chore: read the request state from the event instead of threading it alongside

[Nic-Polumeyv]

RequestState is threaded as an (event, state) pair through 16 functions, and the request store exists only to carry the same pair.

The state is now a field of the event, read as event.state, so the store carries the event alone and the 16 signatures take event by itself.

Stacked on #16968.

[pkg-svelte-dev]

Install the latest version of @sveltejs/kit from 25cc00e:

pnpm add https://pkg.svelte.dev/@sveltejs/kit/c/25cc00ed0130fb6be65c61ab0969c06e96999dbc

Open in pkg.svelte.dev: https://pkg.svelte.dev/repos/kit/pr/16969

[changeset-bot]

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[svelte-docs-bot]

Preview: https://svelte-dev-git-preview-kit-16969-svelte.vercel.app/

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📝 Walkthrough

Walkthrough

The request context model now stores RequestEvent values separately from RequestState. Server rendering, actions, data loading, errors, endpoints, fetch, and remote functions derive state from the event. Request-store helpers and explicit state parameters are removed. Remote queries, forms, commands, prerendering, path handling, and tests use the new event APIs.

Priority: ➖ Normal — Schedule the request-state refactor because it changes context handling and function signatures across SvelteKit’s server rendering, actions, data loading, remote functions, and error paths.

Merge Risk: 🟠 High · up to c89e3

Server remote-function code cannot load, and some existing fetch construction paths can fail after the event migration. These regressions should be fixed before merge.

🚥 Pre-merge checks | ✅ 1 | ❌ 1

❌ Failed checks (1 warning)

Check name	Status	Explanation	Resolution
Backward Compatibility Impact Disclosure	⚠️ Warning	The commit introduces an undocumented breaking change. It removes get_request_store, try_get_request_store, and with_request_store from the exported @sveltejs/kit/internal/server entry point, …	Add a changeset for @sveltejs/kit with major severity. Start its description with breaking: and document the removed request-store exports and their replacements: get_event, try_get_event, and with_event. Document the `RequestSt…

✅ Passed checks (1 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title uses the required chore: prefix and accurately describes the main request-state change.

Full details: Backward Compatibility Impact Disclosure

Explanation

The commit introduces an undocumented breaking change. It removes get_request_store, try_get_request_store, and with_request_store from the exported @sveltejs/kit/internal/server entry point, and removes RequestStore. The package export map exposes that entry point. The commit adds no .changeset file, and no existing changeset documents these removals with the required major level and breaking: prefix.

Resolution

Add a changeset for @sveltejs/kit with major severity. Start its description with breaking: and document the removed request-store exports and their replacements: get_event, try_get_event, and with_event. Document the RequestStore type removal if it is part of the supported interface.

✨ Finishing Touches 💡 1

🛠️ Fix failing CI checks 💡

• Create stacked PR
• Commit on current branch

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Actionable comments posted: 2

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Inline comments:
In `@packages/kit/src/runtime/app/server/remote/query.js`:
- Around line 241-242: Update both resource callbacks in create_query_resource
to pass their captured event into enqueue, rather than relying on get_event()
during deferred execution; ensure enqueue accepts and uses that event when
scheduling batch work. Add a regression test covering query.batch with the
non-AsyncLocalStorage context implementation.

In `@packages/kit/src/runtime/server/fetch.js`:
- Line 18: Update the create_fetch test setups in page/load_data.spec.js so each
event fixture includes a request and is initialized with set_state(event, state)
before create_fetch is called, preserving the existing fetch behavior
assertions.

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• packages/kit/src/exports/hooks/sequence.js
• packages/kit/src/exports/hooks/sequence.spec.js
• packages/kit/src/exports/internal/server/event.js
• packages/kit/src/exports/internal/server/index.js
• packages/kit/src/runtime/app/paths/server.js
• packages/kit/src/runtime/app/server/remote/command.js
• packages/kit/src/runtime/app/server/remote/form.js
• packages/kit/src/runtime/app/server/remote/prerender.js
• packages/kit/src/runtime/app/server/remote/prerender.spec.js
• packages/kit/src/runtime/app/server/remote/query.js
• packages/kit/src/runtime/app/server/remote/requested.js
• packages/kit/src/runtime/app/server/remote/shared.js
• packages/kit/src/runtime/server/context.js
• packages/kit/src/runtime/server/data/index.js
• packages/kit/src/runtime/server/endpoint.js
• packages/kit/src/runtime/server/errors.js
• packages/kit/src/runtime/server/fetch.js
• packages/kit/src/runtime/server/page/actions.js
• packages/kit/src/runtime/server/page/data_serializer.js
• packages/kit/src/runtime/server/page/index.js
• packages/kit/src/runtime/server/page/load_data.js
• packages/kit/src/runtime/server/page/render.js
• packages/kit/src/runtime/server/page/respond_with_error.js
• packages/kit/src/runtime/server/remote-functions.js
• packages/kit/src/runtime/server/remote-functions.spec.js
• packages/kit/src/runtime/server/respond.js
• packages/kit/src/runtime/server/state.js
• packages/kit/src/types/internal.d.ts

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♻️ Duplicate comments (1)

packages/kit/src/runtime/app/server/remote/query.js (1)

240-241: 🎯 Functional Correctness | 🟠 Major | ⚡ Quick win

Keep the captured event for batch enqueueing.

get_response invokes this callback after await 0. On runtimes without AsyncLocalStorage, get_event() on Line 240 has no active event. query.batch() then fails before scheduling. Pass the captured event into enqueue from both resource callbacks.

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• packages/kit/src/exports/internal/server/index.js
• packages/kit/src/runtime/app/server/remote/command.js
• packages/kit/src/runtime/app/server/remote/prerender.spec.js
• packages/kit/src/runtime/app/server/remote/query.js
• packages/kit/src/runtime/app/server/remote/requested.js
• packages/kit/src/runtime/app/server/remote/shared.js
• packages/kit/src/runtime/server/data/index.js
• packages/kit/src/runtime/server/errors.js
• packages/kit/src/runtime/server/page/load_data.js
• packages/kit/src/runtime/server/page/render.js
• packages/kit/src/runtime/server/remote-functions.js
• packages/kit/src/runtime/server/respond.js
• packages/kit/src/types/internal.d.ts

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Actionable comments posted: 1

♻️ Duplicate comments (1)

packages/kit/src/runtime/app/server/remote/query.js (1)

240-241: ⚠️ Potential issue | 🟠 Major

Pass the captured event to enqueue.

After get_response awaits, get_event() can have no current event on runtimes without AsyncLocalStorage. query.batch then fails before it schedules. Accept event in enqueue and pass it from both resource callbacks.

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📒 Files selected for processing (13)

• packages/kit/src/exports/internal/server/context.js
• packages/kit/src/exports/internal/server/index.js
• packages/kit/src/runtime/app/server/remote/command.js
• packages/kit/src/runtime/app/server/remote/form.js
• packages/kit/src/runtime/app/server/remote/prerender.js
• packages/kit/src/runtime/app/server/remote/query.js
• packages/kit/src/runtime/app/server/remote/requested.js
• packages/kit/src/runtime/app/server/remote/shared.js
• packages/kit/src/runtime/server/data/index.js
• packages/kit/src/runtime/server/errors.js
• packages/kit/src/runtime/server/page/render.js
• packages/kit/src/runtime/server/remote-functions.js
• packages/kit/src/runtime/server/respond.js

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