/** * lodash 4.1.0 (Custom Build) * Build: `lodash modularize exports="npm" -o ./` * Copyright 2012-2016 The Dojo Foundation * Based on Underscore.js 1.8.3 * Copyright 2009-2016 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors * Available under MIT license */ var baseSlice = require('lodash._baseslice'), get = require('lodash.get'), rest = require('lodash.rest'), root = require('lodash._root'); /** Used as references for various `Number` constants. */ var INFINITY = 1 / 0; /** `Object#toString` result references. */ var symbolTag = '[object Symbol]'; /** Used to match property names within property paths. */ var reIsDeepProp = /\.|\[(?:[^[\]]*|(["'])(?:(?!\1)[^\\]|\\.)*?\1)\]/, reIsPlainProp = /^\w*$/, rePropName = /[^.[\]]+|\[(?:(-?\d+(?:\.\d+)?)|(["'])((?:(?!\2)[^\\]|\\.)*?)\2)\]/g; /** Used to match backslashes in property paths. */ var reEscapeChar = /\\(\\)?/g; /** * A faster alternative to `Function#apply`, this function invokes `func` * with the `this` binding of `thisArg` and the arguments of `args`. * * @private * @param {Function} func The function to invoke. * @param {*} thisArg The `this` binding of `func`. * @param {...*} args The arguments to invoke `func` with. * @returns {*} Returns the result of `func`. */ function apply(func, thisArg, args) { var length = args.length; switch (length) { case 0: return func.call(thisArg); case 1: return func.call(thisArg, args[0]); case 2: return func.call(thisArg, args[0], args[1]); case 3: return func.call(thisArg, args[0], args[1], args[2]); } return func.apply(thisArg, args); } /** Used for built-in method references. */ var objectProto = Object.prototype; /** * Used to resolve the [`toStringTag`](http://ecma-international.org/ecma-262/6.0/#sec-object.prototype.tostring) * of values. */ var objectToString = objectProto.toString; /** Built-in value references. */ var Symbol = root.Symbol; /** Used to convert symbols to primitives and strings. */ var symbolProto = Symbol ? Symbol.prototype : undefined, symbolToString = Symbol ? symbolProto.toString : undefined; /** * The base implementation of `_.invoke` without support for individual * method arguments. * * @private * @param {Object} object The object to query. * @param {Array|string} path The path of the method to invoke. * @param {Array} args The arguments to invoke the method with. * @returns {*} Returns the result of the invoked method. */ function baseInvoke(object, path, args) { if (!isKey(path, object)) { path = baseToPath(path); object = parent(object, path); path = last(path); } var func = object == null ? object : object[path]; return func == null ? undefined : apply(func, object, args); } /** * The base implementation of `_.toPath` which only converts `value` to a * path if it's not one. * * @private * @param {*} value The value to process. * @returns {Array} Returns the property path array. */ function baseToPath(value) { return isArray(value) ? value : stringToPath(value); } /** * Checks if `value` is a property name and not a property path. * * @private * @param {*} value The value to check. * @param {Object} [object] The object to query keys on. * @returns {boolean} Returns `true` if `value` is a property name, else `false`. */ function isKey(value, object) { if (typeof value == 'number') { return true; } return !isArray(value) && (reIsPlainProp.test(value) || !reIsDeepProp.test(value) || (object != null && value in Object(object))); } /** * Gets the parent value at `path` of `object`. * * @private * @param {Object} object The object to query. * @param {Array} path The path to get the parent value of. * @returns {*} Returns the parent value. */ function parent(object, path) { return path.length == 1 ? object : get(object, baseSlice(path, 0, -1)); } /** * Converts `string` to a property path array. * * @private * @param {string} string The string to convert. * @returns {Array} Returns the property path array. */ function stringToPath(string) { var result = []; toString(string).replace(rePropName, function(match, number, quote, string) { result.push(quote ? string.replace(reEscapeChar, '$1') : (number || match)); }); return result; } /** * Gets the last element of `array`. * * @static * @memberOf _ * @category Array * @param {Array} array The array to query. * @returns {*} Returns the last element of `array`. * @example * * _.last([1, 2, 3]); * // => 3 */ function last(array) { var length = array ? array.length : 0; return length ? array[length - 1] : undefined; } /** * Checks if `value` is classified as an `Array` object. * * @static * @memberOf _ * @type Function * @category Lang * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is correctly classified, 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 object-like. A value is object-like if it's not `null` * and has a `typeof` result of "object". * * @static * @memberOf _ * @category Lang * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is object-like, else `false`. * @example * * _.isObjectLike({}); * // => true * * _.isObjectLike([1, 2, 3]); * // => true * * _.isObjectLike(_.noop); * // => false * * _.isObjectLike(null); * // => false */ function isObjectLike(value) { return !!value && typeof value == 'object'; } /** * Checks if `value` is classified as a `Symbol` primitive or object. * * @static * @memberOf _ * @category Lang * @param {*} value The value to check. * @returns {boolean} Returns `true` if `value` is correctly classified, else `false`. * @example * * _.isSymbol(Symbol.iterator); * // => true * * _.isSymbol('abc'); * // => false */ function isSymbol(value) { return typeof value == 'symbol' || (isObjectLike(value) && objectToString.call(value) == symbolTag); } /** * Converts `value` to a string if it's not one. An empty string is returned * for `null` and `undefined` values. The sign of `-0` is preserved. * * @static * @memberOf _ * @category Lang * @param {*} value The value to process. * @returns {string} Returns the string. * @example * * _.toString(null); * // => '' * * _.toString(-0); * // => '-0' * * _.toString([1, 2, 3]); * // => '1,2,3' */ function toString(value) { // Exit early for strings to avoid a performance hit in some environments. if (typeof value == 'string') { return value; } if (value == null) { return ''; } if (isSymbol(value)) { return Symbol ? symbolToString.call(value) : ''; } var result = (value + ''); return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result; } /** * Creates a function that invokes the method at `path` of a given object. * Any additional arguments are provided to the invoked method. * * @static * @memberOf _ * @category Util * @param {Array|string} path The path of the method to invoke. * @param {...*} [args] The arguments to invoke the method with. * @returns {Function} Returns the new function. * @example * * var objects = [ * { 'a': { 'b': { 'c': _.constant(2) } } }, * { 'a': { 'b': { 'c': _.constant(1) } } } * ]; * * _.map(objects, _.method('a.b.c')); * // => [2, 1] * * _.invokeMap(_.sortBy(objects, _.method(['a', 'b', 'c'])), 'a.b.c'); * // => [1, 2] */ var method = rest(function(path, args) { return function(object) { return baseInvoke(object, path, args); }; }); module.exports = method;