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JavaScript npm Basics Installing Packages with npm Installing Local Packages

Tip: Be aware of npm malware

Anybody with a (temporary) email address can add a package to npm. Obviously that is a doorway for malware to enter your system.

Read this article and do your own research.

A partial solution I have heard from multiple sources now is this npm command npm config set ignore-scripts true to disable npm's running of arbitrary shell scripts. It does have the downside of also breaking valid package installations that do more than just install JavaScript packages, but then at least you get to decide if it makes sense to make an exception for that package.

This is still only a partial solution, because when e.g. run from Node, the JavaScript of the package you use has access to your file system and network-access-wise might be inside your firewall.