1848 lines
48 KiB
JavaScript
1848 lines
48 KiB
JavaScript
/**
|
|
* Lodash (Custom Build) <https://lodash.com/>
|
|
* Build: `lodash modularize exports="npm" -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 size to enable large array optimizations. */
|
|
var LARGE_ARRAY_SIZE = 200;
|
|
|
|
/** Used to stand-in for `undefined` hash values. */
|
|
var HASH_UNDEFINED = '__lodash_hash_undefined__';
|
|
|
|
/** 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;
|
|
|
|
/** `Object#toString` result references. */
|
|
var argsTag = '[object Arguments]',
|
|
arrayTag = '[object Array]',
|
|
asyncTag = '[object AsyncFunction]',
|
|
boolTag = '[object Boolean]',
|
|
dateTag = '[object Date]',
|
|
errorTag = '[object Error]',
|
|
funcTag = '[object Function]',
|
|
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]',
|
|
dataViewTag = '[object DataView]',
|
|
float32Tag = '[object Float32Array]',
|
|
float64Tag = '[object Float64Array]',
|
|
int8Tag = '[object Int8Array]',
|
|
int16Tag = '[object Int16Array]',
|
|
int32Tag = '[object Int32Array]',
|
|
uint8Tag = '[object Uint8Array]',
|
|
uint8ClampedTag = '[object Uint8ClampedArray]',
|
|
uint16Tag = '[object Uint16Array]',
|
|
uint32Tag = '[object Uint32Array]';
|
|
|
|
/**
|
|
* 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 = /^\[object .+?Constructor\]$/;
|
|
|
|
/** Used to detect unsigned integer values. */
|
|
var reIsUint = /^(?:0|[1-9]\d*)$/;
|
|
|
|
/** 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] = typedArrayTags[arrayTag] =
|
|
typedArrayTags[arrayBufferTag] = typedArrayTags[boolTag] =
|
|
typedArrayTags[dataViewTag] = typedArrayTags[dateTag] =
|
|
typedArrayTags[errorTag] = typedArrayTags[funcTag] =
|
|
typedArrayTags[mapTag] = typedArrayTags[numberTag] =
|
|
typedArrayTags[objectTag] = typedArrayTags[regexpTag] =
|
|
typedArrayTags[setTag] = typedArrayTags[stringTag] =
|
|
typedArrayTags[weakMapTag] = false;
|
|
|
|
/** Detect free variable `global` from Node.js. */
|
|
var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
|
|
|
|
/** Detect free variable `self`. */
|
|
var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
|
|
|
|
/** Used as a reference to the global object. */
|
|
var root = freeGlobal || freeSelf || Function('return this')();
|
|
|
|
/** Detect free variable `exports`. */
|
|
var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports;
|
|
|
|
/** Detect free variable `module`. */
|
|
var freeModule = freeExports && typeof module == 'object' && module && !module.nodeType && module;
|
|
|
|
/** Detect the popular CommonJS extension `module.exports`. */
|
|
var moduleExports = freeModule && freeModule.exports === freeExports;
|
|
|
|
/** Detect free variable `process` from Node.js. */
|
|
var freeProcess = moduleExports && 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;
|
|
|
|
/**
|
|
* 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.
|
|
*
|
|
* @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;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
};
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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];
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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));
|
|
};
|
|
}
|
|
|
|
/**
|
|
* 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 for built-in method references. */
|
|
var arrayProto = Array.prototype,
|
|
funcProto = Function.prototype,
|
|
objectProto = Object.prototype;
|
|
|
|
/** Used to detect overreaching core-js shims. */
|
|
var coreJsData = root['__core-js_shared__'];
|
|
|
|
/** 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 = /[^.]+$/.exec(coreJsData && coreJsData.keys && coreJsData.keys.IE_PROTO || '');
|
|
return uid ? ('Symbol(src)_1.' + uid) : '';
|
|
}());
|
|
|
|
/**
|
|
* Used to resolve the
|
|
* [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
|
|
* of values.
