* fix: update error message to clarify usage with radio inputs
* show an extra bind checked error when a radio type
* typo
* replace 'group' binding with , drive-by fix some other messages
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* fix: depend on reads of deriveds created within reaction (async mode)
As part of https://github.com/sveltejs/kit/pull/14481 we discovered that deriveds created within reactions and reading from them in that same reaction is actually useful in some cases, as such a use case we couldn't imagine yet in #15564 has appeared.
We think it's ultimately better to rerun on those cases, so we're going to make this change in async mode (that way the behavior doesn't change unless you have enabled the experimental flag)
* fix tests
Fixes#16816Fixes#16811
---------
Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* feat: First pass at payload
* first crack
* snapshots
* checkpoint
* fix: cloning
* add test option
* big dumb
* today's hard work; few tests left to fix
* improve
* tests passing no wayyyyy yo
* lots of progress, couple of failing tests around selects
* meh
* solve async tree stuff
* fix select/option stuff
* whoop, tests
* simplify
* feat: hoisting
* fix: `$effect.pending` sends updates to incorrect boundary
* changeset
* stuff from upstream
* feat: first hydrationgaa
* remove docs
* snapshots
* silly fix
* checkpoint
* meh
* ALKASJDFALSKDFJ the test passes
* chore: Update a bunch of tests for hydration markers
* chore: remove snippet and is_async
* naming
* better errors for sync-in-async
* test improvements
* idk man
* merge local branches (#16757)
* use fragment as async hoist boundary
* remove async_hoist_boundary
* only dewaterfall when necessary
* unused
* simplify/fix
* de-waterfall awaits in separate elements
* update snapshots
* remove unnecessary wrapper
* fix
* fix
* remove suspends_without_fallback
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* Update payload.js
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* checkpoint
* got the extra children to go away
* just gonna go ahead and merge this as the review comments take up too much space
* chore: remove hoisted_promises (#16766)
* chore: remove hoisted_promises
* WIP optimise promises
* WIP
* fix <slot> with await in prop
* tweak
* fix type error
* Update packages/svelte/src/compiler/phases/3-transform/server/visitors/SvelteHead.js
* chore: fix hydration treeshaking (#16767)
* chore: fix hydration treeshaking
* fix
* remove await_outside_boundary error (#16762)
* chore: remove unused analysis.boundary (#16763)
* chore: simplify slots (#16765)
* chore: simplify slots
* unused
* Apply suggestions from code review
* chore: remove metadata.pending (#16764)
* Update packages/svelte/src/compiler/phases/3-transform/server/visitors/SnippetBlock.js
* put this back where it was, keep the diff small
* Update packages/svelte/src/compiler/phases/types.d.ts
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* chore: remove analysis.state.title (#16771)
* chore: remove analysis.state.title
* unused
* chore: remove is_async (#16769)
* chore: remove is_async
* unused
* Apply suggestions from code review
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* cleanup
* lint
* clean up payload a bit
* compiler work
* run ssr on sync and async
* prettier
* inline capture
* Update packages/svelte/src/compiler/phases/3-transform/server/visitors/EachBlock.js
* chore: simplify build_template (#16780)
* small tweak to aid greppability
* chore: fix SSR context (#16781)
* at least passing
* cleanup
* fix
* remove push/pop from exports, not needed with payload
* I think this is better but tbh not sure
* async SSR
* qualification
* errors:
* I have lost the plot
* finally
* ugh
* tweak error codes to better align with existing conventions, such as they are
* tweak messages
* remove unused args
* DRY out a bit
* unused
* unused
* unused
* simplify - we can enforce readonly at a type level
* unused
* simplify
* avoid magical accessors
* simplify algorithm
* unused
* unused
* reduce indirection
* TreeState -> SSRState
* mark deprecated methods
* grab this.local from parent directly
* rename render -> fn per conventions (fn indicates 'arbitrary code')
* reduce indirection
* Revert "reduce indirection"
This reverts commit 3ec461baad.
