svelte@5.56.0

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)

svelte@5.55.10

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)

svelte@5.55.9

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)

svelte@5.55.8

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)

svelte@5.55.7

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)

svelte@5.55.6

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)

svelte@5.55.5

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)

svelte@5.55.4

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)

svelte@5.55.3

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)

svelte@5.55.2

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)