svelte/CHANGELOG.md

Cybernetically enhanced web apps

# Svelte changelog

## 3.59.0

* Add `ResizeObserver` bindings `contentRect`/`contentBoxSize`/`borderBoxSize`/`devicePixelContentBoxSize` ([#8022](https://github.com/sveltejs/svelte/pull/8022))
* Add `devicePixelRatio` binding for `<svelte:window>` ([#8285](https://github.com/sveltejs/svelte/issues/8285))
* Add `fullscreenElement` and `visibilityState` bindings for `<svelte:document>` ([#8507](https://github.com/sveltejs/svelte/pull/8507))
* Add `a11y-autocomplete-valid` warning ([#8520](https://github.com/sveltejs/svelte/pull/8520))
* Fix handling of `width`/`height` attributes when spreading ([#6752](https://github.com/sveltejs/svelte/issues/6752))
* Fix updating of interpolated `style:` directive when using spread ([#8438](https://github.com/sveltejs/svelte/issues/8438))
* Remove `style:` directive property when value is `undefined` ([#8462](https://github.com/sveltejs/svelte/issues/8462))
* Fix type of `VERSION` compiler export ([#8498](https://github.com/sveltejs/svelte/issues/8498))
* Relax `a11y-no-redundant-roles` warning ([#8536](https://github.com/sveltejs/svelte/pull/8536))
* Handle nested array rest destructuring ([#8552](https://github.com/sveltejs/svelte/issues/8552), [#8554](https://github.com/sveltejs/svelte/issues/8554))
## 3.58.0

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

## 3.57.0

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

## 3.56.0

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

## 3.55.1

* Fix `draw` transition with delay showing a dot at the beginning of the path ([#6816](https://github.com/sveltejs/svelte/issues/6816))
* Fix infinity runtime call stack when propagating bindings ([#7032](https://github.com/sveltejs/svelte/issues/7032))
* Fix static `<svelte:element>` optimization in production mode ([#7937](https://github.com/sveltejs/svelte/issues/7937))
* Fix `svelte-ignore` comment breaking named slot ([#8075](https://github.com/sveltejs/svelte/issues/8075))
* Revert change to prevent running init binding unnecessarily ([#8103](https://github.com/sveltejs/svelte/issues/8103))
* Fix adding duplicate event listeners with `<svelte:element on:event>` ([#8129](https://github.com/sveltejs/svelte/issues/8129))
* Improve detection of promises that are also functions ([#8162](https://github.com/sveltejs/svelte/pull/8162))
* Avoid mutating spread component props during SSR ([#8171](https://github.com/sveltejs/svelte/issues/8171))
* Add missing typing for global `part` attribute ([#8181](https://github.com/sveltejs/svelte/issues/8181))
* Add missing `submitter` property to `on:submit` event type

## 3.55.0

* Add `svelte/elements` for HTML/Svelte typings ([#7649](https://github.com/sveltejs/svelte/pull/7649))

## 3.54.0

* Pass `options.direction` argument to custom transition functions ([#3918](https://github.com/sveltejs/svelte/issues/3918))
* Support fallback a11y WAI-ARIA roles ([#8044](https://github.com/sveltejs/svelte/issues/8044))
* Prevent running init binding unnecessarily ([#5689](https://github.com/sveltejs/svelte/issues/5689), [#6298](https://github.com/sveltejs/svelte/issues/6298))
* Allow updating variables from `@const` declared function ([#7843](https://github.com/sveltejs/svelte/issues/7843))
* Do not emit `a11y-no-noninteractive-tabindex` warning if element has a `tabpanel` ([#8025](https://github.com/sveltejs/svelte/pull/8025))
* Fix escaping SSR'd values in `style:` directive ([#8085](https://github.com/sveltejs/svelte/issues/8085))

## 3.53.1

* Fix exception in `rel=` attribute check with dynamic values ([#7994](https://github.com/sveltejs/svelte/issues/7994))
* Do not emit deprecation warnings for `css` compiler options for now ([#8009](https://github.com/sveltejs/svelte/issues/8009))
* Make compiler run in browser again ([#8010](https://github.com/sveltejs/svelte/issues/8010))
* Upgrade `tslib` ([#8013](https://github.com/sveltejs/svelte/issues/8013))

## 3.53.0

* Check whether `parentNode` exists before removing child ([#6037](https://github.com/sveltejs/svelte/issues/6037))
* Upgrade various dependencies, notably `css-tree` to `2.2.1` ([#7572](https://github.com/sveltejs/svelte/pull/7572), [#7982](https://github.com/sveltejs/svelte/pull/7982))
* Extend `css` compiler option with `'external' | 'injected' | 'none'` settings and deprecate old `true | false` values ([#7914](https://github.com/sveltejs/svelte/pull/7914))

## 3.52.0

* Throw compile-time error when attempting to update `const` variable ([#4895](https://github.com/sveltejs/svelte/issues/4895))
* Warn when using `<a target="_blank">` without `rel="noreferrer"` ([#6188](https://github.com/sveltejs/svelte/issues/6188))
* Support `style:foo|important` modifier ([#7365](https://github.com/sveltejs/svelte/issues/7365))
* Fix hydration regression with `{@html}` and components in `<svelte:head>` ([#7941](https://github.com/sveltejs/svelte/pull/7941))

