paretojs/src/extra/debounce.ts

An extremely small, intuitive and fast functional utility library for JavaScript

const debounce = (
  fn: Function,
  wait: number = 100,
  immediate: boolean = false
) => (...args: any[]) => {
  const obj = this;
  let timeout;

  const delayed = () => {
    if (!immediate) fn.apply(obj, args);
    timeout = null;
  };

  if (timeout) clearTimeout(timeout);
  else if (immediate) fn.apply(obj, args);

  timeout = setTimeout(delayed, wait);
};

export default debounce;