I’m sorry to say that I doubt you are going to be able to resolve this in the way you desire. TypeScript (specifically TSC) disallows explicit extensions for ts/tsx files… It has to do with implicit file extensions in imports, and how ts/tsx files are compiled down to js/jsx files. The world may not be happy about it, but it seems to be the way that it is.
You could use // @ts-ignore, but then I think you would lose intellisense
Update: it has come to my attention from comments below that some TypeScript tools do allow extensions. Evidently Deno requires them, though I have not worked with Deno. The TSC compiler disallows them.