## 3.51.0

* Add a11y warnings:
	* `a11y-click-events-have-key-events`: check if click event is accompanied by key events ([#5073](https://github.com/sveltejs/svelte/pull/5073))
	* `a11y-no-noninteractive-tabindex`: check for tabindex on non-interactive elements ([#6693](https://github.com/sveltejs/svelte/pull/6693))
* Warn when two-way binding to `{...rest}` object in `{#each}` block ([#6860](https://github.com/sveltejs/svelte/issues/6860))
* Support `--style-props` on `<svelte:component>` ([#7461](https://github.com/sveltejs/svelte/issues/7461))
* Supports nullish values for component event handlers ([#7568](https://github.com/sveltejs/svelte/issues/7568))
* Supports SVG elements with `<svelte:element>`([#7613](https://github.com/sveltejs/svelte/issues/7613))
* Treat `inert` as boolean attribute ([#7785](https://github.com/sveltejs/svelte/pull/7785))
* Support `--style-props` for SVG components ([#7808](https://github.com/sveltejs/svelte/issues/7808))
* Fix false positive dev warnings about unset props when they are bound ([#4457](https://github.com/sveltejs/svelte/issues/4457))
* Fix hydration with `{@html}` and components in `<svelte:head>` ([#4533](https://github.com/sveltejs/svelte/issues/4533), [#6463](https://github.com/sveltejs/svelte/issues/6463), [#7444](https://github.com/sveltejs/svelte/issues/7444))
* Support scoped style for `<svelte:element>` ([#7443](https://github.com/sveltejs/svelte/issues/7443))
* Improve error message for invalid value for `<svelte:component this={...}>` ([#7550](https://github.com/sveltejs/svelte/issues/7550))
* Improve error message when using logic blocks or tags at invalid location ([#7552](https://github.com/sveltejs/svelte/issues/7552))
* Warn instead of throwing error if `<svelte:element>` is a void tag ([#7566](https://github.com/sveltejs/svelte/issues/7566))
* Supports custom elements in `<svelte:element>` ([#7733](https://github.com/sveltejs/svelte/issues/7733))
* Fix calling component unmount if a component is mounted and then immediately unmounted ([#7817](https://github.com/sveltejs/svelte/issues/7817))
* Do not generate `a11y-role-has-required-aria-props` warning when elements match their semantic role ([#7837](https://github.com/sveltejs/svelte/issues/7837))
* Improve performance of custom element data setting in `<svelte:element>` ([#7869](https://github.com/sveltejs/svelte/pull/7869))

## 3.50.1

* Add all global objects and functions as known globals ([#3805](https://github.com/sveltejs/svelte/issues/3805), [#7223](https://github.com/sveltejs/svelte/issues/7223))
* Fix regression with style manager ([#7828](https://github.com/sveltejs/svelte/issues/7828))

## 3.50.0

* Add a11y warnings:
	* `a11y-incorrect-aria-attribute-type`: check ARIA state and property values ([#6978](https://github.com/sveltejs/svelte/pull/6978))
	* `a11y-no-abstract-role`: check that ARIA roles are non-abstract ([#6241](https://github.com/sveltejs/svelte/pull/6241))
	* `a11y-no-interactive-element-to-noninteractive-role`: check for non-interactive roles used on interactive elements ([#5955](https://github.com/sveltejs/svelte/pull/5955))
	* `a11y-role-has-required-aria-props`: check that elements with `role` attribute have all required attributes for that role ([#5852](https://github.com/sveltejs/svelte/pull/5852))
* Add `ComponentEvents` convenience type ([#7702](https://github.com/sveltejs/svelte/pull/7702))
* Add `SveltePreprocessor` utility type ([#7742](https://github.com/sveltejs/svelte/pull/7742))
* Enhance action typings ([#7805](https://github.com/sveltejs/svelte/pull/7805))
* Remove empty stylesheets created from transitions ([#4801](https://github.com/sveltejs/svelte/issues/4801), [#7164](https://github.com/sveltejs/svelte/issues/7164))
* Make `a11y-label-has-associated-control` warning check all descendants for input control ([#5528](https://github.com/sveltejs/svelte/issues/5528))
* Only show lowercase component name warnings for non-HTML/SVG elements ([#5712](https://github.com/sveltejs/svelte/issues/5712))
* Disallow invalid CSS selectors starting with a combinator ([#7643](https://github.com/sveltejs/svelte/issues/7643))
* Use `Node.parentNode` instead of `Node.parentElement` for legacy browser support ([#7723](https://github.com/sveltejs/svelte/issues/7723))
* Handle arrow function on `<slot>` inside `<svelte:fragment>` ([#7485](https://github.com/sveltejs/svelte/issues/7485))
* Improve parsing speed when encountering large blocks of whitespace ([#7675](https://github.com/sveltejs/svelte/issues/7675))
* Fix `class:` directive updates in aborted/restarted transitions ([#7764](https://github.com/sveltejs/svelte/issues/7764))

## 3.49.0

* Improve performance of string escaping during SSR ([#5701](https://github.com/sveltejs/svelte/pull/5701))
* Add `ComponentType` and `ComponentProps` convenience types ([#6770](https://github.com/sveltejs/svelte/pull/6770))
* Add support for CSS `@layer` ([#7504](https://github.com/sveltejs/svelte/issues/7504))
* Export `CompileOptions` from `svelte/compiler` ([#7658](https://github.com/sveltejs/svelte/pull/7658))
* Fix DOM-less components not being properly destroyed ([#7488](https://github.com/sveltejs/svelte/issues/7488))
* Fix `class:` directive updates with `<svelte:element>` ([#7521](https://github.com/sveltejs/svelte/issues/7521), [#7571](https://github.com/sveltejs/svelte/issues/7571))
* Harden attribute escaping during SSR ([#7530](https://github.com/sveltejs/svelte/pull/7530))

