1  'use strict';
 2  
 3  Object.defineProperty(exports, "__esModule", {
 4    value: true
 5  });
 6  
 7  var _eachOfLimit = require('./eachOfLimit');
 8  
 9  var _eachOfLimit2 = _interopRequireDefault(_eachOfLimit);
10  
11  var _awaitify = require('./internal/awaitify');
12  
13  var _awaitify2 = _interopRequireDefault(_awaitify);
14  
15  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
16  
17  /**
18   * The same as [`eachOf`]{@link module:Collections.eachOf} but runs only a single async operation at a time.
19   *
20   * @name eachOfSeries
21   * @static
22   * @memberOf module:Collections
23   * @method
24   * @see [async.eachOf]{@link module:Collections.eachOf}
25   * @alias forEachOfSeries
26   * @category Collection
27   * @param {Array|Iterable|AsyncIterable|Object} coll - A collection to iterate over.
28   * @param {AsyncFunction} iteratee - An async function to apply to each item in
29   * `coll`.
30   * Invoked with (item, key, callback).
31   * @param {Function} [callback] - A callback which is called when all `iteratee`
32   * functions have finished, or an error occurs. Invoked with (err).
33   * @returns {Promise} a promise, if a callback is omitted
34   */
35  function eachOfSeries(coll, iteratee, callback) {
36    return (0, _eachOfLimit2.default)(coll, 1, iteratee, callback);
37  }
38  exports.default = (0, _awaitify2.default)(eachOfSeries, 3);
39  module.exports = exports['default'];