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GitHub - jamiebuilds/react-performance-observer: Get performance measurements fr...
source link: https://github.com/jamiebuilds/react-performance-observer
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README.md
react-performance-observer
Get performance measurements from React Fiber
Install
yarn add --dev react-performance-observer
Usage
react-performance-observer
is a small abstraction over PerformanceObserver
which reports only the measurements that come from React and parses information
out of the name (See ReactDebugFiberPerf).
import { observe } from 'react-performance-observer'; observe(measurements => { console.log(measurements); // [ // { // entryType: "measure", // name: "⚛ App [mount]", // componentName: "App", // phase: "mount", // startTime: 281, // duration: 4, // warning: null // }, // ... // ] });
Or if you want to create your own PerformanceObserver
you can use just the
parseEntry()
method.
import { parseEntry } from 'react-performance-observer'; let observer = new window.PerformanceObserver(list => { list.getEntries().forEach(entry => { console.log(parseEntry(entry)); // parsed entry or null }); });
This code was largely based on react-perf-devtool by @nitin42.
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