## 3.48.0

* Allow creating cancelable custom events with `createEventDispatcher` ([#4623](https://github.com/sveltejs/svelte/issues/4623))
* Support `{@const}` tag in `{#if}` blocks [#7241](https://github.com/sveltejs/svelte/issues/7241)
* Return the context object in `setContext` [#7427](https://github.com/sveltejs/svelte/issues/7427)
* Allow comments inside `{#each}` blocks when using `animate:` ([#3999](https://github.com/sveltejs/svelte/issues/3999))
* Fix `|local` transitions in `{#key}` blocks ([#5950](https://github.com/sveltejs/svelte/issues/5950))
* Support svg namespace for `{@html}` ([#7002](https://github.com/sveltejs/svelte/issues/7002), [#7450](https://github.com/sveltejs/svelte/issues/7450))
* Fix `{@const}` tag not working inside a component when there's no `let:` [#7189](https://github.com/sveltejs/svelte/issues/7189)
* Remove extraneous leading newline inside `<pre>` and `<textarea>` ([#7264](https://github.com/sveltejs/svelte/issues/7264))
* Fix erroneous setting of `textContent` for `<template>` elements ([#7297](https://github.com/sveltejs/svelte/pull/7297))
* Fix value of `let:` bindings not updating in certain cases ([#7440](https://github.com/sveltejs/svelte/issues/7440))
* Fix handling of void tags in `<svelte:element>` ([#7449](https://github.com/sveltejs/svelte/issues/7449))
* Fix handling of boolean attributes in `<svelte:element>` ([#7478](https://github.com/sveltejs/svelte/issues/7478))
* Add special style scoping handling of `[open]` selectors on `<dialog>` elements ([#7495](https://github.com/sveltejs/svelte/issues/7494))

## 3.47.0

* Add support for dynamic elements through `<svelte:element>` ([#2324](https://github.com/sveltejs/svelte/issues/2324))
* Miscellaneous variable context fixes in `{@const}` ([#7222](https://github.com/sveltejs/svelte/pull/7222))
* Fix `{#key}` block not being reactive when the key variable is not otherwise used ([#7408](https://github.com/sveltejs/svelte/issues/7408))
* Add `Symbol` as a known global ([#7418](https://github.com/sveltejs/svelte/issues/7418))

## 3.46.6

* Actually include action TypeScript interface in published package ([#7407](https://github.com/sveltejs/svelte/pull/7407))

## 3.46.5

* Add TypeScript interfaces for typing actions ([#6538](https://github.com/sveltejs/svelte/issues/6538))
* Do not generate `unused-export-let` warning inside `<script context="module">` blocks ([#7055](https://github.com/sveltejs/svelte/issues/7055))
* Do not collapse whitespace-only CSS vars ([#7152](https://github.com/sveltejs/svelte/issues/7152))
* Add `aria-description` to the list of allowed ARIA attributes ([#7301](https://github.com/sveltejs/svelte/issues/7301))
* Fix attribute escaping during SSR ([#7327](https://github.com/sveltejs/svelte/issues/7327))
* Prevent `.innerHTML` optimization from being used when `style:` directive is present ([#7386](https://github.com/sveltejs/svelte/issues/7386))

## 3.46.4

* Avoid `maximum call stack size exceeded` errors on large components ([#4694](https://github.com/sveltejs/svelte/issues/4694))
* Preserve leading space with `preserveWhitespace: true` ([#4731](https://github.com/sveltejs/svelte/issues/4731))
* Preserve leading space in `<pre>` tags ([#6437](https://github.com/sveltejs/svelte/issues/6437))
* Improve error message when trying to use `style:` directives on inline components ([#7177](https://github.com/sveltejs/svelte/issues/7177))
* Add `FormData` as a known global ([#7199](https://github.com/sveltejs/svelte/pull/7199))
* Mark `css`/`instance`/`module` AST properties as optional in types ([#7204](https://github.com/sveltejs/svelte/pull/7204))

## 3.46.3

* Ignore whitespace in `{#each}` blocks when containing elements with `animate:` ([#5477](https://github.com/sveltejs/svelte/pull/5477))
* Throw compiler error when variable in `context="instance"` collides with import in `context="module"` ([#7090](https://github.com/sveltejs/svelte/issues/7090))
* Fix compiler crash when `{@const}` contains arrow functions ([#7134](https://github.com/sveltejs/svelte/issues/7134))

## 3.46.2

* Export `FlipParams` interface from `svelte/animate` ([#7103](https://github.com/sveltejs/svelte/issues/7103))
* Fix `style:` directive reactivity inside `{#each}` block ([#7136](https://github.com/sveltejs/svelte/issues/7136))

## 3.46.1

* Handle `style:kebab-case` directives ([#7122](https://github.com/sveltejs/svelte/issues/7122))
* Improve AST produced for `style:` directives ([#7127](https://github.com/sveltejs/svelte/pull/7127))

## 3.46.0

* Implement `{@const}` tag ([RFC #33](https://github.com/sveltejs/rfcs/pull/33), [#6413](https://github.com/sveltejs/svelte/pull/6413))
* Implement `style:` directive ([RFC #42](https://github.com/sveltejs/rfcs/pull/42), [#5923](https://github.com/sveltejs/svelte/pull/5923))
* Fix style manager conflicts when using multiple Svelte instances ([#7026](https://github.com/sveltejs/svelte/issues/7026))
* Fix hydration when using `{@html}` ([#7115](https://github.com/sveltejs/svelte/issues/7115))

## 3.45.0

* Fix non-boolean attribute rendering in SSR to render truthy values as-is ([#6121](https://github.com/sveltejs/svelte/issues/6121))
* Fix binding to a member expression also invalidating the member property ([#6921](https://github.com/sveltejs/svelte/issues/6921))
* Fix default values in `{#each}`/etc. destructurings not being considered references for the purposes of compiler warnings ([#6964](https://github.com/sveltejs/svelte/issues/6964))
* Fix `{:else if}` value incorrectly being cached ([#7043](https://github.com/sveltejs/svelte/pull/7043))
* Add `a11y-no-redundant-roles` warning ([#7067](https://github.com/sveltejs/svelte/pull/7067))
* Fix code generation error with arrow functions whose bodies are object destructuring assignments ([#7087](https://github.com/sveltejs/svelte/issues/7087))

