diff --git a/index.js b/index.js
index e69de29bb2..cfb7aba8a4 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,21 @@
+var recipes = {}
+
+function updateObjectWithKeyAndValue(object, key, value) {
+return Object.assign ({}, object, {[key]: value})
+}
+
+function  destructivelyUpdateObjectWithKeyAndValue(object, key, value) {
+object[key] = value
+return object 
+}
+
+function deleteFromObjectByKey(object, key) {
+const newObj = Object.assign({}, object)
+delete newObj[key]
+return newObj
+}
+
+function destructivelyDeleteFromObjectByKey(object, key) {
+delete object[key]
+return object
+}
\ No newline at end of file