Svelte

Patch Changes

• fix: resolve paths to route files with the letter drive on Windows (#15793)

Minor Changes

• feat: support query.batch in requested(...) (#15751)

• breaking: on the server, make the promise returned from refresh represent adding the refresh to the map, not the time it takes to run the remote function (#15705)

• feat: experimental query.live function (#15705)

Patch Changes

• fix: unwrap Promise in RemoteCommand output type (#15771)

• fix: empty call to .updates() on a command/form invocation means "don't update anything" (#15705)

• fix: form.fields.foo.as('checkbox', default_value) now works (#15752)

• fix: remote forms with default values defined by field.as('text', defaultValue) now correctly reset to the provided default values once submitted (#15753)

• fix: make sure queries always get started correctly (#15705)

• fix: allow plain functions as overrides in updates (#15705)

Svelte CLI Community Add-ons, TypeScript 6.0 support in SvelteKit

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)

Minor Changes

• breaking: require limit in requested (as originally intended) (#15739)

• feat: RemoteQueryFunction gains an optional third generic parameter Validated (defaulting to Input) that represents the argument type after schema validation/transformation (#15739)

• breaking: requested now yields { arg, query } entries instead of the validated argument (#15739)

Patch Changes

• fix: allow query().current, .error, .loading, and .ready to work in non-reactive contexts (#15699)

• fix: prevent deep_set crash on nullish nested values (#15600)

• fix: restore correct RemoteFormFields typing for nullable array fields (e.g. when a schema uses .default([])), so .as('checkbox') and friends work again (#15723)

• fix: don't warn about removed SSI comments in transformPageChunk (#15695)

  Server-side include (SSI) directives like <!--#include virtual="..." --> are HTML comments that are replaced by servers such as nginx. Previously, removing them in transformPageChunk would trigger a false positive warning about breaking Svelte's hydration. Since SSI comments always start with <!--# and Svelte's hydration comments never do, they can be safely excluded from the check.

• Change enhance function return type from void to MaybePromise<void>. (#15710)

• fix: throw an error when resolve is called with an external URL (#15733)

• fix: avoid FOUC for CSR-only pages by loading styles and fonts before CSR starts (#15718)

• fix: reset form result on redirect (#15724)

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)

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)

Patch Changes

• fix: better validation for redirect inputs (10d7b44)

• fix: enforce BODY_SIZE_LIMIT on chunked requests (3202ed6)

• fix: use default values as fallbacks (#15680)

• fix: relax form typings for union types (#15687)

Minor Changes

• feat: return boolean from submit to indicate submission validity for enhanced form remote functions (#15530)

Patch Changes

• fix: use array type for select fields that accept multiple values (#15591)

• fix: silently 404 Chrome DevTools workspaces request in dev and preview (#15656)

• fix: config.kit.csp.directives['trusted-types'] requires 'svelte-trusted-html' (and 'sveltekit-trusted-url' when a service worker is automatically registered) if it is configured (#15323)

• fix: avoid inlineDynamicImports ignored with codeSplitting warning when using Vite 8 (#15647)

• fix: reimplement treeshaking non-dynamic prerendered remote functions (#15447)

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)

Patch Changes

• chore: update JSDoc (#15640)

Minor Changes

• breaking: rework client-driven refreshes (#15562)

• breaking: stabilize remote function caching by sorting object keys (#15570)

• breaking: add run() method to queries, disallow awaiting queries outside render (#15533)

• feat: support TypeScript 6.0 (#15595)

• breaking: isolate command-triggered query refresh failures per-query (#15562)

• feat: use hydratable for remote function transport (#15533)

• feat: allow form fields to specify a default value (field.as(type, value)) (#15577)

Patch Changes

• fix: don't request new data when .refresh is called on a query with no cache entry (#15533)

• fix: allow using multiple remote functions within one async derived (#15561)

• fix: avoid false-positive overridden Vite base setting warning when setting a paths.base in svelte.config.js (#15623)

• fix: manage queries in their own $effect.root (#15533)

• fix: avoid inlineDynamicImports deprecation warning when building the service worker with Vite 8 (#15550)

• fix: correctly escape backticks when precomputing CSS (#15593)

• fix: discard obsolete forks before finishing navigation (#15634)

• chore: tighten up override implementation (#15562)

• fix: ensure the default Svelte 5 error.svelte file uses runes mode (#15609)

• fix: deduplicate same-cache-key batch calls during SSR (#15533)

• fix: decrement pending_count when form callback doesn't call submit() (#15520)

MCP in OpenCode, functions in config and error boundaries on the server.

Monthly roundup of new features, bug fixes, and community highlights in the Svelte ecosystem.

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)

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)

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)

Minor Changes

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

Patch Changes

• fix: reinstate reactivity loss tracking (#17801)

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)

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)

Patch Changes

• chore: add support for vite-plugin-svelte 7 (#15539)