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fix: deserialise streamed custom types#14261

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Rich-Harris merged 11 commits into
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fix-transport-stream
Aug 20, 2025
Merged

fix: deserialise streamed custom types#14261
Rich-Harris merged 11 commits into
mainfrom
fix-transport-stream

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@teemingc

@teemingc teemingc commented Aug 19, 2025

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fixes #13428

This PR ensures the app variable is available when the server pushes chunks to the client to decode custom data types as they stream in. This fixes streaming for split and single apps by wrapping the code that references app after an import statement, and providing the correct global variable for inline apps.

An additional test suite for inline apps has also been added since none existed before. However, feel free to remove it if it's too much just to test inline apps.


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changeset-bot Bot commented Aug 19, 2025

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🦋 Changeset detected

Latest commit: 23af149

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package
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@sveltejs/kit Patch

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@teemingc teemingc marked this pull request as ready for review August 20, 2025 06:21
@Rich-Harris

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golfed it a little bit so that we don't need to repeat the import, by passing a callback to resolve

@Rich-Harris Rich-Harris merged commit 69b6384 into main Aug 20, 2025
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@Rich-Harris Rich-Harris deleted the fix-transport-stream branch August 20, 2025 20:16
@github-actions github-actions Bot mentioned this pull request Aug 20, 2025
@teemingc

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golfed it a little bit so that we don't need to repeat the import, by passing a callback to resolve

Nice! Thanks for that

Copilot AI pushed a commit to Stadly/kit that referenced this pull request Mar 6, 2026
* add test

* add test for single apps

* wrap statement in app import

* add test for inlined apps

* format

* changeset

* fix lint errors

* fix

* leaner payloads

* fix

* tweak

---------

Co-authored-by: Rich Harris <rich.harris@vercel.com>
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Successfully merging this pull request may close these issues.

When streaming a promise from load that returns an object requiring serialization through transport. Uncaught ReferenceError: app is not defined ocurs

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