[munchler]

There's no Javascript (or any other runtime) code in this at all. It all happens at compile-time.

[shepherdjerred]

But you probably are going to be running this as JS eventually

[munchler]

There's literally nothing to run. The source file is just a bunch of type declarations.

[mirekrusin]

If you transpile it to js, you'll get empty file.

[lozenge]

The real lesson isn't the output of our build system, it's the types we checked along the way.