Update dependency svelte to v5.57.0

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
svelte (source)	5.53.6 → 5.57.0

---

Release Notes

sveltejs/svelte (svelte)

v5.57.0

Compare Source

Minor Changes

• feat: export RenderOutput, SyncRenderOutput, Csp and Sha256Source from svelte/server (#​18648)

• feat: add has function to createContext (#​18472)

• feat: support defaultValue on <select> (#​18591)

• feat: add getOrInsert/getOrInsertComputed to SvelteMap (#​18728)

Patch Changes

• fix: block template store subscriptions on the promise that assigns the store (#​18582)

• fix: route $derived teardown errors through invoke_error_boundary (#​18486)

• fix: track SvelteDate snapshots in reactions (#​18700)

• fix: remove <svelte:head> anchors on unmount (#​18697)

• fix: warn on undeclared shorthand event handlers on <svelte:window>, <svelte:document> and <svelte:body> (#​18480)

• perf: reuse the cached value in the <option>/<select> value guard (#​18713)

• fix: prevent malformed AST output for <select> with static value attribute (#​18449)

• fix: apply ownership mutation ignores to binding assignments (#​18718)

• fix: prevent onoutroend from firing twice when compilerOptions.hmr is true (#​18655)

• fix: preserve whitespace after inline elements when printing (#​18685)

• perf: fold SSR block-open markers into the branch's first push (#​18712)

• fix: run onDestroy callbacks when a server render throws (#​18585)

• fix: report derived_invalid_export for export let x = $derived(...) in runes mode (#​18692)

• fix: never apply class hash to elements inside <svelte:head> (#​18160)

• fix: keep defaultChecked on hydrated radio inputs with spread attributes (#​18701)

• fix: accept onfocusin/onfocusout in a11y_mouse_events_have_key_events (#​18689)

• perf: O(n²)→O(n) Map lookups for legacy $: reactive statement ordering (#​18602)

• fix: distinct memoizer on style/class directives (#​18466)

• fix: measure nested transitions before applying their starting styles (#​18647)

• fix: don't turn component instances stored in $state into state proxies (#​18646)

• perf: emit $.only_child for elements with a single child (#​18717)

• fix: omit bind:focused from SSR output (it has no HTML attribute) (#​18724)

• fix: more robust rendering of Svelte custom element slots (#​18710)

• perf: optimize simple object destructuring in @const tags (#​18390)

• fix: properly apply static textarea value attribute during CSR (#​18727)

• fix: end a restored reaction context at the end of its synchronous segment (#​18694)

• fix: keep the dependencies of a reaction that throws, so deriveds it read are neither leaked nor stuck in their error (#​18703)

• fix: don't resurrect outroing elements when an ancestor block is paused and resumed (#​18431)

• perf: use $.comment() for single-comment templates (#​18714)

• chore: move @types/trusted-types to devDependencies (#​18730)

• perf: store setters cache as Set instead of Array (#​18251)

• fix: transform derived assignments and select function bindings correctly during server-side rendering (#​18669)

• fix: keep boolean attributes with an empty string value when rendering attribute objects on the server (#​18721)

• fix: sync SvelteURL port signal when the protocol setter clears the port (#​18705)

• fix: block declaration tags and {@const} on async values read inside closures (#​18533)

• fix: avoid css tree-shaking for exported Snippet (#​18540)

• perf: treat <img loading> as a static element again (#​18711)

• fix: prevent selectedcontent mutation from changing the selected option (#​18495)

• fix: avoid NaN keyframe values in slide transition for elements without a layout box (#​18430)

• fix: preserve line feed character references in attribute values (#​18691)

• fix: decode uppercase-X hex numeric character references (&#X...;) (#​18708)

• chore: clarify when $effect.pre runs relative to DOM updates (#​18534)

• fix: scope SSR boundary failed snippets to their boundary (#​18593)

v5.56.10

Compare Source

Patch Changes

• fix: preserve CSS escape sequences when printing selectors (#​18667)

• fix: parse :nth-child(2n of.foo) where of is not followed by whitespace (#​18611)

• fix: transform expressions inside labeled statements during server compilation (#​18617)

• docs: clarify that context lookup includes the current component and all ancestors (#​18581)

• fix: apply CSS custom properties with falsy values on components (#​18634)

• fix: correctly print {#await ... catch x} et al (#​18645)

• fix: ignore comments of Program node during migration script (#​18656)

• fix: reliably resolve append_style to its correct root (#​18614)

• fix: clean up removed capture event handlers from spread attributes (#​18618)

