Add action creator generator helper as a lib

Author: calvinl

common/js/lib/generateActionCreator.js

@@ -0,0 +1,18 @@
+/* Generates an action creator.
+ * @param type [String] The action type as a constant, e.g. ADD_TODO
+ * @param [...propNames] [String] The string name of each action property as arguments
+ * @return [Object] The action creator.
+ * @example
+ */
+
+export default function generateActionCreator(type, ...propNames) {
+  return function actionCreator(...args) {
+    const actionProps = {};
+
+    propNames.forEach((prop, idx) => {
+      actionProps[prop] = args[idx];
+    });
+
+    return { type, ...actionProps };
+  };
+}