/** * Copyright (c) 2013-present, Facebook, Inc. * * This source code is licensed under the MIT license found in the * LICENSE file in the root directory of this source tree. * * @flow */ 'use strict'; import ExecutionEnvironment from 'fbjs/lib/ExecutionEnvironment'; import warning from 'fbjs/lib/warning'; if (__DEV__) { if ( ExecutionEnvironment.canUseDOM && typeof requestAnimationFrame !== 'function' ) { warning( false, 'React depends on requestAnimationFrame. Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills', ); } } export default requestAnimationFrame;