diff --git a/index.js b/index.js
index e69de29bb2..5f99d10361 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,19 @@
+function updateObjectWithKeyAndValue(object, key, value){
+  return Object.assign ({}, object, {[key] : value});
+}
+function destructivelyUpdateObjectWithKeyAndValue(object, key, value){
+  object[key] = value;
+  return object;
+}
+const object = { key: '3' };
+ 
+function deleteFromObjectByKey(object, key) {
+  var clone = Object.assign({}, object);
+  delete clone[key];
+  return clone;
+  }
+
+function destructivelyDeleteFromObjectByKey(object, key){
+delete object[key];
+return object;
+}
\ No newline at end of file