chore(deps): update dependency svelte to v5.39.8

[renovate]

Note

Mend has cancelled the proposed renaming of the Renovate GitHub app being renamed to mend[bot].

This notice will be removed on 2025-10-07.

---

This PR contains the following updates:

Package	Change	Age	Confidence
svelte (source)	5.14.0 -> 5.39.8

---

Release Notes

sveltejs/svelte (svelte)

v5.39.8

Compare Source

Patch Changes

• fix: check boundary pending attribute at runtime on server (#​16855)

• fix: preserve tuple type in $state.snapshot (#​16864)

• fix: allow await in svelte:boundary without pending (#​16857)

• fix: update bind:checked error message to clarify usage with radio inputs (#​16874)

v5.39.7

Compare Source

Patch Changes

• chore: simplify batch logic (#​16847)

• fix: rebase pending batches when other batches are committed (#​16866)

• fix: wrap async children in $$renderer.async (#​16862)

• fix: silence label warning for buttons and anchor tags with title attributes (#​16872)

• fix: coerce nullish <title> to empty string (#​16863)

v5.39.6

Compare Source

Patch Changes

• fix: depend on reads of deriveds created within reaction (async mode) (#​16823)

• fix: SSR regression of processing attributes of <select> and <option> (#​16821)

• fix: async class: + spread attributes were compiled into sync server-side code (#​16834)

• fix: ensure tick resolves within a macrotask (#​16825)

v5.39.5

Compare Source

Patch Changes

• fix: allow {@​html await ...} and snippets with async content on the server (#​16817)

• fix: use nginx SSI-compatible comments for $props.id() (#​16820)

v5.39.4

Compare Source

Patch Changes

• fix: restore hydration state after await in <script> (#​16806)

v5.39.3

Compare Source

Patch Changes

• fix: remove outer hydration markers (#​16800)

• fix: async hydration (#​16797)

v5.39.2

Compare Source

Patch Changes

• fix: preserve SSR context when block expressions contain await (#​16791)

• chore: bump some devDependencies (#​16787)

v5.39.1

Compare Source

Patch Changes

• fix: issue state_proxy_unmount warning when unmounting a state proxy (#​16747)

• fix: add then to class component render output (#​16783)

v5.39.0

Compare Source

Minor Changes

• feat: experimental async SSR (#​16748)

Patch Changes

• fix: correctly SSR hidden="until-found" (#​16773)

v5.38.10

Compare Source

Patch Changes

• fix: flush effects scheduled during boundary's pending phase (#​16738)

v5.38.9

Compare Source

Patch Changes

• chore: generate CSS hash using the filename (#​16740)

• fix: correctly analyze <object.property> components (#​16711)

• fix: clean up scheduling system (#​16741)

• fix: transform input defaults from spread (#​16481)

• fix: don't destroy contents of svelte:boundary unless the boundary is an error boundary (#​16746)

v5.38.8

Compare Source

Patch Changes

• fix: send $effect.pending count to the correct boundary (#​16732)

v5.38.7

Compare Source

Patch Changes

• fix: replace undefined with void(0) in CallExpressions (#​16693)

• fix: ensure batch exists when resetting a failed boundary (#​16698)

• fix: place store setup inside async body (#​16687)

v5.38.6

Compare Source

Patch Changes

• fix: don't fail on flushSync while flushing effects (#​16674)

v5.38.5

Compare Source

Patch Changes

• fix: ensure async deriveds always get dependencies from thennable (#​16672)

v5.38.3

Compare Source

Patch Changes

• fix: ensure correct order of template effect values (#​16655)

• fix: allow async {@​const} in more places (#​16643)

• fix: properly catch top level await errors (#​16619)

• perf: prune effects without dependencies (#​16625)

• fix: only emit for_await_track_reactivity_loss in async mode (#​16644)

v5.38.2

Compare Source

Patch Changes

• perf: run blocks eagerly during flush instead of aborting (#​16631)

• fix: don't clone non-proxies in $inspect (#​16617)

• fix: avoid recursion error when tagging circular references (#​16622)

v5.38.1

Compare Source

Patch Changes

• fix: flush effects scheduled during boundary's pending phase (#​16738)

v5.38.0

Compare Source

Minor Changes

• feat: allow await inside @const declarations (#​16542)

