import type { Metric } from "web-vitals"; const reportWebVitals = (onPerfEntry?: (metric: Metric) => void) => { if (onPerfEntry && onPerfEntry instanceof Function) { import("web-vitals").then(({ onCLS, onFCP, onLCP, onTTFB, onINP }) => { onCLS(onPerfEntry); onFCP(onPerfEntry); onLCP(onPerfEntry); onTTFB(onPerfEntry); onINP(onPerfEntry); }); } }; export default reportWebVitals;