Yarn command to check for unused dependencies

[benatshippabo]

It would be nice if Yarn 2+ had some method to find unused dependencies listed in package.jsons. Similar to depcheck, but also analyzing the executables run by npm scripts and peer dependencies.

I feel like this may easily fit within @yarnpkg/doctor, since the package already figures out the list of all required dependencies and performs some form of analysis on the package.json

[wdfinch]

you should make a feature request.

[benatshippabo]

Done! #2744 (comment)