react-native/Libraries/Core/setUpRegeneratorRuntime.js
Emily Janzer df2eaa9eb6 Modularize InitializeCore
Summary: Split up InitializeCore into a bunch of modules. The idea here is to make it easier for apps to just get the initialization logic they want and leave behind what they don't; for example, if you don't want the Map/Set polyfills, instead of requiring InitializeCore you can require the modules you want from it.

Reviewed By: yungsters

Differential Revision: D10842564

fbshipit-source-id: 3b12d54fddea8c4ee75886022338c214987a015c
2018-10-28 15:45:14 -07:00

27 lines
782 B
JavaScript

/**
* Copyright (c) Facebook, Inc. and its affiliates.
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*
* @flow strict-local
* @format
*/
'use strict';
const {polyfillGlobal} = require('PolyfillFunctions');
/**
* Set up regenerator.
* You can use this module directly, or just require InitializeCore.
*/
polyfillGlobal('regeneratorRuntime', () => {
// The require just sets up the global, so make sure when we first
// invoke it the global does not exist
delete global.regeneratorRuntime;
// regenerator-runtime/runtime exports the regeneratorRuntime object, so we
// can return it safely.
return require('regenerator-runtime/runtime'); // flowlint-line untyped-import:off
});