Binary package “node-chokidar” in ubuntu focal

wrapper around watch / watchFile / fsevents

 Chokidar does still rely on the Node.js core fs module, but when using
 fs.watch and fs.watchFile for watching, it normalizes the events it receives,
 often checking for truth by getting file stats and/or dir contents.
 .
 Node.js is an event-based server-side JavaScript engine.