Function unwatchFile

lib/fs.js:3153–3178

* Stops watching for changes on `filename`. * @param {string | Buffer | URL} filename * @param {() => any} [listener] * @returns {void}

(filename, listener)

 * @returns {void}
 */
function unwatchFile(filename, listener) {
  const h = vfsState.handlers;
  if (h !== null) {
    if (h.unwatchFile(filename, listener)) return;
  }
  filename = getValidatedPath(filename);
  filename = pathModule.resolve(filename);
  const stat = statWatchers.get(filename);

  if (stat === undefined) return;
  const watchers = require('internal/fs/watchers');
  if (typeof listener === 'function') {
    const beforeListenerCount = stat.listenerCount('change');
    stat.removeListener('change', listener);
    if (stat.listenerCount('change') < beforeListenerCount)
      stat[watchers.kFSStatWatcherAddOrCleanRef]('clean');
  } else {
    stat.removeAllListeners('change');
    stat[watchers.kFSStatWatcherAddOrCleanRef]('cleanAll');
  }

  if (stat.listenerCount('change') === 0) {
    stat.stop();
    statWatchers.delete(filename);
  }
}


let splitRoot;