diff options
Diffstat (limited to 'node_modules/lodash.isequal/index.js')
| -rw-r--r-- | node_modules/lodash.isequal/index.js | 497 |
1 files changed, 348 insertions, 149 deletions
diff --git a/node_modules/lodash.isequal/index.js b/node_modules/lodash.isequal/index.js index 9fc0281bf..c24908305 100644 --- a/node_modules/lodash.isequal/index.js +++ b/node_modules/lodash.isequal/index.js @@ -1,7 +1,7 @@ /** - * lodash (Custom Build) <https://lodash.com/> + * Lodash (Custom Build) <https://lodash.com/> * Build: `lodash modularize exports="npm" -o ./` - * Copyright jQuery Foundation and other contributors <https://jquery.org/> + * 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 @@ -13,9 +13,9 @@ var LARGE_ARRAY_SIZE = 200; /** Used to stand-in for `undefined` hash values. */ var HASH_UNDEFINED = '__lodash_hash_undefined__'; -/** Used to compose bitmasks for comparison styles. */ -var UNORDERED_COMPARE_FLAG = 1, - PARTIAL_COMPARE_FLAG = 2; +/** Used to compose bitmasks for value comparisons. */ +var COMPARE_PARTIAL_FLAG = 1, + COMPARE_UNORDERED_FLAG = 2; /** Used as references for various `Number` constants. */ var MAX_SAFE_INTEGER = 9007199254740991; @@ -23,6 +23,7 @@ var MAX_SAFE_INTEGER = 9007199254740991; /** `Object#toString` result references. */ var argsTag = '[object Arguments]', arrayTag = '[object Array]', + asyncTag = '[object AsyncFunction]', boolTag = '[object Boolean]', dateTag = '[object Date]', errorTag = '[object Error]', @@ -30,12 +31,15 @@ var argsTag = '[object Arguments]', genTag = '[object GeneratorFunction]', mapTag = '[object Map]', numberTag = '[object Number]', + nullTag = '[object Null]', objectTag = '[object Object]', promiseTag = '[object Promise]', + proxyTag = '[object Proxy]', regexpTag = '[object RegExp]', setTag = '[object Set]', stringTag = '[object String]', symbolTag = '[object Symbol]', + undefinedTag = '[object Undefined]', weakMapTag = '[object WeakMap]'; var arrayBufferTag = '[object ArrayBuffer]', @@ -102,7 +106,7 @@ var freeProcess = moduleExports && freeGlobal.process; /** Used to access faster Node.js helpers. */ var nodeUtil = (function() { try { - return freeProcess && freeProcess.binding('util'); + return freeProcess && freeProcess.binding && freeProcess.binding('util'); } catch (e) {} }()); @@ -110,6 +114,49 @@ var nodeUtil = (function() { var nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray; /** + * 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; +} + +/** + * 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; +} + +/** * A specialized version of `_.some` for arrays without support for iteratee * shorthands. * @@ -121,7 +168,7 @@ var nodeIsTypedArray = nodeUtil && nodeUtil.isTypedArray; */ function arraySome(array, predicate) { var index = -1, - length = array ? array.length : 0; + length = array == null ? 0 : array.length; while (++index < length) { if (predicate(array[index], index, array)) { @@ -164,34 +211,27 @@ function baseUnary(func) { } /** - * Gets the value at `key` of `object`. + * Checks if a `cache` value for `key` exists. * * @private - * @param {Object} [object] The object to query. - * @param {string} key The key of the property to get. - * @returns {*} Returns the property value. + * @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 getValue(object, key) { - return object == null ? undefined : object[key]; +function cacheHas(cache, key) { + return cache.has(key); } /** - * Checks if `value` is a host object in IE < 9. + * Gets the value at `key` of `object`. * * @private - * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is a host object, else `false`. + * @param {Object} [object] The object to query. + * @param {string} key The key of the property to get. + * @returns {*} Returns the property value. */ -function isHostObject(value) { - // Many host objects are `Object` objects that can coerce to strings - // despite having improperly defined `toString` methods. - var result = false; - if (value != null && typeof value.toString != 'function') { - try { - result = !!