method StatWatcher.ref
Usage in Deno
```typescript import { type StatWatcher } from "node:node__fs.d.ts"; ```
StatWatcher.ref(): this
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.
this