If you're still looking for a solution to trigger haptic feedback in iOS PWAs, this library is exactly what you need 👇🏻

https://github.com/posaune0423/use-haptic

you can use like below

function HapticButton() {
  const { triggerHaptic } = useHaptic();
  return <button onClick={triggerHaptic}>Feel Haptic</button>;
}