NPM5 has completely screwed npm link development for multi-module developers who need to develop 1 feature among more than one package without craziness.
This just opens your package.json, looks at the dependencies and then links to any directories it finds in the parent that match your dependencies.
You can do it without installing using: npx module-auto-link -c 'npm-auto-link'
now you can just execute npm-auto-link and not continually downgrading or playing the relink dance.
Enjoy,
-Abbey Hawk Sparrow