renderTemplate() - added named return var

makes unnamed function more self documenting

lib/formater.js

@@ -12,15 +12,17 @@
  */
 function renderTemplate(templateString, data) {
     return templateString.replace(/\/\*\[\|\s*(\w+)\s*\|]\*\/\s*0/g, function (_, key) {
+        let replacementString;
+
         if (!data || data[key] === undefined) {
-            return key;
+            replacementString = key;
+        } else if (typeof data[key] === "object") {
+            replacementString = JSON.stringify(data[key]);
+        } else {
+            replacementString = data[key];
         }
 
-        if (typeof data[key] === "object") {
-            return JSON.stringify(data[key]);
-        }
-
-        return data[key];
+        return replacementString;
     });
 }
 exports.renderTemplate = renderTemplate;