Durable object method with return type "unknown" returns type "never" when used through its stub

[ctusch]

When a method on a durable object return a value of type unknown (or an object with a property of type unknown), calling that method on its stub gives a result of type never. Tested with latest wrangler 4.35.0 and 4.50.0.

export class ADurableObject extends DurableObject<Env> {
	async aMethod(): Promise<unknown> // or Promise<{ a: number, b: unknown}>
	{ ... }
}

export default { 
	async fetch(request: Request, env: Env) {
		const res = await env.ADurableObject.getByName('test').aMethod();
		// res is of type never
	}
}