Comment by rarkins

Renovate's TS tooling seems to work fine otherwise, and for ts-remove-unused as a new tool wanting to get adoption then you should be aiming to work the way your users already work, and not fail + tell them that they are the ones which need to change.

BTW the VSCode extension which someone else linked to discovered everything perfectly, which is another hint that your tool needs to improve, not your users.

Even if tsconfig.json was very important, and the users are all wrong and you're right, the only thing your readme says is: "The CLI will respect the tsconfig.json for loading source files." which is insufficient.