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

Due to its folder nesting Windows can’t delete the folder as its name is too long. To solve this, install RimRaf:

npm install rimraf -g

rimraf node_modules