Alternative to setTimeout

gistfile1.txt

// These examples Block UI
let startTime = performance.now();
  while (performance.now() - startTime < 500) {
  //   // Do nothing for 500 ms to emulate extremely slow code
}
 
const wait = (ms) => {
  const start = Date.now();
  let now = start;

  while (now - start < ms) now = Date.now();
}