---
name: svelte
slug: svelte-releases
type: github
source_url: https://github.com/sveltejs/svelte
organization: Svelte
organization_slug: svelte
total_releases: 119
latest_version: svelte@5.57.2
latest_date: 2026-10-06
last_updated: 2026-10-08
tracking_since: 2025-09-19
canonical: https://releases.sh/svelte/svelte-releases
organization_url: https://releases.sh/svelte
---

<Release version="svelte@5.57.2" date="October 6, 2026" published="2026-10-06T14:20:22.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.57.2">
### Patch Changes

-   fix: don't create async deriveds for a component destroyed while waiting for its top-level `await` ([#18931](https://github.com/sveltejs/svelte/pull/18931))

-   fix: prevent untracked derived reads from retaining disconnected dependencies ([#18829](https://github.com/sveltejs/svelte/pull/18829))

-   fix: error if `{:else}` is followed by another `{:else}` or `{:else if ...}` ([#18900](https://github.com/sveltejs/svelte/pull/18900))

-   fix: avoid tracking SvelteURLSearchParams during URL updates ([#18791](https://github.com/sveltejs/svelte/pull/18791))

-   fix: restore hydration state when custom element attribute updates throw ([#18467](https://github.com/sveltejs/svelte/pull/18467))

-   fix: attach event handlers that are assigned after a top-level `await` in production ([#18933](https://github.com/sveltejs/svelte/pull/18933))

-   fix: flush anything pending before invoking flushSync callback function ([#18878](https://github.com/sveltejs/svelte/pull/18878))

-   fix: preserve location information for `await` wrappers ([#18859](https://github.com/sveltejs/svelte/pull/18859))

-   fix: keep a reactive assignment with no dependencies when `migrate` cannot turn it into a declaration ([#18817](https://github.com/sveltejs/svelte/pull/18817))

-   fix: don't hang `migrate` on a declaration that shares a line with its script tag ([#18816](https://github.com/sveltejs/svelte/pull/18816))

-   fix: prevent duplicate subscriptions when reconnecting deriveds ([#18899](https://github.com/sveltejs/svelte/pull/18899))

-   fix: recover when an unexpected node replaces a nested boundary comment during hydration ([#18925](https://github.com/sveltejs/svelte/pull/18925))

-   fix: print `{#await}` blocks that only have a pending branch ([#18908](https://github.com/sveltejs/svelte/pull/18908))

-   fix: don't warn about a redundant `link` role on `<area>` elements without an `href` ([#18872](https://github.com/sveltejs/svelte/pull/18872))

-   fix: don't throw `state_unsafe_mutation` when the focused element is removed while `bind:activeElement` is used ([#18921](https://github.com/sveltejs/svelte/pull/18921))

-   fix: don't overwrite an unchanged spread `value`, preserving incomplete number input ([#18864](https://github.com/sveltejs/svelte/pull/18864))

-   fix: read batch-local array on each-block commit ([#18879](https://github.com/sveltejs/svelte/pull/18879))

-   fix: error at compile time when a declaration in a snippet redeclares one of its parameters ([#18842](https://github.com/sveltejs/svelte/pull/18842))

-   fix: error when using `let:` directives on a component with a `children` snippet ([#18873](https://github.com/sveltejs/svelte/pull/18873))

-   fix: ignore stale boundary reset callbacks ([#18886](https://github.com/sveltejs/svelte/pull/18886))

-   fix: handle deferred transitions aborted before initialization ([#18776](https://github.com/sveltejs/svelte/pull/18776))

-   fix: prevent hydration mismatch recovery from being intercepted by error boundaries ([#18841](https://github.com/sveltejs/svelte/pull/18841))

-   fix: preserve dynamic element connections during hydration ([#18855](https://github.com/sveltejs/svelte/pull/18855))

</Release>

<Release version="svelte@5.57.1" date="September 18, 2026" published="2026-09-18T23:51:13.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.57.1">
### Patch Changes