|
|
*/
|
|
var nativeObjectToString = objectProto.toString;
|
|
|
|
/** Used to detect if a method is native. */
|
|
var reIsNative = RegExp('^' +
|
|
funcToString.call(hasOwnProperty).replace(reRegExpChar, '\\$&')
|
|
.replace(/hasOwnProperty|(function).*?(?=\\\()| for .+?(?=\\\])/g, '$1.*?') + '$'
|
|
);
|
|
|
|
/** Built-in value references. */
|
|
var Buffer = moduleExports ? root.Buffer : undefined,
|
|
Symbol = root.Symbol,
|
|
Uint8Array = root.Uint8Array,
|
|
propertyIsEnumerable = objectProto.propertyIsEnumerable,
|
|
splice = arrayProto.splice,
|
|
symToStringTag = Symbol ? Symbol.toStringTag : undefined;
|
|
|
|
/* Built-in method references for those with the same name as other `lodash` methods. */
|
|
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'),
|
|
Map = getNative(root, 'Map'),
|
|
Promise = getNative(root, 'Promise'),
|
|
Set = getNative(root, 'Set'),
|
|
WeakMap = getNative(root, 'WeakMap'),
|
|
nativeCreate = getNative(Object, 'create');
|
|
|
|
/** Used to detect maps, sets, and weakmaps. */
|
|
var dataViewCtorString = toSource(DataView),
|
|
mapCtorString = toSource(Map),
|
|
promiseCtorString = toSource(Promise),
|
|
setCtorString = toSource(Set),
|
|
weakMapCtorString = toSource(WeakMap);
|
|
|
|
/** Used to convert symbols to primitives and strings. */
|
|
var symbolProto = Symbol ? Symbol.prototype : undefined,
|
|
symbolValueOf = symbolProto ? symbolProto.valueOf : undefined;
|
|
|
|
/**
|
|
* 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]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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.call(data, key) ? data[key] : undefined;
|
|
}
|
|
|
|
/**
|
|
* 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.call(data, key);
|
|
}
|
|
|
|
/**
|
|
* 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 : value;
|
|
return this;
|
|
}
|
|
|
|
// Add methods to `Hash`.
|
|
Hash.prototype.clear = hashClear;
|
|
Hash.prototype['delete'] = hashDelete;
|
|
Hash.prototype.get = hashGet;
|
|
Hash.prototype.has = hashHas;
|
|
Hash.prototype.set = hashSet;
|
|
|
|
/**
|
|
* 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]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Removes all key-value entries from the list cache.
|
|
*
|
|
* @private
|
|
* @name clear
|
|
* @memberOf ListCache
|
|
*/
|
|
function listCacheClear() {
|
|
this.__data__ = [];
|
|
this.size = 0;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
// Add methods to `ListCache`.
|
|
ListCache.prototype.clear = listCacheClear;
|
|
ListCache.prototype['delete'] = listCacheDelete;
|
|
ListCache.prototype.get = listCacheGet;
|
|
ListCache.prototype.has = listCacheHas;
|
|
ListCache.prototype.set = listCacheSet;
|
|
|
|
/**
|
|
* 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]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
};
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
// Add methods to `MapCache`.
|
|
MapCache.prototype.clear = mapCacheClear;
|
|
MapCache.prototype['delete'] = mapCacheDelete;
|
|
MapCache.prototype.get = mapCacheGet;
|
|
MapCache.prototype.has = mapCacheHas;
|
|
MapCache.prototype.set = mapCacheSet;
|
|
|
|
/**
|
|
*
|
|
* 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]);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
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);
|
|
}
|
|
|
|
// Add methods to `SetCache`.
|
|
SetCache.prototype.add = SetCache.prototype.push = setCacheAdd;
|
|
SetCache.prototype.has = setCacheHas;
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
// Add methods to `Stack`.