(value + ''); - } catch (e) {} - } - return result; +function getValue(object, key) { + return object == null ? undefined : object[key]; } /** @@ -250,24 +290,24 @@ var arrayProto = Array.prototype, /** 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 = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || ''); - return uid ? ('Symbol(src)_1.' + uid) : ''; -}()); - /** Used to resolve the decompiled source of functions. */ var funcToString = funcProto.toString; /** Used to check objects for own properties. */ var hasOwnProperty = objectProto.hasOwnProperty; +/** Used to detect methods masquerading as native. */ +var maskSrcKey = (function() { + var uid = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || ''); + return uid ? ('Symbol(src)_1.' + uid) : ''; +}()); + /** * Used to resolve the * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring) * of values. */ -var objectToString = objectProto.toString; +var nativeObjectToString = objectProto.toString; /** Used to detect if a method is native. */ var reIsNative = RegExp('^' + @@ -276,13 +316,17 @@ var reIsNative = RegExp('^' + ); /** Built-in value references. */ -var Symbol = root.Symbol, +var Buffer = moduleExports ? root.Buffer : undefined, + Symbol = root.Symbol, Uint8Array = root.Uint8Array, propertyIsEnumerable = objectProto.propertyIsEnumerable, - splice = arrayProto.splice; + splice = arrayProto.splice, + symToStringTag = Symbol ? Symbol.toStringTag : undefined; /* Built-in method references for those with the same name as other `lodash` methods. */ -var nativeKeys = overArg(Object.keys, Object); +var nativeGetSymbols = Object.getOwnPropertySymbols, + nativeIsBuffer = Buffer ? Buffer.isBuffer : undefined, + nativeKeys = overArg(Object.keys, Object); /* Built-in method references that are verified to be native. */ var DataView = getNative(root, 'DataView'), @@ -312,7 +356,7 @@ var symbolProto = Symbol ? Symbol.prototype : undefined, */ function Hash(entries) { var index = -1, - length = entries ? entries.length : 0; + length = entries == null ? 0 : entries.length; this.clear(); while (++index < length) { @@ -330,6 +374,7 @@ function Hash(entries) { */ function hashClear() { this.__data__ = nativeCreate ? nativeCreate(null) : {}; + this.size = 0; } /** @@ -343,7 +388,9 @@ function hashClear() { * @returns {boolean} Returns `true` if the entry was removed, else `false`. */ function hashDelete(key) { - return this.has(key) && delete this.__data__[key]; + var result = this.has(key) && delete this.__data__[key]; + this.size -= result ? 1 : 0; + return result; } /** @@ -375,7 +422,7 @@ function hashGet(key) { */ function hashHas(key) { var data = this.__data__; - return nativeCreate ? data[key] !== undefined : hasOwnProperty.call(data, key); + return nativeCreate ? (data[key] !== undefined) : hasOwnProperty.call(data, key); } /** @@ -390,6 +437,7 @@ function hashHas(key) { */ function hashSet(key, value) { var data = this.__data__; + this.size += this.has(key) ? 0 : 1; data[key] = (nativeCreate && value === undefined) ? HASH_UNDEFINED : value; return this; } @@ -410,7 +458,7 @@ Hash.prototype.set = hashSet; */ function ListCache(entries) { var index = -1, - length = entries ? entries.length : 0; + length = entries == null ? 0 : entries.length; this.clear(); while (++index < length) { @@ -428,6 +476,7 @@ function ListCache(entries) { */ function listCacheClear() { this.__data__ = []; + this.size = 0; } /** @@ -452,6 +501,7 @@ function listCacheDelete(key) { } else { splice.call(data, index, 1); } + --this.size; return true; } @@ -499,6 +549,7 @@ function listCacheSet(key, value) { index = assocIndexOf(data, key); if (index < 0) { + ++this.size; data.push([key, value]); } else { data[index][1] = value; @@ -522,7 +573,7 @@ ListCache.prototype.set = listCacheSet; */ function MapCache(entries) { var index = -1, - length = entries ? entries.length : 0; + length = entries == null ? 0 : entries.length; this.clear(); while (++index < length) { @@ -539,6 +590,7 @@ function MapCache(entries) { * @memberOf MapCache */ function mapCacheClear() { + this.size = 0; this.