## 3.44.3

* Fix `bind:this` binding inside `onMount` for manually instantiated component ([#6760](https://github.com/sveltejs/svelte/issues/6760))
* Prevent cursor jumps with one-way binding for other `type="text"`-like `<input>`s ([#6941](https://github.com/sveltejs/svelte/pull/6941))
* Exclude `async` loops from `loopGuardTimeout` ([#6945](https://github.com/sveltejs/svelte/issues/6945))

## 3.44.2

* Fix overly restrictive preprocessor types ([#6904](https://github.com/sveltejs/svelte/pull/6904))
* More specific typing for crossfade function - returns a tuple, not an array ([#6926](https://github.com/sveltejs/svelte/issues/6926))
* Add `URLSearchParams` as a known global ([#6938](https://github.com/sveltejs/svelte/pull/6938))
* Add `types` field to `exports` map ([#6939](https://github.com/sveltejs/svelte/issues/6939))

## 3.44.1

* Fix code generation when a multi-line `return` statement contains comments ([code-red#36](https://github.com/Rich-Harris/code-red/issues/36))
* Fix code generation when `for`/`if`/`while` statements have empty bodies ([#6884](https://github.com/sveltejs/svelte/issues/6884))

## 3.44.0

* Add `enableSourcemap` compiler option ([#6835](https://github.com/sveltejs/svelte/pull/6835))

## 3.43.2

* Fix regression where user-specified `import`s were not rewritten according to the `sveltePath` option ([#6834](https://github.com/sveltejs/svelte/issues/6834))

## 3.43.1

* Prevent a rejecting promise used in `{#await}` during SSR from appearing as an unhandled rejection ([#6789](https://github.com/sveltejs/svelte/issues/6789))

## 3.43.0

* Use export map to expose no-op versions of lifecycle functions for SSR ([#6743](https://github.com/sveltejs/svelte/pull/6743))
* Prefer `context` passed to component constructor, even when running synchronously in another component ([#6753](https://github.com/sveltejs/svelte/issues/6753))
* Handle preprocessors that return empty sourcemaps ([#6757](https://github.com/sveltejs/svelte/pull/6757))

## 3.42.6

* Hide private preprocess typings ([#6622](https://github.com/sveltejs/svelte/issues/6622))
* Fix reactive function in `{:else if}` expression not being properly re-run ([#6727](https://github.com/sveltejs/svelte/pull/6727))

## 3.42.5

* In `draw` transition, account for `stroke-linecap` in determining length ([#4540](https://github.com/sveltejs/svelte/issues/4540))
* Fix regression with destructuring assignments with default values ([#6699](https://github.com/sveltejs/svelte/issues/6699))

## 3.42.4

* Only apply optimized `src` attribute handling when in an `html` namespace ([#6575](https://github.com/sveltejs/svelte/issues/6575))
* Fix styles for transitions and animations being attached to the wrong `document` in `<iframe>`s ([#6637](https://github.com/sveltejs/svelte/issues/6637))
* Fix `<select>` with a `{...spread}` attribute that didn't provide a `value` key getting its value improperly unset ([#6675](https://github.com/sveltejs/svelte/issues/6675))

## 3.42.3

* Add `BigInt` as a known global ([#6671](https://github.com/sveltejs/svelte/pull/6671))
* Fix regression where `onDestroy` in `svelte/ssr` was improperly a no-op ([#6676](https://github.com/sveltejs/svelte/issues/6676))

## 3.42.2

* Collapse whitespace in `class` and `style` attributes ([#6004](https://github.com/sveltejs/svelte/issues/6004))
* Deselect all `<option>`s in a `<select>` where the bound `value` doesn't match any of them ([#6126](https://github.com/sveltejs/svelte/issues/6126))
* In hydrated components, only rely on helpers for creating the types of elements present in the component ([#6555](https://github.com/sveltejs/svelte/issues/6555))
* Add `HTMLElement` and `SVGElement` as known globals ([#6643](https://github.com/sveltejs/svelte/issues/6643))
* Account for scaling in `flip` animations ([#6657](https://github.com/sveltejs/svelte/issues/6657))

## 3.42.1

* Fix regression with reordering keyed `{#each}` blocks when compiling with hydration enabled ([#6561](https://github.com/sveltejs/svelte/issues/6561))

## 3.42.0

* Allow `use:actions` to be used on `<svelte:body>` ([#3163](https://github.com/sveltejs/svelte/issues/3163))
* Improve parser errors for certain invalid components ([#6259](https://github.com/sveltejs/svelte/issues/6259), [#6288](https://github.com/sveltejs/svelte/issues/6288))
* Fix paths in generator JS sourcemaps to be relative ([#6598](https://github.com/sveltejs/svelte/pull/6598))
* Fix overzealous warnings about `context="module"` variables not being reactive ([#6606](https://github.com/sveltejs/svelte/issues/6606))

## 3.41.0

* Support `export { ... } from` syntax in components ([#2214](https://github.com/sveltejs/svelte/issues/2214))
* Support `export let { ... } =` syntax in components ([#5612](https://github.com/sveltejs/svelte/issues/5612))
* Support `{#await ... then/catch}` without a variable for the resolved/rejected value ([#6270](https://github.com/sveltejs/svelte/issues/6270))

## 3.40.3

* Fix `<slot>` data when a transition is cancelled before completing ([#5394](https://github.com/sveltejs/svelte/issues/5394))
* Fix destructuring into variables beginning with `$` so that they result in store updates ([#5653](https://github.com/sveltejs/svelte/issues/5653))
* Fix `in:` transition configuration not properly updating when it's changed after its initial creation ([#6505](https://github.com/sveltejs/svelte/issues/6505))
* Fix applying `:global()` for `>` selector combinator ([#6550](https://github.com/sveltejs/svelte/issues/6550))
* Fix mounting component at detached DOM node ([#6567](https://github.com/sveltejs/svelte/issues/6567))

