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function debounce(func, wait, immediate) {
  var timeout;
  return (...args) => {
    const context = this;
    args[0].persist();
    const later = () => {
      timeout = null;
      if (!immediate) func.apply(context, args);
    };
    const callNow = immediate && !timeout;
    clearTimeout(timeout);
    timeout = setTimeout(later, wait);
    if (callNow) func.apply(context, args);
  };
};