select.js
1 'use strict'; 2 3 Object.defineProperty(exports, "__esModule", { 4 value: true 5 }); 6 7 var _filter2 = require('./internal/filter'); 8 9 var _filter3 = _interopRequireDefault(_filter2); 10 11 var _eachOf = require('./eachOf'); 12 13 var _eachOf2 = _interopRequireDefault(_eachOf); 14 15 var _awaitify = require('./internal/awaitify'); 16 17 var _awaitify2 = _interopRequireDefault(_awaitify); 18 19 function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; } 20 21 /** 22 * Returns a new array of all the values in `coll` which pass an async truth 23 * test. This operation is performed in parallel, but the results array will be 24 * in the same order as the original. 25 * 26 * @name filter 27 * @static 28 * @memberOf module:Collections 29 * @method 30 * @alias select 31 * @category Collection 32 * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over. 33 * @param {Function} iteratee - A truth test to apply to each item in `coll`. 34 * The `iteratee` is passed a `callback(err, truthValue)`, which must be called 35 * with a boolean argument once it has completed. Invoked with (item, callback). 36 * @param {Function} [callback] - A callback which is called after all the 37 * `iteratee` functions have finished. Invoked with (err, results). 38 * @returns {Promise} a promise, if no callback provided 39 * @example 40 * 41 * async.filter(['file1','file2','file3'], function(filePath, callback) { 42 * fs.access(filePath, function(err) { 43 * callback(null, !err) 44 * }); 45 * }, function(err, results) { 46 * // results now equals an array of the existing files 47 * }); 48 */ 49 function filter(coll, iteratee, callback) { 50 return (0, _filter3.default)(_eachOf2.default, coll, iteratee, callback); 51 } 52 exports.default = (0, _awaitify2.default)(filter, 3); 53 module.exports = exports['default'];