vercel__next.js/test/e2e/url/app/api/route.js

import fs from 'fs'
import { fileURLToPath } from 'url'

import imported from '../../public/vercel.png'
const url = new URL('../../public/vercel.png', import.meta.url)

export function GET(req, res) {
  let size
  try {
    size = fs.readFileSync(fileURLToPath(url)).length
  } catch (e) {
    size = e.message
  }

  return Response.json({ imported: imported.src, url: url.toString(), size })
}