v4.2.8

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Patch Changes

• fix: port over props that were set prior to initialization (#​9701)

v4.2.7

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Patch Changes

• fix: handle spreads within static strings (#​9554)

v4.2.6

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Patch Changes

• fix: adjust static attribute regex (#​9551)

v4.2.5

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Patch Changes

• fix: ignore expressions in top level script/style tag attributes (#​9498)

v4.2.4

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Patch Changes

• fix: handle closing tags inside attribute values (#​9486)

v4.2.3

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Patch Changes

• fix: improve a11y-click-events-have-key-events message (#​9358)

• fix: more robust hydration of html tag (#​9184)

v4.2.2

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Patch Changes

• fix: support camelCase properties on custom elements (#​9328)

• fix: add missing plaintext-only value to contenteditable type (#​9242)

• chore: upgrade magic-string to 0.30.4 (#​9292)

• fix: ignore trailing comments when comparing nodes (#​9197)

v4.2.1

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Patch Changes

• fix: update style directive when style attribute is present and is updated via an object prop (#​9187)

• fix: css sourcemap generation with unicode filenames (#​9120)

• fix: do not add module declared variables as dependencies (#​9122)

• fix: handle svelte:element with dynamic this and spread attributes (#​9112)

• fix: silence false positive reactive component warning (#​9094)

• fix: head duplication when binding is present (#​9124)

• fix: take custom attribute name into account when reflecting property (#​9140)

• fix: add indeterminate to the list of HTMLAttributes (#​9180)

• fix: recognize option value on spread attribute (#​9125)

v4.2.0

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Minor Changes

• feat: move svelteHTML from language-tools into core to load the correct svelte/element types (#​9070)

v4.1.2

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Patch Changes

• fix: allow child element with slot attribute within svelte:element (#​9038)

• fix: Add data-* to svg attributes (#​9036)

v4.1.1

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Patch Changes

• fix: svelte:component spread props change not picked up (#​9006)

v4.1.0

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Minor Changes

• feat: add ability to extend custom element class (#​8991)

Patch Changes

• fix: ensure svelte:component evaluates props once (#​8946)

• fix: remove let:variable slot bindings from select binding dependencies (#​8969)

• fix: handle destructured primitive literals (#​8871)

• perf: optimize imports that are not mutated or reassigned (#​8948)

• fix: don't add accessor twice (#​8996)

v4.0.5

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Patch Changes

• fix: generate type definition with nullable types (#​8924)

v4.0.4

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Patch Changes

• fix: claim svg tags in raw mustache tags correctly (#​8910)

• fix: repair invalid raw html content during hydration (#​8912)

v4.0.3

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Patch Changes

• fix: handle falsy srcset values (#​8901)

v4.0.2

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Patch Changes

• fix: reflect all custom element prop updates back to attribute (#​8898)

• fix: shrink custom element baseline a bit (#​8858)

• fix: use non-destructive hydration for all @html tags (#​8880)

• fix: align disclose-version exports specification (#​8874)

• fix: check srcset when hydrating to prevent needless requests (#​8868)

v4.0.1

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Patch Changes

• fix: ensure identifiers in destructuring contexts don't clash with existing ones (#​8840)

• fix: ensure createEventDispatcher and ActionReturn work with types from generic function parameters (#​8872)

• fix: apply transition to <svelte:element> with local transition (#​8865)

• fix: relax a11y "no redundant role" rule for li, ul, ol (#​8867)

• fix: remove tsconfig.json from published package (#​8859)

v4.0.0

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Major Changes

• breaking: Minimum supported Node version is now Node 16 (#​8566)

• breaking: Minimum supported webpack version is now webpack 5 (#​8515)

• breaking: Bundlers must specify the browser condition when building a frontend bundle for the browser (#​8516)

• breaking: Minimum supported vite-plugin-svelte version is now 2.4.1. SvelteKit users can upgrade to 1.20.0 or newer to ensure a compatible version (#​8516)

• breaking: Minimum supported rollup-plugin-svelte version is now 7.1.5 (198dbcf)

