Function sleep

scripts/fb_autoRemoveSpamPostGroup_main.js:159–172

(time, cancelFn)

  }

  function sleep(time, cancelFn) {
    return new Promise((resolve) => {
      const timeout = setTimeout(resolve, time);
      if (cancelFn) {
        const interval = setInterval(() => {
          if (cancelFn()) {
            clearInterval(interval);
            clearTimeout(timeout);
            resolve();
          }
        }, 100);
      }
    });
  }

  function onElementsAdded(selector, callback, once) {
    let nodes = document.querySelectorAll(selector);