diff --git a/index.js b/index.js
index e69de29bb2..498ecf2bbe 100644
--- a/index.js
+++ b/index.js
@@ -0,0 +1,27 @@
+
+// updateObjectWithKeyAndValue(object, key, value)
+function updateObjectWithKeyAndValue(object, key, value) {
+  var newObj = Object.assign({}, object, { [key]: value
+  })
+  return newObj
+}
+
+// destructivelyUpdateObjectWithKeyAndValue(object, key, value)
+function destructivelyUpdateObjectWithKeyAndValue(object, key, value) {
+  object[key] = value
+  return object
+}
+
+// deleteFromObjectByKey(object, key)
+function deleteFromObjectByKey(object, key) {
+  var newObj = Object.assign({}, object)
+  delete newObj[key]
+  return newObj
+}
+
+
+// destructivelyDeleteFromObjectByKey(object, key)
+function destructivelyDeleteFromObjectByKey(object, key) {
+  delete object[key]
+  return object
+}