[feat] adding returned stuff from pages to $page store

[tanhauhau]

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🦋 Changeset detected

Latest commit: f8d82f9

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Name	Type
@sveltejs/kit	Patch

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[PuruVJ]

Kudos naming it stuff 🤣👍

[gterras]

Thanks for this game changer feature 👍

[ggjersund]

@tanhauhau I just started learning Svelte using Svelte-kit and I came across this issue with passing stuff from a child route to a parent layout file. I'm trying to pass a Load Error to a parent error file from the following path:
src/routes/admin/index.svelte -> src/routes/__error.svelte.

Should this work in you're case? or Do I have some sort of wrong implementation here? The error and status gets received by the parent _error page correctly, but not the stuff property.

<script context="module" lang="ts">
  export const load = async ({ params , fetch }) => {
    // Just triggering an error here for testing
    const url = `/admin/${params.index}.json`;
    const res = await fetch(url);
    if (res.ok) {
      return {
        props: {
          article: await res.json()
        }
      };
    }

    return {
      status: res.status,
      error: new Error(`Failed to find ${url}`),
      stuff: {
        page: "Admin"
      }
    };
  }
</script>

and then stuff should be retrievable from a parent __error.svelte page like this?

<script lang="ts">
    import { page } from '$app/stores';
</script>

<svelte:head>
  <title>ERROR PAGE</title>
</svelte:head>

<main>
  <h1>Failed to find {JSON.stringify($page.stuff)}</h1>
  <p>{`${$page.status}: ${$page.error.message}`}</p>
</main>