mapValues.js
1 'use strict'; 2 3 Object.defineProperty(exports, "__esModule", { 4 value: true 5 }); 6 exports.default = mapValues; 7 8 var _mapValuesLimit = require('./mapValuesLimit'); 9 10 var _mapValuesLimit2 = _interopRequireDefault(_mapValuesLimit); 11 12 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } 13 14 /** 15 * A relative of [`map`]{@link module:Collections.map}, designed for use with objects. 16 * 17 * Produces a new Object by mapping each value of `obj` through the `iteratee` 18 * function. The `iteratee` is called each `value` and `key` from `obj` and a 19 * callback for when it has finished processing. Each of these callbacks takes 20 * two arguments: an `error`, and the transformed item from `obj`. If `iteratee` 21 * passes an error to its callback, the main `callback` (for the `mapValues` 22 * function) is immediately called with the error. 23 * 24 * Note, the order of the keys in the result is not guaranteed. The keys will 25 * be roughly in the order they complete, (but this is very engine-specific) 26 * 27 * @name mapValues 28 * @static 29 * @memberOf module:Collections 30 * @method 31 * @category Collection 32 * @param {Object} obj - A collection to iterate over. 33 * @param {AsyncFunction} iteratee - A function to apply to each value and key 34 * in `coll`. 35 * The iteratee should complete with the transformed value as its result. 36 * Invoked with (value, key, callback). 37 * @param {Function} [callback] - A callback which is called when all `iteratee` 38 * functions have finished, or an error occurs. `result` is a new object consisting 39 * of each key from `obj`, with each transformed value on the right-hand side. 40 * Invoked with (err, result). 41 * @returns {Promise} a promise, if no callback is passed 42 * @example 43 * 44 * async.mapValues({ 45 * f1: 'file1', 46 * f2: 'file2', 47 * f3: 'file3' 48 * }, function (file, key, callback) { 49 * fs.stat(file, callback); 50 * }, function(err, result) { 51 * // result is now a map of stats for each file, e.g. 52 * // { 53 * // f1: [stats for file1], 54 * // f2: [stats for file2], 55 * // f3: [stats for file3] 56 * // } 57 * }); 58 */ 59 function mapValues(obj, iteratee, callback) { 60 return (0, _mapValuesLimit2.default)(obj, Infinity, iteratee, callback); 61 } 62 module.exports = exports['default'];