watcher.ref()


调用时,只要 <fs.FSWatcher> 处于活动状态,就请求 Node.js 事件循环不退出。 多次调用 watcher.ref() 将不起作用。

默认情况下,所有 <fs.FSWatcher> 对象都被“引用”,这使得通常不需要调用 watcher.ref() 除非之前已经调用过 watcher.unref()

When called, requests that the Node.js event loop not exit so long as the <fs.FSWatcher> is active. Calling watcher.ref() multiple times will have no effect.

By default, all <fs.FSWatcher> objects are "ref'ed", making it normally unnecessary to call watcher.ref() unless watcher.unref() had been called previously.