## 3.40.2

* Fix dynamic `autofocus={...}` attribute handling ([#4995](https://github.com/sveltejs/svelte/issues/4995))
* Add filename to combined source map if needed ([#6089](https://github.com/sveltejs/svelte/pull/6089))
* In AST, parse empty attribute values as an empty string ([#6286](https://github.com/sveltejs/svelte/issues/6286))
* Fix tracking whether transition has started ([#6399](https://github.com/sveltejs/svelte/pull/6399))
* Fix incorrect scoping of `:global()` selectors ([#6550](https://github.com/sveltejs/svelte/issues/6550))

## 3.40.1

* Fix store reactivity regression when using reactive statements ([#6557](https://github.com/sveltejs/svelte/issues/6557))

## 3.40.0

* Support rendering a component in a shadow DOM ([#5869](https://github.com/sveltejs/svelte/issues/5869))
* Fix `:root` selector being erroneously scoped to component ([#4767](https://github.com/sveltejs/svelte/issues/4767))
* Fix `.end` in AST for expressions inside attributes ([#6258](https://github.com/sveltejs/svelte/issues/6258))
* Fix one-way `<select>` binding when it has a spread attribute ([#6433](https://github.com/sveltejs/svelte/issues/6433))
* Various hydration improvements and fixes ([#6449](https://github.com/sveltejs/svelte/pull/6449))
* Use smaller versions of internal helpers when compiling without hydration support ([#6462](https://github.com/sveltejs/svelte/issues/6462))
* Fix two-way binding of values when updating through synchronous component accessors ([#6502](https://github.com/sveltejs/svelte/issues/6502))

## 3.39.0

* Support `bind:group` in SSR ([#4621](https://github.com/sveltejs/svelte/pull/4621))
* Add a11y warning `a11y-mouse-events-have-key-events` which checks that `mouseover`/`mouseout` are accompanied by `focus`/`blur` event handlers ([#5938](https://github.com/sveltejs/svelte/pull/5938))
* Make it possible to silence more warnings ([#5954](https://github.com/sveltejs/svelte/issues/5954))
* Add `|trusted` event modifier ([#6137](https://github.com/sveltejs/svelte/issues/6137))
* Add `varsReport` compiler option to include all variables reference in the component in the `variables` report ([#6192](https://github.com/sveltejs/svelte/pull/6192))
* Add `errorMode` compiler option to try to continue compiling when an error is detected ([#6194](https://github.com/sveltejs/svelte/pull/6194))
* Expose `svelte/ssr` which exports lifecycle methods as no-ops ([#6416](https://github.com/sveltejs/svelte/pull/6416))
* Add `getAllContexts` ([#6447](https://github.com/sveltejs/svelte/issues/6447))
* Throw proper error for `export default function() {}` and `export default class {}` rather than crashing the compiler ([#3275](https://github.com/sveltejs/svelte/issues/3275))
* Fix SSR rendering of falsy `input` values ([#4551](https://github.com/sveltejs/svelte/issues/4551))
* Fix `preserveComments` in SSR mode ([#4730](https://github.com/sveltejs/svelte/issues/4730))
* Do not warn if `context="module"` variables are not the only dependencies in reactive statements ([#5954](https://github.com/sveltejs/svelte/issues/5954))
* Stop checking `a11y-media-has-caption` a11y warning on `<audio>` elements ([#6054](https://github.com/sveltejs/svelte/issues/6054))
* Fix erroneous "unknown prop" warning when using slot on a component ([#6065](https://github.com/sveltejs/svelte/pull/6065))
* Add sourcemaps to all HTML elements ([#6092](https://github.com/sveltejs/svelte/issues/6092))
* Relax `derived` function signature ([#6178](https://github.com/sveltejs/svelte/issues/6178))
* Throw compiler error when passing empty directive names ([#6299](https://github.com/sveltejs/svelte/issues/6299))
* Fix compiler error when using `:where()` inside `:global()` ([#6434](https://github.com/sveltejs/svelte/issues/6434))
* Fix ordering of elements in keyed `{#each}` ([#6444](https://github.com/sveltejs/svelte/issues/6444))
* Remove deprecated a11y warning `a11y-no-onchange warning` ([#6457](https://github.com/sveltejs/svelte/issues/6457))
* Fix `:global()` with pseudo element not being seen as global ([#6468](https://github.com/sveltejs/svelte/issues/6468))
* Allow `:global()` to contain multiple selectors when it is not part of a larger selector ([#6477](https://github.com/sveltejs/svelte/issues/6477))
* Make `<script>` and `<style>` end tag parsing more robust ([#6511](https://github.com/sveltejs/svelte/pull/6511))

## 3.38.3

* Speed up hydration by reducing amount of element reorderings ([#4308](https://github.com/sveltejs/svelte/issues/4308))
* Fix escaping attribute values when using a spread in SSR ([#5756](https://github.com/sveltejs/svelte/issues/5756))
* Throw compiler error when `:global()` contains multiple selectors ([#5907](https://github.com/sveltejs/svelte/issues/5907))
* Give explicit error rather than crashing when an attribute shorthand `{}` is empty ([#6086](https://github.com/sveltejs/svelte/issues/6086))
* Make `<textarea>` end tag parsing more robust ([#6276](https://github.com/sveltejs/svelte/issues/6276))
* Fix `:global(...):some-pseudoclass` selectors not being seen as global ([#6306](https://github.com/sveltejs/svelte/issues/6306))
* Fix type signatures of `writable` and `readable` so it's possible to call them without arguments ([#6291](https://github.com/sveltejs/svelte/issues/6291), [#6345](https://github.com/sveltejs/svelte/issues/6345))
* Preserve `this` in bubbled events ([#6310](https://github.com/sveltejs/svelte/issues/6310))
* Fix slot props not updating when transition is aborted ([#6386](https://github.com/sveltejs/svelte/issues/6386))
* Fix generic props relationship in `SvelteComponentTyped` ([#6400](https://github.com/sveltejs/svelte/pull/6400))

