feat(utils): Add objectEntries to utils package (#271)

Summary:

Add objectEntries to utils package

Test plan:

Unit tests

Author: mjc1283

packages/utils/CHANGELOG.MD

@@ -7,6 +7,9 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 ## [Unreleased]
 Changes that have landed but are not yet released.
 
+### New Features
+- Added `objectEntries`
+
 ## [0.1.0] - March 1, 2019
 
-Initial release
+Initial release

packages/utils/__tests__/utils.spec.ts

@@ -1,5 +1,5 @@
 /// <reference types="jest" />
-import { isValidEnum, groupBy, objectValues, find, keyBy, sprintf } from '../src'
+import { isValidEnum, groupBy, objectEntries, objectValues, find, keyBy, sprintf } from '../src'
 
 describe('utils', () => {
   describe('isValidEnum', () => {
@@ -37,6 +37,12 @@ describe('utils', () => {
     })
   })
 
+  describe('objectEntries', () => {
+    it('should return object entries', () => {
+      expect(objectEntries({ foo: 'bar', bar: 123 })).toEqual([['foo', 'bar'], ['bar', 123]])
+    })
+  })
+
   describe('objectValues', () => {
     it('should return object values', () => {
       expect(objectValues({ foo: 'bar', bar: 123 })).toEqual(['bar', 123])

packages/utils/src/index.ts

@@ -62,6 +62,10 @@ export function objectValues<K>(obj: { [key: string]: K }): K[] {
   return Object.keys(obj).map(key => obj[key])
 }
 
+export function objectEntries<K>(obj: { [key: string]: K }): [string, K][] {
+  return Object.keys(obj).map(key => [key, obj[key]])
+}
+
 export function find<K>(arr: K[], cond: (arg: K) => boolean): K | undefined {
   let found