chapter 02: worsen the genericEncoder adding the method prepareData that also violates the open/closed principle

Author: devcorpio

chapter-02-the-open-closed-principle/genericEncoder.js

@@ -16,6 +16,24 @@ function genericEncoder() {
         return encoder.encode(data);
     }
 
+    function prepareData(data, format) {
+        switch (format) {
+            case 'json': {
+                data = this.forceArray(data);
+                data = this.fixKeys(data);
+            }
+            case 'xml': {
+                data = this.fixAttributes(data);
+                break;
+            }
+            default: {
+                throw new Error('Format not supported');
+            }
+        }
+
+        return data;
+    }
+
     return {
         encodeToFormat,
     };