Returning ArrayBuffer returns empty JSON object

[MickL]

Environment

H3: 1.13.1-20241208-012300-10e98be

Describe the bug

From unjs/unstorage#519

Returning an ArrayBuffer in an event handler seems to set response body to an empty JSON object. At least it does with unstorage and Cloudflare D2:

import { defineEventHandler } from 'h3';
import { useStorage } from 'nitro/runtime';

export default defineEventHandler(async (event) => {
  return useStorage('files').getItemRaw('some-key');
});