* tweak
* okay works this time
* no way chat, it works
* fix context stuff
* tweak
* make it chainable
* lint
* clean up
* lint
* Update packages/svelte/src/internal/server/types.d.ts
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* sunset html for async
* types
* we use 'deprecated' in other messages
* oops
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
#16773 added a test with _expected.html to a wrong suit, so it was ignored, and this allowed to slip in a new bug of printing the falsy hidden attribute as hidden (shortened enabled form).
That fix wasn't released yet, so no changeset.
* chore: generate CSS hash using the filename
* fix all tests but one
* slightly kludgy fix
* try this
* fix
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
Consolidates our scheduling system that had diverged into two - queue_micro_task and Batch.ensure-queues and resolves some edge case race conditions related to flushSync along the way.
* fix: send `$effect.pending` count to the correct boundary
* make boundary.pending private, use boundary.is_pending consistently
* move error to correct place
* we need that error
* update JSDoc
When an async derived already has a previous promise that is still pending, we were not accessing the `then` property of the new promise. If that property access causes signals to be read, that meant that those dependencies were lost and as such the derived wouldn't rerun anymore when it should. The fix is to make sure to always access the thennable.
* fix : remove cursor manipulation for input bindings
Old Fix: Restore input binding selection position (#14649)
Current Fix: Remove unnecessary cursor manipulation as the presence of runes no longer requires special handling.
* fix : add change set to my previous commit
* Revert "fix : add change set to my previous commit"
This reverts commit 6ca8ef3f97.
* fix: revert previous changeset added new to fix lint errors
* chore : resolve lint error to fix pipeline issue
* Revert "fix: revert previous changeset added new to fix lint errors"
This reverts commit 91094949a6.
* fix: input binding to handle code in a synchronous manner
Introduced Promise.resolve to ensure that the 'set' operation completes before the 'get' operation Minimizing update delays.
* Fix: resolve cursor jumps and change sets
* better fix
* test
* changeset
* simplify
* failing test
* gah we can't fix the input in an effect, need to do it here, but after a tick so that changes have been flushed through each blocks
* add explanatory comment
* fix test
* this seems to work?
---------
Co-authored-by: Hariharan Srinivasan <hariharan.srinivasan@kadfire.com>
Co-authored-by: Rich Harris <rich.harris@vercel.com>
Fixes#16591
This PR introduces a check for builtin custom elements (is attribute) inside the set_custom_element_data helper in order to correctly set properties that have a setter.
Implemented by reusing the `async_body` function inside `Fragment.js`. Also removes the ability to reference a `{@const ...}` of an implicit child inside a boundary pending/failed snippet:
- existing duplication of consts can have unintended side effects, e.g. async consts would unexpectedly called multiple times
- what if a const is the reason for the failure of a boundary, but is then referenced in the failed snippet?
- what if an async const is referenced in a pending snippet? deadlock
- inconsistent with how it behaves for components where this already does not work
Implemented via the experimental flag so the behavior change only applies there as this is a breaking change strictly speaking. Also added a compiler error for this.
closes#16462
* fix: properly catch top level await errors
async errors within the template and derived etc are properly handled because they know about the last active effect and invoke the error boundary correctly as a response. This logic was missing for our top level await output.
Fixes#16613
* test
* use helper for async bodies (#16641)
* use helper for async bodies
* unused
* fix
* failing test + fix
---------
Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* fix: skip effects inside dynamic component that is about to be destroyed
When a dynamic component was updated to a different instance and its props were updated at the same time, effects inside the component were still called with the already-changed props.
The fix is to mark the branch as skipped to never got to those effects.