Patch Changes

• fix: remount at any hydration error (#​16248)

• chore: emit await_reactivity_loss in for await loops (#​16521)

• fix: emit snippet_invalid_export instead of undefined_export for exported snippets (#​16539)

v5.37.3

Compare Source

Patch Changes

• fix: reset attribute cache after setting corresponding property (#​16543)

v5.37.2

Compare Source

Patch Changes

• fix: double event processing in firefox due to event object being garbage collected (#​16527)

• fix: add bindable dimension attributes types to SVG and MathML elements (#​16525)

• fix: correctly differentiate static fields before emitting duplicate_class_field (#​16526)

• fix: prevent last_propagated_event from being DCE'd (#​16538)

v5.37.1

Compare Source

Patch Changes

• chore: remove some todos (#​16515)

• fix: allow await expressions inside {#await ...} argument (#​16514)

• fix: append_styles in an effect to make them available on mount (#​16509)

• chore: remove parser.template_untrimmed (#​16511)

• fix: always inject styles when compiling as a custom element (#​16509)

v5.37.0

Compare Source

Minor Changes

• feat: ignore component options in compileModule (#​16362)

Patch Changes

• fix: always mark props as stateful (#​16504)

v5.36.17

Compare Source

Patch Changes

• fix: throw on duplicate class field declarations (#​16502)

• fix: add types for part attribute to svg attributes (#​16499)

v5.36.16

Compare Source

Patch Changes

• fix: don't update a focused input with values from its own past (#​16491)

• fix: don't destroy effect roots created inside of deriveds (#​16492)

v5.36.15

Compare Source

Patch Changes

• fix: preserve dirty status of deferred effects (#​16487)

v5.36.14

Compare Source

Patch Changes

• fix: keep input in sync when binding updated via effect (#​16482)

• fix: rename form accept-charset attribute (#​16478)

• fix: prevent infinite async loop (#​16482)

• fix: exclude derived writes from effect abort and rescheduling (#​16482)

v5.36.13

Compare Source

Patch Changes

• fix: ensure subscriptions are picked up correctly by deriveds (#​16466)

v5.36.12

Compare Source

Patch Changes

• chore: move capture_signals to legacy module (#​16456)

v5.36.10

Compare Source

Patch Changes

• fix: prevent batches from getting intertwined (#​16446)

v5.36.9

Compare Source

Patch Changes

• fix: don't reexecute derived with no dependencies on teardown (#​16438)

• fix: disallow export { foo as default } in <script module> (#​16447)

• fix: move ownership validation into async component body (#​16449)

• fix: allow async destructured deriveds (#​16444)

• fix: move store setup/cleanup outside of async component body (#​16443)

v5.36.8

Compare Source

Patch Changes

• fix: keep effect in the graph if it has an abort controller (#​16430)

• chore: Switch payload.out to an array (#​16428)

v5.36.7

Compare Source

Patch Changes

• fix: allow instrinsic <svelte:...> elements to inherit from SvelteHTMLElements (#​16424)

v5.36.6

Compare Source

Patch Changes

• fix: delegate functions with shadowed variables if declared locally (#​16417)

• fix: handle error in correct boundary after reset (#​16171)

• fix: make <svelte:boundary> reset function a noop after the first call (#​16171)

v5.36.5

Compare Source

Patch Changes

• fix: silence $inspect errors when the effect is about to be destroyed (#​16391)

• fix: more informative error when effects run in an infinite loop (#​16405)

v5.36.4

Compare Source

Patch Changes

• fix: avoid microtask in flushSync (#​16394)

• fix: ensure compiler state is reset before compilation (#​16396)

v5.36.3

Compare Source

Patch Changes

• fix: don't log await_reactivity_loss warning when signal is read in untrack (#​16385)

• fix: better handle $inspect on array mutations (#​16389)

• fix: leave proxied array length untouched when deleting properties (#​16389)

• fix: update $effect.pending() immediately after a batch is removed (#​16382)

v5.36.2

Compare Source

Patch Changes

• fix: add $effect.pending() to types (#​16376)

• fix: add pending snippet to <svelte:boundary> types (#​16379)

v5.36.1

Compare Source

Patch Changes

• fix: throw on duplicate class field declarations (#​16502)

