export function startServer(
	handler: Deno.ServeHandler,
	hostname: string = "localhost",
	port: number = 8042,
): () => Promise<void> {
	const ac = new AbortController();
	const server = Deno.serve({ hostname, port, signal: ac.signal }, handler);

	return () => {
		ac.abort();
		return server.finished;
	};
}