3 Object.defineProperty(exports, "__esModule", {
6 exports.default = concat;
7 function concat(eachfn, arr, fn, callback) {
9 eachfn(arr, function (x, index, cb) {
10 fn(x, function (err, y) {
11 result = result.concat(y || []);
15 callback(err, result);
18 module.exports = exports["default"];