Closes#9420.
This PR creates an $effect.pre (before beforeUpdate and an $effect (for afterUpdate) and, inside those, listen for all locally declared signals plus reactive props. This does mean that we need to link the locally declared signals to the component context (the reverse of the current behaviour, wherein we link the component context to locally declared signals).
fixes#10296
Also make sure to use the server export conditions when resolving Svelte imports from inside the server compiler output
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Co-authored-by: Rich Harris <rich.harris@vercel.com>
Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>
- Previously, any each block parents where used as keys for the sub group. That's wrong, it should only be using each blocks whos declarations contribute to the `bind:group` expression. Fixes#10345
- Only the left-most identifier of the expression was used to determine the binding group. This is wrong, all identifiers within the expression need to be taken into account. Fixes#9947
* fix: don't reuse proxies when state symbol refers to stale value
When somebody copies over the state symbol property onto a new object (you can retrieve the symbol by using `Reflect.ownKeys(...)`), it was wrongfully assumed that it always relates to the current value. This PR adds an additional check that this is actually the case.
This also adds a dev time warning when an object is frozen but contains a state property, which hints at a bug in user land.
fixes#10316
* lint
* rename
* remove warning
* update test
* changeset
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Co-authored-by: Rich Harris <rich.harris@vercel.com>
Co-authored-by: Rich Harris <richard.a.harris@gmail.com>
* strip typescript assertions before analysis
* add test
* changeset
* move ts handling from transform to before analysis
* format
* types
* remove unwrap_ts_expression
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Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>
We're now on Svelte v5.0.0-next.42 which made one test match the 42 of the next version instead of the number in the code, resulting in that test suddenly failing. This fixes the regex to replace that number with x's instead
* fix: improve unstate handling of non enumerable properties
* Update packages/svelte/src/internal/client/proxy.js
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Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
The generated types were invalid TypeScript ("cannot use unique symbol at this position"). Use utility types to ensure the types are not unpacked during type generation.
Leftover from #9988
* give this another try
* fix: lint
* fix: Forgot to save
* feat: it works boiiii
* look, ok, it did work, i just needed to update the snapshots
* bruh
* changeset
* feat: ok I think the client snippet block finally works
* feat: current tests pass; I'm sure I'm missing stuff for new things
* fix: snapshot
* feat: I think non-destructured rest should work now?
* chore: duplicated computation
* feat: Tests (passing and failing
* feat: it's... alive?
* chore: Clean up my messes
* chore: devtime stuff
* fix: fmt
* chore: see if this fixes repl
* chore: make naming more offensive
* fix: Don't throw on missing keys, return undefined as it usually would
* Update packages/svelte/src/compiler/phases/1-parse/state/tag.js
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* Update packages/svelte/src/compiler/phases/1-parse/state/tag.js
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* fix: Hopefully default param values now work
* dumb
* types
* feat: Test it
* fix: Turns out javascript parameters are optional
* feat: The Final Solution
* document function
* feat: Better bracket matching, unit tests
* feat: exclude test files from publish
* feat: More unit tests
* feat: Use more efficient parsing for @const
* Update .changeset/curvy-cups-cough.md
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* Update packages/svelte/package.json
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* Update packages/svelte/src/compiler/phases/1-parse/utils/bracket.js
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* fix: changesets
* chore: additional comments
* fix: kill foreach
* fix: foreach again
* feat: Docs
* Revert "fix: kill foreach"
This reverts commit 9a688cc543.
* fix: My own stupidity
* fix: style
* fix - maybe
* Update sites/svelte-5-preview/src/routes/docs/content/01-api/03-snippets.md
* Update tag.js
Co-authored-by: Rich Harris <richard.a.harris@gmail.com>
* Update .changeset/curvy-cups-cough.md
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* chore: Remove rest params
* Delete .changeset/eighty-rivers-wash.md
* fix: Honestly idk why it was broken but it's fixed now
* fix: var name lol
* fix: typegen
* fix: idk
* fix: It looks like a bunch of unformatted shit came in through main?? idk
* Revert "fix: It looks like a bunch of unformatted shit came in through main?? idk"
This reverts commit ab851d5627.
* fix: format again
* this is getting ridiculous
* Update tag.js
Co-authored-by: Rich Harris <richard.a.harris@gmail.com>
* fix errors
* simplify a bit
* use read_context
* use read_context for const as well
* remove unused code
* unused import
* unused export
* remove spread args. sorry elliott
* tidy up SnippetBlock interface
* fix test
* simplify
* tweak
* revert example, so that it matches the surrounding text
* move PropsWithChildren back to public.d.ts
* update typing docs, so that it flows from previous example
* temporarily revert const parsing changes, to get prettier working again (???)
* oops
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Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
Co-authored-by: Rich Harris <richard.a.harris@gmail.com>
Co-authored-by: Rich Harris <rich.harris@vercel.com>
Infer namespace from parents where possible, and do a runtime-best-effort where it's not statically known
fixes#9645
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Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>
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