throw redirect causes error with status code 500 on the client

[HanielU]

Describe the bug

The /user/close/[plan]/+page.svelte with a +page.ts & load function that looks like this

import type { PageLoad } from "./$types";
import { get as getStoreValue } from "svelte/store";
import { redirect } from "@sveltejs/kit";
import { browser } from "$app/env";

export const load: PageLoad = () => {
  throw redirect(301, "/user");
};

returns an error with status code 500 when navigated to like this <a href="/user/close/magik">here</a>

But It redirects correctly on window refresh...

Reproduction

Here is a repo https://github.com/HanielU/kit-redirect-issue

Install dependencies

yarn

Start dev server

yarn dev

Logs

No Response

System Info

System:
    OS: Windows 10 10.0.19044
    CPU: (4) x64 Intel(R) Core(TM) i5-3437U CPU @ 1.90GHz
    Memory: 1.60 GB / 7.87 GB
  Binaries:
    Node: 16.15.0 - C:\Program Files\nodejs\node.EXE
    Yarn: 1.22.15 - C:\Program Files\nodejs\yarn.CMD
    npm: 8.5.5 - C:\Program Files\nodejs\npm.CMD
  Browsers:
    Edge: Spartan (44.19041.1266.0), Chromium (103.0.1264.71)
    Internet Explorer: 11.0.19041.1566
  npmPackages:
    @sveltejs/adapter-auto: next => 1.0.0-next.64
    @sveltejs/kit: ^1.0.0-next.422 => 1.0.0-next.422
    svelte: ^3.44.0 => 3.49.0
    vite: ^3.0.0 => 3.0.8

Severity

serious, but I can work around it

Additional Information

No response

[Rich-Harris]

This looks like a duplicate of #5952 — closing

[maximedupre]

@Rich-Harris This seems like a different issue.

I'm on 1.0.0-next.454 and throw redirect(302, '/') results in a 500 error if the navigation isn't made with the client router (e.g. it only occurs if you access the page directly).

The error gets captured in handleError → { status: 302, location: '/' }

[maximedupre]

@Rich-Harris @Conduitry Is it possible to reopen this issue? :)

[Conduitry]

This issue is a duplicate of #5952. If the issue you're having is a server-side redirect that's not working, that would be a separate issue, because this one is about client-side redirects. If you have a minimal reproduction, you should open a separate issue for it.