__data__ = { 'hash': new Hash, 'map': new (Map || ListCache), @@ -556,7 +608,9 @@ function mapCacheClear() { * @returns {boolean} Returns `true` if the entry was removed, else `false`. */ function mapCacheDelete(key) { - return getMapData(this, key)['delete'](key); + var result = getMapData(this, key)['delete'](key); + this.size -= result ? 1 : 0; + return result; } /** @@ -596,7 +650,11 @@ function mapCacheHas(key) { * @returns {Object} Returns the map cache instance. */ function mapCacheSet(key, value) { - getMapData(this, key).set(key, value); + var data = getMapData(this, key), + size = data.size; + + data.set(key, value); + this.size += data.size == size ? 0 : 1; return this; } @@ -617,7 +675,7 @@ MapCache.prototype.set = mapCacheSet; */ function SetCache(values) { var index = -1, - length = values ? values.length : 0; + length = values == null ? 0 : values.length; this.__data__ = new MapCache; while (++index < length) { @@ -665,7 +723,8 @@ SetCache.prototype.has = setCacheHas; * @param {Array} [entries] The key-value pairs to cache. */ function Stack(entries) { - this.__data__ = new ListCache(entries); + var data = this.__data__ = new ListCache(entries); + this.size = data.size; } /** @@ -677,6 +736,7 @@ function Stack(entries) { */ function stackClear() { this.__data__ = new ListCache; + this.size = 0; } /** @@ -689,7 +749,11 @@ function stackClear() { * @returns {boolean} Returns `true` if the entry was removed, else `false`. */ function stackDelete(key) { - return this.__data__['delete'](key); + var data = this.__data__, + result = data['delete'](key); + + this.size = data.size; + return result; } /** @@ -729,16 +793,18 @@ function stackHas(key) { * @returns {Object} Returns the stack cache instance. */ function stackSet(key, value) { - var cache = this.__data__; - if (cache instanceof ListCache) { - var pairs = cache.__data__; + 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; } - cache = this.__data__ = new MapCache(pairs); + data = this.__data__ = new MapCache(pairs); } - cache.set(key, value); + data.set(key, value); + this.size = data.size; return this; } @@ -758,18 +824,26 @@ Stack.prototype.set = stackSet; * @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; + 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.call(value, key)) && - !(skipIndexes && (key == 'length' || isIndex(key, length)))) { + !(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); } } @@ -795,14 +869,46 @@ function assocIndexOf(array, key) { } /** - * The base implementation of `getTag`. + * 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)); +} + +/** + * 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) { - return objectToString.call(value); + if (value == null) { + return value === undefined ? undefinedTag : nullTag; + } + return (symToStringTag && symToStringTag in Object(value)) + ? getRawTag(value) + : objectToString(value); +} + +/** + * 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; } /** @@ -812,22 +918,21 @@ function baseGetTag(value) { * @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 {boolean} [bitmask] The bitmask of comparison flags. - * The bitmask may be composed of the following flags: - * 1 - Unordered comparison - * 2 - Partial comparison * @param {Object} [stack] Tracks traversed `value` and `other` objects. * @returns {boolean} Returns `true` if the values are equivalent, else `false`. */ -function baseIsEqual(value, other, customizer, bitmask, stack) { +function baseIsEqual(value, other, bitmask, customizer, stack) { if (value === other) { return true; } - if (value == null || other == null || (!isObject(value) && !isObjectLike(other))) { + if (value == null || other == null || (!isObjectLike(value) && !isObjectLike(other))) { return value !== value && other !