 : nativeMax$15(toInteger(n), 0);

    var result$$1 = this.__filtered__ && !index ? new LazyWrapper(this) : this.clone();

    if (result$$1.__filtered__) {
      result$$1.__takeCount__ = nativeMin$12(n, result$$1.__takeCount__);
    } else {
      result$$1.__views__.push({
        'size': nativeMin$12(n, MAX_ARRAY_LENGTH$6),
        'type': methodName + (result$$1.__dir__ < 0 ? 'Right' : '')
      });
    }
    return result$$1;
  };

  LazyWrapper.prototype[methodName + 'Right'] = function (n) {
    return this.reverse()[methodName](n).reverse();
  };
});

// Add `LazyWrapper` methods that accept an `iteratee` value.
arrayEach(['filter', 'map', 'takeWhile'], function (methodName, index) {
  var type = index + 1,
      isFilter = type == LAZY_FILTER_FLAG || type == LAZY_WHILE_FLAG;

  LazyWrapper.prototype[methodName] = function (iteratee$$1) {
    var result$$1 = this.clone();
    result$$1.__iteratees__.push({
      'iteratee': baseIteratee(iteratee$$1, 3),
      'type': type
    });
    result$$1.__filtered__ = result$$1.__filtered__ || isFilter;
    return result$$1;
  };
});

// Add `LazyWrapper` methods for `_.head` and `_.last`.
arrayEach(['head', 'last'], function (methodName, index) {
  var takeName = 'take' + (index ? 'Right' : '');

  LazyWrapper.prototype[methodName] = function () {
    return this[takeName](1).value()[0];
  };
});

// Add `LazyWrapper` methods for `_.initial` and `_.tail`.
arrayEach(['initial', 'tail'], function (methodName, index) {
  var dropName = 'drop' + (index ? '' : 'Right');

  LazyWrapper.prototype[methodName] = function () {
    return this.__filtered__ ? new LazyWrapper(this) : this[dropName](1);
  };
});

LazyWrapper.prototype.compact = function () {
  return this.filter(identity);
};

LazyWrapper.prototype.find = function (predicate) {
  return this.filter(predicate).head();
};

LazyWrapper.prototype.findLast = function (predicate) {
  return this.reverse().find(predicate);
};

LazyWrapper.prototype.invokeMap = baseRest(function (path, args) {
  if (typeof path == 'function') {
    return new LazyWrapper(this);
  }
  return this.map(function (value$$1) {
    return baseInvoke(value$$1, path, args);
  });
});

LazyWrapper.prototype.reject = function (predicate) {
  return this.filter(negate(baseIteratee(predicate)));
};

LazyWrapper.prototype.slice = function (start, end) {
  start = toInteger(start);

  var result$$1 = this;
  if (result$$1.__filtered__ && (start > 0 || end < 0)) {
    return new LazyWrapper(result$$1);
  }
  if (start < 0) {
    result$$1 = result$$1.takeRight(-start);
  } else if (start) {
    result$$1 = result$$1.drop(start);
  }
  if (end !== undefined) {
    end = toInteger(end);
    result$$1 = end < 0 ? result$$1.dropRight(-end) : result$$1.take(end - start);
  }
  return result$$1;
};

LazyWrapper.prototype.takeRightWhile = function (predicate) {
  return this.reverse().takeWhile(predicate).reverse();
};

LazyWrapper.prototype.toArray = function () {
  return this.take(MAX_ARRAY_LENGTH$6);
};

// Add `LazyWrapper` methods to `lodash.prototype`.
baseForOwn(LazyWrapper.prototype, function (func$$1, methodName) {
  var checkIteratee = /^(?:filter|find|map|reject)|While$/.test(methodName),
      isTaker = /^(?:head|last)$/.test(methodName),
      lodashFunc = lodash[isTaker ? 'take' + (methodName == 'last' ? 'Right' : '') : methodName],
      retUnwrapped = isTaker || /^find/.test(methodName);

  if (!lodashFunc) {
    return;
  }
  lodash.prototype[methodName] = function () {
    var value$$1 = this.__wrapped__,
        args = isTaker ? [1] : arguments,
        isLazy = value$$1 instanceof LazyWrapper,
        iteratee$$1 = args[0],
        useLazy = isLazy || isArray(value$$1);

    var interceptor = function interceptor(value$$1) {
      var result$$1 = lodashFunc.apply(lodash, arrayPush([value$$1], args));
      return isTaker && chainAll ? result$$1[0] : result$$1;
    };

    if (useLazy && checkIteratee && typeof iteratee$$1 == 'function' && iteratee$$1.length != 1) {
      // Avoid lazy use if the iteratee has a "length" value other than `1`.
      isLazy = useLazy = false;
    }
    var chainAll = this.__chain__,
        isHybrid = !!this.__actions__.length,
        isUnwrapped = retUnwrapped && !chainAll,
        onlyLazy = isLazy && !isHybrid;

    if (!retUnwrapped && useLazy) {
      value$$1 = onlyLazy ? value$$1 : new LazyWrapper(this);
      var result$$1 = func$$1.apply(value$$1, args);
      result$$1.__actions__.push({ 'func': thru, 'args': [interceptor], 'thisArg': undefined });
      return new LodashWrapper(result$$1, chainAll);
    }
    if (isUnwrapped && onlyLazy) {
      return func$$1.apply(this, args);
    }
    result$$1 = this.thru(interceptor);
    return isUnwrapped ? isTaker ? result$$1.value()[0] : result$$1.value() : result$$1;
  };
});

// Add `Array` methods to `lodash.prototype`.
arrayEach(['pop', 'push', 'shift', 'sort', 'splice', 'unshift'], function (methodName) {
  var func$$1 = arrayProto$5[methodName],
      chainName = /^(?:push|sort|unshift)$/.test(methodName) ? 'tap' : 'thru',
      retUnwrapped = /^(?:pop|shift)$/.test(methodName);

  lodash.prototype[methodName] = function () {
    var args = arguments;
    if (retUnwrapped && !this.__chain__) {
      var value$$1 = this.value();
      return func$$1.apply(isArray(value$$1) ? value$$1 : [], args);
    }
    return this[chainName](function (value$$1) {
      return func$$1.apply(isArray(value$$1) ? value$$1 : [], args);
    });
  };
});

// Map minified method names to their real names.
baseForOwn(LazyWrapper.prototype, function (func$$1, methodName) {
  var lodashFunc = lodash[methodName];
  if (lodashFunc) {
    var key = lodashFunc.name + '',
        names = realNames[key] || (realNames[key] = []);

    names.push({ 'name': methodName, 'func': lodashFunc });
  }
});

realNames[createHybrid(undefined, WRAP_BIND_KEY_FLAG$6).name] = [{
  'name': 'wrapper',
  'func': undefined
}];

// Add methods to `LazyWrapper`.
LazyWrapper.prototype.clone = lazyClone;
LazyWrapper.prototype.reverse = lazyReverse;
LazyWrapper.prototype.value = lazyValue;

// Add chain sequence methods to the `lodash` wrapper.
lodash.prototype.at = seq.at;
lodash.prototype.chain = seq.wrapperChain;
lodash.prototype.commit = seq.commit;
lodash.prototype.next = seq.next;
lodash.prototype.plant = seq.plant;
lodash.prototype.reverse = seq.reverse;
lodash.prototype.toJSON = lodash.prototype.valueOf = lodash.prototype.value = seq.value;

// Add lazy aliases.
lodash.prototype.first = lodash.prototype.head;

if (symIterator$1) {
  lodash.prototype[symIterator$1] = seq.toIterator;
}

/**
 * @license
 * Lodash (Custom Build) <https://lodash.com/>
 * Build: `lodash modularize exports="es" -o ./`
 * Copyright JS Foundation and other contributors <https://js.foundation/>
 * Released under MIT license <https://lodash.com/license>
 * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
 * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
 */

function createCommonjsModule(fn, module) {
	return module = { exports: {} }, fn(module, module.exports), module.exports;
}

var stringify_1 = createCommonjsModule(function (module, exports) {
exports = module.exports = stringify;
exports.getSerialize = serializer;

function stringify(obj, replacer, spaces, cycleReplacer) {
  return JSON.stringify(obj, serializer(replacer, cycleReplacer), spaces);
}

function serializer(replacer, cycleReplacer) {
  var stack = [],
      keys = [];

  if (cycleReplacer == null) cycleReplacer = function cycleReplacer(key, value) {
    if (stack[0] === value) return "[Circular ~]";
    return "[Circular ~." + keys.slice(0, stack.indexOf(value)).join(".") + "]";
  };

  return function (key, value) {
    if (stack.length > 0) {
      var thisPos = stack.indexOf(this);
      ~thisPos ? stack.splice(thisPos + 1) : stack.push(this);
      ~thisPos ? keys.splice(thisPos, Infinity, key) : keys.push(key);
      if (~stack.indexOf(value)) value = cycleReplacer.call(this, key, value);
    } else stack.push(value);

    return replacer == null ? value : replacer.call(this, key, value);
  };
}
});

function assemble() {
  var str = '';
  var first$$1 = true;
  Array.prototype.slice.call(arguments).forEach(function (arg) {
    var appendend = void 0;
    if (Array.isArray(arg)) {
      appendend = '[' + arg.toString() + ']';
    } else if ((typeof arg === 'undefined' ? 'undefined' : _typeof(arg)) === 'object' && startsWith(arg.toString(), '[object')) {
      appendend = stringify_1(arg, null, 2);
    } else {
      appendend = arg;
    }
    if (first$$1) {
      str = appendend;
      first$$1 = false;
    } else {
      str = str + ' ' + appendend;
    }
  });
  return str;
}
var console$1 = {
  log: function log() {
    engine_1.log(assemble.apply(this, arguments));
  },
  error: function error() {
    engine_1.log(assemble.apply(this, arguments));
  }
};

/* eslint-disable no-global-assign, no-native-reassign */
console = console$1;
/* eslint-enable no-global-assign, no-native-reassign */

var buttons = {
  /* eslint-disable key-spacing, no-multi-spaces */
  'up': { status: '0xB0', midino: '0x68', name: 'up' },
  'down': { status: '0xB0', midino: '0x69', name: 'down' },
  'left': { status: '0xB0', midino: '0x6A', name: 'left' },
  'right': { status: '0xB0', midino: '0x6B', name: 'right' },
  'session': { status: '0xB0', midino: '0x6C', name: 'session' },
  'user1': { status: '0xB0', midino: '0x6D', name: 'user1' },
  'user2': { status: '0xB0', midino: '0x6E', name: 'user2' },
  'mixer': { status: '0xB0', midino: '0x6F', name: 'mixer' },
  'vol': { status: '0x90', midino: '0x08', name: 'vol' },
  'pan': { status: '0x90', midino: '0x18', name: 'pan' },
  'snda': { status: '0x90', midino: '0x28', name: 'snda' },
  'sndb': { status: '0x90', midino: '0x38', name: 'sndb' },
  'stop': { status: '0x90', midino: '0x48', name: 'stop' },
  'trkon': { status: '0x90', midino: '0x58', name: 'trkon' },
  'solo': { status: '0x90', midino: '0x68', name: 'solo' },
  'arm': { status: '0x90', midino: '0x78', name: 'arm' },
  '0,0': { status: '0x90', midino: '0x00', name: '0,0' },
  '0,1': { status: '0x90', midino: '0x01', name: '0,1' },
  '0,2': { status: '0x90', midino: '0x02', name: '0,2' },
  '0,3': { status: '0x90', midino: '0x03', name: '0,3' },
  '0,4': { status: '0x90', midino: '0x04', name: '0,4' },
  '0,5': { status: '0x90', midino: '0x05', name: '0,5' },
  '0,6': { status: '0x90', midino: '0x06', name: '0,6' },
  '0,7': { status: '0x90', midino: '0x07', name: '0,7' },
  '1,0': { status: '0x90', midino: '0x10', name: '1,0' },
  '1,1': { status: '0x90', midino: '0x11', name: '1,1' },
  '1,2': { status: '0x90', midino: '0x12', name: '1,2' },
  '1,3': { status: '0x90', midino: '0x13', name: '1,3' },
  '1,4': { status: '0x90', midino: '0x14', name: '1,4' },
  '1,5': { status: '0x90', midino: '0x15', name: '1,5' },
  '1,6': { status: '0x90', midino: '0x16', name: '1,6' },
  '1,7': { status: '0x90', midino: '0x17', name: '1,7' },
  '2,0': { status: '0x90', midino: '0x20', name: '2,0' },
  '2,1': { status: '0x90', midino: '0x21', name: '2,1' },
  '2,2': { status: '0x90', midino: '0x22', name: '2,2' },
  '2,3': { status: '0x90', midino: '0x23', name: '2,3' },
  '2,4': { status: '0x90', midino: '0x24', name: '2,4' },
  '2,5': { status: '0x90', midino: '0x25', name: '2,5' },
  '2,6': { status: '0x90', midino: '0x26', name: '2,6' },
  '2,7': { status: '0x90', midino: '0x27', name: '2,7' },
  '3,0': { status: '0x90', midino: '0x30', name: '3,0' },
  '3,1': { status: '0x90', midino: '0x31', name: '3,1' },
  '3,2': { status: '0x90', midino: '0x32', name: '3,2' },
  '3,3': { status: '0x90', midino: '0x33', name: '3,3' },
  '3,4': { status: '0x90', midino: '0x34', name: '3,4' },
  '3,5': { status: '0x90', midino: '0x35', name: '3,5' },
  '3,6': { status: '0x90', midino: '0x36', name: '3,6' },
  '3,7': { status: '0x90', midino: '0x37', name: '3,7' },
  '4,0': { status: '0x90', midino: '0x40', name: '4,0' },
  '4,1': { status: '0x90', midino: '0x41', name: '4,1' },
  '4,2': { status: '0x90', midino: '0x42', name: '4,2' },
  '4,3': { status: '0x90', midino: '0x43', name: '4,3' },
  '4,4': { status: '0x90', midino: '0x44', name: '4,4' },
  '4,5': { status: '0x90', midino: '0x45', name: '4,5' },
  '4,6': { status: '0x90', midino: '0x46', name: '4,6' },
  '4,7': { status: '0x90', midino: '0x47', name: '4,7' },
  '5,0': { status: '0x90', midino: '0x50', name: '5,0' },
  '5,1': { status: '0x90', midino: '0x51', name: '5,1' },
  '5,2': { status: '0x90', midino: '0x52', name: '5,2' },
  '5,3': { status: '0x90', midino: '0x53', name: '5,3' },
  '5,4': { status: '0x90', midino: '0x54', name: '5,4' },
  '5,5': { status: '0x90', midino: '0x55', name: '5,5' },
  '5,6': { status: '0x90', midino: '0x56', name: '5,6' },
  '5,7': { status: '0x90', midino: '0x57', name: '5,7' },
  '6,0': { status: '0x90', midino: '0x60', name: '6,0' },
  '6,1': { status: '0x90', midino: '0x61', name: '6,1' },
  '6,2': { status: '0x90', midino: '0x62', name: '6,2' },
  '6,3': { status: '0x90', midino: '0x63', name: '6,3' },
  '6,4': { status: '0x90', midino: '0x64', name: '6,4' },
  '6,5': { status: '0x90', midino: '0x65', name: '6,5' },
  '6,6': { status: '0x90', midino: '0x66', name: '6,6' },
  '6,7': { status: '0x90', midino: '0x67', name: '6,7' },
  '7,0': { status: '0x90', midino: '0x70', name: '7,0' },
  '7,1': { status: '0x90', midino: '0x71', name: '7,1' },
  '7,2': { status: '0x90', midino: '0x72', name: '7,2' },
  '7,3': { status: '0x90', midino: '0x73', name: '7,3' },
  '7,4': { status: '0x90', midino: '0x74', name: '7,4' },
  '7,5': { status: '0x90', midino: '0x75', name: '7,5' },
  '7,6': { status: '0x90', midino: '0x76', name: '7,6' },
  '7,7': { status: '0x90', midino: '0x77', name: '7,7' }
  /* eslint-enable key-spacing, no-multi-spaces */
};