-   fix: cancel deferred event listeners during cleanup ([#18749](https://github.com/sveltejs/svelte/pull/18749))

-   fix: preserve global CSS in components without scopable elements ([#18793](https://github.com/sveltejs/svelte/pull/18793))

-   fix: reduce SSR render result garbage collection ([#18798](https://github.com/sveltejs/svelte/pull/18798))

-   fix: resolve the fallback of an each block in the enclosing scope ([#18803](https://github.com/sveltejs/svelte/pull/18803))

-   perf: speed up parser interactions with Acorn or avoid them where possible ([#18740](https://github.com/sveltejs/svelte/pull/18740))

-   fix: prevent effect tree of batches from interfering with each other ([#18508](https://github.com/sveltejs/svelte/pull/18508))

-   fix: serialize input default values during server rendering ([#18733](https://github.com/sveltejs/svelte/pull/18733))

-   fix: remove `WAS_MARKED` flag in favor of `Set` ([#18127](https://github.com/sveltejs/svelte/pull/18127))

-   fix: throw `set_context_after_init` when `setContext` is called after an `await` during SSR ([#18739](https://github.com/sveltejs/svelte/pull/18739))

-   fix: make Object.hasOwn reactive for state proxy ownership changes ([#18838](https://github.com/sveltejs/svelte/pull/18838))

-   fix: keep `$state.eager` when used as a variable initializer ([#18809](https://github.com/sveltejs/svelte/pull/18809))

-   perf: avoid regex matching in parser where possible ([#18736](https://github.com/sveltejs/svelte/pull/18736))

-   fix: in non-async mode, only push variable to current_sources when active_reaction is updating ([#18550](https://github.com/sveltejs/svelte/pull/18550))

-   fix: recognise `aria-braillelabel` and `aria-brailleroledescription` as known ARIA attributes ([#18765](https://github.com/sveltejs/svelte/pull/18765))

</Release>

<Release version="svelte@5.57.0" date="August 28, 2026" published="2026-08-28T23:31:40.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.57.0">
### Minor Changes

-   feat: export `RenderOutput`, `SyncRenderOutput`, `Csp` and `Sha256Source` from `svelte/server` ([#18648](https://github.com/sveltejs/svelte/pull/18648))

-   feat: add `has` function to `createContext` ([#18472](https://github.com/sveltejs/svelte/pull/18472))

-   feat: support `defaultValue` on `<select>` ([#18591](https://github.com/sveltejs/svelte/pull/18591))

-   feat: add getOrInsert/getOrInsertComputed to SvelteMap ([#18728](https://github.com/sveltejs/svelte/pull/18728))

### Patch Changes

-   fix: block template store subscriptions on the promise that assigns the store ([#18582](https://github.com/sveltejs/svelte/pull/18582))

-   fix: route $derived teardown errors through invoke_error_boundary ([#18486](https://github.com/sveltejs/svelte/pull/18486))

-   fix: track SvelteDate snapshots in reactions ([#18700](https://github.com/sveltejs/svelte/pull/18700))

-   fix: remove `<svelte:head>` anchors on unmount ([#18697](https://github.com/sveltejs/svelte/pull/18697))

-   fix: warn on undeclared shorthand event handlers on `<svelte:window>`, `<svelte:document>` and `<svelte:body>` ([#18480](https://github.com/sveltejs/svelte/pull/18480))

-   perf: reuse the cached value in the `<option>`/`<select>` value guard ([#18713](https://github.com/sveltejs/svelte/pull/18713))

-   fix: prevent malformed AST output for `<select>` with static `value` attribute ([#18449](https://github.com/sveltejs/svelte/pull/18449))

-   fix: apply ownership mutation ignores to binding assignments ([#18718](https://github.com/sveltejs/svelte/pull/18718))

-   fix: prevent onoutroend from firing twice when compilerOptions.hmr is true ([#18655](https://github.com/sveltejs/svelte/pull/18655))

