Dependencies - A Real Life Cautionary Tale

Yes it really terrible and when the dependencies is out of date or no longor maintained. But when develop an apps in your local pc, it is safer to cd into your apps path and use flag --save to add dependency into package.json. It also will put the installed package into node_modules folder inside your apps folder. So when transferring apps folder to live server, no longor worried about apps dependency. But for first time install like using express generator anything bad could happen if the dependency is pull of from NPM.

Keep calm.