Ownership validation had a false positive when rendering a component as slotted content of another component. To fix this, #11401 did set the current component context to the context the snippet was declared in, not to the context it is rendered in. This was flawed because it means that component context was altered in a way that setContext/getContext failed because the parent chain was incorrect. This fixes that by introducing a separate global (dev time only) which tracks the component function the ownership needs.
fixes #11429
Instead of using types that declare whether or not a type is bindable directly as part of the property, we're introducing a new for-types-only field to `SvelteComponent`: `$$bindings`, which is typed as the keys of the properties that are bindable (string by default, i.e. everything's bindable; for backwards compat). language-tools can then produce code that assigns to this property which results in an error we can display if the binding is invalid
closes #11356
* fix: handle reassignment of `$$props` and `$$restProps`
Some libraries assign to properties of `$$props` and `$$restProps`. These were previously resulting in an error but are now handled properly
https://github.com/sveltejs/svelte/issues/10359#issuecomment-2080067464
* $$props is coarse grained on updates, so we can simplify this
* fix
* fix comment
When spreading attributes, the setters of the element are checked. If they contain the key in question, it's set via that setter. For certain setters on certain elements this didn't work because the element prototype was not HTMLElement, rather a descendant of that (for example HTMLDivElement), which meant that only the setters of the descendant, not the superclass were taken into account. This fixes that by walking up the prototype chain until we find the Element prototype.
fixes #11179
* feat: leave view transition pseudo selectors untouched
view transition pseude selectors are global-like, i.e. they shouldn't be scoped or treated as unused.
In the process of adding support for this, is_root and is_host were consolidated into is_global_like because their usage locations didn't need any differentiation between them (same for the new view transition treatment)
closes #9127
* regenerate types
previously a reaction could be marked as DIRTY and subsequently as MAYBE_DIRTY before running, resulting in false negatives. Ensure that DIRTY flag can never be lowered to MAYBE_DIRTY
fixes #11363
at rules are now left alone and you can have nested css in them which is scoped correctly. This just adds a test so we don't regress in the future
closes #9267
Provides a migration function, exported as `migrate` from `svelte/compiler`, which tries its best to automatically migrate towards runes, render tags (instead of slots) and event attributes (instead of event handlers)
The preview REPL was updated with a migrate button so people can try it out in the playground.
closes #9239
* feat: only inject push/init/pop when necessary - closes #11297
* regenerate
* differentiate between safe/unsafe
* only inject $$props when necessary
* more
* fix
* simplify
* handle store subscriptions
* chore: directly export function in non-HMR mode
* remove some more noise
* update snapshots
* Update sites/svelte-5-preview/src/lib/workers/compiler/index.js
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
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Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* start reorganising messages
* tidy up
* more
* more
* more
* alphabetise
* consolidate
* more
* more
* more
* more
* more
* more
* alphabetise
* more
* this is no longer needed
* no longer necessary
* more
* more
* fix
* regenerate messages
* more
* more
* tighten up rune validation
* more
* fix
* more
* tweak a11y messages
* add server errors
* overhaul runtime errors
* regenerate messages
* unused
* lint
* more
* more
* Update packages/svelte/messages/compile-errors/script.md
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* Update packages/svelte/messages/client-warnings/warnings.md
Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* fix
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Co-authored-by: Simon H <5968653+dummdidumm@users.noreply.github.com>
* fix: mark `accessors` and `immutable` as deprecated
* add warnings for deprecated <svelte:options> attributes
* disable accessors in runes mode
* update tests
* tidy up
* the hell?
* regenerate types
* if I would get a dollar for every windows bug I fix I would be a millionaire by now
* return instance _and_ props in runes mode, move flushSync into shared code, don't set accessors in runes mode
* goddammit
* note breaking change
* fix
* regenerate messages
* Revert "return instance _and_ props in runes mode, move flushSync into shared code, don't set accessors in runes mode"
This reverts commit a47827e57d.
* pass instance to tests
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Co-authored-by: Simon Holthausen <simon.holthausen@vercel.com>
