[WIP] modularization (#984)

1 files changed, 24 insertions, 0 deletions

diff --git a/lib/ensureAsync.js b/lib/ensureAsync.js
new file mode 100644
index 0000000..66de26b
--- /dev/null
+++ b/lib/ensureAsync.js
@@ -0,0 +1,24 @@
+'use strict';
+
+import restParam from 'lodash/function/restParam';
+
+import setImmediate from './internal/setImmediate';
+
+export default function ensureAsync(fn) {
+    return restParam(function (args) {
+        var callback = args.pop();
+        args.push(function () {
+            var innerArgs = arguments;
+            if (sync) {
+                setImmediate(function () {
+                    callback.apply(null, innerArgs);
+                });
+            } else {
+                callback.apply(null, innerArgs);
+            }
+        });
+        var sync = true;
+        fn.apply(this, args);
+        sync = false;
+    });
+}