var colors = {
  black: 4,
  lo_red: 1 + 4,
  hi_red: 3 + 4,
  lo_green: 16 + 4,
  hi_green: 48 + 4,
  lo_amber: 17 + 4,
  hi_amber: 51 + 4,
  hi_orange: 35 + 4,
  lo_orange: 18 + 4,
  hi_yellow: 50 + 4,
  lo_yellow: 33 + 4
};

var LaunchpadMidiButton = function () {
  function LaunchpadMidiButton(def) {
    classCallCheck(this, LaunchpadMidiButton);

    this.def = def;
  }

  createClass(LaunchpadMidiButton, [{
    key: 'sendColor',
    value: function sendColor(value$$1) {
      midi_1.sendShortMsg(this.def.status, this.def.midino, value$$1);
    }
  }]);
  return LaunchpadMidiButton;
}();

var Buttons = Object.keys(buttons).reduce(function (obj, name) {
  return assign(obj, defineProperty({}, name, new LaunchpadMidiButton(buttons[name])));
}, {});

var index$1 = createCommonjsModule(function (module) {
'use strict';

var has = Object.prototype.hasOwnProperty,
    prefix = '~';

/**
 * Constructor to create a storage for our `EE` objects.
 * An `Events` instance is a plain object whose properties are event names.
 *
 * @constructor
 * @api private
 */
function Events() {}

//
// We try to not inherit from `Object.prototype`. In some engines creating an
// instance in this way is faster than calling `Object.create(null)` directly.
// If `Object.create(null)` is not supported we prefix the event names with a
// character to make sure that the built-in object properties are not
// overridden or used as an attack vector.
//
if (Object.create) {
  Events.prototype = Object.create(null);

  //
  // This hack is needed because the `__proto__` property is still inherited in
  // some old browsers like Android 4, iPhone 5.1, Opera 11 and Safari 5.
  //
  if (!new Events().__proto__) prefix = false;
}

/**
 * Representation of a single event listener.
 *
 * @param {Function} fn The listener function.
 * @param {Mixed} context The context to invoke the listener with.
 * @param {Boolean} [once=false] Specify if the listener is a one-time listener.
 * @constructor
 * @api private
 */
function EE(fn, context, once) {
  this.fn = fn;
  this.context = context;
  this.once = once || false;
}

/**
 * Minimal `EventEmitter` interface that is molded against the Node.js
 * `EventEmitter` interface.
 *
 * @constructor
 * @api public
 */
function EventEmitter() {
  this._events = new Events();
  this._eventsCount = 0;
}

/**
 * Return an array listing the events for which the emitter has registered
 * listeners.
 *
 * @returns {Array}
 * @api public
 */
EventEmitter.prototype.eventNames = function eventNames() {
  var names = [],
      events,
      name;

  if (this._eventsCount === 0) return names;

  for (name in events = this._events) {
    if (has.call(events, name)) names.push(prefix ? name.slice(1) : name);
  }

  if (Object.getOwnPropertySymbols) {
    return names.concat(Object.getOwnPropertySymbols(events));
  }

  return names;
};

/**
 * Return the listeners registered for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Boolean} exists Only check if there are listeners.
 * @returns {Array|Boolean}
 * @api public
 */
EventEmitter.prototype.listeners = function listeners(event, exists) {
  var evt = prefix ? prefix + event : event,
      available = this._events[evt];

  if (exists) return !!available;
  if (!available) return [];
  if (available.fn) return [available.fn];

  for (var i = 0, l = available.length, ee = new Array(l); i < l; i++) {
    ee[i] = available[i].fn;
  }

  return ee;
};

/**
 * Calls each of the listeners registered for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @returns {Boolean} `true` if the event had listeners, else `false`.
 * @api public
 */
EventEmitter.prototype.emit = function emit(event, a1, a2, a3, a4, a5) {
  var evt = prefix ? prefix + event : event;

  if (!this._events[evt]) return false;

  var listeners = this._events[evt],
      len = arguments.length,
      args,
      i;

  if (listeners.fn) {
    if (listeners.once) this.removeListener(event, listeners.fn, undefined, true);

    switch (len) {
      case 1:
        return listeners.fn.call(listeners.context), true;
      case 2:
        return listeners.fn.call(listeners.context, a1), true;
      case 3:
        return listeners.fn.call(listeners.context, a1, a2), true;
      case 4:
        return listeners.fn.call(listeners.context, a1, a2, a3), true;
      case 5:
        return listeners.fn.call(listeners.context, a1, a2, a3, a4), true;
      case 6:
        return listeners.fn.call(listeners.context, a1, a2, a3, a4, a5), true;
    }

    for (i = 1, args = new Array(len - 1); i < len; i++) {
      args[i - 1] = arguments[i];
    }

    listeners.fn.apply(listeners.context, args);
  } else {
    var length = listeners.length,
        j;

    for (i = 0; i < length; i++) {
      if (listeners[i].once) this.removeListener(event, listeners[i].fn, undefined, true);

      switch (len) {
        case 1:
          listeners[i].fn.call(listeners[i].context);break;
        case 2:
          listeners[i].fn.call(listeners[i].context, a1);break;
        case 3:
          listeners[i].fn.call(listeners[i].context, a1, a2);break;
        case 4:
          listeners[i].fn.call(listeners[i].context, a1, a2, a3);break;
        default:
          if (!args) for (j = 1, args = new Array(len - 1); j < len; j++) {
            args[j - 1] = arguments[j];
          }

          listeners[i].fn.apply(listeners[i].context, args);
      }
    }
  }

  return true;
};

/**
 * Add a listener for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Function} fn The listener function.
 * @param {Mixed} [context=this] The context to invoke the listener with.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.on = function on(event, fn, context) {
  var listener = new EE(fn, context || this),
      evt = prefix ? prefix + event : event;

  if (!this._events[evt]) this._events[evt] = listener, this._eventsCount++;else if (!this._events[evt].fn) this._events[evt].push(listener);else this._events[evt] = [this._events[evt], listener];

  return this;
};

/**
 * Add a one-time listener for a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Function} fn The listener function.
 * @param {Mixed} [context=this] The context to invoke the listener with.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.once = function once(event, fn, context) {
  var listener = new EE(fn, context || this, true),
      evt = prefix ? prefix + event : event;

  if (!this._events[evt]) this._events[evt] = listener, this._eventsCount++;else if (!this._events[evt].fn) this._events[evt].push(listener);else this._events[evt] = [this._events[evt], listener];

  return this;
};

/**
 * Remove the listeners of a given event.
 *
 * @param {String|Symbol} event The event name.
 * @param {Function} fn Only remove the listeners that match this function.
 * @param {Mixed} context Only remove the listeners that have this context.
 * @param {Boolean} once Only remove one-time listeners.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.removeListener = function removeListener(event, fn, context, once) {
  var evt = prefix ? prefix + event : event;

  if (!this._events[evt]) return this;
  if (!fn) {
    if (--this._eventsCount === 0) this._events = new Events();else delete this._events[evt];
    return this;
  }

  var listeners = this._events[evt];

  if (listeners.fn) {
    if (listeners.fn === fn && (!once || listeners.once) && (!context || listeners.context === context)) {
      if (--this._eventsCount === 0) this._events = new Events();else delete this._events[evt];
    }
  } else {
    for (var i = 0, events = [], length = listeners.length; i < length; i++) {
      if (listeners[i].fn !== fn || once && !listeners[i].once || context && listeners[i].context !== context) {
        events.push(listeners[i]);
      }
    }

    //
    // Reset the array, or remove it completely if we have no more listeners.
    //
    if (events.length) this._events[evt] = events.length === 1 ? events[0] : events;else if (--this._eventsCount === 0) this._events = new Events();else delete this._events[evt];
  }

  return this;
};

/**
 * Remove all listeners, or those of the specified event.
 *
 * @param {String|Symbol} [event] The event name.
 * @returns {EventEmitter} `this`.
 * @api public
 */
EventEmitter.prototype.removeAllListeners = function removeAllListeners(event) {
  var evt;

  if (event) {
    evt = prefix ? prefix + event : event;
    if (this._events[evt]) {
      if (--this._eventsCount === 0) this._events = new Events();else delete this._events[evt];
    }
  } else {
    this._events = new Events();
    this._eventsCount = 0;
  }

  return this;
};

//
// Alias methods names because people roll like that.
//
EventEmitter.prototype.off = EventEmitter.prototype.removeListener;
EventEmitter.prototype.addListener = EventEmitter.prototype.on;

//
// This function doesn't apply anymore.
//
EventEmitter.prototype.setMaxListeners = function setMaxListeners() {
  return this;
};

//
// Expose the prefix.
//
EventEmitter.prefixed = prefix;

//
// Allow `EventEmitter` to be imported as module namespace.
//
EventEmitter.EventEmitter = EventEmitter;

//
// Expose the module.
//
{
  module.exports = EventEmitter;
}
});

var callbackPrefix = '__midi';

var MidiBus = function (_EventEmitter) {
  inherits(MidiBus, _EventEmitter);
  createClass(MidiBus, null, [{
    key: 'create',
    value: function create(registry) {
      return new MidiBus(registry);
    }
  }]);

  function MidiBus(registry) {
    classCallCheck(this, MidiBus);

    var _this = possibleConstructorReturn(this, (MidiBus.__proto__ || Object.getPrototypeOf(MidiBus)).call(this));

    _this.registry = registry;

