chapter 02: creating a encodeFactory whose only responsibility is to …

…create encoders based in the given format

chapter-02-the-open-closed-principle/refactor/encoderFactory.js

@@ -0,0 +1,23 @@
+const jsonEncoder = require('./jsonEncoder');
+const xmlEncoder = require('./xmlEncoder');
+const yamlEncoder = require('./yamlEncoder');
+
+function encoderFactory() {
+    function createForFormat(format) {
+        if (format === 'json') {
+            return jsonEncoder();
+        } else if (format === 'xml') {
+            return xmlEncoder();
+        } else if (format === 'yml') {
+            return yamlEncoder();
+        }
+
+        throw new Error('Unknown format');
+    }
+
+    return {
+        createForFormat,
+    };
+}
+
+module.exports = encoderFactory;