-   fix: preserve whitespace after inline elements when printing ([#18685](https://github.com/sveltejs/svelte/pull/18685))

-   perf: fold SSR block-open markers into the branch's first push ([#18712](https://github.com/sveltejs/svelte/pull/18712))

-   fix: run `onDestroy` callbacks when a server render throws ([#18585](https://github.com/sveltejs/svelte/pull/18585))

-   fix: report `derived_invalid_export` for `export let x = $derived(...)` in runes mode ([#18692](https://github.com/sveltejs/svelte/pull/18692))

-   fix: never apply class hash to elements inside `<svelte:head>` ([#18160](https://github.com/sveltejs/svelte/pull/18160))

-   fix: keep `defaultChecked` on hydrated radio inputs with spread attributes ([#18701](https://github.com/sveltejs/svelte/pull/18701))

-   fix: accept `onfocusin`/`onfocusout` in `a11y_mouse_events_have_key_events` ([#18689](https://github.com/sveltejs/svelte/pull/18689))

-   perf: O(n²)→O(n) Map lookups for legacy `$:` reactive statement ordering ([#18602](https://github.com/sveltejs/svelte/pull/18602))

-   fix: distinct memoizer on style/class directives ([#18466](https://github.com/sveltejs/svelte/pull/18466))

-   fix: measure nested transitions before applying their starting styles ([#18647](https://github.com/sveltejs/svelte/pull/18647))

-   fix: don't turn component instances stored in `$state` into state proxies ([#18646](https://github.com/sveltejs/svelte/pull/18646))

-   perf: emit `$.only_child` for elements with a single child ([#18717](https://github.com/sveltejs/svelte/pull/18717))

-   fix: omit `bind:focused` from SSR output (it has no HTML attribute) ([#18724](https://github.com/sveltejs/svelte/pull/18724))

-   fix: more robust rendering of Svelte custom element slots ([#18710](https://github.com/sveltejs/svelte/pull/18710))

-   perf: optimize simple object destructuring in `@const` tags ([#18390](https://github.com/sveltejs/svelte/pull/18390))

-   fix: properly apply static textarea value attribute during CSR ([#18727](https://github.com/sveltejs/svelte/pull/18727))

-   fix: end a restored reaction context at the end of its synchronous segment ([#18694](https://github.com/sveltejs/svelte/pull/18694))

-   fix: keep the dependencies of a reaction that throws, so deriveds it read are neither leaked nor stuck in their error ([#18703](https://github.com/sveltejs/svelte/pull/18703))

-   fix: don't resurrect outroing elements when an ancestor block is paused and resumed ([#18431](https://github.com/sveltejs/svelte/pull/18431))

-   perf: use `$.comment()` for single-comment templates ([#18714](https://github.com/sveltejs/svelte/pull/18714))

-   chore: move `@types/trusted-types` to devDependencies ([#18730](https://github.com/sveltejs/svelte/pull/18730))

-   perf: store setters cache as `Set` instead of `Array` ([#18251](https://github.com/sveltejs/svelte/pull/18251))

-   fix: transform derived assignments and select function bindings correctly during server-side rendering ([#18669](https://github.com/sveltejs/svelte/pull/18669))

-   fix: keep boolean attributes with an empty string value when rendering attribute objects on the server ([#18721](https://github.com/sveltejs/svelte/pull/18721))

-   fix: sync `SvelteURL` port signal when the protocol setter clears the port ([#18705](https://github.com/sveltejs/svelte/pull/18705))

-   fix: block declaration tags and `{@const}` on async values read inside closures ([#18533](https://github.com/sveltejs/svelte/pull/18533))

-   fix: avoid css tree-shaking for exported Snippet ([#18540](https://github.com/sveltejs/svelte/pull/18540))

-   perf: treat `<img loading>` as a static element again ([#18711](https://github.com/sveltejs/svelte/pull/18711))