• fix: add types for part attribute to svg attributes (#​16499)

v5.36.0

Compare Source

Minor Changes

• feat: support await in components when using the experimental.async compiler option (#​15844)

Patch Changes

• fix: silence a11y warning for inert elements (#​16339)

• chore: clean up a11y analysis code (#​16345)

v5.35.7

Compare Source

Patch Changes

• fix: silence autofocus a11y warning inside <dialog> (#​16341)

• fix: don't show adjusted error messages in boundaries (#​16360)

• chore: replace inline regex with variable (#​16340)

v5.35.6

Compare Source

Patch Changes

• chore: simplify reaction/source ownership tracking (#​16333)

• chore: simplify internal component pop() (#​16331)

v5.35.5

Compare Source

Patch Changes

• fix: associate sources in Spring/Tween/SvelteMap/SvelteSet with correct reaction (#​16325)

• fix: re-evaluate derived props during teardown (#​16278)

v5.35.4

Compare Source

Patch Changes

• fix: abort and reschedule effect processing after state change in user effect (#​16280)

v5.35.3

Compare Source

Patch Changes

• fix: account for mounting when select_option in attribute_effect (#​16309)

• fix: do not proxify the value assigned to a derived (#​16302)

v5.35.2

Compare Source

Patch Changes

• fix: bump esrap (#​16295)

v5.35.1

Compare Source

Patch Changes

• feat: add parent hierarchy to __svelte_meta objects (#​16255)

v5.35.0

Compare Source

Minor Changes

• feat: add getAbortSignal() (#​16266)

Patch Changes

• chore: simplify props (#​16270)

v5.34.9

Compare Source

Patch Changes

• fix: ensure unowned deriveds can add themselves as reactions while connected (#​16249)

v5.34.8

Compare Source

Patch Changes

• fix: untrack $inspect.with and add check for unsafe mutation (#​16209)

• fix: use fine grained for template if the component is not explicitly in legacy mode (#​16232)

• lift unsafe_state_mutation constraints for SvelteSet, SvelteMap, SvelteDate, SvelteURL and SvelteURLSearchParams created inside the derived (#​16221)

v5.34.7

Compare Source

Patch Changes

• fix: address css class matching regression (#​16204)

v5.34.6

Compare Source

Patch Changes

• fix: match class and style directives against attribute selector (#​16179)

v5.34.5

Compare Source

Patch Changes

• fix: keep spread non-delegated event handlers up to date (#​16180)

• fix: remove undefined attributes on hydration (#​16178)

• fix: ensure sources within nested effects still register correctly (#​16193)

• fix: avoid shadowing a variable in dynamic components (#​16185)

v5.34.4

Compare Source

Patch Changes

• fix: don't set state withing with_parent in proxy (#​16176)

• fix: use compiler-driven reactivity in legacy mode template expressions (#​16100)

v5.34.3

Compare Source

Patch Changes

• fix: don't eagerly execute deriveds on resume (#​16150)

• fix: prevent memory leaking signals in legacy mode (#​16145)

• fix: don't define error.message if it's not configurable (#​16149)

v5.34.2

Compare Source

Patch Changes

• fix: add missing typings for some dimension bindings (#​16142)

• fix: prune typescript class field declarations (#​16154)

v5.34.1

Compare Source

Patch Changes

• fix: correctly tag private class state fields (#​16132)

v5.34.0

Compare Source

Minor Changes

• feat: add source name logging to $inspect.trace (#​16060)

Patch Changes

• fix: add command and commandfor to HTMLButtonAttributes (#​16117)

• fix: better $inspect.trace() output (#​16131)

• fix: properly hydrate dynamic css props components and remove element removal (#​16118)

v5.33.19

Compare Source

Patch Changes

• fix: reset is_flushing if flushSync is called and there's no scheduled effect (#​16119)

v5.33.18

Compare Source

Patch Changes

• chore: bump esrap dependency (#​16106)

• fix: destructuring state in ssr (#​16102)

v5.33.17

Compare Source

Patch Changes

• chore: update acorn parser ecmaVersion to parse import attributes (#​16098)

v5.33.16

Compare Source

Patch Changes

• fix: visit expression when destructuring state declarations (#​16081)

