57 строки
1.1 KiB
JavaScript
57 строки
1.1 KiB
JavaScript
/**
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* Copyright 2004-present Facebook. All Rights Reserved.
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*
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* @providesModule RCTRenderingPerf
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*/
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'use strict';
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var ReactDefaultPerf = require('ReactDefaultPerf');
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var ReactPerf = require('ReactPerf');
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var invariant = require('invariant');
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var perfModules = [];
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var enabled = false;
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var RCTRenderingPerf = {
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// Once perf is enabled, it stays enabled
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toggle: function() {
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console.log('Render perfomance measurements enabled');
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enabled = true;
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},
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start: function() {
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if (!enabled) {
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return;
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}
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ReactDefaultPerf.start();
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perfModules.forEach((module) => module.start());
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},
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stop: function() {
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if (!enabled) {
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return;
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}
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ReactDefaultPerf.stop();
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ReactDefaultPerf.printInclusive();
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ReactDefaultPerf.printWasted();
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perfModules.forEach((module) => module.stop());
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},
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register: function(module) {
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invariant(
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typeof module.start === 'function',
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'Perf module should have start() function'
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);
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invariant(
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typeof module.stop === 'function',
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'Perf module should have stop() function'
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);
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perfModules.push(module);
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}
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};
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module.exports = RCTRenderingPerf;
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