[RFC] Remove knowledge of fbjs from the packager

.flowconfig

@@ -14,12 +14,8 @@
 
 # Ignore react and fbjs where there are overlaps, but don't ignore
 # anything that react-native relies on
-.*/node_modules/fbjs/lib/Map.js
-.*/node_modules/fbjs/lib/Promise.js
 .*/node_modules/fbjs/lib/fetch.js
 .*/node_modules/fbjs/lib/ExecutionEnvironment.js
-.*/node_modules/fbjs/lib/isEmpty.js
-.*/node_modules/fbjs/lib/crc32.js
 .*/node_modules/fbjs/lib/ErrorUtils.js
 
 # Flow has a built-in definition for the 'react' module which we prefer to use

Libraries/Interaction/__tests__/InteractionManager-test.js

@@ -6,6 +6,7 @@
 
 jest
   .autoMockOff()
+  .mock('ErrorUtils')
   .mock('BatchedBridge');
 
 function expectToBeCalledOnce(fn) {

Libraries/Promise.js

@@ -1,30 +1,18 @@
 /**
+ * Copyright (c) 2016-present, Facebook, Inc.
+ * All rights reserved.
  *
- * Copyright 2013-2014 Facebook, Inc.
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
  *
  * @providesModule Promise
- *
- * This module wraps and augments the minimally ES6-compliant Promise
- * implementation provided by the promise npm package.
+ * @flow
  */
-
 'use strict';
 
-global.setImmediate = require('setImmediate');
-var Promise = require('promise/setimmediate/es6-extensions');
-require('promise/setimmediate/done');
+const Promise = require('fbjs/lib/Promise'); // this will require Promise.native.js
+
 if (__DEV__) {
   require('promise/setimmediate/rejection-tracking').enable({
     allRejections: true,
@@ -46,12 +34,4 @@ if (__DEV__) {
   });
 }
 
-/**
- * Handle either fulfillment or rejection with the same callback.
- */
-Promise.prototype.finally = function(onSettled) {
-  return this.then(onSettled, onSettled);
-};
-
-
 module.exports = Promise;