const debounce = (func, wait, immediate) => {
  try {
    let timeout;
    return function() {
      const context = this;
      const args = arguments;
      const later = function() {
        timeout = null;
        if (!immediate) func.apply(context, args);
      };

      const callNow = immediate && !timeout;
      clearTimeout(timeout);
      timeout = setTimeout(later, wait);
      if (callNow) func.apply(context, args);
    };
  } catch (e) {
    console.log(e);
  }
};

const throttled = (delay, fn) => {
  let lastCall = 0;
  return (...args) => {
    const now = new Date().getTime();
    if (now - lastCall < delay) {
      return;
    }

    lastCall = now;
    return fn(...args);
  };
};