But you should have still tried it on the Staging server to begin with. That's the responsible method. The fact that you'd have to rebuild your staging server

But you should have still tried it on the Staging server to begin with. That's the responsible method. The fact that you'd have to rebuild your staging server is exactly why you should have tested it there. Sure NPM shouldn't have broken this but any number of things can cause issues during deployment and it's your job to check for them before pushing it out