• breaking: Minimum supported svelte-loader is now 3.1.8 (198dbcf)

• breaking: Minimum supported TypeScript version is now TypeScript 5 (it will likely work with lower versions, but we make no guarantees about that) (#​8488)

• breaking: Remove svelte/register hook, CJS runtime version and CJS compiler output (#​8613)

• breaking: Stricter types for createEventDispatcher (see PR for migration instructions) (#​7224)

• breaking: Stricter types for Action and ActionReturn (see PR for migration instructions) (#​7442)

• breaking: Stricter types for onMount - now throws a type error when returning a function asynchronously to catch potential mistakes around callback functions
  (see PR for migration instructions) (#​8136)

• breaking: Overhaul and drastically improve creating custom elements with Svelte (see PR for list of changes and migration instructions) (#​8457)

• breaking: Deprecate SvelteComponentTyped in favor of SvelteComponent (#​8512)

• breaking: Make transitions local by default to prevent confusion around page navigations (#​6686)

• breaking: Error on falsy values instead of stores passed to derived (#​7947)

• breaking: Custom store implementers now need to pass an update function additionally to the set function (#​6750)

• breaking: Do not expose default slot bindings to named slots and vice versa (#​6049)

• breaking: Change order in which preprocessors are applied (#​8618)

• breaking: The runtime now makes use of classList.toggle(name, boolean) which does not work in very old browsers (#​8629)

• breaking: apply inert to outroing elements (#​8628)

• breaking: use CustomEvent constructor instead of deprecated createEvent method (#​8775)

Minor Changes

• Add a way to modify attributes for script/style preprocessors (#​8618)

• Improve hydration speed by adding data-svelte-h attribute to detect unchanged HTML elements (#​7426)

• Add a11y no-noninteractive-element-interactions rule (#​8391)

• Add a11y-no-static-element-interactionsrule (#​8251)

• Allow #each to iterate over iterables like Set, Map etc (#​7425)

• Improve duplicate key error for keyed each blocks (#​8411)

• Warn about : in attributes and props to prevent ambiguity with Svelte directives (#​6823)

• feat: add version info to window. You can opt out by setting discloseVersion to false in the compiler options (#​8761)

• feat: smaller minified output for destructor chunks (#​8763)

Patch Changes

• Bind null option and input values consistently (#​8312)

• Allow $store to be used with changing values including nullish values (#​7555)

• Initialize stylesheet with /* empty */ to enable setting CSP directive that also works in Safari (#​7800)

• Treat slots as if they don't exist when using CSS adjacent and general sibling combinators (#​8284)

• Fix transitions so that they don't require a style-src 'unsafe-inline' Content Security Policy (CSP) (#​6662).

• Explicitly disallow var declarations extending the reactive statement scope (#​6800)

• Improve error message when trying to use animate: directives on inline components (#​8641)

• fix: export ComponentType from svelte entrypoint (#​8578)

• fix: never use html optimization for mustache tags in hydration mode (#​8744)

• fix: derived store types (#​8578)

• Generate type declarations with dts-buddy (#​8578)

• fix: ensure types are loaded with all TS settings (#​8721)

• fix: account for preprocessor source maps when calculating meta info (#​8778)

• chore: deindent cjs output for compiler (#​8785)

• warn on boolean compilerOptions.css (#​8710)

• fix: export correct SvelteComponent type (#​8721)

v3.59.2

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• Fix escaping <textarea bind:value={...}> values in SSR

v3.59.1

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• Handle dynamic values in a11y-autocomplete-valid (#​8567)

v3.59.0

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• Add ResizeObserver bindings contentRect/contentBoxSize/borderBoxSize/devicePixelContentBoxSize (#​8022)
• Add devicePixelRatio binding for <svelte:window> (#​8285)
• Add fullscreenElement and visibilityState bindings for <svelte:document> (#​8507)
• Add a11y-autocomplete-valid warning (#​8520)
• Fix handling of width/height attributes when spreading (#​6752)
• Fix updating of interpolated style: directive when using spread (#​8438)
• Remove style: directive property when value is undefined (#​8462)
• Fix type of VERSION compiler export (#​8498)
• Relax a11y-no-redundant-roles warning (#​8536)
• Handle nested array rest destructuring (#​8552, #​8554)

