Function wrap

src/utils.ts:60–62

(fn: Promise<T>)

  return "unknown error: " + JSON.stringify(err);
}

export async function wrap<T, E = unknown>(fn: Promise<T>): Promise<[T, null] | [null, E]> {
  return fn.then((data) => [data, null] as [T, null]).catch((err) => [null, err as unknown as E] as [null, E]);
}

export function jsonHeaders(): { "content-type": "application/json" } {