displayValue; const lcp = metrics['largest-contentful-paint'].displayValue; const cls = metrics['cumulative-layout-shift
time-to-interactive [14] web.dev: https://web.dev/cls/ [15] Cumulative Layout Shift: https://calibreapp.com/blog/cumulative-layout-shift
'interactive', 'speed-index', 'total-blocking-time', 'largest-contentful-paint', 'cumulative-layout-shift
cumulative-layout-shift-cls-what-it-is-how-to-optimize-your-website-for-it [14] CLS: https://www.onely.com/blog/cumulative-layout-shift