== other; } - return baseIsEqualDeep(value, other, baseIsEqual, customizer, bitmask, stack); + return baseIsEqualDeep(value, other, bitmask, customizer, baseIsEqual, stack); } /** @@ -838,38 +943,39 @@ function baseIsEqual(value, other, customizer, bitmask, stack) { * @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 {Function} [customizer] The function to customize comparisons. - * @param {number} [bitmask] The bitmask of comparison flags. See `baseIsEqual` - * for more details. * @param {Object} [stack] Tracks traversed `object` and `other` objects. * @returns {boolean} Returns `true` if the objects are equivalent, else `false`. */ -function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) { +function baseIsEqualDeep(object, other, bitmask, customizer, equalFunc, stack) { var objIsArr = isArray(object), othIsArr = isArray(other), - objTag = arrayTag, - othTag = arrayTag; + objTag = objIsArr ? arrayTag : getTag(object), + othTag = othIsArr ? arrayTag : getTag(other); - if (!objIsArr) { - objTag = getTag(object); - objTag = objTag == argsTag ? objectTag : objTag; - } - if (!othIsArr) { - othTag = getTag(other); - othTag = othTag == argsTag ? objectTag : othTag; - } - var objIsObj = objTag == objectTag && !isHostObject(object), - othIsObj = othTag == objectTag && !isHostObject(other), + objTag = objTag == argsTag ? objectTag : objTag; + othTag = othTag == argsTag ? objectTag : othTag; + + var objIsObj = objTag == objectTag, + othIsObj = othTag == objectTag, 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, equalFunc, customizer, bitmask, stack) - : equalByTag(object, other, objTag, equalFunc, customizer, bitmask, stack); + ? equalArrays(object, other, bitmask, customizer, equalFunc, stack) + : equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack); } - if (!(bitmask & PARTIAL_COMPARE_FLAG)) { + if (!(bitmask & COMPARE_PARTIAL_FLAG)) { var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'), othIsWrapped = othIsObj && hasOwnProperty.call(other, '__wrapped__'); @@ -878,14 +984,14 @@ function baseIsEqualDeep(object, other, equalFunc, customizer, bitmask, stack) { othUnwrapped = othIsWrapped ? other.value() : other; stack || (stack = new Stack); - return equalFunc(objUnwrapped, othUnwrapped, customizer, bitmask, stack); + return equalFunc(objUnwrapped, othUnwrapped, bitmask, customizer, stack); } } if (!isSameTag) { return false; } stack || (stack = new Stack); - return equalObjects(object, other, equalFunc, customizer, bitmask, stack); + return equalObjects(object, other, bitmask, customizer, equalFunc, stack); } /** @@ -900,7 +1006,7 @@ function baseIsNative(value) { if (!isObject(value) || isMasked(value)) { return false; } - var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor; + var pattern = isFunction(value) ? reIsNative : reIsHostCtor; return pattern.test(toSource(value)); } @@ -913,7 +1019,7 @@ function baseIsNative(value) { */ function baseIsTypedArray(value) { return isObjectLike(value) && - isLength(value.length) && !!typedArrayTags[objectToString.call(value)]; + isLength(value.length) && !!typedArrayTags[baseGetTag(value)]; } /** @@ -943,15 +1049,14 @@ function baseKeys(object) { * @private * @param {Array} array The array to compare. * @param {Array} other The other array to compare. - * @param {Function} equalFunc The function to determine equivalents of values. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. * @param {Function} customizer The function to customize comparisons. - * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual` - * for more details. + * @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, equalFunc, customizer, bitmask, stack) { - var isPartial = bitmask & PARTIAL_COMPARE_FLAG, +function equalArrays(array, other, bitmask, customizer, equalFunc, stack) { + var isPartial = bitmask & COMPARE_PARTIAL_FLAG, arrLength = array.length, othLength = other.length; @@ -965,7 +1070,7 @@ function equalArrays(array, other, equalFunc, customizer, bitmask, stack) { } var index = -1, result = true, - seen = (bitmask & UNORDERED_COMPARE_FLAG) ? new SetCache : undefined; + seen = (bitmask & COMPARE_UNORDERED_FLAG) ? new SetCache : undefined; stack.set(array, other); stack.set(other, array); @@ -990,9 +1095,9 @@ function equalArrays(array, other, equalFunc, customizer, bitmask, stack) { // Recursively compare arrays (susceptible to call stack limits). if (seen) { if (!arraySome(other, function(othValue, othIndex) { - if (!seen.has(othIndex) && - (arrValue === othValue || equalFunc(arrValue, othValue, customizer, bitmask, stack))) { - return seen.add(othIndex); + if (!cacheHas(seen, othIndex) && + (arrValue === othValue || equalFunc(arrValue, othValue, bitmask, customizer, stack))) { + return seen.push(othIndex); } })) { result = false; @@ -1000,7 +1105,7 @@ function equalArrays(array, other, equalFunc, customizer, bitmask, stack) { } } else if (!