'use strict';
  
  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  
  var _concat = require('./internal/concat');
  
  var _concat2 = _interopRequireDefault(_concat);
  
  var _doSeries = require('./internal/doSeries');
  
  var _doSeries2 = _interopRequireDefault(_doSeries);
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  /**
   * The same as [`concat`]{@link module:Collections.concat} but runs only a single async operation at a time.
   *
   * @name concatSeries
   * @static
   * @memberOf module:Collections
   * @method
   * @see [async.concat]{@link module:Collections.concat}
   * @category Collection
   * @param {Array|Iterable|Object} coll - A collection to iterate over.
   * @param {AsyncFunction} iteratee - A function to apply to each item in `coll`.
   * The iteratee should complete with an array an array of results.
   * Invoked with (item, callback).
   * @param {Function} [callback(err)] - A callback which is called after all the
   * `iteratee` functions have finished, or an error occurs. Results is an array
   * containing the concatenated results of the `iteratee` function. Invoked with
   * (err, results).
   */
  exports.default = (0, _doSeries2.default)(_concat2.default);
  module.exports = exports['default'];