-   fix: prevent `selectedcontent` mutation from changing the selected option ([#18495](https://github.com/sveltejs/svelte/pull/18495))

-   fix: avoid `NaN` keyframe values in `slide` transition for elements without a layout box ([#18430](https://github.com/sveltejs/svelte/pull/18430))

-   fix: preserve line feed character references in attribute values ([#18691](https://github.com/sveltejs/svelte/pull/18691))

-   fix: decode uppercase-`X` hex numeric character references (`&#X...;`) ([#18708](https://github.com/sveltejs/svelte/pull/18708))

-   chore: clarify when `$effect.pre` runs relative to DOM updates ([#18534](https://github.com/sveltejs/svelte/pull/18534))

-   fix: scope SSR boundary failed snippets to their boundary ([#18593](https://github.com/sveltejs/svelte/pull/18593))

</Release>

<Release version="svelte@5.56.10" date="August 20, 2026" published="2026-08-20T19:20:58.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.10">
### Patch Changes

-   fix: preserve CSS escape sequences when printing selectors ([#18667](https://github.com/sveltejs/svelte/pull/18667))

-   fix: parse `:nth-child(2n of.foo)` where `of` is not followed by whitespace ([#18611](https://github.com/sveltejs/svelte/pull/18611))

-   fix: transform expressions inside labeled statements during server compilation ([#18617](https://github.com/sveltejs/svelte/pull/18617))

-   docs: clarify that context lookup includes the current component and all ancestors ([#18581](https://github.com/sveltejs/svelte/pull/18581))

-   fix: apply CSS custom properties with falsy values on components ([#18634](https://github.com/sveltejs/svelte/pull/18634))

-   fix: correctly print `{#await ... catch x}` et al ([#18645](https://github.com/sveltejs/svelte/pull/18645))

-   fix: ignore comments of Program node during migration script ([#18656](https://github.com/sveltejs/svelte/pull/18656))

-   fix: reliably resolve append_style to its correct root ([#18614](https://github.com/sveltejs/svelte/pull/18614))

-   fix: clean up removed capture event handlers from spread attributes ([#18618](https://github.com/sveltejs/svelte/pull/18618))

-   fix: don't corrupt renderer type during SSR's legacy `bind:` retry loop ([#18616](https://github.com/sveltejs/svelte/pull/18616))

-   fix: treat concise arrow function bodies as implicit returns when calculating blockers ([#18613](https://github.com/sveltejs/svelte/pull/18613))

-   fix: give effect teardowns the value from before the first write in a flush ([#18620](https://github.com/sveltejs/svelte/pull/18620))

-   fix: avoid double-calling a derived reference when destructuring `$derived` of another `$derived` during server-side rendering ([#18668](https://github.com/sveltejs/svelte/pull/18668))

-   fix: preserve namespaces in CSS type selectors ([#18678](https://github.com/sveltejs/svelte/pull/18678))

-   fix: increment private state fields through a non-`this` receiver ([#18622](https://github.com/sveltejs/svelte/pull/18622))

-   chore: deduplicate client and server context helpers ([#18580](https://github.com/sveltejs/svelte/pull/18580))

-   fix: release `last_propagated_event` after event propagation settles so it no longer retains the last event's target subtree ([#18569](https://github.com/sveltejs/svelte/pull/18569))

-   fix: allow custom elements to receive async values as props ([#18661](https://github.com/sveltejs/svelte/pull/18661))

-   fix: strip comments from inline `style` values in linear time ([#18553](https://github.com/sveltejs/svelte/pull/18553))

-   fix: prevent declaration comments from breaking server derived references ([#18641](https://github.com/sveltejs/svelte/pull/18641))

-   perf: make async blocker analysis scale linearly with the number of top-level references ([#18549](https://github.com/sveltejs/svelte/pull/18549))

-   fix: preserve short-circuiting for logical assignments to private state fields ([#18594](https://github.com/sveltejs/svelte/pull/18594))