• fix: don't corrupt renderer type during SSR's legacy bind: retry loop (#​18616)

• fix: treat concise arrow function bodies as implicit returns when calculating blockers (#​18613)

• fix: give effect teardowns the value from before the first write in a flush (#​18620)

• fix: avoid double-calling a derived reference when destructuring $derived of another $derived during server-side rendering (#​18668)

• fix: preserve namespaces in CSS type selectors (#​18678)

• fix: increment private state fields through a non-this receiver (#​18622)

• chore: deduplicate client and server context helpers (#​18580)

• fix: release last_propagated_event after event propagation settles so it no longer retains the last event's target subtree (#​18569)

• fix: allow custom elements to receive async values as props (#​18661)

• fix: strip comments from inline style values in linear time (#​18553)

• fix: prevent declaration comments from breaking server derived references (#​18641)

• perf: make async blocker analysis scale linearly with the number of top-level references (#​18549)

• fix: preserve short-circuiting for logical assignments to private state fields (#​18594)

v5.56.9

Compare Source

Patch Changes

• fix: skip controlled each fast path while another batch is pending (#​18625)

• fix: better whitespace handling inside printer (#​18638)

• fix: don't duplicate comments in attributes (#​18636)

• fix: preserve CSS comments in the AST printer (#​18637)

v5.56.8

Compare Source

Patch Changes

• fix: call onerror and provide a working reset when hydrating a failed boundary (#​18556)

• fix: preserve select selection when spread attributes omit value (#​18561)

v5.56.7

Compare Source

Patch Changes

• chore: provide indent option for print (#​18474)

v5.56.6

Compare Source

Patch Changes

• perf: skip unnecessary blocker analysis when compiling components without top-level await (#​18548)

• fix: rerun derived that had an abort controller on reconnection (#​18551)

v5.56.5

Compare Source

Patch Changes

• chore: drop dead code that make TSGO fail (#​18496)

• fix: don't (re)connect deriveds when read inside branch/root effects (#​18527)

• fix: skip unnecessary derived effect in earlier batch (#​18525)

• fix: avoid declaration tag warning in event handlers (#​18500)

• fix: abort deriveds own AbortSignal when it disconnects (#​18400)

• fix: ensure $state.eager() is correctly transormed for SSR output (#​18530)

• fix: correctly transform declaration tags during SSR (#​18492)

• fix: transform computed keys in keyed {#each} destructuring patterns (#​18521)

• fix: chain preprocessor sourcemaps with an empty sources[0] instead of dropping them (#​18518)

• fix: clear previous_task reference after abort in Tween to prevent memory leak on interrupted tweens (#​18541)

• fix: don't treat declaration tags as parts inside each blocks (#​18507)

v5.56.4

Compare Source

Patch Changes

• fix: include wrapping parentheses in {@const} declarator end position (#​18436)

• fix: always unset reactivity context after restoring it (#​18453)

• fix: don't notify searchParams subscribers when the URL changes without affecting the search string (#​18425)

• fix: strip ? from optional parameters in <script lang="ts"> so generated JavaScript is valid (#​18448)

v5.56.3

Compare Source

Patch Changes

• fix: ignore errors that occur in destroyed effects (#​18384)

• fix: type BigInts in $state.snapshot(...) return values (#​18388)

v5.56.2

Compare Source

Patch Changes

• fix: properly track effect end node for async sibling component (#​18371)

• fix: prevent false-positive reactivity loss warning (#​18373)

• chore: bump esrap dependency (#​18372)

• fix: ignore declaration tags for animation directive (#​18366)

• fix: reject pending async deriveds on discard (#​18308)

v5.56.1

Compare Source

Patch Changes

• fix: error at compile time on duplicate snippet/declaration tag definitions (#​18351)

• fix: parse declaration tag contents more robustly (#​18353)

• fix: correctly transform references to earlier declarators in a declaration tag (e.g. {let a = $state(0), b = $derived(a * 2)}) (#​18348)

• fix: avoid spurious state_referenced_locally warnings for $derived declarations in declaration tags (#​18348)

• fix: tolerate whitespace before let/const in declaration tags (#​18348)

• fix: prevent infinite loop when a tag's expression ends with a trailing / at the end of the input (#​18350)

• fix: more robust parsing of declaration tags with regards to type (#​18330)

• fix: preserve newlines in spread input values when the type attribute is applied after value (#​18345)

• fix: update SvelteURLSearchParams when setting duplicate keys to the same joined value (#​18336)

• fix: check references for blockers on server, too (#​18352)

v5.56.0

Compare Source

Minor Changes

• feat: allow declarations in the template (#​18282)

