Remove polyfills for 'Object.values' & 'Object.entries' (#2919)

Author: IvanGoncharov

.flowconfig

@@ -37,6 +37,7 @@ module.use_strict=true
 babel_loose_array_spread=true
 experimental.const_params=true
 include_warnings=true
+no_flowlib=true
 
 [version]
 ^0.142.0

.nycrc.yml

@@ -2,7 +2,6 @@ all: true
 include:
   - 'src/'
 exclude:
-  - 'src/polyfills'
   - '**/*-fuzz.js'
   - '**/*.d.ts'
 clean: true

.prettierignore

@@ -1,3 +1,5 @@
+/flow-typed
+
 # Copied from '.gitignore', please keep it in sync.
 /.eslintcache
 /node_modules

flow-typed/core.js

@@ -0,0 +1,5 @@
+declare class Process extends events$EventEmitter {
+  env : { [key: string] : string | void, ... };
+}
+
+declare var process: Process;

flow-typed/node.js

@@ -1,5 +1,3 @@
-import { objectEntries } from '../polyfills/objectEntries';
-
 import type { ObjMap } from './ObjMap';
 
 /**
@@ -12,7 +10,7 @@ export function mapValue<T, V>(
 ): ObjMap<V> {
   const result = Object.create(null);
 
-  for (const [key, value] of objectEntries(map)) {
+  for (const [key, value] of Object.entries(map)) {
     result[key] = fn(value, key);
   }
   return result;

src/jsutils/mapValue.js

@@ -1,5 +1,3 @@
-import { objectEntries } from '../polyfills/objectEntries';
-
 import type {
   ObjMap,
   ObjMapLike,
@@ -18,7 +16,7 @@ export function toObjMap(obj) {
   }
 
   const map = Object.create(null);
-  for (const [key, value] of objectEntries(obj)) {
+  for (const [key, value] of Object.entries(obj)) {
     map[key] = value;
   }
   return map;