    Object.keys(Buttons).forEach(function (buttonName) {
      var button = Buttons[buttonName];
      var def = button.def;
      _this.registry[callbackPrefix + '_' + def.status + '_' + def.midino] = function (channel, control, value, status) {
        var message = { value: value, button: button };
        _this.emit(def.name, message);
      };
    });
    return _this;
  }

  return MidiBus;
}(index$1);

var Control = function () {
  function Control(def) {
    classCallCheck(this, Control);

    this.def = def;
  }

  createClass(Control, [{
    key: 'setValue',
    value: function setValue(value$$1) {
      engine_1.setValue(this.def.group, this.def.name, value$$1);
    }
  }, {
    key: 'getValue',
    value: function getValue() {
      return engine_1.getValue(this.def.group, this.def.name);
    }
  }]);
  return Control;
}();

var playListControlDef = {
  'LoadSelectedIntoFirstStopped': { group: '[Playlist]', name: 'LoadSelectedIntoFirstStopped', type: 'binary', description: 'Loads the currently highlighted song into the first stopped deck' },
  'SelectNextPlaylist': { group: '[Playlist]', name: 'SelectNextPlaylist', type: 'binary', description: 'Switches to the next view (Library, Queue, etc.)' },
  'SelectPrevPlaylist': { group: '[Playlist]', name: 'SelectPrevPlaylist', type: 'binary', description: 'Switches to the previous view (Library, Queue, etc.)' },
  'ToggleSelectedSidebarItem': { group: '[Playlist]', name: 'ToggleSelectedSidebarItem', type: 'binary', description: 'Toggles (expands/collapses) the currently selected sidebar item.' },
  'SelectNextTrack': { group: '[Playlist]', name: 'SelectNextTrack', type: 'binary', description: 'Scrolls to the next track in the track table.' },
  'SelectPrevTrack': { group: '[Playlist]', name: 'SelectPrevTrack', type: 'binary', description: 'Scrolls to the previous track in the track table.' },
  'SelectTrackKnob': { group: '[Playlist]', name: 'SelectTrackKnob', type: 'relative value', description: 'Scrolls the given number of tracks in the track table (can be negative for reverse direction).' },
  'AutoDjAddBottom': { group: '[Playlist]', name: 'AutoDjAddBottom', type: 'binary', description: 'Add selected track(s) to Auto DJ Queue (bottom).' },
  'AutoDjAddTop': { group: '[Playlist]', name: 'AutoDjAddTop', type: 'binary', description: 'Add selected track(s) to Auto DJ Queue (top).' }
};

var playListControl = Object.keys(playListControlDef).reduce(function (obj, key) {
  return assign(obj, defineProperty({}, key, new Control(playListControlDef[key])));
}, {});

var channelDef = function channelDef(type, i) {
  return {
    'back': { group: '[' + type + i + ']', name: 'back', type: 'binary' },
    'beat_active': { group: '[' + type + i + ']', name: 'beat_active', type: 'binary' },
    'beatjump': { group: '[' + type + i + ']', name: 'beatjump', type: 'real number' },
    'beatjumps': function beatjumps(x) {
      return {
        'forward': { group: '[' + type + i + ']', name: 'beatjump_' + x + '_forward', type: 'binary' },
        'backward': { group: '[' + type + i + ']', name: 'beatjump_' + x + '_backward', type: 'binary' }
      };
    },
    'beatloop': { group: '[' + type + i + ']', name: 'beatloop', type: 'positive real number' },
    'beatloops': function beatloops(x) {
      return {
        'activate': { group: '[' + type + i + ']', name: 'beatloop_' + x + '_activate', type: 'binary' },
        'toggle': { group: '[' + type + i + ']', name: 'beatloop_' + x + '_toggle', type: 'binary' },
        'enabled': { group: '[' + type + i + ']', name: 'beatloop_' + x + '_enabled', type: 'binary' }
      };
    },
    'beats_adjust_faster': { group: '[' + type + i + ']', name: 'beats_adjust_faster', type: 'binary' },
    'beats_adjust_slower': { group: '[' + type + i + ']', name: 'beats_adjust_slower', type: 'binary' },
    'beats_translate_curpos': { group: '[' + type + i + ']', name: 'beats_translate_curpos', type: 'binary' },
    'beats_translate_match_alignment': { group: '[' + type + i + ']', name: 'beats_translate_match_alignment', type: 'binary' },
    'beats_translate_earlier': { group: '[' + type + i + ']', name: 'beats_translate_earlier', type: 'binary' },
    'beats_translate_later': { group: '[' + type + i + ']', name: 'beats_translate_later', type: 'binary' },
    'beatsync': { group: '[' + type + i + ']', name: 'beatsync', type: 'binary' },
    'beatsync_phase': { group: '[' + type + i + ']', name: 'beatsync_phase', type: 'binary' },
    'beatsync_tempo': { group: '[' + type + i + ']', name: 'beatsync_tempo', type: 'binary' },
    'bpm': { group: '[' + type + i + ']', name: 'bpm', type: 'real-valued' },
    'bpm_tap': { group: '[' + type + i + ']', name: 'bpm_tap', type: 'binary' },
    'cue_default': { group: '[' + type + i + ']', name: 'cue_default', type: 'binary' },
    'cue_gotoandplay': { group: '[' + type + i + ']', name: 'cue_gotoandplay', type: 'binary' },
    'cue_gotoandstop': { group: '[' + type + i + ']', name: 'cue_gotoandstop', type: 'binary' },
    'cue_indicator': { group: '[' + type + i + ']', name: 'cue_indicator', type: 'binary' },
    'cue_cdj': { group: '[' + type + i + ']', name: 'cue_cdj', type: 'binary' },
    'cue_play': { group: '[' + type + i + ']', name: 'cue_play', type: 'binary' },
    'cue_point': { group: '[' + type + i + ']', name: 'cue_point', type: 'absolute value' },
    'cue_preview': { group: '[' + type + i + ']', name: 'cue_preview', type: 'binary' },
    'cue_set': { group: '[' + type + i + ']', name: 'cue_set', type: 'binary' },
    'cue_simple': { group: '[' + type + i + ']', name: 'cue_simple', type: 'binary' },
    'duration': { group: '[' + type + i + ']', name: 'duration', type: 'absolute value' },
    'eject': { group: '[' + type + i + ']', name: 'eject', type: 'binary' },
    'end': { group: '[' + type + i + ']', name: 'end', type: 'binary' },
    'file_bpm': { group: '[' + type + i + ']', name: 'file_bpm', type: 'positive value' },
    'file_key': { group: '[' + type + i + ']', name: 'file_key', type: '?' },
    'fwd': { group: '[' + type + i + ']', name: 'fwd', type: 'binary' },
    'hotcues': function hotcues(x) {
      return {
        'activate': { group: '[' + type + i + ']', name: 'hotcue_' + x + '_activate', type: 'binary' },
        'clear': { group: '[' + type + i + ']', name: 'hotcue_' + x + '_clear', type: 'binary' },
        'enabled': { group: '[' + type + i + ']', name: 'hotcue_' + x + '_enabled', type: 'read-only, binary' },
        'goto': { group: '[' + type + i + ']', name: 'hotcue_' + x + '_goto', type: 'binary' },
        'gotoandplay': { group: '[' + type + i + ']', name: 'hotcue_' + x + '_gotoandplay', type: 'binary' },
        'gotoandstop': { group: '[' + type + i + ']', name: 'hotcue_' + x + '_gotoandstop', type: 'binary' },
        'position': { group: '[' + type + i + ']', name: 'hotcue_' + x + '_position', type: 'positive integer' },
        'set': { group: '[' + type + i + ']', name: 'hotcue_' + x + '_set', type: 'binary' }
      };
    },
    'key': { group: '[' + type + i + ']', name: 'key', type: 'real-valued' },
    'keylock': { group: '[' + type + i + ']', name: 'keylock', type: 'binary' },
    'LoadSelectedTrack': { group: '[' + type + i + ']', name: 'LoadSelectedTrack', type: 'binary' },
    'LoadSelectedTrackAndPlay': { group: '[' + type + i + ']', name: 'LoadSelectedTrackAndPlay', type: 'binary' },
    'loop_double': { group: '[' + type + i + ']', name: 'loop_double', type: 'binary' },
    'loop_enabled': { group: '[' + type + i + ']', name: 'loop_enabled', type: 'read-only, binary' },
    'loop_end_position': { group: '[' + type + i + ']', name: 'loop_end_position', type: 'positive integer' },
    'loop_halve': { group: '[' + type + i + ']', name: 'loop_halve', type: 'binary' },
    'loop_in': { group: '[' + type + i + ']', name: 'loop_in', type: 'binary' },
    'loop_out': { group: '[' + type + i + ']', name: 'loop_out', type: 'binary' },
    'loop_move': { group: '[' + type + i + ']', name: 'loop_move', type: 'real number' },
    'loop_scale': { group: '[' + type + i + ']', name: 'loop_scale', type: '0.0 - infinity' },
    'loop_start_position': { group: '[' + type + i + ']', name: 'loop_start_position', type: 'positive integer' },
    'orientation': { group: '[' + type + i + ']', name: 'orientation', type: '0-2' },
    'passthrough': { group: '[' + type + i + ']', name: 'passthrough', type: 'binary' },
    'PeakIndicator': { group: '[' + type + i + ']', name: 'PeakIndicator', type: 'binary' },
    'pfl': { group: '[' + type + i + ']', name: 'pfl', type: 'binary' },
    'pitch': { group: '[' + type + i + ']', name: 'pitch', type: '-6.0..6.0' },
    'pitch_adjust': { group: '[' + type + i + ']', name: 'pitch_adjust', type: '-3.0..3.0' },
    'play': { group: '[' + type + i + ']', name: 'play', type: 'binary' },
    'play_indicator': { group: '[' + type + i + ']', name: 'play_indicator', type: 'binary' },
    'play_stutter': { group: '[' + type + i + ']', name: 'play_stutter', type: 'binary' },
    'playposition': { group: '[' + type + i + ']', name: 'playposition', type: 'default' },
    'pregain': { group: '[' + type + i + ']', name: 'pregain', type: '0.0..1.0..4.0' },
    'quantize': { group: '[' + type + i + ']', name: 'quantize', type: 'binary' },
    'rate': { group: '[' + type + i + ']', name: 'rate', type: '-1.0..1.0' },
    'rate_dir': { group: '[' + type + i + ']', name: 'rate_dir', type: '-1 or 1' },
    'rate_perm_down': { group: '[' + type + i + ']', name: 'rate_perm_down', type: 'binary' },
    'rate_perm_down_small': { group: '[' + type + i + ']', name: 'rate_perm_down_small', type: 'binary' },
    'rate_perm_up': { group: '[' + type + i + ']', name: 'rate_perm_up', type: 'binary' },
    'rate_perm_up_small': { group: '[' + type + i + ']', name: 'rate_perm_up_small', type: 'binary' },
    'rate_temp_down': { group: '[' + type + i + ']', name: 'rate_temp_down', type: 'binary' },
    'rate_temp_down_small': { group: '[' + type + i + ']', name: 'rate_temp_down_small', type: 'binary' },
    'rate_temp_up': { group: '[' + type + i + ']', name: 'rate_temp_up', type: 'binary' },
    'rate_temp_up_small': { group: '[' + type + i + ']', name: 'rate_temp_up_small', type: 'binary' },
    'rateRange': { group: '[' + type + i + ']', name: 'rateRange', type: '0.0..3.0' },
    'reloop_exit': { group: '[' + type + i + ']', name: 'reloop_exit', type: 'binary' },
    'repeat': { group: '[' + type + i + ']', name: 'repeat', type: 'binary' },
    'reset_key': { group: '[' + type + i + ']', name: 'reset_key', type: 'binary' },
    'reverse': { group: '[' + type + i + ']', name: 'reverse', type: 'binary' },
    'reverseroll': { group: '[' + type + i + ']', name: 'reverseroll', type: 'binary' },
    'slip_enabled': { group: '[' + type + i + ']', name: 'slip_enabled', type: 'binary' },
    'start': { group: '[' + type + i + ']', name: 'start', type: 'binary' },
    'start_play': { group: '[' + type + i + ']', name: 'start_play', type: 'binary' },
    'start_stop': { group: '[' + type + i + ']', name: 'start_stop', type: 'binary' },
    'stop': { group: '[' + type + i + ']', name: 'stop', type: 'binary' },
    'sync_enabled': { group: '[' + type + i + ']', name: 'sync_enabled', type: 'binary' },
    'sync_master': { group: '[' + type + i + ']', name: 'sync_master', type: 'binary' },
    'sync_mode': { group: '[' + type + i + ']', name: 'sync_mode', type: 'binary' },
    'sync_key': { group: '[' + type + i + ']', name: 'sync_key', type: '?' },
    'track_samplerate': { group: '[' + type + i + ']', name: 'track_samplerate', type: 'absolute value' },
    'track_samples': { group: '[' + type + i + ']', name: 'track_samples', type: 'absolute value' },
    'volume': { group: '[' + type + i + ']', name: 'volume', type: 'default' },
    'mute': { group: '[' + type + i + ']', name: 'mute', type: 'binary' },
    'vinylcontrol_enabled': { group: '[' + type + i + ']', name: 'vinylcontrol_enabled', type: 'binary' },
    'vinylcontrol_cueing': { group: '[' + type + i + ']', name: 'vinylcontrol_cueing', type: '0.0-2.0' },
    'vinylcontrol_mode': { group: '[' + type + i + ']', name: 'vinylcontrol_mode', type: '0.0-2.0' },
    'vinylcontrol_status': { group: '[' + type + i + ']', name: 'vinylcontrol_status', type: '0.0-3.0 (read-only)' },
    'visual_bpm': { group: '[' + type + i + ']', name: 'visual_bpm', type: '?' },
    'visual_key': { group: '[' + type + i + ']', name: 'visual_key', type: '?' },
    'visual_key_distance': { group: '[' + type + i + ']', name: 'visual_key_distance', type: '-0.5..0.5' },
    'VuMeter': { group: '[' + type + i + ']', name: 'VuMeter', type: 'default' },
    'VuMeterL': { group: '[' + type + i + ']', name: 'VuMeterL', type: 'default' },
    'VuMeterR': { group: '[' + type + i + ']', name: 'VuMeterR', type: 'default' },
    'waveform_zoom': { group: '[' + type + i + ']', name: 'waveform_zoom', type: '1.0 - 6.0' },
    'waveform_zoom_up': { group: '[' + type + i + ']', name: 'waveform_zoom_up', type: '?' },
    'waveform_zoom_down': { group: '[' + type + i + ']', name: 'waveform_zoom_down', type: '?' },
    'waveform_zoom_set_default': { group: '[' + type + i + ']', name: 'waveform_zoom_set_default', type: '?' },
    'wheel': { group: '[' + type + i + ']', name: 'wheel', type: '-3.0..3.0' }
  };
};

var beatjumps = [0.03125, 0.0625, 0.125, 0.25, 0.5, 1, 2, 4, 8, 16, 32, 64];
var beatloops = beatjumps;