Fixes#16387
* undo accidental commit
* fix: wrap `abort` in `without_reactive_context`
* only call without_reactive_context when the controller exists
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* Update for TS7
I am testing Typescript 7's JS support, which I've largely rewritten
during the switch to Go. That means Javascript code will need to change
much more than Typescript code. Fortunately, most of the changes are for
the better: Javascript semantics are now nearly identical to Typescript
semantics. It's much stricter and no longer has some persistent bugs
that arose from shady JS handling I wrote years ago.
This PR changes Svelte so that it compiles both with TS5.* and TS7,
which means that occasionally there are duplicative or non-obvious
changes. I'll annotate the interesting changes to explain why I made them.
Because TS7 is quite a way off, I don't know whether you'll want to take
this PR. Most of the changes are for the better, because they're due to
stricter TS-aligned checking. But some are neutral and there is the
previously mentioned duplication in a few places.
* add changeset
* revert scribbles mistakenly added
* pnpm run format
* revert mistaken edit
* return to function declarations w/type tag
* add job to ci.yml
* skipLibCheck for now
* no need for a changeset here
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
Co-authored-by: Rich Harris <hello@rich-harris.dev>
* fix: emit `snippet_invalid_export` instead of `undefined_export` for exported snippets
* try this
* this should work
* remove some junk (this never did anything)
* add test
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* fix: throw on duplicate class field declarations
* doh
* handle assignment in constructor
* fix
* apply suggestion from review
* fix
* fix failing test
* don't mark_reactions inside decrement, it can cause infinite loops
* revert mark_reactions changes
* preserve DIRTY/MAYBE_DIRTY status of deferred effects
* changeset
* tweak
* - add state changes resulting from an $effect to a separate new batch
- schedule rerunning effects based on the sources that are dirty, not just rerunning them all blindly (excempting async effects which will have run by that time already)
* test
* better fix
* tests
* this fixes the last test somehow
* fix#16477
* typo
* copy over changeset from #16477
* copy over changeset from #16464
* changeset
* dedupe
* move flushing_sync check inside Batch.ensure
* unused
* flushing_sync -> is_flushing_sync
* remove flush_effects method
* dedupe declaration
* tweak
* tweak
* update comment — it _does_ feel slightly wrong, but no wronger than the rest of this cursed function
---------
Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>
Increment the version to ensure any dependent deriveds are marked dirty when the subscription is picked up again later. If we didn't do this then the comparison of write versions would determine that the derived has a later version than the subscriber, and it would not be re-run.
Fixes#16311Fixes#15888
The prior logic was wrong because it reexecuted when something was clean, but we want to when it's not. The remaining fix was to also check the reactions: If an effect is destroyed and it was the last reaction of a derived then the derived is set to `MAYBE_DIRTY`. We therefore also need to check if the derived still has anyone listening to it, and only then reexecute it.
Fixes#16363
Fixes#16134
* Add a warning when the misuse of `reset` in an `error:boundary` causes an error to be thrown when flushing the boundary content
* Prevent uncaught errors to make test fails when they are expected and are fired during template effects flush
* reset should just be a noop after the first call
* correctly handle errors inside boundary during reset
* handle errors in the correct boundary
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
#16268 introduced a slight regression where the state is not reset completely upon compilation. It did reset warnings but not other state, which meant if file A succeeds but file B fails in the parsing state (before the state was reset for real) it would get wrong filename info. This fixes it by setting the filename at the very beginning.