</Release>

<Release version="svelte@5.56.9" date="August 12, 2026" published="2026-08-12T18:12:41.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.9">
### Patch Changes

-   fix: skip controlled each fast path while another batch is pending ([#18625](https://github.com/sveltejs/svelte/pull/18625))

-   fix: better whitespace handling inside printer ([#18638](https://github.com/sveltejs/svelte/pull/18638))

-   fix: don't duplicate comments in attributes ([#18636](https://github.com/sveltejs/svelte/pull/18636))

-   fix: preserve CSS comments in the AST printer ([#18637](https://github.com/sveltejs/svelte/pull/18637))

</Release>

<Release version="svelte@5.56.8" date="July 24, 2026" published="2026-07-24T22:09:14.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.8">
### Patch Changes

-   fix: call `onerror` and provide a working `reset` when hydrating a failed boundary ([#18556](https://github.com/sveltejs/svelte/pull/18556))

-   fix: preserve select selection when spread attributes omit value ([#18561](https://github.com/sveltejs/svelte/pull/18561))

</Release>

<Release version="svelte@5.56.7" date="July 20, 2026" published="2026-07-20T19:31:02.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.7">
### Patch Changes

-   chore: provide `indent` option for `print` ([#18474](https://github.com/sveltejs/svelte/pull/18474))

</Release>

<Release version="svelte@5.56.6" date="July 16, 2026" published="2026-07-16T22:26:47.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.6">
### Patch Changes

-   perf: skip unnecessary blocker analysis when compiling components without top-level await ([#18548](https://github.com/sveltejs/svelte/pull/18548))

-   fix: rerun derived that had an abort controller on reconnection ([#18551](https://github.com/sveltejs/svelte/pull/18551))

</Release>

<Release version="svelte@5.56.5" date="July 14, 2026" published="2026-07-14T12:03:32.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.5">
### Patch Changes

-   chore: drop dead code that make TSGO fail ([#18496](https://github.com/sveltejs/svelte/pull/18496))

-   fix: don't (re)connect deriveds when read inside branch/root effects ([#18527](https://github.com/sveltejs/svelte/pull/18527))

-   fix: skip unnecessary derived effect in earlier batch ([#18525](https://github.com/sveltejs/svelte/pull/18525))

-   fix: avoid declaration tag warning in event handlers ([#18500](https://github.com/sveltejs/svelte/pull/18500))

-   fix: abort deriveds own AbortSignal when it disconnects ([#18400](https://github.com/sveltejs/svelte/pull/18400))

-   fix: ensure `$state.eager()` is correctly transormed for SSR output ([#18530](https://github.com/sveltejs/svelte/pull/18530))

-   fix: correctly transform declaration tags during SSR ([#18492](https://github.com/sveltejs/svelte/pull/18492))

-   fix: transform computed keys in keyed `{#each}` destructuring patterns ([#18521](https://github.com/sveltejs/svelte/pull/18521))

-   fix: chain preprocessor sourcemaps with an empty `sources[0]` instead of dropping them ([#18518](https://github.com/sveltejs/svelte/pull/18518))

-   fix: clear previous_task reference after abort in Tween to prevent memory leak on interrupted tweens ([#18541](https://github.com/sveltejs/svelte/pull/18541))

-   fix: don't treat declaration tags as parts inside each blocks ([#18507](https://github.com/sveltejs/svelte/pull/18507))

</Release>

<Release version="svelte@5.56.4" date="June 23, 2026" published="2026-06-23T18:48:43.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.4">
### Patch Changes

-   fix: include wrapping parentheses in `{@const}` declarator `end` position ([#18436](https://github.com/sveltejs/svelte/pull/18436))

-   fix: always unset reactivity context after restoring it ([#18453](https://github.com/sveltejs/svelte/pull/18453))

-   fix: don't notify `searchParams` subscribers when the URL changes without affecting the search string ([#18425](https://github.com/sveltejs/svelte/pull/18425))