|
|
Stack.prototype.clear = stackClear;
|
|
Stack.prototype['delete'] = stackDelete;
|
|
Stack.prototype.get = stackGet;
|
|
Stack.prototype.has = stackHas;
|
|
Stack.prototype.set = stackSet;
|
|
|
|
/**
|
|
* 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.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;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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) {
|
|
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;
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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 : getTag(object),
|
|
othTag = othIsArr ? arrayTag : getTag(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, bitmask, customizer, equalFunc, stack)
|
|
: equalByTag(object, other, objTag, bitmask, customizer, equalFunc, stack);
|
|
}
|
|
if (!(bitmask & COMPARE_PARTIAL_FLAG)) {
|
|
var objIsWrapped = objIsObj && hasOwnProperty.call(object, '__wrapped__'),
|
|
othIsWrapped = othIsObj && hasOwnProperty.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 `_.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));
|
|
}
|
|
|
|
/**
|
|
* 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 `_.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.call(object, key) && key != 'constructor') {
|
|
result.push(key);
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
/**
|
|
* 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,
|
|
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) ? 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;
|
|
}
|
|
|
|
/**
|
|
* 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:
|
|
if ((object.byteLength != other.byteLength) ||
|
|
(object.byteOffset != other.byteOffset)) {
|
|
return false;
|
|
}
|
|
object = object.buffer;
|
|
other = other.buffer;
|
|
|
|
case arrayBufferTag:
|
|
if ((object.byteLength != other.byteLength) ||
|
|
!equalFunc(new Uint8Array(object), new Uint8Array(other))) {
|
|
return false;
|
|
}
|
|
return true;
|
|
|
|
case boolTag:
|
|
case dateTag:
|
|
case numberTag:
|
|
// Coerce booleans to `1` or `0` and dates to milliseconds.
|
|
// Invalid dates are coerced to `NaN`.
|
|
return eq(+object, +other);
|
|
|
|
case errorTag:
|
|
return object.name == other.name && object.message == other.message;
|
|
|
|
case regexpTag:
|
|
case stringTag:
|
|
// 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:
|
|
var convert = mapToArray;
|
|
|
|
case setTag:
|
|
var isPartial = bitmask & COMPARE_PARTIAL_FLAG;
|
|
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;
|
|
|
|
// 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:
|
|
if (symbolValueOf) {
|
|
return symbolValueOf.call(object) == symbolValueOf.call(other);
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* 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,
|
|
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.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;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* @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;
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
* @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) ||
|
|
(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 = baseGetTag(value),
|
|
Ctor = result == objectTag ? value.constructor : undefined,
|
|
ctorString = Ctor ? toSource(Ctor) : '';
|
|
|
|
if (ctorString) {
|
|
switch (ctorString) {
|
|
case dataViewCtorString: return dataViewTag;
|
|
case mapCtorString: return mapTag;
|
|
case promiseCtorString: return promiseTag;
|
|
case setCtorString: return setTag;
|
|
case weakMapCtorString: return weakMapTag;
|
|
}
|
|
}
|
|
return result;
|
|
};
|
|
}
|
|
|
|
/**
|
|
* 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 `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;
|
|
return (type == 'string' || type == 'number' || type == 'symbol' || type == 'boolean')
|
|
? (value !== '__proto__')
|
|
: (value === null);
|
|
}
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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 convert.
|
|
* @returns {string} Returns the source code.
|
|
*/
|
|
function toSource(func) {
|
|
if (func != null) {
|
|
try {
|
|
return funcToString.call(func);
|
|
} catch (e) {}
|
|
try {
|
|
return (func + '');
|
|
} catch (e) {}
|
|
}
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* 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
|
|
*/
|
|
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.
|
|
*
|
|
* @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);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
}
|
|
|
|
/**
|
|
* 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 != null && (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 != null && typeof value == 'object';
|
|
}
|
|
|
|
/**
|
|
* 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;
|
|
|
|
/**
|
|
* 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);
|
|
}
|
|
|
|
/**
|
|
* 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;
|