var createEnumeratedControl = function createEnumeratedControl(array, one) {
  return array.reduce(function (arr, i) {
    var def = one(i);
    var control = Object.keys(def).reduce(function (obj, key) {
      return assign(obj, defineProperty({}, key, new Control(def[key])));
    }, {});
    return assign(arr, defineProperty({}, i, control));
  }, {});
};

var createChannelControl = function createChannelControl(i) {
  var _ref = i < 5 ? ['Channel', i] : ['Sampler', i - 4],
      _ref2 = slicedToArray(_ref, 2),
      name = _ref2[0],
      number = _ref2[1];

  var channelDefInstance = channelDef(name, number);
  var channel = Object.keys(channelDefInstance).filter(function (key) {
    return key !== 'beatjumps' && key !== 'beatloops' && key !== 'hotcues';
  }).reduce(function (obj, key) {
    return assign(obj, defineProperty({}, key, new Control(channelDefInstance[key])));
  }, {});
  return assign(channel, {
    'beatjumps': createEnumeratedControl(beatjumps, channelDefInstance.beatjumps),
    'beatloops': createEnumeratedControl(beatloops, channelDefInstance.beatloops),
    'hotcues': createEnumeratedControl(range(16).map(function (x) {
      return x + 1;
    }), channelDefInstance.hotcues)
  });
};

var channelControls = range(8).map(function (i) {
  return createChannelControl(i + 1);
});

var callbackPrefix$1 = '__ctrl';

var sanitize = function sanitize(name) {
  return name.replace('.', '$dot$').replace('[', '$sbs$').replace(']', '$sbe$');
};

var ControlBus = function () {
  createClass(ControlBus, null, [{
    key: 'create',
    value: function create(moduleName, registry) {
      return new ControlBus(moduleName, registry);
    }
  }]);

  function ControlBus(registryName, registry) {
    classCallCheck(this, ControlBus);

    this._registryName = registryName;
    this._registry = registry;
    this._callbackList = {};
  }

  createClass(ControlBus, [{
    key: 'connect',
    value: function connect(id, control, cb) {
      var _this = this;

      var group = control.group,
          name = control.name;

      var key = sanitize(group) + '_' + sanitize(name);
      var engineCb = callbackPrefix$1 + '_' + key;

      if (!this._callbackList[key]) {
        this._callbackList[key] = {};
      }
      this._callbackList[key][id] = cb;

      if (!this._registry[engineCb]) {
        this._registry[engineCb] = function (value) {
          for (var _id in _this._callbackList[key]) {
            _this._callbackList[key][_id]({ value: value, control: control, id: _id });
          }
        };
        engine_1.connectControl(group, name, this._registryName + '.' + engineCb);
      }
      return { id: id, group: group, name: name, key: key };
    }
  }, {
    key: 'disconnect',
    value: function disconnect(handle) {
      var id = handle.id,
          group = handle.group,
          name = handle.name,
          key = handle.key;

      var engineCb = callbackPrefix$1 + '_' + key;

      if (this._callbackList[key] && this._callbackList[key][id]) {
        delete this._callbackList[key][id];
      }

      if (!Object.keys(this._callbackList[key]).length && this._registry[engineCb]) {
        engine_1.connectControl(group, name, this._registryName + '.' + engineCb, true);
        delete this._callbackList[key];
        delete this._registry[engineCb];
      }
    }
  }]);
  return ControlBus;
}();

var timerPrefix = '__timer';

var makeTimer = function makeTimer(moduleName, registry) {
  return function (task) {
    return new Timer(moduleName, registry, task);
  };
};

var Timer = function () {
  function Timer(registryName, registry, task) {
    classCallCheck(this, Timer);

    this._registryName = registryName;
    this._registry = registry;
    this.task = task;
    this._state = undefined;
  }

  createClass(Timer, [{
    key: 'start',
    value: function start(interval) {
      if (this._state == null) {
        var _started = Date.now();
        var _key = timerPrefix + '_' + _started + '_' + parseInt(Math.random() * 100);
        var _handle = engine_1.beginTimer(interval, this._registryName + '.' + _key);
        this._state = { handle: _handle, key: _key, started: _started };
        this._registry[_key] = this.task;
        return _started;
      }
    }
  }, {
    key: 'end',
    value: function end() {
      var state = this._state;
      if (state != null) {
        engine_1.stopTimer(state.handle);
        delete this._registry[state.key];
        this._state = undefined;
      }
    }
  }, {
    key: 'restart',
    value: function restart(interval) {
      if (this._state != null) {
        this.end();
        return this.start(interval);
      }
    }
  }, {
    key: 'getStartTime',
    value: function getStartTime() {
      return this._state && this._state.started;
    }
  }]);
  return Timer;
}();

var Component = function (_EventEmitter) {
  inherits(Component, _EventEmitter);

  function Component() {
    classCallCheck(this, Component);
    return possibleConstructorReturn(this, (Component.__proto__ || Object.getPrototypeOf(Component)).apply(this, arguments));
  }

  createClass(Component, [{
    key: 'mount',
    value: function mount() {
      this.onMount(this);
      this.emit('mount', this);
    }
  }, {
    key: 'unmount',
    value: function unmount() {
      this.onUnmount(this);
      this.emit('unmount', this);
    }
  }, {
    key: 'onMount',
    value: function onMount() {}
  }, {
    key: 'onUnmount',
    value: function onUnmount() {}
  }]);
  return Component;
}(index$1);

var prevPlaylistBtn = Buttons.vol;
var nextPlaylistBtn = Buttons.pan;
var toggleItemBtn = Buttons.snda;
var prevTrackBtn = Buttons.sndb;
var nextTrackBtn = Buttons.stop;

var autoscrolled = function autoscrolled(binding) {
  return function (timerBuilder) {
    var started = void 0;
    var minInterval = 32;
    var interval = void 0;
    var timer = void 0;

    binding.on('midi', function (data) {
      if (data.value) {
        interval = 250;
        started = timer.start(interval);
      } else {
        timer.end();
      }
    });

    binding.on('mount', function () {
      timer = timerBuilder(function () {
        binding.emit('scroll');
        if (interval > minInterval) {
          var current = Date.now();
          // silence Flow with unsafe casts
          if (interval === 250 && current - started > 1500) {
            interval = 125;
            timer.restart(interval);
          } else if (interval === 125 && current - started > 3000) {
            interval = 63;
            timer.restart(interval);
          } else if (interval === 63 && current - started > 6000) {
            interval = minInterval;
            timer.restart(interval);
          }
        }
      });
    });

    binding.on('unmount', function () {
      timer.end();
    });

    return binding;
  };
};

var onScroll = function onScroll(control) {
  return function () {
    control.setValue(1);
  };
};

var onMidi = function onMidi(control) {
  return function (_ref) {
    var value = _ref.value,
        button = _ref.button;

    if (value) {
      control.setValue(1);
      button.sendColor(colors.hi_red);
    } else {
      button.sendColor(colors.hi_yellow);
    }
  };
};

var onMount = function onMount(_ref2) {
  var button = _ref2.button;

  button.sendColor(colors.hi_yellow);
};

var onUnmount = function onUnmount(_ref3) {
  var button = _ref3.button;

  button.sendColor(colors.black);
};

var PlaylistSidebar = function (_Component) {
  inherits(PlaylistSidebar, _Component);

  function PlaylistSidebar(buttons) {
    classCallCheck(this, PlaylistSidebar);

    var _this = possibleConstructorReturn(this, (PlaylistSidebar.__proto__ || Object.getPrototypeOf(PlaylistSidebar)).call(this));

    _this.buttons = buttons;
    return _this;
  }

  createClass(PlaylistSidebar, [{
    key: 'onMount',
    value: function onMount() {
      this.buttons.forEach(function (button) {
        return button.mount();
      });
    }
  }, {
    key: 'onUnmount',
    value: function onUnmount() {
      this.buttons.forEach(function (button) {
        return button.unmount();
      });
    }
  }]);
  return PlaylistSidebar;
}(Component);

var makePlaylistSidebar = function makePlaylistSidebar(timerBuilder) {
  return function (midiComponentBuilder) {
    var btns = [midiComponentBuilder(prevPlaylistBtn), midiComponentBuilder(nextPlaylistBtn), midiComponentBuilder(toggleItemBtn), midiComponentBuilder(prevTrackBtn), midiComponentBuilder(nextTrackBtn)];

    var prevPlaylist = autoscrolled(btns[0])(timerBuilder);
    var nextPlaylist = autoscrolled(btns[1])(timerBuilder);
    var toggleItem = btns[2];
    var prevTrack = autoscrolled(btns[3])(timerBuilder);
    var nextTrack = autoscrolled(btns[4])(timerBuilder);

    prevPlaylist.on('scroll', onScroll(playListControl.SelectPrevPlaylist));
    prevPlaylist.on('midi', onMidi(playListControl.SelectPrevPlaylist));
    prevPlaylist.on('mount', onMount);
    prevPlaylist.on('unmount', onUnmount);

    nextPlaylist.on('scroll', onScroll(playListControl.SelectNextPlaylist));
    nextPlaylist.on('midi', onMidi(playListControl.SelectNextPlaylist));
    nextPlaylist.on('mount', onMount);
    nextPlaylist.on('unmount', onUnmount);

    prevTrack.on('scroll', onScroll(playListControl.SelectPrevTrack));
    prevTrack.on('midi', onMidi(playListControl.SelectPrevTrack));
    prevTrack.on('mount', onMount);
    prevTrack.on('unmount', onUnmount);

    nextTrack.on('scroll', onScroll(playListControl.SelectNextTrack));
    nextTrack.on('midi', onMidi(playListControl.SelectNextTrack));
    nextTrack.on('mount', onMount);
    nextTrack.on('unmount', onUnmount);

    toggleItem.on('midi', onMidi(playListControl.ToggleSelectedSidebarItem));
    toggleItem.on('mount', onMount);
    toggleItem.on('unmount', onUnmount);

    return new PlaylistSidebar(btns);
  };
};

var ModifierSidebar = function (_Component) {
  inherits(ModifierSidebar, _Component);

  function ModifierSidebar(midiComponentBuilder) {
    classCallCheck(this, ModifierSidebar);

    var _this = possibleConstructorReturn(this, (ModifierSidebar.__proto__ || Object.getPrototypeOf(ModifierSidebar)).call(this));

    _this.shift = midiComponentBuilder(Buttons.solo);
    _this.ctrl = midiComponentBuilder(Buttons.arm);

    _this.state = {
      shift: false,
      ctrl: false
    };

    _this.listener = function (_ref) {
      var value = _ref.value,
          button = _ref.button;

      if (value) {
        button.sendColor(colors.hi_red);
      } else {
        button.sendColor(colors.black);
      }
      if (button.def.name === Buttons.solo.def.name) {
        _this.state.shift = !!value;
        _this.emit('shift', value);
      } else {
        _this.state.ctrl = !!value;
        _this.emit('ctrl', value);
      }
    };
    return _this;
  }

  createClass(ModifierSidebar, [{
    key: 'onMount',
    value: function onMount() {
      this.shift.mount();
      this.ctrl.mount();

      this.shift.on('midi', this.listener);
      this.ctrl.on('midi', this.listener);
    }
  }, {
    key: 'onUnmount',
    value: function onUnmount() {
      this.shift.removeListener('midi', this.listener);
      this.ctrl.removeListener('midi', this.listener);

      this.shift.unmount();
      this.ctrl.unmount();
    }
  }, {
    key: 'getState',
    value: function getState() {
      return this.state;
    }
  }]);
  return ModifierSidebar;
}(Component);

var makeModifierSidebar = function makeModifierSidebar(midiComponentBuilder) {
  return new ModifierSidebar(midiComponentBuilder);
};

var modes = function modes(ctx, n, c, s, cs) {
  if (ctx.shift && ctx.ctrl) {
    cs && cs();
  } else if (ctx.shift) {
    s && s();
  } else if (ctx.ctrl) {
    c && c();
  } else {
    n && n();
  }
};

var retainAttackMode = function retainAttackMode(modifier, cb) {
  var state = {
    shift: false,
    ctrl: false
  };

  return function (data) {
    if (data.value) {
      state = modifier.getState();
    }

    for (var _len = arguments.length, rest = Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
      rest[_key - 1] = arguments[_key];
    }

    return cb.apply(undefined, [state, data].concat(toConsumableArray(rest)));
  };
};

// This monstrous dynamic giant needs some serious refactor
var makePresetFromPartialTemplate = function makePresetFromPartialTemplate(id, partialTemplate, offset) {
  return function (deck) {
    return function (controlComponentBuilder) {
      return function (midiComponentBuilder) {
        return function (modifier) {
          var template$$1 = {};
          Object.keys(partialTemplate).forEach(function (k) {
            assign(template$$1, defineProperty({}, k, partialTemplate[k](deck)(modifier)));
          });
          return new Preset(controlComponentBuilder, midiComponentBuilder, modifier, id, template$$1, offset);
        };
      };
    };
  };
};

var Preset = function (_Component) {
  inherits(Preset, _Component);

  function Preset(controlComponentBuilder, midiComponentBuilder, modifier, id, template$$1, offset) {
    classCallCheck(this, Preset);

    var _this = possibleConstructorReturn(this, (Preset.__proto__ || Object.getPrototypeOf(Preset)).call(this));

