--- /dev/null
+"use strict";
+
+Object.defineProperty(exports, "__esModule", {
+ value: true
+});
+exports.default = concat;
+function concat(eachfn, arr, fn, callback) {
+ var result = [];
+ eachfn(arr, function (x, index, cb) {
+ fn(x, function (err, y) {
+ result = result.concat(y || []);
+ cb(err);
+ });
+ }, function (err) {
+ callback(err, result);
+ });
+}
+module.exports = exports["default"];
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