Init. Map does not function and only working on backend at the moment.

node_modules/after/index.js

@@ -0,0 +1,28 @@
+module.exports = after
+
+function after(count, callback, err_cb) {
+    var bail = false
+    err_cb = err_cb || noop
+    proxy.count = count
+
+    return (count === 0) ? callback() : proxy
+
+    function proxy(err, result) {
+        if (proxy.count <= 0) {
+            throw new Error('after called too many times')
+        }
+        --proxy.count
+
+        // after first error, rest are passed to err_cb
+        if (err) {
+            bail = true
+            callback(err)
+            // future error callbacks will go to error handler
+            callback = err_cb
+        } else if (proxy.count === 0 && !bail) {
+            callback(null, result)
+        }
+    }
+}
+
+function noop() {}