    _this.preset = initTemplate(controlComponentBuilder, midiComponentBuilder, modifier, id, template$$1, offset);
    return _this;
  }

  createClass(Preset, [{
    key: 'onMount',
    value: function onMount() {
      var _preset = this.preset,
          controlBindings = _preset.controlBindings,
          buttonBindings = _preset.buttonBindings,
          controlListeners = _preset.controlListeners,
          buttonListeners = _preset.buttonListeners;

      addListeners(controlBindings, controlListeners);
      addListeners(buttonBindings, buttonListeners);
      Object.keys(controlBindings).forEach(function (k) {
        return controlBindings[k].mount();
      });
      Object.keys(buttonBindings).forEach(function (k) {
        return buttonBindings[k].mount();
      });
    }
  }, {
    key: 'onUnmount',
    value: function onUnmount() {
      var _preset2 = this.preset,
          controlBindings = _preset2.controlBindings,
          buttonBindings = _preset2.buttonBindings,
          controlListeners = _preset2.controlListeners,
          buttonListeners = _preset2.buttonListeners;

      Object.keys(controlBindings).forEach(function (k) {
        return controlBindings[k].unmount();
      });
      Object.keys(buttonBindings).forEach(function (k) {
        return buttonBindings[k].unmount();
      });
      removeListeners(controlBindings, controlListeners);
      removeListeners(buttonBindings, buttonListeners);
    }
  }]);
  return Preset;
}(Component);

var initTemplate = function initTemplate(controlComponentBuilder, midiComponentBuilder, modifier, id, template$$1, offset) {
  var controlBindings = {};
  var controlListeners = {};
  var buttonBindings = {};
  var buttonListeners = {};
  Object.keys(template$$1).forEach(function (tk) {
    if (template$$1[tk] && template$$1[tk].bindings) {
      var bindings = template$$1[tk].bindings;
      var instance = {
        state: template$$1[tk].state,
        bindings: {}
      };
      Object.keys(bindings).forEach(function (bk) {
        if (bindings[bk]) {
          var binding = bindings[bk];
          if (binding.type === 'control') {
            var name = '' + binding.target.def.group + binding.target.def.name;
            if (!controlBindings[name]) {
              controlBindings[name] = controlComponentBuilder(id + '.' + tk + '.' + bk)(binding.target);
            }
            instance.bindings[bk] = controlBindings[name];
            controlListeners[name] = controlListeners[name] || {};['update', 'mount', 'unmount'].forEach(function (action) {
              if (typeof binding[action] === 'function') {
                appendListener(action, controlListeners[name], function (data) {
                  return binding[action](data, instance, modifier);
                });
              }
            });
          } else if (binding.type === 'button') {
            var position = tr(binding.target, offset);
            var _name = nameOf(position[0], position[1]);
            if (!buttonBindings[_name]) {
              buttonBindings[_name] = midiComponentBuilder(Buttons[_name]);
            }
            instance.bindings[bk] = buttonBindings[_name];
            buttonListeners[_name] = buttonListeners[_name] || {};['attack', 'release', 'midi', 'mount', 'unmount'].forEach(function (action) {
              if (typeof binding[action] === 'function') {
                appendListener(action, buttonListeners[_name], function (data) {
                  return binding[action](data, instance);
                });
              }
            });
            if (typeof binding['unmount'] !== 'function') {
              appendListener('unmount', buttonListeners[_name], function (data) {
                instance.bindings[bk].button.sendColor(colors.black);
              });
            }
          }
        }
      });
    }
  });
  return { controlBindings: controlBindings, controlListeners: controlListeners, buttonBindings: buttonBindings, buttonListeners: buttonListeners };
};

var tr = function tr(a, b) {
  return [a[0] + b[0], a[1] + b[1]];
};

var nameOf = function nameOf(x, y) {
  return 7 - y + ',' + x;
};

var appendListener = function appendListener(type, bindings, binding) {
  if (bindings[type] && Array.isArray(bindings[type])) {
    bindings[type].push(binding);
  } else if (bindings[type]) {
    var first$$1 = bindings[type];
    bindings[type] = [first$$1, binding];
  } else {
    bindings[type] = binding;
  }
};

var addListeners = function addListeners(tgt, bindings) {
  Object.keys(bindings).forEach(function (binding) {
    if (tgt[binding]) {
      Object.keys(bindings[binding]).forEach(function (k) {
        if (Array.isArray(bindings[binding][k])) {
          bindings[binding][k].forEach(function (f) {
            tgt[binding].on(k, f);
          });
        } else {
          tgt[binding].on(k, bindings[binding][k]);
        }
      });
    }
  });
};

var removeListeners = function removeListeners(tgt, bindings) {
  Object.keys(bindings).forEach(function (binding) {
    if (tgt[binding]) {
      Object.keys(bindings[binding]).forEach(function (k) {
        if (Array.isArray(bindings[binding][k])) {
          bindings[binding][k].forEach(function (f) {
            tgt[binding].removeListener(k, f);
          });
        } else {
          tgt[binding].removeListener(k, bindings[binding][k]);
        }
      });
    }
  });
};

var play = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      return {
        bindings: {
          playIndicator: {
            type: 'control',
            target: deck.play_indicator,
            update: function update(_ref, _ref2) {
              var value = _ref.value;
              var bindings = _ref2.bindings;

              if (value) {
                bindings.play.button.sendColor(colors.hi_red);
              } else if (!value) {
                bindings.play.button.sendColor(colors.black);
              }
            }
          },
          play: {
            type: 'button',
            target: gridPosition,
            attack: function attack() {
              modes(modifier.getState(), function () {
                return deck.play.setValue(Number(!deck.play.getValue()));
              }, function () {
                return deck.start_play.setValue(1);
              }, function () {
                return deck.start_stop.setValue(1);
              });
            }
          }
        }
      };
    };
  };
});

var sync = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      return {
        bindings: {
          sync: {
            type: 'button',
            target: gridPosition,
            attack: function attack(message, _ref) {
              var bindings = _ref.bindings;

              modes(modifier.getState(), function () {
                if (bindings.syncMode.getValue()) {
                  deck.sync_enabled.setValue(0);
                } else {
                  deck.sync_enabled.setValue(1);
                }
              }, function () {
                if (bindings.syncMode.getValue() === 2) {
                  deck.sync_master.setValue(0);
                } else {
                  deck.sync_master.setValue(1);
                }
              });
            }
          },
          syncMode: {
            type: 'control',
            target: deck.sync_mode,
            update: function update(_ref2, _ref3) {
              var value = _ref2.value;
              var bindings = _ref3.bindings;

              if (value === 0) {
                bindings.sync.button.sendColor(colors.black);
              } else if (value === 1) {
                bindings.sync.button.sendColor(colors.hi_orange);
              } else if (value === 2) {
                bindings.sync.button.sendColor(colors.hi_red);
              }
            }
          }
        }
      };
    };
  };
});

var nudge = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      var rateEpsilon = 1e-3;

      var getDirection = function getDirection(rate) {
        if (rate < -rateEpsilon) {
          return 'down';
        } else if (rate > rateEpsilon) {
          return 'up';
        } else {
          return '';
        }
      };

      var onNudgeMidi = function onNudgeMidi(dir) {
        return function (modifier) {
          return retainAttackMode(modifier, function (mode, _ref, _ref2) {
            var value = _ref.value;
            var bindings = _ref2.bindings,
                state = _ref2.state;

            if (value) {
              state[dir].pressing = true;
              if (state.down.pressing && state.up.pressing) {
                deck.rate.setValue(0);
              } else {
                modes(mode, function () {
                  state[dir].nudging = true;
                  bindings[dir].button.sendColor(colors.hi_yellow);
                  // TODO: remove unsafe cast once flow supports https://github.com/facebook/flow/issues/3637
                  deck['rate_temp_' + dir].setValue(1);
                }, function () {
                  bindings[dir].button.sendColor(colors.hi_red);
                  // TODO: remove unsafe cast once flow supports https://github.com/facebook/flow/issues/3637
                  deck['rate_perm_' + dir].setValue(1);
                }, function () {
                  state[dir].nudging = true;
                  bindings[dir].button.sendColor(colors.lo_yellow);
                  // TODO: remove unsafe cast once flow supports https://github.com/facebook/flow/issues/3637
                  deck['rate_temp_' + dir + '_small'].setValue(1);
                }, function () {
                  bindings[dir].button.sendColor(colors.lo_red);
                  // TODO: remove unsafe cast once flow supports https://github.com/facebook/flow/issues/3637
                  deck['rate_perm_' + dir + '_small'].setValue(1);
                });
              }
            } else {
              state[dir].nudging = state[dir].pressing = false;
              if (getDirection(bindings.rate.getValue()) === dir) {
                bindings[dir].button.sendColor(colors.lo_amber);
              } else {
                bindings[dir].button.sendColor(colors.black);
              }
              modes(mode,
              // TODO: remove unsafe cast once flow supports https://github.com/facebook/flow/issues/3637
              function () {
                return deck['rate_temp_' + dir].setValue(0);
              }, undefined,
              // TODO: remove unsafe cast once flow supports https://github.com/facebook/flow/issues/3637
              function () {
                return deck['rate_temp_' + dir + '_small'].setValue(0);
              });
            }
          });
        };
      };

      var onRate = function onRate(_ref3, _ref4) {
        var value = _ref3.value;
        var state = _ref4.state,
            bindings = _ref4.bindings;

        var up = colors.black;
        var down = colors.black;
        if (value < -rateEpsilon) {
          down = colors.lo_green;
        } else if (value > rateEpsilon) {
          up = colors.lo_green;
        }

        if (!state.down.nudging) {
          bindings.down.button.sendColor(down);
        }

        if (!state.up.nudging) {
          bindings.up.button.sendColor(up);
        }
      };

      return {
        bindings: {
          down: {
            type: 'button',
            target: gridPosition,
            midi: onNudgeMidi('down')(modifier)
          },
          up: {
            type: 'button',
            target: [gridPosition[0] + 1, gridPosition[1]],
            midi: onNudgeMidi('up')(modifier)
          },
          rate: {
            type: 'control',
            target: deck.rate,
            update: onRate
          }
        },
        state: {
          rateEpsilon: rateEpsilon,
          up: {
            pressing: false,
            nudging: false
          },
          down: {
            pressing: false,
            nudging: false
          }
        }
      };
    };
  };
});

var cue = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      return {
        bindings: {
          cue: {
            type: 'button',
            target: gridPosition,
            midi: retainAttackMode(modifier, function (mode, _ref) {
              var value = _ref.value;

              modes(mode, function () {
                if (value) {
                  deck.cue_default.setValue(1);
                } else {
                  deck.cue_default.setValue(0);
                }
              }, function () {
                return value && deck.cue_set.setValue(1);
              });
            })
          },
          cueIndicator: {
            type: 'control',
            target: deck.cue_indicator,
            update: function update(_ref2, _ref3) {
              var value = _ref2.value;
              var bindings = _ref3.bindings;

              if (value) {
                bindings.cue.button.sendColor(colors.hi_red);
              } else if (!value) {
                bindings.cue.button.sendColor(colors.black);
              }
            }
          }
        }
      };
    };
  };
});

var Bpm = function (_EventEmitter) {
  inherits(Bpm, _EventEmitter);

  function Bpm(max) {
    classCallCheck(this, Bpm);

    var _this = possibleConstructorReturn(this, (Bpm.__proto__ || Object.getPrototypeOf(Bpm)).call(this));

    if (max == null) {
      max = 8;
    }
    _this.tapTime = 0;
    _this.taps = [];
    _this.max = max;
    return _this;
  }

  createClass(Bpm, [{
    key: 'reset',
    value: function reset() {
      this.taps = [];
    }
  }, {
    key: 'tap',
    value: function tap() {
      var now = Date.now();
      var tapDelta = now - this.tapTime;
      this.tapTime = now;
      if (tapDelta > 2000) {
        // reset if longer than two seconds between taps
        this.taps = [];
      } else {
        this.taps.push(60000 / tapDelta);
        if (this.taps.length > this.max) this.taps.shift(); // Keep the last n samples for averaging
        var sum = 0;
        this.taps.forEach(function (v) {
          sum += v;
        });
        var avg = sum / this.taps.length;
        this.emit('tap', avg);
      }
    }
  }]);
  return Bpm;
}(index$1);

var tap$2 = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      var tempoBpm = new Bpm();
      tempoBpm.on('tap', function (avg) {
        deck.bpm.setValue(avg);
      });
      return {
        bindings: {
          tap: {
            type: 'button',
            target: gridPosition,
            attack: function attack() {
              modes(modifier.getState(), function () {
                tempoBpm.tap();
              }, undefined, function () {
                deck.beats_translate_curpos.setValue(1);
              }, function () {
                deck.beats_translate_match_alignment.setValue(1);
              });
            }
          },
          beat: {
            type: 'control',
            target: deck.beat_active,
            update: function update(_ref, _ref2) {
              var value = _ref.value;
              var bindings = _ref2.bindings;

              if (value) {
                bindings.tap.button.sendColor(colors.hi_red);
              } else {
                bindings.tap.button.sendColor(colors.black);
              }
            }
          }
        }
      };
    };
  };
});

var grid = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      var onGrid = function onGrid(dir) {
        return function (_ref, _ref2) {
          var value = _ref.value;
          var bindings = _ref2.bindings,
              state = _ref2.state;

          if (!value) {
            bindings[dir].button.sendColor(colors.black);
          } else {
            modes(modifier.getState(), function () {
              bindings[dir].button.sendColor(colors.hi_yellow);
              state[dir].normal.setValue(1);
            }, function () {
              bindings[dir].button.sendColor(colors.hi_amber);
              state[dir].ctrl.setValue(1);
            });
          }
        };
      };
      return {
        bindings: {
          back: {
            type: 'button',
            target: gridPosition,
            midi: onGrid('back')
          },
          forth: {
            type: 'button',
            target: [gridPosition[0] + 1, gridPosition[1]],
            midi: onGrid('forth')
          }
        },
        state: {
          back: {
            normal: deck.beats_translate_earlier,
            ctrl: deck.beats_adjust_slower
          },
          forth: {
            normal: deck.beats_translate_later,
            ctrl: deck.beats_adjust_faster
          }
        }
      };
    };
  };
});