• fix: move xmlns attribute from SVGAttributes to to DOMAttributes (#​16080)

v5.33.15

Compare Source

Patch Changes

• fix: invoke parent boundary of deriveds that throw (#​16091)

v5.33.14

Compare Source

Patch Changes

• Revert "feat: enable TS autocomplete for Svelte HTML element definitions" (#​16063)

• fix: destructuring snippet arguments (#​16068)

v5.33.13

Compare Source

Patch Changes

• fix: avoid recursion error in EachBlock visitor (#​16058)

v5.33.12

Compare Source

Patch Changes

• fix: correctly transform reassignments to class fields in SSR mode (#​16051)

v5.33.11

Compare Source

Patch Changes

• fix: treat transitive dependencies of each blocks as mutable in legacy mode if item is mutated (#​16038)

v5.33.10

Compare Source

Patch Changes

• fix: use fill: 'forwards' on transition animations to prevent flicker (#​16035)

v5.33.9

Compare Source

Patch Changes

• fix: put expressions in effects unless known to be static (#​15792)

v5.33.8

Compare Source

Patch Changes

• fix: only select_option if 'value' is in next (#​16032)

v5.33.7

Compare Source

Patch Changes

• fix: bind:value to select with stores (#​16028)

v5.33.6

Compare Source

Patch Changes

• fix: falsy attachments on components (#​16021)

• fix: correctly mark elements as selected during SSR (#​16017)

v5.33.5

Compare Source

Patch Changes

• fix: handle derived destructured iterators (#​16015)

• fix: avoid rerunning attachments when unrelated spread attributes change (#​15961)

v5.33.4

Compare Source

Patch Changes

• fix: narrow defaultChecked to boolean (#​16009)

• fix: warn when using rest or identifier in custom elements without props option (#​16003)

v5.33.3

Compare Source

Patch Changes

• fix: allow using typescript in customElement.extend option (#​16001)

• fix: cleanup event handlers on media elements (#​16005)

v5.33.2

Compare Source

Patch Changes

• fix: correctly parse escaped unicode characters in css selector (#​15976)

• fix: don't mark deriveds as clean if updating during teardown (#​15997)

v5.33.1

Compare Source

Patch Changes

• fix: reset is_flushing if flushSync is called and there's no scheduled effect (#​16119)

v5.33.0

Compare Source

Minor Changes

• feat: XHTML compliance (#​15538)

• feat: add fragments: 'html' | 'tree' option for wider CSP compliance (#​15538)

v5.32.2

Compare Source

Patch Changes

• chore: simplify <pre> cleaning (#​15980)

• fix: attach __svelte_meta correctly to elements following a CSS wrapper (#​15982)

• fix: import untrack directly from client in svelte/attachments (#​15974)

v5.32.1

Compare Source

Patch Changes

• Warn when an invalid <select multiple> value is given (#​14816)

v5.32.0

Compare Source

Minor Changes

• feat: warn on implicitly closed tags (#​15932)

• feat: attachments fromAction utility (#​15933)

Patch Changes

• fix: only re-run directly applied attachment if it changed (#​15962)

v5.31.1

Compare Source

Patch Changes

• fix: avoid auto-parenthesis for special-keywords-only MediaQuery (#​15937)

v5.31.0

Compare Source

Minor Changes

• feat: allow state fields to be declared inside class constructors (#​15820)

Patch Changes

• fix: Add missing AttachTag in Tag union type inside the AST namespace from "svelte/compiler" (#​15946)

v5.30.2

Compare Source

Patch Changes

• fix: falsy attachments types (#​15939)

• fix: handle more hydration mismatches (#​15851)

v5.30.1

Compare Source

Patch Changes

• fix: add typeParams to SnippetBlock for legacy parser (#​15921)

v5.30.0

Compare Source

Minor Changes

• feat: allow generics on snippets (#​15915)

v5.29.0

Compare Source

Minor Changes

• feat: attachments (#​15000)

v5.28.7

Compare Source

Patch Changes

• fix: remove unncessary guards that require CSP privilege when removing event attributes (#​15846)

• fix: rewrite destructuring logic to handle iterators (#​15813)

v5.28.6

Compare Source

Patch Changes

• fix: use transform.read for ownership_validator.mutation array (#​15848)

