diff --git a/Javascript/javscript desgin patters/singleton-pattern.js b/Javascript/javscript desgin patters/singleton-pattern.js
new file mode 100644
index 0000000..e7ede09
--- /dev/null
+++ b/Javascript/javscript desgin patters/singleton-pattern.js	
@@ -0,0 +1,9 @@
+// example from Java
+
+export const createSingleton = (createInstance) => {
+    let instance;
+
+    return {
+        getInstance: () => (instance || createInstance())
+    };
+};
\ No newline at end of file
diff --git a/feature1.js b/feature1.js
index ec68e21..2de2111 100644
--- a/feature1.js
+++ b/feature1.js
@@ -2,3 +2,5 @@
 const feature = 'newFeature1'
 
 const updatingFeatureFileOnMain = 'main'
+
+const updateFeature = '-Hi';
diff --git a/feature3.js b/feature3.js
new file mode 100644
index 0000000..a13001e
--- /dev/null
+++ b/feature3.js
@@ -0,0 +1,4 @@
+// this is another feature branch
+const feat = 'feature3'
+
+const additionalToFreature = ''
\ No newline at end of file