finished

vault.js

@@ -1,4 +1,21 @@
 'use strict';
 module.exports = function() {
-
+   let vault = {};
+   let setValue = function (key,value) {
+       vault[key] = value;
+       return vault;
+    }
+
+    let getValue = function (key) {
+        if(key === undefined || !vault[key]){
+            return null;
+        }else{
+            return vault[key]
+        }
+    }
+return{
+    setValue: setValue,  
+    getValue: getValue,
+}
+
 };