• fix: don't redeclare $slots (#​15849)

v5.28.5

Compare Source

Patch Changes

• fix: proxify the value in assignment shorthands to the private field (#​15862)

• fix: more frequently update bind:buffered to actual value (#​15874)

v5.28.4

Compare Source

Patch Changes

• fix: treat nullish expression as empty string (#​15901)

• fix: prevent invalid BigInt calls from blowing up at compile time (#​15900)

• fix: warn on bidirectional control characters (#​15893)

• fix: emit right error for a shadowed invalid rune (#​15892)

v5.28.3

Compare Source

Patch Changes

• chore: avoid microtasks when flushing sync (#​15895)

• fix: improve error message for migration errors when slot would be renamed (#​15841)

• fix: allow characters in the supplementary special-purpose plane (#​15823)

v5.28.2

Compare Source

Patch Changes

• fix: don't mark selector lists inside :global with multiple items as unused (#​15817)

v5.28.1

Compare Source

Patch Changes

• fix: ensure <svelte:boundary> properly removes error content in production mode (#​15793)

• fix: update_version after delete if source is undefined and prop in target (#​15796)

• fix: emit error on wrong placement of the :global block selector (#​15794)

v5.28.0

Compare Source

Minor Changes

• feat: partially evaluate more expressions (#​15781)

v5.27.3

Compare Source

Patch Changes

• fix: use function declaration for snippets in server output to avoid TDZ violation (#​15789)

v5.27.2

Compare Source

Patch Changes

• chore: use pkg.imports for common modules (#​15787)

v5.27.1

Compare Source

Patch Changes

• chore: default params for html blocks (#​15778)

• fix: correct suggested type for custom events without detail (#​15763)

• fix: Throw on unrendered snippets in dev (#​15766)

• fix: avoid unnecessary read version increments (#​15777)

v5.27.0

Compare Source

Minor Changes

• feat: partially evaluate certain expressions (#​15494)

Patch Changes

• fix: relax :global selector list validation (#​15762)

v5.26.3

Compare Source

Patch Changes

• fix: correctly validate head snippets on the server (#​15755)

• fix: ignore mutation validation for props that are not proxies in more cases (#​15759)

• fix: allow self-closing tags within math namespace (#​15761)

v5.26.2

Compare Source

Patch Changes

• fix: correctly validate undefined snippet params with default value (#​15750)

v5.26.1

Compare Source

Patch Changes

• fix: update state_referenced_locally message (#​15733)

v5.26.0

Compare Source

Minor Changes

• feat: add css.hasGlobal to compile output (#​15450)

Patch Changes

• fix: add snippet argument validation in dev (#​15521)

v5.25.12

Compare Source

Patch Changes

• fix: improve internal_set versioning mechanic (#​15724)

• fix: don't transform reassigned state in labeled statement in $derived (#​15725)

v5.25.11

Compare Source

Patch Changes

• fix: handle hydration mismatches in await blocks (#​15708)

• fix: prevent ownership warnings if the fallback of a bindable is used (#​15720)

v5.25.10

Compare Source

Patch Changes

• fix: set deriveds as CLEAN if they are assigned to (#​15592)

• fix: better scope :global() with nesting selector & (#​15671)

v5.25.9

Compare Source

Patch Changes

• fix: allow $.state and $.derived to be treeshaken (#​15702)

• fix: rework binding ownership validation (#​15678)

v5.25.8

Compare Source

Patch Changes

• fix: address untracked_writes memory leak (#​15694)

v5.25.7

Compare Source

Patch Changes

• fix: ensure clearing of old values happens independent of root flushes (#​15664)

v5.25.6

Compare Source

Patch Changes

• fix: ignore generic type arguments while creating AST (#​15659)

• fix: better consider component and its snippets during css pruning (#​15630)

v5.25.5

Compare Source

Patch Changes

• fix: add setters to $derived class properties (#​15628)

• fix: silence assignment warning on more function bindings (#​15644)

• fix: make sure CSS is preserved during SSR with bindings (#​15645)

v5.25.4

Compare Source

Patch Changes

• fix: support TS type assertions (#​15642)

• fix: ensure undefined class still applies scoping class, if necessary ([#​15643](https://redirect.github.com/sveltejs/sve

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.