label-studio/src/utils/debounce.js

Data Labeling Tool that is backend agnostic and can be embedded into your applications

/**
 * Returns a function, that, as long as it continues to be invoked,
 * will not be triggered. The function will be called after it
 * stops being called for N milliseconds. If `immediate` is passed,
 * trigger the function on the leading edge, instead of the trailing.
 *
 * @param {function} func
 * @param {number} wait
 * @param {boolean} immediate
 */
export function debounce(func, wait, immediate) {
  let timeout;

  return function() {
    const context = this,
      args = arguments;
    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);
  };
}