-   fix: strip `?` from optional parameters in `<script lang="ts">` so generated JavaScript is valid ([#18448](https://github.com/sveltejs/svelte/pull/18448))

</Release>

<Release version="svelte@5.56.3" date="June 7, 2026" published="2026-06-07T18:30:29.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.3">
### Patch Changes

-   fix: ignore errors that occur in destroyed effects ([#18384](https://github.com/sveltejs/svelte/pull/18384))

-   fix: type BigInts in `$state.snapshot(...)` return values ([#18388](https://github.com/sveltejs/svelte/pull/18388))

</Release>

<Release version="svelte@5.56.2" date="June 4, 2026" published="2026-06-04T20:33:04.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.2">
### Patch Changes

-   fix: properly track effect end node for async sibling component ([#18371](https://github.com/sveltejs/svelte/pull/18371))

-   fix: prevent false-positive reactivity loss warning ([#18373](https://github.com/sveltejs/svelte/pull/18373))

-   chore: bump esrap dependency ([#18372](https://github.com/sveltejs/svelte/pull/18372))

-   fix: ignore declaration tags for animation directive ([#18366](https://github.com/sveltejs/svelte/pull/18366))

-   fix: reject pending async deriveds on discard ([#18308](https://github.com/sveltejs/svelte/pull/18308))

</Release>

<Release version="svelte@5.56.1" date="June 1, 2026" published="2026-06-01T22:42:27.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.1">
### Patch Changes

-   fix: error at compile time on duplicate snippet/declaration tag definitions ([#18351](https://github.com/sveltejs/svelte/pull/18351))

-   fix: parse declaration tag contents more robustly ([#18353](https://github.com/sveltejs/svelte/pull/18353))

-   fix: correctly transform references to earlier declarators in a declaration tag (e.g. `{let a = $state(0), b = $derived(a * 2)}`) ([#18348](https://github.com/sveltejs/svelte/pull/18348))

-   fix: avoid spurious `state_referenced_locally` warnings for `$derived` declarations in declaration tags ([#18348](https://github.com/sveltejs/svelte/pull/18348))

-   fix: tolerate whitespace before `let`/`const` in declaration tags ([#18348](https://github.com/sveltejs/svelte/pull/18348))

-   fix: prevent infinite loop when a tag's expression ends with a trailing `/` at the end of the input ([#18350](https://github.com/sveltejs/svelte/pull/18350))

-   fix: more robust parsing of declaration tags with regards to `type` ([#18330](https://github.com/sveltejs/svelte/pull/18330))

-   fix: preserve newlines in spread input values when the `type` attribute is applied after `value` ([#18345](https://github.com/sveltejs/svelte/pull/18345))

-   fix: update `SvelteURLSearchParams` when setting duplicate keys to the same joined value ([#18336](https://github.com/sveltejs/svelte/pull/18336))

-   fix: check references for blockers on server, too ([#18352](https://github.com/sveltejs/svelte/pull/18352))

</Release>

<Release version="svelte@5.56.0" date="May 29, 2026" published="2026-05-29T22:00:29.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.56.0">
### Minor Changes

-   feat: allow declarations in the template ([#18282](https://github.com/sveltejs/svelte/pull/18282))

### Patch Changes

-   perf: use `createElement` instead of `createElementNS` for HTML elements ([#18262](https://github.com/sveltejs/svelte/pull/18262))

-   perf: store `current_sources` as a `Set` for O(1) membership checks ([#18278](https://github.com/sveltejs/svelte/pull/18278))

-   perf: deduplicate identical hoisted templates within a component ([#18320](https://github.com/sveltejs/svelte/pull/18320))

-   perf: hoist `rest_props` exclude list as a module-scope `Set` ([#18252](https://github.com/sveltejs/svelte/pull/18252))

</Release>

<Release version="svelte@5.55.10" date="May 27, 2026" published="2026-05-27T21:48:44.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.10">
### Patch Changes

