shebang and no file extension: how do I turn Typescript on?

I have scripts with a

#!/usr/bin/env deno run

#!/usr/bin/env deno run

shebang, but they execute as javascript —adding types lead to parsing errors.
Can I enable typescript with a command line parameter to

deno run

deno run

shebang and no file extension: how do I turn Typescript on? - Deno