Function checkTimer

src/common/util.js:33–38

()

    else checkTimer();
  }
  function checkTimer() {
    if (!timer) {
      const delta = startTime - performance.now();
      timer = setTimeout(checkTime, delta);
    }
  }
  function debouncedFunction(...args) {
    startTime = performance.now() + time;
    callback = () => {