var pfl = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      return {
        bindings: {
          pfl: {
            type: 'control',
            target: deck.pfl,
            update: function update(_ref, _ref2) {
              var value = _ref.value;
              var bindings = _ref2.bindings;
              return value ? bindings.button.button.sendColor(colors.hi_green) : bindings.button.button.sendColor(colors.black);
            }
          },
          button: {
            type: 'button',
            target: gridPosition,
            attack: function attack(message, _ref3) {
              var bindings = _ref3.bindings;
              return modes(modifier.getState(), function () {
                return bindings.pfl.setValue(Number(!bindings.pfl.getValue()));
              });
            }
          }
        }
      };
    };
  };
});

var quantize = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      return {
        bindings: {
          quantize: {
            type: 'control',
            target: deck.quantize,
            update: function update(_ref, _ref2) {
              var value = _ref.value;
              var bindings = _ref2.bindings;
              return value ? bindings.button.button.sendColor(colors.hi_orange) : bindings.button.button.sendColor(colors.black);
            }
          },
          button: {
            type: 'button',
            target: gridPosition,
            attack: function attack(message, _ref3) {
              var bindings = _ref3.bindings;
              return modes(modifier.getState(), function () {
                return bindings.quantize.setValue(Number(!bindings.quantize.getValue()));
              });
            }
          }
        }
      };
    };
  };
});

var keyshift = (function (shifts, d) {
  return function (gridPosition) {
    return function (deck) {
      return function (modifier) {
        var bindings = {};

        var temporaryChange = function temporaryChange(i, value, bindings, state) {
          if (value) {
            var base = state.on === -1 ? deck.key.getValue() : state.base;
            if (state.on !== -1) {
              bindings[state.on].button.sendColor(colors['lo_' + state.color[state.set]]);
            }
            bindings[i].button.sendColor(colors['hi_' + state.color[state.set]]);
            deck.key.setValue((base + shifts[i][state.set]) % 12 + 12);
            state.on = i;
            state.base = base;
          } else {
            if (state.on === i) {
              bindings[i].button.sendColor(colors['lo_' + state.color[state.set]]);
              deck.key.setValue(state.base);
              state.on = -1;
            }
          }
        };

        var onMidi = function onMidi(i) {
          return function (modifier) {
            return retainAttackMode(modifier, function (mode, _ref, _ref2) {
              var value = _ref.value;
              var bindings = _ref2.bindings,
                  state = _ref2.state;

              modes(mode, function () {
                return temporaryChange(i, value, bindings, state);
              }, function () {
                if (value) {
                  if (state.set === 1) {
                    state.set = 0;
                    for (var _i = 0; _i < shifts.length; ++_i) {
                      bindings[_i].button.sendColor(colors['lo_' + state.color[state.set]]);
                    }
                  }
                }
              }, function () {
                if (value) {
                  if (state.set === 0) {
                    state.set = 1;
                    for (var _i2 = 0; _i2 < shifts.length; ++_i2) {
                      bindings[_i2].button.sendColor(colors['lo_' + state.color[state.set]]);
                    }
                  }
                }
              });
            });
          };
        };

        shifts.forEach(function (s, i) {
          var dx = i % d;
          var dy = ~~(i / d);
          var position = [gridPosition[0] + dx, gridPosition[1] + dy];
          bindings[i] = {
            type: 'button',
            target: position,
            midi: onMidi(i)(modifier),
            mount: function mount(dontKnow, _ref3) {
              var bindings = _ref3.bindings,
                  state = _ref3.state;

              bindings[i].button.sendColor(colors['lo_' + state.color[state.set]]);
            }
          };
        });
        return {
          bindings: bindings,
          state: {
            on: -1,
            base: null,
            set: 0,
            color: ['green', 'red']
          }
        };
      };
    };
  };
});

var hotcue = (function (n, d) {
  var s = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 0;
  return function (gridPosition) {
    return function (deck) {
      return function (modifier) {
        var onHotcueMidi = function onHotcueMidi(i) {
          return function (_ref, _ref2) {
            var value$$1 = _ref.value;
            var bindings = _ref2.bindings;

            modes(modifier.getState(), function () {
              if (value$$1) {
                deck.hotcues[1 + i + s].activate.setValue(1);
              } else {
                deck.hotcues[1 + i + s].activate.setValue(0);
              }
            }, function () {
              if (value$$1) {
                if (bindings[i + '.enabled'].getValue()) {
                  deck.hotcues[1 + i + s].clear.setValue(1);
                } else {
                  deck.hotcues[1 + i + s].set.setValue(1);
                }
              }
            });
          };
        };
        var onHotcueEnabled = function onHotcueEnabled(i) {
          return function (_ref3, _ref4) {
            var value$$1 = _ref3.value;
            var bindings = _ref4.bindings;

            if (value$$1) {
              bindings[i + '.btn'].button.sendColor(colors.lo_yellow);
            } else {
              bindings[i + '.btn'].button.sendColor(colors.black);
            }
          };
        };
        var bindings = {};
        range(n).map(function (i) {
          var dx = i % d;
          var dy = ~~(i / d);
          bindings[i + '.btn'] = {
            type: 'button',
            target: [gridPosition[0] + dx, gridPosition[1] + dy],
            midi: onHotcueMidi(i)
          };
          bindings[i + '.enabled'] = {
            type: 'control',
            target: deck.hotcues[1 + i + s].enabled,
            update: onHotcueEnabled(i)
          };
        });
        return {
          bindings: bindings
        };
      };
    };
  };
});

var load = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      var onStateChanged = function onStateChanged(loaded, playing, bindings) {
        if (loaded && playing) {
          bindings.button.button.sendColor(colors.lo_red);
        } else if (loaded) {
          bindings.button.button.sendColor(colors.lo_yellow);
        } else {
          bindings.button.button.sendColor(colors.lo_green);
        }
      };
      return {
        bindings: {
          samples: {
            type: 'control',
            target: deck.track_samples,
            update: function update(_ref, _ref2) {
              var value = _ref.value;
              var bindings = _ref2.bindings;
              return onStateChanged(value, bindings.play.getValue(), bindings);
            }
          },
          play: {
            type: 'control',
            target: deck.play,
            update: function update(_ref3, _ref4) {
              var value = _ref3.value;
              var bindings = _ref4.bindings;
              return onStateChanged(bindings.samples.getValue(), value, bindings);
            }
          },
          button: {
            type: 'button',
            target: gridPosition,
            attack: function attack(message, _ref5) {
              var bindings = _ref5.bindings;

              modes(modifier.getState(), function () {
                if (!bindings.samples.getValue()) {
                  deck.LoadSelectedTrack.setValue(1);
                }
              }, function () {
                return deck.LoadSelectedTrack.setValue(1);
              }, function () {
                return deck.eject.setValue(1);
              });
            }
          }
        }
      };
    };
  };
});

var key = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      return {
        bindings: {
          button: {
            type: 'button',
            target: gridPosition,
            attack: function attack(message, _ref) {
              var bindings = _ref.bindings;

              modes(modifier.getState(), function () {
                bindings.keylock.setValue(Number(!bindings.keylock.getValue()));
              }, function () {
                deck.key.setValue(deck.key.getValue() - 1);
              }, function () {
                deck.key.setValue(deck.key.getValue() + 1);
              }, function () {
                deck.reset_key.setValue(1);
              });
            }
          },
          keylock: {
            type: 'control',
            target: deck.keylock,
            update: function update(_ref2, _ref3) {
              var value = _ref2.value;
              var bindings = _ref3.bindings;

              if (value) {
                bindings.button.button.sendColor(colors.hi_red);
              } else {
                bindings.button.button.sendColor(colors.black);
              }
            }
          }
        }
      };
    };
  };
});

var beatjump = (function (jumps, vertical) {
  return function (gridPosition) {
    return function (deck) {
      return function (modifier) {
        var bindings = {};
        var onMidi = function onMidi(k, j, d) {
          return function (modifier) {
            return retainAttackMode(modifier, function (mode, _ref, _ref2) {
              var value$$1 = _ref.value;
              var bindings = _ref2.bindings,
                  state = _ref2.state;

              modes(mode, function () {
                if (!state.mode) {
                  if (value$$1) {
                    deck.beatjump.setValue(j[state.set] * d);
                  }
                } else {
                  if (value$$1) {
                    var currentJump = j[state.set] * d;
                    deck.beatjump.setValue(currentJump);
                    if (state.pressing != null) {
                      bindings[state.pressing].button.sendColor(colors['lo_' + state.color[state.set]]);
                    }
                    bindings[k].button.sendColor(colors['hi_' + state.color[state.set]]);
                    state.pressing = k;
                    state.diff = state.diff + currentJump;
                  } else {
                    if (state.pressing === k) {
                      bindings[k].button.sendColor(colors['lo_' + state.color[state.set]]);
                      state.pressing = null;
                      deck.beatjump.setValue(-state.diff);
                      state.diff = 0;
                    }
                  }
                }
              }, function () {
                if (value$$1) {
                  if (state.set === 1) {
                    state.set = 0;
                    var prefix = state.mode ? 'lo' : 'hi';
                    for (var b = 0; b < spec.length; ++b) {
                      bindings[b].button.sendColor(colors[prefix + '_' + state.color[state.set]]);
                    }
                  }
                }
              }, function () {
                if (value$$1) {
                  if (state.set === 0) {
                    state.set = 1;
                    var prefix = state.mode ? 'lo' : 'hi';
                    for (var b = 0; b < spec.length; ++b) {
                      bindings[b].button.sendColor(colors[prefix + '_' + state.color[state.set]]);
                    }
                  }
                }
              }, function () {
                if (value$$1) {
                  state.mode = !state.mode;
                  var prefix = state.mode ? 'lo' : 'hi';
                  for (var b = 0; b < spec.length; ++b) {
                    bindings[b].button.sendColor(colors[prefix + '_' + state.color[state.set]]);
                  }
                }
              });
            });
          };
        };
        var onMount = function onMount(k) {
          return function (dontKnow, _ref3) {
            var bindings = _ref3.bindings,
                state = _ref3.state;

            var prefix = state.mode ? 'lo' : 'hi';
            bindings[k].button.sendColor(colors[prefix + '_' + state.color[state.set]]);
          };
        };
        var spec = flatMap(jumps, function (j, i) {
          return [[j, -1], [j, 1]];
        });

        spec.forEach(function (_ref4, i) {
          var _ref5 = slicedToArray(_ref4, 2),
              jump = _ref5[0],
              dir = _ref5[1];

          bindings[i] = {
            type: 'button',
            target: vertical ? [gridPosition[0] + i % 2, gridPosition[1] + ~~(i / 2)] : [gridPosition[0] + ~~(i / 2), gridPosition[1] + i % 2],
            midi: onMidi(i, jump, dir)(modifier),
            mount: onMount(i)
          };
        });
        return {
          bindings: bindings,
          state: {
            mode: false,
            pressing: 0,
            diff: 0,
            set: 0,
            color: ['green', 'red']
          }
        };
      };
    };
  };
});

var beatloop = (function (loops, d) {
  return function (gridPosition) {
    return function (deck) {
      return function (modifier) {
        var bindings = {};
        var onAttack = function onAttack(l) {
          return function (modifier) {
            return function () {
              modes(modifier.getState(), function () {
                return deck.beatloops[l].toggle.setValue(1);
              });
            };
          };
        };

        var onUpdate = function onUpdate(i) {
          return function (_ref, _ref2) {
            var value = _ref.value;
            var bindings = _ref2.bindings;

            if (value) {
              bindings[i].button.sendColor(colors.hi_red);
            } else {
              bindings[i].button.sendColor(colors.lo_red);
            }
          };
        };

        loops.forEach(function (loop, i) {
          var dx = i % d;
          var dy = ~~(i / d);
          bindings[i] = {
            type: 'button',
            target: [gridPosition[0] + dx, gridPosition[1] + dy],
            attack: onAttack(loop)(modifier)
          };
          bindings[loop + '.enabled'] = {
            type: 'control',
            target: deck.beatloops[loop].enabled,
            update: onUpdate(i)
          };
        });
        return {
          bindings: bindings
        };
      };
    };
  };
});

var loopjump = function loopjump(jumps) {
  return function (gridPosition) {
    return function (deck) {
      return function (modifier) {
        var bindings = {};
        var onMidi = function onMidi(k, j, d) {
          return function (modifier) {
            return retainAttackMode(modifier, function (mode, _ref, _ref2) {
              var value$$1 = _ref.value;
              var bindings = _ref2.bindings,
                  state = _ref2.state;