v3.58.0

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• Add bind:innerText for contenteditable elements (#​3311)
• Add support for CSS @container queries (#​6969)
• Respect preserveComments in DOM output (#​7182)
• Allow use of document for target in typings (#​7554)
• Add a11y-interactive-supports-focus warning (#​8392)
• Fix equality check when updating dynamic text (#​5931)
• Relax a11y-no-noninteractive-element-to-interactive-role warning (#​8402)
• Properly handle microdata attributes (#​8413)
• Prevent name collision when using computed destructuring variables (#​8417)
• Fix escaping <textarea value={...}> values in SSR (#​8429)

v3.57.0

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• Add <svelte:document> (#​3310)
• Add a11y no-noninteractive-element-to-interactive-role (#​8167)
• Stop intro transition from triggering incorrectly (#​6152, #​6812)
• Support computed and literal properties when destructuring objects in the template (#​6609)
• Give style: directive precedence over style= attribute (#​7475)
• Select <option> with selected attribute when initial state is undefined (#​8361)
• Prevent derived store callbacks after store is unsubscribed from (#​8364)
• Account for bind:group members being spread across multiple control flow blocks (#​8372)
• Revert buggy reactive statement optimization (#​8374)
• Support CSS units in the fly and blur transitions (#​7623)

v3.56.0

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• Add |stopImmediatePropagation event modifier (#​5085)
• Add axis parameter to slide transition (#​6182)
• Add readonly utility to convert writable store to readonly (#​6518)
• Add readyState binding for media elements (#​6666)
• Generate valid automatic component names when the filename contains only special characters (#​7143)
• Add naturalWidth and naturalHeight bindings (#​7771)
• Support <!-- svelte-ignore ... --> on components (#​8082)
• Add a11y warnings:
  • aria-activedescendant-has-tabindex: checks that elements with aria-activedescendant have a tabindex (#​8172)
  • role-supports-aria-props: checks that the (implicit) element role supports the given aria attributes (#​8195)
• Add data-sveltekit-replacestate and data-sveltekit-keepfocus attribute typings (#​8281)
• Compute node dimensions immediately before crossfading (#​4111)
• Fix potential infinite invalidate loop with <svelte:component> (#​4129)
• Ensure bind:offsetHeight updates initially (#​4233)
• Don't set selected options if value is unbound or not passed (#​5644)
• Validate component :global() selectors (#​6272)
• Improve warnings:
  • Make noreferrer warning less zealous (#​6289)
  • Omit a11y warnings on <video aria-hidden="true"> (#​7874)
  • Omit a11y warnings on <svelte:element> (#​7939)
  • Detect unused empty attribute CSS selectors (#​8042)
  • Omit "no child content" warning on elements with aria-label (#​8296)
• Check value equality for <input type="search"> and <input type="url"> (#​7027)
• Do not select a disabled <option> by default when the initial bound value is undefined (#​7041)
• Handle {@​html} tags inside <template> tags (#​7364)
• Ensure afterUpdate is not called after onDestroy (#​7476)
• Improve handling of inert attribute (#​7500)
• Reduce use of template literals in SSR output for better performance (#​7539)
• Ensure <input> value persists when swapping elements with spread attributes in an {#each} block (#​7578)
• Simplify generated code for reactive statements if dependencies are all static (#​7942)
• Fix race condition on <svelte:element> with transitions (#​7948)
• Allow assigning to a property of a const when destructuring (#​7964)
• Match browser behavior for decoding malformed HTML entities (#​8026)
• Ensure trusted-types CSP compatibility for Web Components (#​8134)
• Optimise <svelte:element> output code for static tag and static attribute (#​8161)
• Don't throw when calling unsubscribing from a store twice (#​8186)
• Clear inputs when bind:group value is set to undefined (#​8214)
• Fix handling of nested arrays with keyed {#each} containing a non-keyed {#each} (#​8282)