## 3.38.2

* Revert hydration optimisation for the time being ([#6279](https://github.com/sveltejs/svelte/issues/6279))

## 3.38.1

* Fix hydration regression ([#6274](https://github.com/sveltejs/svelte/issues/6274))

## 3.38.0

* Avoid recreating DOM elements during hydration ([#1067](https://github.com/sveltejs/svelte/issues/1067))
* Support passing CSS custom properties to component ([#5628](https://github.com/sveltejs/svelte/issues/5628))
* Support `:global()` as part of compound CSS selectors ([#6222](https://github.com/sveltejs/svelte/issues/6222))
* Fix updating `<slot>` contents when there's an aborted transition ([#3542](https://github.com/sveltejs/svelte/issues/3542))
* Fix setting boolean attributes on custom elements ([#5951](https://github.com/sveltejs/svelte/issues/5951))
* Add missing function overload for `derived` to allow explicitly setting an initial value for non-async derived stores ([#6172](https://github.com/sveltejs/svelte/pull/6172))
* Fix dynamic `href` values erroneously triggering a11y warnings ([#5990](https://github.com/sveltejs/svelte/issues/5990))
* Fix scope leak when updating an `{#await}` block ([#6173](https://github.com/sveltejs/svelte/issues/6173))
* Pass full markup source to `script`/`style` preprocessors ([#6169](https://github.com/sveltejs/svelte/pull/6169))
* Fix `crossfade` types to mark `fallback` as optional ([#6201](https://github.com/sveltejs/svelte/pull/6201))
* Add missing "context" typing to `SvelteComponent` constructor options ([#6236](https://github.com/sveltejs/svelte/pull/6236))
* Don't automatically switch to `svg` namespace when in `foreign` namespace ([#6257](https://github.com/sveltejs/svelte/issues/6257))

## 3.37.0

* Allow root-level context to be passed to the component constructor ([#6032](https://github.com/sveltejs/svelte/pull/6032))

## 3.36.0

* Add `this: void` typing to store functions ([#6094](https://github.com/sveltejs/svelte/pull/6094))
* Export `Spring`, `Tweened` and `EasingFunction` interfaces ([#6070](https://github.com/sveltejs/svelte/issues/6070), [#6056](https://github.com/sveltejs/svelte/pull/6056))
* Export interfaces for transition parameters ([#5207](https://github.com/sveltejs/svelte/issues/5207))
* Export store's useful TypeScript definitions ([#5864](https://github.com/sveltejs/svelte/issues/5864))
* Fix previous breaking change to `svelte/preprocess` types location ([#6100](https://github.com/sveltejs/svelte/pull/6100))
* Fix missing slotted elements in AST ([#6066](https://github.com/sveltejs/svelte/issues/6066))

## 3.35.0

* Implement slotted components and `<svelte:fragment slot="...">` ([#1037](https://github.com/sveltejs/svelte/issues/1037), [#2079](https://github.com/sveltejs/svelte/issues/2079))
* Fix reactivity bug where `slot="..."` is specified after attributes that should be reactive ([#5626](https://github.com/sveltejs/svelte/issues/5626))

## 3.34.0

* Add a `cssHash` option for controlling the classname used for CSS scoping ([#570](https://github.com/sveltejs/svelte/issues/570))

## 3.33.0

* In custom elements, call `onMount` functions when connecting and clean up when disconnecting ([#1152](https://github.com/sveltejs/svelte/issues/1152), [#2227](https://github.com/sveltejs/svelte/issues/2227), [#4522](https://github.com/sveltejs/svelte/pull/4522))
* Allow destructured defaults to refer to other variables ([#5066](https://github.com/sveltejs/svelte/issues/5066))
* Do not emit `contextual-store` warnings for function parameters or declared variables ([#6008](https://github.com/sveltejs/svelte/pull/6008))

## 3.32.3

* Fix removal of lone `:host` selectors ([#5982](https://github.com/sveltejs/svelte/issues/5982))

## 3.32.2

* Fix unnecessary additional invalidation with `<Component bind:prop={obj.foo}/>` ([#3075](https://github.com/sveltejs/svelte/issues/3075), [#4447](https://github.com/sveltejs/svelte/issues/4447), [#5555](https://github.com/sveltejs/svelte/issues/5555))
* Fix scoping of selectors with `:global()` and `~` sibling combinators ([#5499](https://github.com/sveltejs/svelte/issues/5499))
* Fix removal of `:host` selectors as unused when compiling to a custom element ([#5946](https://github.com/sveltejs/svelte/issues/5946))

## 3.32.1

* Warn when using `module` variables reactively, and close weird reactivity loophole ([#5847](https://github.com/sveltejs/svelte/pull/5847))
* Throw a parser error for `class:` directives with an empty class name ([#5858](https://github.com/sveltejs/svelte/issues/5858))
* Fix extraneous store subscription in SSR mode ([#5883](https://github.com/sveltejs/svelte/issues/5883))
* Don't emit update code for `class:` directives whose expression is not dynamic ([#5919](https://github.com/sveltejs/svelte/issues/5919))
* Fix type inference for derived stores ([#5935](https://github.com/sveltejs/svelte/pull/5935))
* Make parameters of built-in animations and transitions optional ([#5936](https://github.com/sveltejs/svelte/pull/5936))
* Make `SvelteComponentDev` typings more forgiving ([#5937](https://github.com/sveltejs/svelte/pull/5937))
* Fix `foreign` elements incorrectly disallowing `bind:this` ([#5942](https://github.com/sveltejs/svelte/pull/5942))