Patch Changes

• perf: use createElement instead of createElementNS for HTML elements (#​18262)

• perf: store current_sources as a Set for O(1) membership checks (#​18278)

• perf: deduplicate identical hoisted templates within a component (#​18320)

• perf: hoist rest_props exclude list as a module-scope Set (#​18252)

v5.55.10

Compare Source

Patch Changes

• fix: unlink errored and otherwise finished batch (#​18264)

• perf: walk composedPath() directly in delegated event propagation (#​18268)

• fix: transfer effects when merging batches (#​18254)

• fix: allow $derived(await ...) in disconnected effect roots (#​18273)

• fix: remove temporary raw-text hydration markers (#​18269)

• fix: propagate async @const blockers through closure references so template expressions like {(() => host)()} correctly wait for the awaited value (#​18309)

• fix: properly unlink batches (#​18298)

• fix: settle discarded batch (#​18290)

• fix: declare let: directives before {@const} declarations on slotted elements (#​18271)

• fix: resume outro-ed branches if they were kept around (#​18291)

• fix: avoid waterfall-warning when async resolves to same value (#​18297)

• fix: correctly coordinate component-level effects inside async blocks (#​18260)

• fix: make unnecessary commit work less likely (#​18263)

• chore: add tag name to a11y_click_events_have_key_events warning (#​18272)

• fix: catch rejected promises while merging/committing (#​18266)

v5.55.9

Compare Source

Patch Changes

• fix: don't unset batch when calling {#await ...} promise (#​18243)

• fix: promise-ify {#await await ...} expressions on the server and correctly hydrate them on the client (#​18243)

• fix: deduplicate dependencies that are added outside the init/update cycle (#​18243)

• fix: avoid false-positive batch invariant error (#​18246)

• fix: inline primitive constants in attribute values during SSR (#​18232)

v5.55.8

Compare Source

Patch Changes

• fix(print): handle svelte:body and fix keyframe percentage double-printing (#​18234)

• fix: execute uninitialized derived even if it's destroyed (#​18228)

• fix: use named symbols everywhere (#​18238)

• fix: don't run teardown effects when deriveds are unfreezed (#​18227)

• fix: unset context synchronously in run (#​18236)

v5.55.7

Compare Source

Patch Changes

• fix: prevent XSS on hydratable from user contents (a16ebc67bbcf8f708360195687e1b2719463e1a4)

• chore: bump devalue (#​18219)

• fix: disallow empty attribute names during SSR (547853e2406a2147ad7fb5ffeba95b01bd9642da)

• fix: harden regex (d2375e2ebcab5c88feb5652f1a9d621b8f06b259)

• fix: move Svelte runtime properties to symbols (e1cbbd96441e82c9eb8a23a2903c0d06d3cda991)

v5.55.6

Compare Source

Patch Changes

• fix: leave stale promises to wait for a later resolution, instead of rejecting (#​18180)

• fix: keep dependencies of $state.eager/pending (#​18218)

• fix: reapply context after transforming error during SSR (#​18099)

• fix: don't rebase just-created batches (#​18117)

• chore: allow null for pending in typings (#​18201)

• fix: flush eager effects in production (#​18107)

• fix: rethrow error of failed iterable after calling return() (#​18169)

• fix: account for proxified instance when updating bind:this (#​18147)

• fix: ensure scheduled batch is flushed if not obsolete (#​18131)

• fix: resolve stale deriveds with latest value (#​18167)

• chore: remove unnecessary increment_pending calls (#​18183)

• fix: correctly compile component member expressions for SSR (#​18192)

• fix: reset source.updated stack traces after flush (#​18196)

• fix: replacing async 'blocking' strategy with 'merging' (#​18205)

• fix: allow @debug tags to reference awaited variables (#​18138)

• fix: re-run fallback props if dependencies update (#​18146)

• fix: abort running obsolete async branches (#​18118)

• fix: ignore comments when reading CSS values (#​18153)

• fix: wrap Promise.all in save during SSR (#​18178)

• fix: ignore false-positive errors of $inspect dependencies (#​18106)

v5.55.5

Compare Source

Patch Changes

• fix: don't mark deriveds while an effect is updating (#​18124)

• fix: do not dispatch introstart event with animation of animate directive (#​18122)

v5.55.4

Compare Source

Patch Changes

• fix: never mark a child effect root as inert (#​18111)

• fix: reset context after waiting on blockers of @const expressions (#​18100)

