/** * Copyright (c) 2015-present, Facebook, Inc. * All rights reserved. * * 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 ReactPerfStallHandler * @flow */ 'use strict'; const JSEventLoopWatchdog = require('JSEventLoopWatchdog'); const ReactPerf = require('ReactPerf'); const ReactPerfStallHandler = { register: function() { ReactPerf.start(); JSEventLoopWatchdog.addHandler({ onStall: () => { ReactPerf.stop(); ReactPerf.printInclusive(); ReactPerf.printWasted(); ReactPerf.start(); }, onIterate: () => { ReactPerf.stop(); ReactPerf.start(); }, }); }, }; module.exports = ReactPerfStallHandler;