diff --git a/index.js b/index.js
index e69de29bb2..7d17d29496 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,23 @@
+var obj = {}
+
+function updateObjectWithKeyAndValue(obj, key, value){
+  return Object.assign ({}, obj, { [key]: value });
+}
+
+function destructivelyUpdateObjectWithKeyAndValue (obj, key, value){
+  obj.prop2 = 2
+  return obj;
+}
+
+function deleteFromObjectByKey(obj, key){
+  var obj = { prop: 1 }
+  var newObj = Object.assign({}, obj)
+  delete newObj.prop
+  return newObj
+  return obj
+}
+
+function destructivelyDeleteFromObjectByKey(obj, key){
+  delete obj.prop;
+  return obj;
+}