Throwing or returning in redirect inside a cache function used in load results in error

[cs-clarence]

Describe the bug

Given this code:

import { Title } from '@solidjs/meta';
import { RouteDefinition, cache, redirect } from '@solidjs/router';
import Counter from '~/components/Counter';

let isLoggedIn = false;

const redirectIfNotLoggedIn = cache(() => {
  if (!isLoggedIn) throw redirect('/login');

  return { data: 'test' };
}, 'redirect-if-not-logged-in');

export const route: RouteDefinition = {
  load: async () => await redirectIfNotLoggedIn(),
};

export default function Home() {
  return (
    <main>
      <Title>Hello World</Title>
      <h1>Hello world!</h1>
      <Counter />
      <p>
        Visit{' '}
        <a href="https://start.solidjs.com" target="_blank">
          start.solidjs.com
        </a>{' '}
        to learn how to build SolidStart apps.
      </p>
    </main>
  );
}

When returning a redirect from a cache function, this error occurs:

Error [ERR_HTTP_HEADERS_SENT]: Cannot set headers after they are sent to the client
    at __node_internal_captureLargerStackTrace2 (https://yqniqqmaogithub-cd2c.w-corp-staticblitz.com/builtins.5bf3667c.js:101:5335)
    at new NodeError (https://yqniqqmaogithub-cd2c.w-corp-staticblitz.com/builtins.5bf3667c.js:101:4149)
    at ServerResponse.setHeader (https://yqniqqmaogithub-cd2c.w-corp-staticblitz.com/builtins.5bf3667c.js:6:8796)
    at setResponseHeader (file:///home/projects/yqniqqmao.github/node_modules/h3/dist/index.mjs:908:18)
    at Module.eval (/home/projects/yqniqqmao.github/node_modules/vinxi/runtime/http.js:149:12)
    at eval (/home/projects/yqniqqmao.github/node_modules/@solidjs/start/dist/server/handler.js:101:29)
    at doShell (file:///home/projects/yqniqqmao.github/node_modules/solid-js/web/dist/server.js:358:7)
    at Object.onDone (file:///home/projects/yqniqqmao.github/node_modules/solid-js/web/dist/server.js:221:5)
    at Te.flush (file:///home/projects/yqniqqmao.github/node_modules/seroval/dist/esm/production/index.mjs:61:38999)
    at eval (file:///home/projects/yqniqqmao.github/node_modules/solid-js/web/dist/server.js:240:42) {
  code: 'ERR_HTTP_HEADERS_SENT'
}

Node.js 18.20.3

When throwing a redirect:

[UnhandledPromiseRejection: This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason "[object Response]".] {
  code: 'ERR_UNHANDLED_REJECTION'
}

Node.js 18.20.3

Your Example Website or App

https://stackblitz.com/edit/github-3nqamc?file=src%2Froutes%2Findex.tsx

Steps to Reproduce the Bug or Issue

1. Run the application
2. Visit the index route

Expected behavior

Returning/throwing a redirect in a cache function should redirect

Screenshots or Videos

No response

Platform

• OS: Fedora Linux
• Browser: Edge

Additional context

No response