-   fix: unlink errored and otherwise finished batch ([#18264](https://github.com/sveltejs/svelte/pull/18264))

-   perf: walk composedPath() directly in delegated event propagation ([#18268](https://github.com/sveltejs/svelte/pull/18268))

-   fix: transfer effects when merging batches ([#18254](https://github.com/sveltejs/svelte/pull/18254))

-   fix: allow `$derived(await ...)` in disconnected effect roots ([#18273](https://github.com/sveltejs/svelte/pull/18273))

-   fix: remove temporary raw-text hydration markers ([#18269](https://github.com/sveltejs/svelte/pull/18269))

-   fix: propagate async `@const` blockers through closure references so template expressions like `{(() => host)()}` correctly wait for the awaited value ([#18309](https://github.com/sveltejs/svelte/pull/18309))

-   fix: properly unlink batches ([#18298](https://github.com/sveltejs/svelte/pull/18298))

-   fix: settle discarded batch ([#18290](https://github.com/sveltejs/svelte/pull/18290))

-   fix: declare `let:` directives before `{@const}` declarations on slotted elements ([#18271](https://github.com/sveltejs/svelte/pull/18271))

-   fix: resume outro-ed branches if they were kept around ([#18291](https://github.com/sveltejs/svelte/pull/18291))

-   fix: avoid waterfall-warning when async resolves to same value ([#18297](https://github.com/sveltejs/svelte/pull/18297))

-   fix: correctly coordinate component-level effects inside async blocks ([#18260](https://github.com/sveltejs/svelte/pull/18260))

-   fix: make unnecessary commit work less likely ([#18263](https://github.com/sveltejs/svelte/pull/18263))

-   chore: add tag name to `a11y_click_events_have_key_events` warning ([#18272](https://github.com/sveltejs/svelte/pull/18272))

-   fix: catch rejected promises while merging/committing ([#18266](https://github.com/sveltejs/svelte/pull/18266))

</Release>

<Release version="svelte@5.55.9" date="May 20, 2026" published="2026-05-20T10:08:35.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.9">
### Patch Changes

-   fix: don't unset batch when calling `{#await ...}` promise ([#18243](https://github.com/sveltejs/svelte/pull/18243))

-   fix: promise-ify `{#await await ...}` expressions on the server and correctly hydrate them on the client ([#18243](https://github.com/sveltejs/svelte/pull/18243))

-   fix: deduplicate dependencies that are added outside the init/update cycle ([#18243](https://github.com/sveltejs/svelte/pull/18243))

-   fix: avoid false-positive batch invariant error ([#18246](https://github.com/sveltejs/svelte/pull/18246))

-   fix: inline primitive constants in attribute values during SSR ([#18232](https://github.com/sveltejs/svelte/pull/18232))

</Release>

<Release version="svelte@5.55.8" date="May 18, 2026" published="2026-05-18T16:45:32.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.8">
### Patch Changes

-   fix(print): handle `svelte:body` and fix keyframe percentage double-printing ([#18234](https://github.com/sveltejs/svelte/pull/18234))

-   fix: execute uninitialized derived even if it's destroyed ([#18228](https://github.com/sveltejs/svelte/pull/18228))

-   fix: use named symbols everywhere ([#18238](https://github.com/sveltejs/svelte/pull/18238))

-   fix: don't run teardown effects when deriveds are unfreezed ([#18227](https://github.com/sveltejs/svelte/pull/18227))

-   fix: unset context synchronously in `run` ([#18236](https://github.com/sveltejs/svelte/pull/18236))

</Release>

<Release version="svelte@5.55.7" date="May 14, 2026" published="2026-05-14T19:07:37.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.7">
### Patch Changes

-   fix: prevent XSS on `hydratable` from user contents ([`a16ebc67bbcf8f708360195687e1b2719463e1a4`](https://github.com/sveltejs/svelte/commit/a16ebc67bbcf8f708360195687e1b2719463e1a4))

