If you have components in your package which extends classes from different external packages and the external packages have classes with the same names and folder structures all members, attributes,... are mixed in to the declarations of your component.

This is because the inheritance applier in the post processing phase is not including the npm package in to the checks while building up the inheritanceChain.

I prepared a fixture to explain the problem in detail here.

Expected behaviour
The inherited members should be the ones from the imported classes and not a mix of all classes with the same name.