Bun.Transpiler cannot transpile arrow functions with type parameters

[aquapi]

What version of Bun is running?

1.1.42+50eec0025

What platform is your computer?

Linux 6.8.0-51-generic x86_64 x86_64

What steps can reproduce the bug?

Write a transpile.ts file:

console.log(new Bun.Transpiler({ loader: "tsx" }).transformSync(await Bun.file('./index.ts').text()))

And a index.ts file:

export const t = <T>(x: T): T => x;

What is the expected behavior?

It should transpiles without any errors.

What do you see instead?

1 | export const t = <T>(x: T): T => x;
                        ^
error: Syntax Error
    at input.tsx:1:21

Bun v1.1.42 (Linux x64)

Additional information

No response