chore: keep the call context on the event view instead of cloning the request state

[Nic-Polumeyv]

RequestState carries five booleans that are not about the request. is_in_render, is_in_remote_query, is_in_remote_prerender, is_in_remote_form_or_command and is_in_remote_function say what kind of code is on the stack, and the only way to flip one is to clone the whole state object and re-enter the store with the copy, at 11 sites and twice per query call. It only stays correct because every field mutated inside remote code lives under state.remote, which the spread shares by reference.

Kit already builds a per-call view of the event for remote functions (derive_remote_function_event, which makes url throw inside a query), so the kind of code running is a property of that view. derive_event(event, context) now builds every view and keeps the flags in a non-enumerable __ on it, the same idiom remote functions use for their internals; get_context(event) reads them. The flags accumulate through nested derivations exactly as the spreads did, so behaviour is unchanged, and RequestState keeps only per-request data. allow_cookies was every caller restating the same fact by hand (no cookies inside a query or prerender), so it is now derived from the context.

[pkg-svelte-dev]

Install the latest version of @sveltejs/kit from 1dd3e60:

pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/1dd3e6051c49e972f04888dd1e4cc2701e6f71f6

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/kit/pr/16968

[changeset-bot]

⚠️ No Changeset found

Latest commit: 1dd3e60

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[svelte-docs-bot]

Preview: https://svelte-dev-git-preview-kit-16968-svelte.vercel.app/