In the CASL docs it states that...

CASL has sophisticated support for TypeScript

But you can use plain Javascript. I want to know if the same is true for the @casl/prisma package. The example given seems to use Typescript (type AppAbility...)

And the docs say...

TypeScript Support: The Package is written in TypeScript...

But that sounds like it has support for TypeScript but if you want you can use vanilla Javascript.