              modes(mode, function () {
                if (!state.mode) {
                  if (value$$1) {
                    deck.loop_move.setValue(j[state.set] * d);
                  }
                } else {
                  if (value$$1) {
                    var currentJump = j[state.set] * d;
                    deck.loop_move.setValue(currentJump);
                    if (state.pressing != null) {
                      bindings[state.pressing].button.sendColor(colors['lo_' + state.color[state.set]]);
                    }
                    bindings[k].button.sendColor(colors['hi_' + state.color[state.set]]);
                    state.pressing = k;
                    state.diff = state.diff + currentJump;
                  } else {
                    if (state.pressing === k) {
                      bindings[k].button.sendColor(colors['lo_' + state.color[state.set]]);
                      state.pressing = null;
                      deck.loop_move.setValue(-state.diff);
                      state.diff = 0;
                    }
                  }
                }
              }, function () {
                if (value$$1) {
                  if (state.set === 1) {
                    state.set = 0;
                    var prefix = state.mode ? 'lo' : 'hi';
                    for (var b = 0; b < spec.length; ++b) {
                      bindings[b].button.sendColor(colors[prefix + '_' + state.color[state.set]]);
                    }
                  }
                }
              }, function () {
                if (value$$1) {
                  if (state.set === 0) {
                    state.set = 1;
                    var prefix = state.mode ? 'lo' : 'hi';
                    for (var b = 0; b < spec.length; ++b) {
                      bindings[b].button.sendColor(colors[prefix + '_' + state.color[state.set]]);
                    }
                  }
                }
              }, function () {
                if (value$$1) {
                  state.mode = !state.mode;
                  var prefix = state.mode ? 'lo' : 'hi';
                  for (var b = 0; b < spec.length; ++b) {
                    bindings[b].button.sendColor(colors[prefix + '_' + state.color[state.set]]);
                  }
                }
              });
            });
          };
        };
        var onMount = function onMount(k) {
          return function (dontKnow, _ref3) {
            var bindings = _ref3.bindings,
                state = _ref3.state;

            var prefix = state.mode ? 'lo' : 'hi';
            bindings[k].button.sendColor(colors[prefix + '_' + state.color[state.set]]);
          };
        };
        var spec = flatMap(jumps, function (j, i) {
          return [[j, 1], [j, -1]];
        });

        spec.forEach(function (_ref4, i) {
          var _ref5 = slicedToArray(_ref4, 2),
              jump = _ref5[0],
              dir = _ref5[1];

          bindings[i] = {
            type: 'button',
            target: [gridPosition[0] + i % 2, gridPosition[1] + ~~(i / 2)],
            midi: onMidi(i, jump, dir)(modifier),
            mount: onMount(i)
          };
        });
        return {
          bindings: bindings,
          state: {
            mode: false,
            pressing: 0,
            diff: 0,
            set: 0,
            color: ['green', 'red']
          }
        };
      };
    };
  };
};

var loopjumpSmall = function loopjumpSmall(amount) {
  return function (button) {
    return function (deck) {
      return function (modifier) {
        var onAttack = function onAttack(dir) {
          return function () {
            modes(modifier.getState(), function () {
              return deck.loop_move.setValue(dir * amount);
            });
          };
        };
        return {
          bindings: {
            back: {
              type: 'button',
              target: button,
              attack: onAttack(-1),
              mount: function mount(dk, _ref6) {
                var bindings = _ref6.bindings;

                bindings.back.button.sendColor(colors.hi_yellow);
              }
            },
            forth: {
              type: 'button',
              target: [button[0] + 1, button[1]],
              attack: onAttack(1),
              mount: function mount(dk, _ref7) {
                var bindings = _ref7.bindings;

                bindings.forth.button.sendColor(colors.hi_yellow);
              }
            }
          }
        };
      };
    };
  };
};

var loopMultiply = (function (gridPosition) {
  return function (deck) {
    return function () {
      var onMount = function onMount(k) {
        return function (dk, _ref) {
          var bindings = _ref.bindings;

          bindings[k].button.sendColor(colors.lo_yellow);
        };
      };
      var onAttack = function onAttack(k) {
        return function () {
          // TODO: remove unsafe cast once flow supports https://github.com/facebook/flow/issues/3637
          deck['loop_' + k].setValue(1);
        };
      };
      return {
        bindings: {
          halve: {
            type: 'button',
            target: gridPosition,
            mount: onMount('halve'),
            attack: onAttack('halve')
          },
          double: {
            type: 'button',
            target: [gridPosition[0] + 1, gridPosition[1]],
            mount: onMount('double'),
            attack: onAttack('double')
          }
        }
      };
    };
  };
});

var reloop = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      return {
        bindings: {
          button: {
            type: 'button',
            target: gridPosition,
            attack: function attack() {
              modes(modifier.getState(), function () {
                return deck.reloop_exit.setValue(1);
              });
            }
          },
          control: {
            type: 'control',
            target: deck.loop_enabled,
            update: function update(_ref, _ref2) {
              var value = _ref.value;
              var bindings = _ref2.bindings;

              if (value) {
                bindings.button.button.sendColor(colors.hi_green);
              } else {
                bindings.button.button.sendColor(colors.lo_green);
              }
            }
          }
        }
      };
    };
  };
});

var loopIo = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      var onMidi = function onMidi(dir) {
        return function (_ref, _ref2) {
          var value = _ref.value;
          var bindings = _ref2.bindings;

          modes(modifier.getState(), function () {
            if (value) {
              // TODO: remove unsafe cast once flow supports https://github.com/facebook/flow/issues/3637
              deck['loop_' + dir].setValue(1);
              bindings[dir].button.sendColor(colors.hi_green);
            } else {
              // TODO: remove unsafe cast once flow supports https://github.com/facebook/flow/issues/3637
              deck['loop_' + dir].setValue(0);
              bindings[dir].button.sendColor(colors.black);
            }
          });
        };
      };
      return {
        bindings: {
          'in': {
            type: 'button',
            target: gridPosition,
            midi: onMidi('in')
          },
          out: {
            type: 'button',
            target: [gridPosition[0] + 1, gridPosition[1]],
            midi: onMidi('out')
          }
        }
      };
    };
  };
});

var slip = (function (gridPosition) {
  return function (deck) {
    return function (modifier) {
      var onMidi = function onMidi(modifier) {
        return retainAttackMode(modifier, function (mode, _ref, _ref2) {
          var value = _ref.value;
          var bindings = _ref2.bindings,
              state = _ref2.state;

          modes(mode, function () {
            if (value) {
              bindings.control.setValue(Number(!bindings.control.getValue()));
            } else {
              if (state.mode) {
                bindings.control.setValue(Number(!bindings.control.getValue()));
              }
            }
          }, function () {
            if (value) {
              state.mode = !state.mode;
              var color = state.mode ? 'orange' : 'red';
              bindings.button.button.sendColor(colors['lo_' + color]);
            }
          });
        });
      };
      return {
        bindings: {
          control: {
            type: 'control',
            target: deck.slip_enabled,
            update: function update(_ref3, _ref4) {
              var value = _ref3.value;
              var bindings = _ref4.bindings,
                  state = _ref4.state;

              var color = state.mode ? 'orange' : 'red';
              if (value) {
                bindings.button.button.sendColor(colors['hi_' + color]);
              } else {
                bindings.button.button.sendColor(colors['lo_' + color]);
              }
            }
          },
          button: {
            type: 'button',
            target: gridPosition,
            midi: onMidi(modifier),
            mount: function mount(dk, _ref5) {
              var bindings = _ref5.bindings,
                  state = _ref5.state;

              var color = state.mode ? 'orange' : 'red';
              bindings.button.button.sendColor(colors['lo_' + color]);
            }
          }
        },
        state: {
          mode: 1
        }
      };
    };
  };
});

var Grande = (function (controlComponentBuilder) {
  return function (midiComponentBuilder) {
    return function (modifier) {
      return function (id) {
        return function (i) {
          return function (offset) {
            var deck = channelControls[i];
            var partial = {
              play: play([0, 0]),
              sync: sync([1, 0]),
              nudge: nudge([2, 0]),
              cue: cue([0, 1]),
              tap: tap$2([1, 1]),
              grid: grid([2, 1]),
              pfl: pfl([0, 2]),
              quantize: quantize([1, 2]),
              keyshift: keyshift([[1, 1], [2, 2], [3, 3], [5, 4], [7, 5], [8, 6], [10, 7], [12, 8]], 2)([2, 2]),
              load: load([0, 3]),
              key: key([1, 3]),
              hotcue: hotcue(8, 2)([0, 4]),
              beatjump: beatjump([[0.25, 1], [0.33, 2], [0.5, 4], [0.75, 8], [1, 16], [2, 32]])([2, 6]),
              beatloop: beatloop([0.5, 1, 2, 4, 8, 16, 32, 64], 2)([4, 2]),
              loopjump: loopjump([[0.5, 8], [1, 16], [2, 32], [4, 64]])([6, 2]),
              loopjumpSmall: loopjumpSmall(0.03125)([6, 1]),
              loopMultiply: loopMultiply([4, 1]),
              reloop: reloop([4, 0]),
              loopIo: loopIo([5, 0]),
              slip: slip([7, 0])
            };
            return makePresetFromPartialTemplate(id, partial, offset)(deck)(controlComponentBuilder)(midiComponentBuilder)(modifier);
          };
        };
      };
    };
  };
});

var Juggler = (function (controlComponentBuilder) {
  return function (midiComponentBuilder) {
    return function (modifier) {
      return function (id) {
        return function (i) {
          return function (offset) {
            var deck = channelControls[i];

            var partial = {
              play: play([0, 0]),
              load: load([1, 0]),
              beatjump: beatjump([[0.5, 4], [1, 16], [2, 32], [4, 64]], true)([2, 0]),
              loopjump: loopjump([[1, 16], [4, 64]])([0, 1]),
              reloop: reloop([0, 3]),
              loopMultiply: loopMultiply([0, 4]),
              hotcue: hotcue(8, 2)([2, 4]),
              beatloop: beatloop([0.5, 1, 2, 4, 8, 16], 2)([0, 5])
            };
            return makePresetFromPartialTemplate(id, partial, offset)(deck)(controlComponentBuilder)(midiComponentBuilder)(modifier);
          };
        };
      };
    };
  };
});

var Sampler = (function (controlComponentBuilder) {
  return function (midiComponentBuilder) {
    return function (modifier) {
      return function (id) {
        return function (i) {
          return function (offset) {
            var deck = channelControls[i];

            var partial = {
              hotcue: hotcue(16, 4)([0, 0])
            };
            return makePresetFromPartialTemplate(id, partial, offset)(deck)(controlComponentBuilder)(midiComponentBuilder)(modifier);
          };
        };
      };
    };
  };
});

var Short = (function (controlComponentBuilder) {
  return function (midiComponentBuilder) {
    return function (modifier) {
      return function (id) {
        return function (i) {
          return function (offset) {
            var deck = channelControls[i];

            var partial = {
              play: play([0, 0]),
              sync: sync([1, 0]),
              nudge: nudge([2, 0]),
              cue: cue([0, 1]),
              tap: tap$2([1, 1]),
              grid: grid([2, 1]),
              pfl: pfl([0, 2]),
              quantize: quantize([1, 2]),
              loopIo: loopIo([2, 2]),
              load: load([0, 3]),
              key: key([1, 3]),
              reloop: reloop([2, 3]),
              slip: slip([3, 3])
            };
            return makePresetFromPartialTemplate(id, partial, offset)(deck)(controlComponentBuilder)(midiComponentBuilder)(modifier);
          };
        };
      };
    };
  };
});

var Tall = (function (controlComponentBuilder) {
  return function (midiComponentBuilder) {
    return function (modifier) {
      return function (id) {
        return function (i) {
          return function (offset) {
            var deck = channelControls[i];

            var partial = {
              play: play([0, 0]),
              sync: sync([1, 0]),
              nudge: nudge([2, 0]),
              cue: cue([0, 1]),
              tap: tap$2([1, 1]),
              grid: grid([2, 1]),
              pfl: pfl([0, 2]),
              quantize: quantize([1, 2]),
              loopIo: loopIo([2, 2]),
              load: load([0, 3]),
              key: key([1, 3]),
              reloop: reloop([2, 3]),
              slip: slip([3, 3]),
              hotcue: hotcue(4, 2)([0, 4]),
              loopMultiply: loopMultiply([2, 4]),
              beatloop: beatloop([0.5, 1, 2, 4, 8, 16], 2)([2, 5]),
              beatjump: beatjump([[1, 16], [2, 32]])([0, 6])
            };
            var preset = makePresetFromPartialTemplate(id, partial, offset)(deck)(controlComponentBuilder)(midiComponentBuilder)(modifier);
            return preset;
          };
        };
      };
    };
  };
});

var initialChannels = [0, 1];

var onMidi$1 = function onMidi(selectorBar, channel, modifier) {
  return retainAttackMode(modifier, function (mode, _ref) {
    var value$$1 = _ref.value;

    var selected = selectorBar.getChord();
    modes(mode, function () {
      if (!value$$1 && selected.length) {
        var diff = reorganize(selectorBar.getLayout(), selected);
        selectorBar.updateLayout(diff);
        selectorBar.removeChord();
      } else if (value$$1) {
        selectorBar.addToChord(channel);
      }
    }, function () {
      if (value$$1) {
        if (selected.length) selectorBar.removeChord();
        var diff = cycle(channel, selectorBar.getLayout(), 1);
        selectorBar.updateLayout(diff);
      }
    }, function () {
      if (value$$1) {
        if (selected.length) selectorBar.removeChord();
        var diff = cycle(channel, selectorBar.getLayout(), -1);
        selectorBar.updateLayout(diff);
      }
    });
  });
};

var SelectorBar = function (_Component) {
  inherits(SelectorBar, _Component);

  function SelectorBar(controlComponentBuilder, midiComponentBuilder, modifier, id) {
    classCallCheck(this, SelectorBar);

    var _this = possibleConstructorReturn(this, (SelectorBar.__proto__ || Object.getPrototypeOf(SelectorBar)).call(this));

