How to clear the declarationDir before build #479
Description
I have a project https://github.com/unstoppablecarl/pinia-scope setup and working correctly. It generates the ts declarations in a types dir. It does not delete the dir first though. So if type data is removed when a file is deleted or moved it doesn't get updated when rollup runs. I cannot find anything in the documentation of rollup or typescript about this. Is there a way to do it? Seems like it should be doing this by default.