* tidy
* tidy
* yes it can, apparently
* tidy up
* unused
* complete merge
* WIP
* simplify
* debugging help
* WIP
* unused
* partial merge
* WIP
* fix
* add test
* rename
* fix
* unused
* oops
* chore: merge main into async branch (#16197)
* chore: merge main into async branch
* adjust test
* fix: make effects depend on state created inside them (#16198)
* make effects depend on state created inside them
* fix, add github action
* disable test in async mode
* make batch.#deferred private
* fix settled when awaits occur inside pending boundary
* tweak
* change behaviour of `tick()` to be requestAnimationFrame-based
* get rid of a bunch of Promise.resolve chains
* more
* more
* fix test
* disallow `flushSync()` inside effects
* regenerate
* handle errors in block expressions
* make validate_each_keys async-aware
* for unowned deriveds, throw errors lazily
* rename ASYNC_ERROR -> ERROR_VALUE, and avoid conflicts with other flags now that it's used with deriveds as well as sources
* invoke boundary directly
* local effect pending
* update test
* fix
* fix
* fix weird bug in tests
* delete old changeset that somehow got left over here
* Update .changeset/eleven-weeks-dance.md
* update error details
* unused
* simplify
* tweak
* tweak
* tweak
* tweak
* tidy up
* handle errors in async block expressions
* tweak
* groundwork for async attribute_effect
* dry out
* fix async directives
* tidy up
* initialize option values before initing select values
* simplify init_select
* simplify
* tweak
* tidy up
* tweak
* on second thoughts just simplify it here
* tidy
* handle awaits in `<slot>`
* unused
* tidy up
* tidy up
* dry out
* dry out
* Revert "dry out"
This reverts commit 25855163bf.
* dry out
* dry out
* use let for block-scoped stuff
* dry out
* dry out
* tidy up
* only wrap awaits in `$.save` when necessary
* oops
* remove TODO comment (just checked)
* oops, leftover
* simplify
* unused
* remove logging
* tweak
* unused
* unused
* remove logging
* partial fix
* fix
* remove unused EFFECT_HAS_DERIVED
* Update packages/svelte/src/reactivity/create-subscriber.js
Co-authored-by: Elliott Johnson <sejohnson@torchcloudconsulting.com>
* Update packages/svelte/src/index-client.js
Co-authored-by: Elliott Johnson <sejohnson@torchcloudconsulting.com>
* Update packages/svelte/src/internal/client/runtime.js
Co-authored-by: Elliott Johnson <sejohnson@torchcloudconsulting.com>
* unused
* Update packages/svelte/src/internal/client/reactivity/sources.js
Co-authored-by: Elliott Johnson <sejohnson@torchcloudconsulting.com>
* Update packages/svelte/src/internal/client/reactivity/deriveds.js
Co-authored-by: Elliott Johnson <sejohnson@torchcloudconsulting.com>
* Update packages/svelte/src/internal/client/reactivity/deriveds.js
Co-authored-by: Elliott Johnson <sejohnson@torchcloudconsulting.com>
* prettier
* unused
* fix flags
* tweak
* tweak
* unused
* fix
* no idea what a 'boundary micro task' is or why it was deemed necessary but evidently it isn't
* remove queue_boundary_micro_task
* oops
* note
* tidy up
* remove TODO
* make method private
* simplify
* flesh out await_reactivity_loss warning
* tweak
* update test
* fix
* null out from_async_derived in more places
* tidy up test
* failing test
* unused
* fix test
* fix
* simplify. no idea what the async_mode_flag stuff is about, but it appears unnecessary
* add async_derived_orphan error
* regenerate
* flesh out await_outside_boundary message
* add some JSDoc
* only update `$effect.pending()` if someone is listening, since it causes a double flush and makes debugging harder
* tweak logic to make it clearer why and when we commit a batch
* add a couple of comments
* false -> 0
* add comment
* unused
* silence warning
* add effect_pending_outside_reaction error
* Update packages/svelte/src/compiler/types/index.d.ts
Co-authored-by: Elliott Johnson <sejohnson@torchcloudconsulting.com>
* suspend batch, not boundary
* rename from_async_derived -> current_async_derived
* tweak
* remove TODO - this method is only called when pending snippet exists
* use error boundary for test - vitest does some weird error swallowing afaict
* flush less often
* restore -> activate
* remove TODO