## 3.32.0

* Allow multiple instances of the same action on an element ([#5516](https://github.com/sveltejs/svelte/issues/5516))
* Support `foreign` namespace, which disables certain HTML5-specific behaviour and checks ([#5652](https://github.com/sveltejs/svelte/pull/5652))
* Support inline comment sourcemaps in code from preprocessors ([#5854](https://github.com/sveltejs/svelte/pull/5854))

## 3.31.2

* Rework SSR store handling to subscribe and unsubscribe as in DOM mode ([#3375](https://github.com/sveltejs/svelte/issues/3375), [#3582](https://github.com/sveltejs/svelte/issues/3582), [#3636](https://github.com/sveltejs/svelte/issues/3636))
* Fix error when removing elements that are already transitioning out ([#5789](https://github.com/sveltejs/svelte/issues/5789), [#5808](https://github.com/sveltejs/svelte/issues/5808))
* Fix duplicate content race condition with `{#await}` blocks and out transitions ([#5815](https://github.com/sveltejs/svelte/issues/5815))
* Deconflict variable names used for contextual actions ([#5834](https://github.com/sveltejs/svelte/issues/5834))

## 3.31.1

* Fix scrolling of element with resize listener by making the `<iframe>` have `z-index: -1` ([#5448](https://github.com/sveltejs/svelte/issues/5448))
* Fix location of automatically declared reactive variables ([#5749](https://github.com/sveltejs/svelte/issues/5749))
* Warn when using `className` or `htmlFor` attributes ([#5777](https://github.com/sveltejs/svelte/issues/5777))
* Fix checkbox `bind:group` in keyed `{#each}` where the array can be reordered ([#5779](https://github.com/sveltejs/svelte/issues/5779))
* Fix checkbox `bind:group` in nested `{#each}` contexts ([#5811](https://github.com/sveltejs/svelte/issues/5811))
* Add graphics roles as known ARIA roles ([#5822](https://github.com/sveltejs/svelte/pull/5822))
* Fix local transitions if a parent has a cancelled outro transition ([#5829](https://github.com/sveltejs/svelte/issues/5829))
* Support `use:obj.some.deep.function` as actions ([#5844](https://github.com/sveltejs/svelte/issues/5844))

## 3.31.0

* Use a separate `SvelteComponentTyped` interface for typed components ([#5738](https://github.com/sveltejs/svelte/pull/5738))

## 3.30.1

* Support consuming decoded sourcemaps as created by the `source-map` library's `SourceMapGenerator` ([#5722](https://github.com/sveltejs/svelte/issues/5722))
* Actually export `hasContext` ([#5726](https://github.com/sveltejs/svelte/issues/5726))

## 3.30.0

* Add a typed `SvelteComponent` interface ([#5431](https://github.com/sveltejs/svelte/pull/5431))
* Support spread into `<slot>` props ([#5456](https://github.com/sveltejs/svelte/issues/5456))
* Fix setting reactive dependencies which don't appear in the template to `undefined` ([#5538](https://github.com/sveltejs/svelte/issues/5538))
* Support preprocessor sourcemaps during compilation ([#5584](https://github.com/sveltejs/svelte/pull/5584))
* Fix ordering of elements when using `{#if}` inside `{#key}` ([#5680](https://github.com/sveltejs/svelte/issues/5680))
* Add `hasContext` lifecycle function ([#5690](https://github.com/sveltejs/svelte/pull/5690))
* Fix missing `walk` types in `svelte/compiler` ([#5696](https://github.com/sveltejs/svelte/pull/5696))

## 3.29.7

* Include `./register` in exports map ([#5670](https://github.com/sveltejs/svelte/issues/5670))

## 3.29.6

* Include `./package.json` in export map ([#5659](https://github.com/sveltejs/svelte/issues/5659))

## 3.29.5

* Fix `$$props` and `$$restProps` when compiling to a custom element ([#5482](https://github.com/sveltejs/svelte/issues/5482))
* Include an export map in `package.json` ([#5556](https://github.com/sveltejs/svelte/issues/5556))
* Fix function calls in `<slot>` props that use contextual values ([#5565](https://github.com/sveltejs/svelte/issues/5565))
* Fix handling aborted transitions in `{:else}` blocks ([#5573](https://github.com/sveltejs/svelte/issues/5573))
* Add `Element` and `Node` to known globals ([#5586](https://github.com/sveltejs/svelte/issues/5586))
* Fix `$$slots` when compiling to custom elements ([#5594](https://github.com/sveltejs/svelte/issues/5594))
* Fix internal `import`s so that we're exposing a valid ES module ([#5617](https://github.com/sveltejs/svelte/issues/5617))

## 3.29.4

* Fix code generation error with `??` alongside logical operators ([#5558](https://github.com/sveltejs/svelte/issues/5558))

## 3.29.3

* Hopefully actually republish with proper UMD build for use in the REPL

## 3.29.2

* Republish with proper UMD build for use in the REPL

## 3.29.1

* Fix compiler hanging on `<slot slot="...">` ([#5475](https://github.com/sveltejs/svelte/issues/5475))
* Fix types on `get` function in `svelte/store` ([#5483](https://github.com/sveltejs/svelte/pull/5483))
* Add missing `end` field on ASTs for non-top-level `<style>` elements ([#5487](https://github.com/sveltejs/svelte/pull/5487))
* Fix `{#if}` inside `{#await}` with destructuring ([#5508](https://github.com/sveltejs/svelte/issues/5508))
* Fix types on lifecycle hooks ([#5529](https://github.com/sveltejs/svelte/pull/5529))

