AlkantarClanX12
Current Path : /lib/node_modules/npm/node_modules/lodash._createset/ |
Current File : //lib/node_modules/npm/node_modules/lodash._createset/index.js |
/** * 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 INFINITY = 1 / 0; /** `Object#toString` result references. */ var funcTag = '[object Function]', genTag = '[object GeneratorFunction]'; /** * Used to match `RegExp` * [syntax characters](http://ecma-international.org/ecma-262/6.0/#sec-patterns). */ var reRegExpChar = /[\\^$.*+?()[\]{}|]/g; /** Used to detect host constructors (Safari). */ var reIsHostCtor = /^\[object .+?Constructor\]$/; /** Used to determine if values are of the language type `Object`. */ var objectTypes = { 'function': true, 'object': true }; /** Detect free variable `exports`. */ var freeExports = (objectTypes[typeof exports] && exports && !exports.nodeType) ? exports : undefined; /** Detect free variable `module`. */ var freeModule = (objectTypes[typeof module] && module && !module.nodeType) ? module : undefined; /** Detect free variable `global` from Node.js. */ var freeGlobal = checkGlobal(freeExports && freeModule && typeof global == 'object' && global); /** Detect free variable `self`. */ var freeSelf = checkGlobal(objectTypes[typeof self] && self); /** Detect free variable `window`. */ var freeWindow = checkGlobal(objectTypes[typeof window] && window); /** Detect `this` as the global object. */ var thisGlobal = checkGlobal(objectTypes[typeof this] && this); /** * Used as a reference to the global object. * * The `this` value is used if it's the global object to avoid Greasemonkey's * restricted `window` object, otherwise the `window` object is used. */ var root = freeGlobal || ((freeWindow !== (thisGlobal && thisGlobal.window)) && freeWindow) || freeSelf || thisGlobal || Function('return this')(); /** * Checks if `value` is a global object. * * @private * @param {*} value The value to check. * @returns {null|Object} Returns `value` if it's a global object, else `null`. */ function checkGlobal(value) { return (value && value.Object === Object) ? value : null; } /** * Checks if `value` is a host object in IE < 9. * * @private * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is a host object, else `false`. */ 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; } /** * 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 objectProto = Object.prototype; /** Used to resolve the decompiled source of functions. */ var funcToString = Function.prototype.toString; /** Used to check objects for own properties. */ var hasOwnProperty = objectProto.hasOwnProperty; /** * Used to resolve the * [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) * of values. */ var objectToString = 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 method references that are verified to be native. */ var Set = getNative(root, 'Set'); /** * Creates a set of `values`. * * @private * @param {Array} values The values to add to the set. * @returns {Object} Returns the new set. */ var createSet = !(Set && (1 / setToArray(new Set([,-0]))[1]) == INFINITY) ? noop : function(values) { return new Set(values); }; /** * 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 = object[key]; return isNative(value) ? value : undefined; } /** * Converts `func` to its source code. * * @private * @param {Function} func The function to process. * @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 ''; } /** * 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 correctly classified, * 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 which returns 'object' for typed array and weak map constructors, // and PhantomJS 1.9 which returns 'function' for `NodeList` instances. var tag = isObject(value) ? objectToString.call(value) : ''; return tag == funcTag || tag == genTag; } /** * Checks if `value` is the * [language type](http://www.ecma-international.org/ecma-262/6.0/#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 a native function. * * @static * @memberOf _ * @since 3.0.0 * @category Lang * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is a native function, * else `false`. * @example * * _.isNative(Array.prototype.push); * // => true * * _.isNative(_); * // => false */ function isNative(value) { if (!isObject(value)) { return false; } var pattern = (isFunction(value) || isHostObject(value)) ? reIsNative : reIsHostCtor; return pattern.test(toSource(value)); } /** * A no-operation function that returns `undefined` regardless of the * arguments it receives. * * @static * @memberOf _ * @since 2.3.0 * @category Util * @example * * var object = { 'user': 'fred' }; * * _.noop(object) === undefined; * // => true */ function noop() { // No operation performed. } module.exports = createSet;