Can't import other TypeScript files without compiling them

[mihe]

Importing other TypeScript files, whether it's other TSU files or just utility files, need to be compiled down to .js files first, which quickly becomes tedious and error-prone. It would be nice if this could be solved in some way.

The current workaround for importing other TSU files is to import them using the UE/ prefix, like:

import * as Thing from 'UE/TBP_Thing';