Stop Apple Spotlight from slowing down your Mac by preventing it to index node_modules folders

Speaking of node_modules folders, this tip by Roel Van Gils came to mind: Does your Mac becomes slow/unresponsive (fans kicking in etc.) when you `npm install` a huge project with a million tiny dependencies? I learned that adding an empty `.metadata_never_index` in /node_modules *beforehand* will prevent Spotlight from indexing all that crap. — Roel Van …