Please add TypeScript paths support.

[matthew-dean]

Right now, this tool will simply transform TypeScript source code to ESM / CJS equivalents (and .d.ts files). However, this breaks down quickly if you're using the paths property in your tsconfig.json file, which is common in many TypeScript projects. Even if you get a Babel transform for TS paths, you're still left with invalid / unresolvable index.d.ts files, and consuming projects will complain about not being able to find types. It would be great if this tool just handled both automatically, transforming paths during output.