A simply javascript library for using performance api in both Node.js and web easier

$ npm i analysis.js --save

import { Analysis } from 'analysis.js';
...
const performance = Analysis.getPerformance();
performance.now();

const performanceObserver = Analysis.getPerformanceObserver();
const perf_observer = (list, observer) => { 
   // Process the "measure" event 
};
const observer2 = new performanceObserver(perf_observer); 
observer2.observe({entryTypes: ["measure"]});

Analysis.getPerformance() in web context will return window.performance, and in Node.js context will return perf_hooks.performance. So performance.getEntries() will not work in Node.js context, you will need to use PerformanceObserver to get the list.