node/test/fixtures/es-module-loaders/loader-resolve-next-modified.mjs

export async function resolve(url, context, next) {
  // This check is needed to make sure that we don't prevent the
  // resolution from follow-up loaders. It wouldn't be a problem
  // in real life because loaders aren't supposed to break the
  // resolution, but the ones used in our tests do, for convenience.
  if (url === 'node:fs' || url.includes('loader')) {
    return next(url);
  }

  const {
    format,
    url: nextUrl,
  } = await next(url, context);

  return {
    format,
    url: `${nextUrl}?foo`,
  };
}