How to clean node_modules folder of packages that are not in package.json?

Question

Assume I install project packages with npm install that looks into package.json for modules to be installed. After a while I see that I don\'t need

Answer 1

I think you're looking for npm prune

npm prune [ [

This command removes "extraneous" packages. If a package name is provided, then only packages matching one of the supplied names are removed.

Extraneous packages are packages that are not listed on the parent package's dependencies list.

See the docs: https://docs.npmjs.com/cli/prune