Installed peer dependencies are marked as unused

For example, babel-core is a peer dependency of babel-loader. It should not be marked as unused. The same goes for jasmine-core and karma-jasmine.

There are probably many more similar cases.

[robross0606]

This still appears to be happening. My project has a peer dependency on prom-client:

npm WARN prometheus-gc-stats@0.5.1 requires a peer of prom-client@>= 10 < 12 but none is installed. You must install peer dependencies yourself.

However, depcheck lists it as unused after installation:

C:\Code\code>depcheck --version
1.4.0

C:\Code\code>depcheck
Unused dependencies
* prom-client

[remcohaszing]

It works! Thanks 😄