Add Step

step.js

@@ -0,0 +1,27 @@
+// Inspired by http://github.com/willconant/flow-js
+function Step() {
+  var steps = Array.prototype.slice.call(arguments);
+  var counter;
+  var results;
+
+  function next(result) {
+    if (steps.length <= 0) { return; }
+    var fn = steps.shift();
+    counter = 0;
+    results = [];
+    fn.apply(next, result);
+  }
+  next.parallel = function () {
+    counter++;
+    return function () {
+      counter--;
+      results.push(arguments);
+      if (counter <= 0) {
+        next(results);
+      }
+    }
+  };
+
+  next([]);
+}
+module.exports = Step;