( arrValue === othValue || - equalFunc(arrValue, othValue, customizer, bitmask, stack) + equalFunc(arrValue, othValue, bitmask, customizer, stack) )) { result = false; break; @@ -1022,14 +1127,13 @@ function equalArrays(array, other, equalFunc, customizer, bitmask, stack) { * @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 {Function} equalFunc The function to determine equivalents of values. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. * @param {Function} customizer The function to customize comparisons. - * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual` - * for more details. + * @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, equalFunc, customizer, bitmask, stack) { +function equalByTag(object, other, tag, bitmask, customizer, equalFunc, stack) { switch (tag) { case dataViewTag: if ((object.byteLength != other.byteLength) || @@ -1067,7 +1171,7 @@ function equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) { var convert = mapToArray; case setTag: - var isPartial = bitmask & PARTIAL_COMPARE_FLAG; + var isPartial = bitmask & COMPARE_PARTIAL_FLAG; convert || (convert = setToArray); if (object.size != other.size && !isPartial) { @@ -1078,11 +1182,11 @@ function equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) { if (stacked) { return stacked == other; } - bitmask |= UNORDERED_COMPARE_FLAG; + bitmask |= COMPARE_UNORDERED_FLAG; // Recursively compare objects (susceptible to call stack limits). stack.set(object, other); - var result = equalArrays(convert(object), convert(other), equalFunc, customizer, bitmask, stack); + var result = equalArrays(convert(object), convert(other), bitmask, customizer, equalFunc, stack); stack['delete'](object); return result; @@ -1101,18 +1205,17 @@ function equalByTag(object, other, tag, equalFunc, customizer, bitmask, stack) { * @private * @param {Object} object The object to compare. * @param {Object} other The other object to compare. - * @param {Function} equalFunc The function to determine equivalents of values. + * @param {number} bitmask The bitmask flags. See `baseIsEqual` for more details. * @param {Function} customizer The function to customize comparisons. - * @param {number} bitmask The bitmask of comparison flags. See `baseIsEqual` - * for more details. + * @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, equalFunc, customizer, bitmask, stack) { - var isPartial = bitmask & PARTIAL_COMPARE_FLAG, - objProps = keys(object), +function equalObjects(object, other, bitmask, customizer, equalFunc, stack) { + var isPartial = bitmask & COMPARE_PARTIAL_FLAG, + objProps = getAllKeys(object), objLength = objProps.length, - othProps = keys(other), + othProps = getAllKeys(other), othLength = othProps.length; if (objLength != othLength && !isPartial) { @@ -1147,7 +1250,7 @@ function equalObjects(object, other, equalFunc, customizer, bitmask, stack) { } // Recursively compare objects (susceptible to call stack limits). if (!(compared === undefined - ? (objValue === othValue || equalFunc(objValue, othValue, customizer, bitmask, stack)) + ? (objValue === othValue || equalFunc(objValue, othValue, bitmask, customizer, stack)) : compared )) { result = false; @@ -1173,6 +1276,17 @@ function equalObjects(object, other, equalFunc, customizer, bitmask, stack) { } /** + * 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); +} + +/** * Gets the data for `map`. * * @private @@ -1201,6 +1315,50 @@ function getNative(object, key) { } /** + * 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), + tag = value[symToStringTag]; + + try { + value[symToStringTag] = undefined; + var unmasked = true; + } catch (e) {} + + var result = nativeObjectToString.call(value); + if (unmasked) { + if (isOwn) { + value[symToStringTag] = tag; + } else { + delete value[symToStringTag]; + } + } + return result; +} + +/** + * 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.call(object, symbol); + }); +}; + +/** * Gets the `toStringTag` of `value`. * * @private @@ -1209,17 +1367,16 @@ function getNative(object, key) { */ var getTag = baseGetTag; -// Fallback for data views, maps, sets, and weak maps in IE 11, -// for data views in Edge < 14, and promises in Node.js. +// 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) || (Map && getTag(new Map) != mapTag) || (Promise && getTag(Promise.resolve()) != promiseTag) || (Set && getTag(new Set) != setTag) || (WeakMap && getTag(new WeakMap) != weakMapTag)) { getTag = function(value) { - var result = objectToString.call(value), + var result = baseGetTag(value), Ctor = result == objectTag ? value.constructor : undefined, - ctorString = Ctor ? toSource(Ctor) : undefined; + ctorString = Ctor ? toSource(Ctor) : ''; if (ctorString) { switch (ctorString) { @@ -1289,10 +1446,21 @@ function isPrototype(value) { } /** + * 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.call(value); +} + +/** * Converts `func` to its source code. * * @private - * @param {Function} func The function to process. + * @param {Function} func The function to convert. * @returns {string} Returns the source code. */ function toSource(func) { @@ -1361,11 +1529,10 @@ function eq(value, other) { * _.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); -} +var isArguments = baseIsArguments(function() { return arguments; }()) ? baseIsArguments : function(value) { + return isObjectLike(value) && hasOwnProperty.call(value, 'callee') && + !propertyIsEnumerable.call(value, 'callee'); +}; /** * Checks if `value` is classified as an `Array` object. @@ -1422,33 +1589,23 @@ function isArrayLike(value) { } /** - * This method is like `_.isArrayLike` except that it also checks if `value` - * is an object. + * Checks if `value` is a buffer. * * @static * @memberOf _ - * @since 4.0.0 + * @since 4.3.0 * @category Lang * @param {*} value The value to check. - * @returns {boolean} Returns `true` if `value` is an array-like object, - * else `false`. + * @returns {boolean} Returns `true` if `value` is a buffer, else `false`. * @example * - * _.isArrayLikeObject([1, 2, 3]); - * // => true - * - * _.isArrayLikeObject(document.body.children); + * _.isBuffer(new Buffer(2)); * // => true * - * _.isArrayLikeObject('abc'); - * // => false - * - * _.isArrayLikeObject(_.noop); + * _.isBuffer(new Uint8Array(2)); * // => false */ -function isArrayLikeObject(value) { - return isObjectLike(value) && isArrayLike(value); -} +var isBuffer = nativeIsBuffer || stubFalse; /** * Performs a deep comparison between two values to determine if they are @@ -1458,7 +1615,7 @@ function isArrayLikeObject(value) { * 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 **not** supported. + * nodes are compared by strict equality, i.e. `===`. * * @static * @memberOf _ @@ -1500,10 +1657,13 @@ function isEqual(value, other) { * // => false */ function isFunction(value) { + if (!isObject(value)) { + return false; + } // 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; + // 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; } /** @@ -1564,7 +1724,7 @@ function isLength(value) { */ function isObject(value) { var type = typeof value; - return !!value && (type == 'object' || type == 'function'); + return value != null && (type == 'object' || type == 'function'); } /** @@ -1592,7 +1752,7 @@ function isObject(value) { * // => false */ function isObjectLike(value) { - return !!value && typeof value == 'object'; + return value != null && typeof value == 'object'; } /** @@ -1646,4 +1806,43 @@ function keys(object) { return isArrayLike(object) ? arrayLikeKeys(object) : baseKeys(object); } +/** + * 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 []; +} + +/** + * 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; +} + module.exports = isEqual; |