-   chore: bump devalue ([#18219](https://github.com/sveltejs/svelte/pull/18219))

-   fix: disallow empty attribute names during SSR ([`547853e2406a2147ad7fb5ffeba95b01bd9642da`](https://github.com/sveltejs/svelte/commit/547853e2406a2147ad7fb5ffeba95b01bd9642da))

-   fix: harden regex ([`d2375e2ebcab5c88feb5652f1a9d621b8f06b259`](https://github.com/sveltejs/svelte/commit/d2375e2ebcab5c88feb5652f1a9d621b8f06b259))

-   fix: move Svelte runtime properties to symbols ([`e1cbbd96441e82c9eb8a23a2903c0d06d3cda991`](https://github.com/sveltejs/svelte/commit/e1cbbd96441e82c9eb8a23a2903c0d06d3cda991))

</Release>

<Release version="svelte@5.55.6" date="May 14, 2026" published="2026-05-14T18:04:38.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.6">
### Patch Changes

-   fix: leave stale promises to wait for a later resolution, instead of rejecting ([#18180](https://github.com/sveltejs/svelte/pull/18180))

-   fix: keep dependencies of `$state.eager/pending` ([#18218](https://github.com/sveltejs/svelte/pull/18218))

-   fix: reapply context after transforming error during SSR ([#18099](https://github.com/sveltejs/svelte/pull/18099))

-   fix: don't rebase just-created batches ([#18117](https://github.com/sveltejs/svelte/pull/18117))

-   chore: allow `null` for `pending` in typings ([#18201](https://github.com/sveltejs/svelte/pull/18201))

-   fix: flush eager effects in production ([#18107](https://github.com/sveltejs/svelte/pull/18107))

-   fix: rethrow error of failed iterable after calling `return()` ([#18169](https://github.com/sveltejs/svelte/pull/18169))

-   fix: account for proxified instance when updating `bind:this` ([#18147](https://github.com/sveltejs/svelte/pull/18147))

-   fix: ensure scheduled batch is flushed if not obsolete ([#18131](https://github.com/sveltejs/svelte/pull/18131))

-   fix: resolve stale deriveds with latest value ([#18167](https://github.com/sveltejs/svelte/pull/18167))

-   chore: remove unnecessary `increment_pending` calls ([#18183](https://github.com/sveltejs/svelte/pull/18183))

-   fix: correctly compile component member expressions for SSR ([#18192](https://github.com/sveltejs/svelte/pull/18192))

-   fix: reset `source.updated` stack traces after `flush` ([#18196](https://github.com/sveltejs/svelte/pull/18196))

-   fix: replacing async 'blocking' strategy with 'merging' ([#18205](https://github.com/sveltejs/svelte/pull/18205))

-   fix: allow `@debug` tags to reference awaited variables ([#18138](https://github.com/sveltejs/svelte/pull/18138))

-   fix: re-run fallback props if dependencies update ([#18146](https://github.com/sveltejs/svelte/pull/18146))

-   fix: abort running obsolete async branches ([#18118](https://github.com/sveltejs/svelte/pull/18118))

-   fix: ignore comments when reading CSS values ([#18153](https://github.com/sveltejs/svelte/pull/18153))

-   fix: wrap `Promise.all` in `save` during SSR ([#18178](https://github.com/sveltejs/svelte/pull/18178))

-   fix: ignore false-positive errors of `$inspect` dependencies ([#18106](https://github.com/sveltejs/svelte/pull/18106))

</Release>

<Release version="svelte@5.55.5" date="April 23, 2026" published="2026-04-23T23:48:48.000Z" url="https://github.com/sveltejs/svelte/releases/tag/svelte%405.55.5">
### Patch Changes

-   fix: don't mark deriveds while an effect is updating ([#18124](https://github.com/sveltejs/svelte/pull/18124))

-   fix: do not dispatch introstart event with animation of animate directive ([#18122](https://github.com/sveltejs/svelte/pull/18122))

</Release>

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