## 3.29.0

* Support `<slot slot="...">` ([#2079](https://github.com/sveltejs/svelte/issues/2079))
* Fix unmounting components with a bidirectional transition with a delay ([#4954](https://github.com/sveltejs/svelte/issues/4954))
* Add types to `get` function in `svelte/store` ([#5269](https://github.com/sveltejs/svelte/pull/5269))
* Add a warning when a component looks like it's trying to use another component without beginning with a capital letter ([#5302](https://github.com/sveltejs/svelte/pull/5302))
* Add `EventSource` to known globals ([#5463](https://github.com/sveltejs/svelte/issues/5463))
* Fix compiler exception with `~`/`+` combinators and `{...spread}` attributes ([#5465](https://github.com/sveltejs/svelte/issues/5465))

## 3.28.0

* Add `{#key}` block for keying arbitrary content on an expression ([#1469](https://github.com/sveltejs/svelte/issues/1469))

## 3.27.0

* Add `|nonpassive` event modifier, explicitly passing `passive: false` ([#2068](https://github.com/sveltejs/svelte/issues/2068))
* Scope CSS selectors with `~` and `+` combinators ([#3104](https://github.com/sveltejs/svelte/issues/3104))
* Fix keyed `{#each}` not reacting to key changing ([#5444](https://github.com/sveltejs/svelte/issues/5444))
* Fix destructuring into store values ([#5449](https://github.com/sveltejs/svelte/issues/5449))
* Fix erroneous `missing-declaration` warning with `use:obj.method` ([#5451](https://github.com/sveltejs/svelte/issues/5451))

## 3.26.0

* Support `use:obj.method` as actions ([#3935](https://github.com/sveltejs/svelte/issues/3935))
* Support `_` as numeric separator ([#5407](https://github.com/sveltejs/svelte/issues/5407))
* Fix assignments to properties on store values ([#5412](https://github.com/sveltejs/svelte/issues/5412))
* Add special style scoping handling of `[open]` selectors on `<details>` elements ([#5421](https://github.com/sveltejs/svelte/issues/5421))
* Support `import.meta` in template expressions ([#5422](https://github.com/sveltejs/svelte/issues/5422))

## 3.25.1

* Fix specificity of certain styles involving a child selector ([#4795](https://github.com/sveltejs/svelte/issues/4795))
* Fix transitions that are parameterised with stores ([#5244](https://github.com/sveltejs/svelte/issues/5244))
* Fix scoping of styles involving child selector and `*` ([#5370](https://github.com/sveltejs/svelte/issues/5370))
* Fix destructuring which reassigns stores ([#5388](https://github.com/sveltejs/svelte/issues/5388))
* Fix `{#await}`s with no `{:catch}` getting stuck unresolved if the promise rejects ([#5401](https://github.com/sveltejs/svelte/issues/5401))

## 3.25.0

* Use `null` rather than `undefined` for coerced bound value of `<input type="number">` ([#1701](https://github.com/sveltejs/svelte/issues/1701))
* Expose object of which slots have received content in `$$slots` ([#2106](https://github.com/sveltejs/svelte/issues/2106))
* Correctly disallow using lifecycle hooks after synchronous component initialisation ([#4259](https://github.com/sveltejs/svelte/issues/4259), [#4899](https://github.com/sveltejs/svelte/issues/4899))
* Re-throw an unhandled rejection when an `{#await}` block with no `{:catch}` gets a rejection ([#5129](https://github.com/sveltejs/svelte/issues/5129))
* Add types to `createEventDispatcher` ([#5211](https://github.com/sveltejs/svelte/issues/5211))
* In SSR mode, do not automatically declare variables for reactive assignments to member expressions ([#5247](https://github.com/sveltejs/svelte/issues/5247))
* Include selector in message of `unused-css-selector` warning ([#5252](https://github.com/sveltejs/svelte/issues/5252))
* Fix using `<Namespaced.Component/>`s in child `{#await}`/`{#each}` contexts ([#5255](https://github.com/sveltejs/svelte/issues/5255))
* Fix using `<svelte:component>` in `{:catch}` ([#5259](https://github.com/sveltejs/svelte/issues/5259))
* Fix setting one-way bound `<input>` `value` to `undefined` when it has spread attributes ([#5270](https://github.com/sveltejs/svelte/issues/5270))
* Fix deep two-way bindings inside an `{#each}` involving a store ([#5286](https://github.com/sveltejs/svelte/issues/5286))
* Use valid XHTML for elements that are optimised and inserted with `.innerHTML` ([#5315](https://github.com/sveltejs/svelte/issues/5315))
* Fix reactivity of `$$props` in slot fallback content ([#5367](https://github.com/sveltejs/svelte/issues/5367))

## 3.24.1

* Prevent duplicate invalidation with certain two-way component bindings ([#3180](https://github.com/sveltejs/svelte/issues/3180), [#5117](https://github.com/sveltejs/svelte/issues/5117), [#5144](https://github.com/sveltejs/svelte/issues/5144))
* Fix reactivity when passing `$$props` to a `<slot>` ([#3364](https://github.com/sveltejs/svelte/issues/3364))
* Fix transitions on `{#each}` `{:else}` ([#4970](https://github.com/sveltejs/svelte/issues/4970))
* Fix unneeded invalidation of `$$props` and `$$restProps` ([#4993](https://github.com/sveltejs/svelte/issues/4993), [#5118](https://github.com/sveltejs/svelte/issues/5118))
* Provide better compiler error message when mismatched tags are due to autoclosing of tags ([#5049](https://github.com/sveltejs/svelte/issues/5049))
* Add `a11y-label-has-associated-control` warning ([#5074](https://github.com/sveltejs/svelte/pull/5074))
* Add `a11y-media-has-caption` warning ([#5075](https://github.com/sveltejs/svelte/pull/5075))
* Fix `bind:group` when using contextual reference ([#5174](https://github.com/sveltejs/svelte/issues/5174))

## 3.24.0

* Support nullish coalescing (`??`) and optional chaining (`?.`) operators ([#1972](https://github.com/sveltejs/svelte/i