• fix: keep flushing new eager effects (#​18102)

v5.55.3

Compare Source

Patch Changes

• fix: ensure proper HMR updates for dynamic components (#​18079)

• fix: correctly calculate @const blockers (#​18039)

• fix: freeze deriveds once their containing effects are destroyed (#​17921)

• fix: defer error boundary rendering in forks (#​18076)

• fix: avoid false positives for reactivity loss warning (#​18088)

v5.55.2

Compare Source

Patch Changes

• fix: invalidate @const tags based on visible references in legacy mode (#​18041)

• fix: handle parens in template expressions more robustly (#​18075)

• fix: disallow -- in idPrefix (#​18038)

• fix: correct types for ontoggle on <details> elements (#​18063)

• fix: don't override $destroy/set/on instance methods in dev mode (#​18034)

• fix: unskip branches of earlier batches after commit (#​18048)

• fix: never set derived.v inside fork (#​18037)

• fix: skip rebase logic in non-async mode (#​18040)

• fix: don't reset status of uninitialized deriveds (#​18054)

v5.55.1

Compare Source

Patch Changes

• fix: correctly handle bindings on the server (#​18009)

• fix: prevent hydration error on async {@html ...} (#​17999)

• fix: cleanup superTypeParameters in ClassDeclarations/ClassExpression (#​18015)

• fix: improve duplicate module import error message (#​18016)

• fix: reschedule new effects in prior batches (#​18021)

v5.55.0

Compare Source

Minor Changes

• feat: export TweenOptions, SpringOptions, SpringUpdateOptions and Updater from svelte/motion (#​17967)

Patch Changes

• fix: ensure HMR wrapper forwards correct start/end nodes to active effect (#​17985)

v5.54.1

Compare Source

Patch Changes

• fix: hydration comments during hmr (#​17975)

• fix: null out effect.b in destroy_effect (#​17980)

• fix: group sync statements (#​17977)

• fix: defer batch resolution until earlier intersecting batches have committed (#​17162)

• fix: properly invoke iterator.return() during reactivity loss check (#​17966)

• fix: remove trailing semicolon from {@​const} tag printer (#​17962)

v5.54.0

Compare Source

Minor Changes

• feat: allow css, runes, customElement compiler options to be functions (#​17951)

Patch Changes

• fix: reinstate reactivity loss tracking (#​17801)

v5.53.13

Compare Source

Patch Changes

• fix: ensure $inspect after top level await doesn't break builds (#​17943)

• fix: resume inert effects when they come from offscreen (#​17942)

• fix: don't eagerly access not-yet-initialized functions in template (#​17938)

• fix: discard batches made obsolete by commit (#​17934)

• fix: ensure "is standalone child" is correctly reset (#​17944)

• fix: remove nodes in boundary when work is pending and HMR is active (#​17932)

v5.53.12

Compare Source

Patch Changes

• fix: update select.__value on change (#​17745)

• chore: add invariant helper for debugging (#​17929)

• fix: ensure deriveds values are correct across batches (#​17917)

• fix: handle async RHS in assignment_value_stale (#​17925)

• fix: avoid traversing clean roots (#​17928)

v5.53.11

Compare Source

Patch Changes

• fix: remove untrack circular dependency (#​17910)

• fix: recover from errors that leave a corrupted effect tree (#​17888)

• fix: properly lazily evaluate RHS when checking for assignment_value_stale (#​17906)

• fix: resolve boundary in correct batch when hydrating (#​17914)

• chore: rebase batches after process, not during (#​17900)

v5.53.10

Compare Source

Patch Changes

• fix: re-process batch if new root effects were scheduled (#​17895)

v5.53.9

Compare Source

Patch Changes

• fix: better bind:this cleanup timing (#​17885)

v5.53.8

Compare Source

Patch Changes

• fix: {@html} no longer duplicates content inside contenteditable elements (#​17853)

• fix: don't access inert block effects (#​17882)

• fix: handle asnyc updates within pending boundary (#​17873)

• perf: avoid re-traversing the effect tree after $: assignments (#​17848)

• chore: simplify scheduling logic (#​17805)

v5.53.7

Compare Source

Patch Changes

• fix: correctly add __svelte_meta after else-if chains (#​17830)

• perf: cache element interactivity and source line splitting in compiler (#​17839)

• chore: avoid rescheduling effects during branch commit (#​17837)

• perf: optimize CSS selector pruning (#​17846)

• fix: preserve original boundary errors when keyed each rows are removed during async updates (#​17843)

• perf: avoid O(n²) name scanning in scope generate and unique (#​17844)

• fix: preserve each items that are needed by pending batches (#​17819)

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