react-activity-tracker/src/utils/trackPerformance.js

A library to track user interactions and API activity in React apps

// src/utils/trackPerformance.js
export function initPerformanceTracking(onTrack) {
    window.addEventListener('load', () => {
      const perf = performance.timing;
  
      onTrack({
        type: 'performance',
        pageLoad: perf.loadEventEnd - perf.navigationStart,
        dns: perf.domainLookupEnd - perf.domainLookupStart,
        connect: perf.connectEnd - perf.connectStart,
        time: new Date().toISOString(),
      });
    });
  }