doc:add example function to fs.existsSync

nicolasrestrepo · nicolasrestrepo · commit 198b9696dd8b · 2019-06-21T17:10:43.000-05:00
diff --git a/doc/api/fs.md b/doc/api/fs.md
@@ -1763,6 +1763,11 @@ this API: [`fs.exists()`][].
 parameter to `fs.exists()` accepts parameters that are inconsistent with other
 Node.js callbacks. `fs.existsSync()` does not use a callback.
 
+```js
+if (fs.existsSync('/etc/passwd')) {
+  console.log('The file exists.');
+}
+```
 
 ## fs.fchmod(fd, mode, callback)
 <!-- YAML
