watcher.ref()
- 返回: <fs.StatWatcher>
调用时,只要 <fs.StatWatcher> 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.StatWatcher> 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()
。
- Returns: <fs.StatWatcher>
When called, requests that the Node.js event loop not exit so long as the
<fs.StatWatcher> is active. Calling watcher.ref()
multiple times will have
no effect.
By default, all <fs.StatWatcher> objects are "ref'ed", making it normally
unnecessary to call watcher.ref()
unless watcher.unref()
had been
called previously.