* move batch-related code into batch.js
* make flush_queued_root_effects a method of batch
* make process_effects a method of batch
* make stuff private
* unused
* regenerate
* update test
* more JSDoc
* add more JSDoc
* branch and block effects do not also need to be render effects
* tidy up
* simplify
* unused
* move code where it belongs
* remove, for now
* fix
* only apply error adjustments when error escapes boundaries
* remove EFFECT_IS_UPDATING
* is_dirty is a better name than check_dirtiness
* duplicates are rare and harmless
* apparently we no longer need the merging logic? we can simplify and fix stuff by removing it
* tidy
* don't commit stale batches
* add skipped failing test
* partial merge
* WIP
* WIP
* WIP
* tweak
* tidy up
* dont update derived status when time-travelling
* tidy up
* tidy up
* tag async deriveds
* tweak
* bail out of secondary flushes
* re-run blocks on subsequent flushes
* add test
* fix
* add tests, one failing
* fix
* flesh out await_waterfall message
* tidy up
* dry out
* unused
* tweak
* tidy up
* TODO
* tweak
* tidy up
* remove TODO
* unused export
* add optimisation back
* revert unneeded changes
* revert
* update some tests
* more
* more
* move some code
* rename
* WIP
* unset context synchronously
* remove unused argument
* Apply suggestions from code review
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* add comment
* add comment
* use queue_micro_task in createSubscriber
* Update packages/svelte/src/compiler/phases/3-transform/client/visitors/AwaitExpression.js
Co-authored-by: Elliott Johnson <sejohnson@torchcloudconsulting.com>
* prettier
---------
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>
Co-authored-by: Elliott Johnson <sejohnson@torchcloudconsulting.com>
* fix: use `state` instead of `source` in reactive classes
* fix: use `active_reaction` as indication to use `source` or `state`
* fix: cleanup `#initial_reaction` on `teardown` to free memory
* fix: use `#source` in `set` too
* unused
* chore: use WeakRef
* use update_version instead of WeakRef in SvelteSet/SvelteMap (#16324)
* tidy up
* tweak comment to remove active_reaction reference
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* Store deriveds old value before updating them for consistency with directly assigned sources when reading in teardown functions
* Add tests for derived old values in teardown functions
* Add tests for props old values in onDestroy hooks to prevent regressions
* Add changeset
* Update comment
* remove extraneous tests - these pass with or without the src change
* revert
* WIP
* simplify props
* simplify
* tweak
* reorder a bit
* simplify
* unused
* more
* more
* tweak
* also appears to be unnecessary
* changeset
* fix
* Update .changeset/light-rivers-jump.md
* easier debugging
* fix
* WIP
* fix
---------
Co-authored-by: raythurnvoid <53383860+raythurnvoid@users.noreply.github.com>
* feat: add parent hierarchy to `__svelte_meta` objects at dev time
This adds a `parent` property to the `__svelte_meta` properties that are added to elements at dev time. This property represents the closest non-element parent the element is related to. For example for `{#if ...}<div>foo</div>{/if}` the `parent` of the div would be the line/column of the if block.
The parent is recursive and goes upwards (through component boundaries) until the root component is reached, which has no parent.
part of #11389
* oops
* Apply suggestions from code review
Co-authored-by: Rich Harris <rich.harris@vercel.com>
* tweak
* original component tag
* make render appear in tree, keep tree in sync when rerenders occur
---------
Co-authored-by: Rich Harris <rich.harris@vercel.com>
#16270 removed a condition which seemed to keep passing the corresponding test, but it actually introduced a regression since the PROPS_IS_UPDATED is always set when accessors should be created, which is the case by default in legacy mode tests. Setting accessors to false in the test reveals the regression, so this reverts that part of the refactoring
Yuki Ishii
ComputerGuy
Rich Harris
Jakub Kolesár
LeeWxx
7nik
Simon H
Elliott Johnson
dai
hariharan
Edoardo Cavazza
Harsh Mandan
Paolo Ricciuti
Nathan Shively-Sanders
Ray Thurn Void
Ahmad S.