astro-web-vitals-pocketbase/src/core/collect-vitals.ts

import { onCLS, onFCP, onINP, onLCP, onTTFB, type Metric } from "web-vitals";

/**
 * Start collecting web vitals metrics.
 * Each metric is reported to the provided callback function.
 */
export function setupMetricCollection(report: (metric: Metric) => void): void {
  onCLS(report);
  onLCP(report);
  onINP(report);
  onFCP(report);
  onTTFB(report);
}