node.js - Watch a folder and execute an action when that happen

node.js.x.watch-folder.js

//@a Watch a folder and do something with the changes
var watchPath = "/www/x/fs_watch_folder_1811051535/tests";
console.log("Watching test path: " + watchPath);

var fs = require("fs");
var sleep = require("sleep");

fs.watch(watchPath, (eventType, filename) => {
  console.log(eventType);
  // could be either 'rename' or 'change'. new file event and delete
  // also generally emit 'rename'
  console.log(filename);
});