open-gsio/packages/client/server/index.ts

import { renderPage } from 'vike/server';

// This is what makes SSR possible. It is consumed by @open-gsio/server

export { handleSsr };

async function handleSsr(url: string, headers: Headers) {
  const pageContextInit = {
    urlOriginal: url,
    headersOriginal: headers,
    fetch: (...args: Parameters<typeof fetch>) => fetch(...args),
  };
  const pageContext = await renderPage(pageContextInit);
  const { httpResponse } = pageContext;
  const stream = httpResponse.getReadableWebStream();
  return new Response(stream, {
    headers: httpResponse.headers,
    status: httpResponse.statusCode,
  });
}