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'];