'use strict';
  
  Object.defineProperty(exports, "__esModule", {
    value: true
  });
  
  var _concat = require('./internal/concat');
  
  var _concat2 = _interopRequireDefault(_concat);
  
  var _doParallel = require('./internal/doParallel');
  
  var _doParallel2 = _interopRequireDefault(_doParallel);
  
  function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }
  
  /**
   * Applies `iteratee` to each item in `coll`, concatenating the results. Returns
   * the concatenated list. The `iteratee`s are called in parallel, and the
   * results are concatenated as they return. There is no guarantee that the
   * results array will be returned in the original order of `coll` passed to the
   * `iteratee` function.
   *
   * @name concat
   * @static
   * @memberOf module:Collections
   * @method
   * @category Collection
   * @param {Array|Iterable|Object} coll - A collection to iterate over.
   * @param {AsyncFunction} iteratee - A function to apply to each item in `coll`,
   * which should use an array as its result. 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).
   * @example
   *
   * async.concat(['dir1','dir2','dir3'], fs.readdir, function(err, files) {
   *     // files is now a list of filenames that exist in the 3 directories
   * });
   */
  exports.default = (0, _doParallel2.default)(_concat2.default);
  module.exports = exports['default'];