    _this.id = id;
    _this.bindings = SelectorBar.buttons.map(function (v, i) {
      var binding = midiComponentBuilder(Buttons[v]);
      return [binding, onMidi$1(_this, i, modifier)];
    });
    _this.controlComponentBuilder = controlComponentBuilder;
    _this.midiComponentBuilder = midiComponentBuilder;
    _this.modifier = modifier;
    _this.chord = [];
    _this.layout = {};
    _this.mountedPresets = {};
    return _this;
  }

  createClass(SelectorBar, [{
    key: 'getLayout',
    value: function getLayout() {
      var res = [];
      for (var k in this.layout) {
        res.push(this.layout[k]);
      }
      return res;
    }
  }, {
    key: 'updateLayout',
    value: function updateLayout(diff) {
      var _this2 = this;

      var removedChannels = diff[0].map(function (block) {
        return block.channel;
      });
      removedChannels.forEach(function (ch) {
        delete _this2.layout[String(ch)];
        _this2.bindings[ch][0].button.sendColor(colors.black);
        _this2.mountedPresets[ch].unmount();
      });
      var addedBlocks = diff[1];
      addedBlocks.forEach(function (block) {
        _this2.layout[String(block.channel)] = block;
        if (block.index) {
          _this2.bindings[block.channel][0].button.sendColor(colors.hi_orange);
        } else {
          _this2.bindings[block.channel][0].button.sendColor(colors.hi_green);
        }
        _this2.mountedPresets[block.channel] = cycled[block.size][block.index](_this2.controlComponentBuilder)(_this2.midiComponentBuilder)(_this2.modifier)(_this2.id + '.deck.' + block.channel)(block.channel)(block.offset);
        _this2.mountedPresets[block.channel].mount();
      });
    }
  }, {
    key: 'removeChord',
    value: function removeChord() {
      var _this3 = this;

      var layout = this.getLayout();
      this.chord.forEach(function (ch) {
        var found = findIndex(layout, function (b) {
          return b.channel === ch;
        });
        if (found === -1) {
          _this3.bindings[ch][0].button.sendColor(colors.black);
        } else {
          var block = layout[found];
          if (block.index) {
            _this3.bindings[ch][0].button.sendColor(colors.hi_orange);
          } else {
            _this3.bindings[ch][0].button.sendColor(colors.hi_green);
          }
        }
        _this3.chord = [];
      });
    }
  }, {
    key: 'addToChord',
    value: function addToChord(channel) {
      if (this.chord.length === 4) {
        var rem = this.chord.shift();
        var found = findIndex(this.layout, function (b) {
          return b.channel === rem;
        });
        if (found === -1) {
          this.bindings[rem][0].button.sendColor(colors.black);
        } else {
          var layout = this.layout[found];
          if (layout.index) {
            this.bindings[rem][0].button.sendColor(colors.hi_orange);
          } else {
            this.bindings[rem][0].button.sendColor(colors.hi_green);
          }
        }
      }
      this.chord.push(channel);
      this.bindings[channel][0].button.sendColor(colors.hi_red);
    }
  }, {
    key: 'getChord',
    value: function getChord() {
      return this.chord;
    }
  }, {
    key: 'onMount',
    value: function onMount() {
      this.bindings.forEach(function (_ref2) {
        var _ref3 = slicedToArray(_ref2, 2),
            binding = _ref3[0],
            midi = _ref3[1];

        binding.mount();
        binding.on('midi', midi);
      });
    }
  }, {
    key: 'onUnmount',
    value: function onUnmount() {
      this.bindings.forEach(function (_ref4) {
        var _ref5 = slicedToArray(_ref4, 2),
            binding = _ref5[0],
            midi = _ref5[1];

        binding.removeListener('midi', midi);
        binding.unmount();
      });
    }
  }]);
  return SelectorBar;
}(Component);

SelectorBar.buttons = ['up', 'down', 'left', 'right', 'session', 'user1', 'user2', 'mixer'];
SelectorBar.channels = [0, 1, 2, 3, 4, 5, 6, 7];

var Layout = function (_Component2) {
  inherits(Layout, _Component2);

  function Layout(controlComponentBuilder, midiComponentBuilder, modifier, id) {
    classCallCheck(this, Layout);

    var _this4 = possibleConstructorReturn(this, (Layout.__proto__ || Object.getPrototypeOf(Layout)).call(this));

    _this4.selectorBar = new SelectorBar(controlComponentBuilder, midiComponentBuilder, modifier, id + '.selectorBar');
    return _this4;
  }

  createClass(Layout, [{
    key: 'onMount',
    value: function onMount() {
      this.selectorBar.mount();
      var diff = reorganize([], initialChannels);
      this.selectorBar.updateLayout(diff);
    }
  }, {
    key: 'onUnmount',
    value: function onUnmount() {
      var diff = reorganize(this.selectorBar.getLayout(), []);
      this.selectorBar.updateLayout(diff);
      this.selectorBar.unmount();
    }
  }]);
  return Layout;
}(Component);

var makeLayout = function makeLayout(controlComponentBuilder) {
  return function (midiComponentBuilder) {
    return function (modifier) {
      return function (id) {
        return new Layout(controlComponentBuilder, midiComponentBuilder, modifier, id + '.selectorBar');
      };
    };
  };
};

var offsets = [[0, 0], [4, 0], [0, 4], [4, 4]];

var presets = {
  grande: [Grande],
  tall: [Tall, Juggler],
  short: [Short, Sampler]
};

var cycled = {
  'grande': [].concat(toConsumableArray(presets.grande), toConsumableArray(presets.tall), toConsumableArray(presets.short)),
  'tall': [].concat(toConsumableArray(presets.tall), toConsumableArray(presets.short)),
  'short': presets.short
};

var reorganize = function reorganize(current, selectedChannels) {
  var next$$1 = selectedChannels.length <= 1 ? [{
    offset: offsets[0],
    size: 'grande',
    channel: selectedChannels[0],
    index: 0
  }] : selectedChannels.length <= 2 ? [{
    offset: offsets[0],
    size: 'tall',
    channel: selectedChannels[0],
    index: 0
  }, {
    offset: offsets[1],
    size: 'tall',
    channel: selectedChannels[1],
    index: 0
  }] : selectedChannels.length <= 3 ? [{
    offset: offsets[0],
    size: 'tall',
    channel: selectedChannels[0],
    index: 0
  }, {
    offset: offsets[1],
    size: 'short',
    channel: selectedChannels[1],
    index: 0
  }, {
    offset: offsets[3],
    size: 'short',
    channel: selectedChannels[2],
    index: 0
  }] : [{
    offset: offsets[0],
    size: 'short',
    channel: selectedChannels[0],
    index: 0
  }, {
    offset: offsets[1],
    size: 'short',
    channel: selectedChannels[1],
    index: 0
  }, {
    offset: offsets[2],
    size: 'short',
    channel: selectedChannels[2],
    index: 0
  }, {
    offset: offsets[3],
    size: 'short',
    channel: selectedChannels[3],
    index: 0
  }];
  return current.reduce(function (diff, block) {
    var _diff = slicedToArray(diff, 2),
        neg = _diff[0],
        pos = _diff[1];

    var matched = findIndex(pos, function (b) {
      return isEqual(block, b);
    });
    return matched === -1 ? [neg.concat([block]), pos] : [neg, pos.slice(0, matched).concat(pos.slice(matched + 1, pos.length))];
  }, [[], next$$1]);
};

var posMod = function posMod(x, n) {
  return (x % n + n) % n;
};

var cycle = function cycle(channel, current, dir) {
  var matched = findIndex(current, function (block) {
    return block.channel === channel;
  });
  if (matched === -1) {
    return [[], []];
  }
  var nextIndex = posMod(current[matched].index + dir, cycled[current[matched].size].length);
  if (nextIndex === current[matched].index) {
    return [[], []];
  }
  return [[current[matched]], [assign({}, current[matched], { index: nextIndex })]];
};

var Screen = function (_Component) {
  inherits(Screen, _Component);

  function Screen(timerBuilder, controlComponentBuilder, midiComponentBuilder, id) {
    classCallCheck(this, Screen);

    var _this = possibleConstructorReturn(this, (Screen.__proto__ || Object.getPrototypeOf(Screen)).call(this));

    _this.modifier = makeModifierSidebar(midiComponentBuilder);
    _this.playListSidebar = makePlaylistSidebar(timerBuilder)(midiComponentBuilder);
    _this.layout = makeLayout(controlComponentBuilder)(midiComponentBuilder)(_this.modifier)(id + '.layout');
    return _this;
  }

  createClass(Screen, [{
    key: 'onMount',
    value: function onMount() {
      this.modifier.mount();
      this.playListSidebar.mount();
      this.layout.mount();
    }
  }, {
    key: 'onUnmount',
    value: function onUnmount() {
      this.playListSidebar.unmount();
      this.modifier.unmount();
      this.layout.unmount();
    }
  }]);
  return Screen;
}(Component);

var makeScreen = function makeScreen(timerBuilder) {
  return function (controlComponentBuilder) {
    return function (midiComponentBuilder) {
      return function (id) {
        return new Screen(timerBuilder, controlComponentBuilder, midiComponentBuilder, id);
      };
    };
  };
};

var makeControlComponent = function makeControlComponent(controlBus) {
  return function (id) {
    return function (control) {
      return new ControlComponent(controlBus, id, control);
    };
  };
};

var ControlComponent = function (_Component) {
  inherits(ControlComponent, _Component);

  function ControlComponent(controlBus, id, control) {
    classCallCheck(this, ControlComponent);

    var _this = possibleConstructorReturn(this, (ControlComponent.__proto__ || Object.getPrototypeOf(ControlComponent)).call(this));

    _this.value = null;
    _this.id = id;
    _this.controlBus = controlBus;
    _this.control = control;
    _this._handle = null;
    return _this;
  }

  createClass(ControlComponent, [{
    key: 'onMount',
    value: function onMount() {
      var _this2 = this;

      if (!this._handle) {
        this._handle = this.controlBus.connect(this.id, this.control.def, function (data) {
          _this2.value = data.value;
          _this2.emit('update', data);
        });
        this.value = this.control.getValue();
        this.emit('update', this);
      }
    }
  }, {
    key: 'onUnmount',
    value: function onUnmount() {
      if (this._handle) {
        this.controlBus.disconnect(this._handle);
        this._handle = null;
      }
    }
  }, {
    key: 'setValue',
    value: function setValue(value) {
      this.control.setValue(value);
      this.value = this.control.getValue();
    }
  }, {
    key: 'toggleValue',
    value: function toggleValue() {
      this.setValue(Number(!this.getValue()));
    }
  }, {
    key: 'getValue',
    value: function getValue() {
      if (!this.handle) {
        this.value = this.control.getValue();
      }
      return this.value;
    }
  }]);
  return ControlComponent;
}(Component);

var makeMidiComponent = function makeMidiComponent(midibus) {
  return function (button) {
    return new MidiComponent(midibus, button);
  };
};

var MidiComponent = function (_Component) {
  inherits(MidiComponent, _Component);

  function MidiComponent(midibus, button) {
    classCallCheck(this, MidiComponent);

    var _this = possibleConstructorReturn(this, (MidiComponent.__proto__ || Object.getPrototypeOf(MidiComponent)).call(this));

    _this.midibus = midibus;
    _this.button = button;
    _this._cb = function (data) {
      if (data.value) {
        _this.emit('attack', data);
      } else {
        _this.emit('release', data);
      }
      _this.emit('midi', data);
    };
    return _this;
  }

  createClass(MidiComponent, [{
    key: 'onMount',
    value: function onMount() {
      this.midibus.on(this.button.def.name, this._cb);
    }
  }, {
    key: 'onUnmount',
    value: function onUnmount() {
      this.midibus.removeListener(this.button.def.name, this._cb);
    }
  }]);
  return MidiComponent;
}(Component);

var Global = function (_Component) {
  inherits(Global, _Component);

  function Global(globalName) {
    var globalObj = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
    classCallCheck(this, Global);

    var timerBuilder = makeTimer(globalName, globalObj);
    var controlComponentBuilder = makeControlComponent(ControlBus.create(globalName, globalObj));
    var midiComponentBuilder = makeMidiComponent(MidiBus.create(globalObj));

    var _this = possibleConstructorReturn(this, (Global.__proto__ || Object.getPrototypeOf(Global)).call(this));

    _this.screen = makeScreen(timerBuilder)(controlComponentBuilder)(midiComponentBuilder)('main');
    return _this;
  }

  createClass(Global, [{
    key: 'onMount',
    value: function onMount() {
      this.screen.mount();
    }
  }, {
    key: 'onUnmount',
    value: function onUnmount() {
      this.screen.unmount();
    }
  }]);
  return Global;
}(Component);

function create(globalName) {
  var globalObj = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};

  var globalComponent = new Global(globalName, globalObj);
  globalObj.init = function () {
    globalComponent.mount();
  };
  globalObj.shutdown = function () {
    globalComponent.unmount();
  };
  return globalObj;
}

var name = "@mixxx-launchpad/mk1";
var version = "1.0.0";
var main = "index.js";
var dependencies = { "@mixxx-launchpad/app": "1.0.0", "@mixxx-launchpad/mk-specs": "../mk-specs@1.0.0" };
var controller = { "device": "Launchpad", "manufacturer": "Novation", "global": "NovationLaunchpad" };
var pkg = {
	name: name,
	version: version,
	main: main,
	dependencies: dependencies,
	controller: controller,
	"private": true
};

var index = create(pkg.controller.global, {});

return index;

}());
