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					669 lines
				
				18 KiB
			| 
											2 years ago
										 | /** | ||
|  |  * lodash (Custom Build) <https://lodash.com/>
 | ||
|  |  * Build: `lodash modularize exports="npm" -o ./` | ||
|  |  * Copyright jQuery Foundation and other contributors <https://jquery.org/>
 | ||
|  |  * 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 references for various `Number` constants. */ | ||
|  | var MAX_SAFE_INTEGER = 9007199254740991; | ||
|  | 
 | ||
|  | /** `Object#toString` result references. */ | ||
|  | var argsTag = '[object Arguments]', | ||
|  |     funcTag = '[object Function]', | ||
|  |     genTag = '[object GeneratorFunction]'; | ||
|  | 
 | ||
|  | /** Used to detect unsigned integer values. */ | ||
|  | var reIsUint = /^(?:0|[1-9]\d*)$/; | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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); | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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; | ||
|  | } | ||
|  | 
 | ||
|  | /** 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 objectToString = objectProto.toString; | ||
|  | 
 | ||
|  | /** Built-in value references. */ | ||
|  | var propertyIsEnumerable = objectProto.propertyIsEnumerable; | ||
|  | 
 | ||
|  | /* Built-in method references for those with the same name as other `lodash` methods. */ | ||
|  | var nativeMax = Math.max; | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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) { | ||
|  |   // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
 | ||
|  |   // Safari 9 makes `arguments.length` enumerable in strict mode.
 | ||
|  |   var result = (isArray(value) || isArguments(value)) | ||
|  |     ? baseTimes(value.length, String) | ||
|  |     : []; | ||
|  | 
 | ||
|  |   var length = result.length, | ||
|  |       skipIndexes = !!length; | ||
|  | 
 | ||
|  |   for (var key in value) { | ||
|  |     if ((inherited || hasOwnProperty.call(value, key)) && | ||
|  |         !(skipIndexes && (key == 'length' || isIndex(key, length)))) { | ||
|  |       result.push(key); | ||
|  |     } | ||
|  |   } | ||
|  |   return result; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * Used by `_.defaults` to customize its `_.assignIn` use. | ||
|  |  * | ||
|  |  * @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 assignInDefaults(objValue, srcValue, key, object) { | ||
|  |   if (objValue === undefined || | ||
|  |       (eq(objValue, objectProto[key]) && !hasOwnProperty.call(object, key))) { | ||
|  |     return srcValue; | ||
|  |   } | ||
|  |   return objValue; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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.call(object, key) && eq(objValue, value)) || | ||
|  |       (value === undefined && !(key in object))) { | ||
|  |     object[key] = value; | ||
|  |   } | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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.call(object, key)))) { | ||
|  |       result.push(key); | ||
|  |     } | ||
|  |   } | ||
|  |   return result; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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) { | ||
|  |   start = nativeMax(start === undefined ? (func.length - 1) : start, 0); | ||
|  |   return function() { | ||
|  |     var args = arguments, | ||
|  |         index = -1, | ||
|  |         length = nativeMax(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] = array; | ||
|  |     return apply(func, this, otherArgs); | ||
|  |   }; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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) { | ||
|  |   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; | ||
|  | 
 | ||
|  |     assignValue(object, key, newValue === undefined ? source[key] : newValue); | ||
|  |   } | ||
|  |   return object; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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; | ||
|  |   }); | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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); | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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; | ||
|  |   if (type == 'number' | ||
|  |         ? (isArrayLike(object) && isIndex(index, object.length)) | ||
|  |         : (type == 'string' && index in object) | ||
|  |       ) { | ||
|  |     return eq(object[index], value); | ||
|  |   } | ||
|  |   return false; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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; | ||
|  | 
 | ||
|  |   return value === proto; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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); | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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
 | ||
|  |  */ | ||
|  | function isArguments(value) { | ||
|  |   // Safari 8.1 makes `arguments.callee` enumerable in strict mode.
 | ||
|  |   return isArrayLikeObject(value) && hasOwnProperty.call(value, 'callee') && | ||
|  |     (!propertyIsEnumerable.call(value, 'callee') || objectToString.call(value) == argsTag); | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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; | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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); | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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); | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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) { | ||
|  |   // The use of `Object#toString` avoids issues with the `typeof` operator
 | ||
|  |   // in Safari 8-9 which returns 'object' for typed array and other constructors.
 | ||
|  |   var tag = isObject(value) ? objectToString.call(value) : ''; | ||
|  |   return tag == funcTag || tag == genTag; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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; | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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; | ||
|  |   return !!value && (type == 'object' || type == 'function'); | ||
|  | } | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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 && typeof value == '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(source), object, customizer); | ||
|  | }); | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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 = baseRest(function(args) { | ||
|  |   args.push(undefined, assignInDefaults); | ||
|  |   return apply(assignInWith, undefined, args); | ||
|  | }); | ||
|  | 
 | ||
|  | /** | ||
|  |  * 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(object) { | ||
|  |   return isArrayLike(object) ? arrayLikeKeys(object, true) : baseKeysIn(object); | ||
|  | } | ||
|  | 
 | ||
|  | module.exports = defaults; |