All files / app/utilities throttle.ts

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// https://codeburst.io/throttling-and-debouncing-in-javascript-646d076d0a44
 
export function throttle(fn, delay) {
  let lastCall = 0;
  return function(...args) {
    const now = new Date().getTime();
    if (now - lastCall < delay) {
      return;
    }
    lastCall = now;
    return fn(...args);
  };
}