svelte/CHANGELOG.md

Cybernetically enhanced web apps

# Svelte changelog

## 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/issues/1972))
* Support `import.meta` ([#4379](https://github.com/sveltejs/svelte/issues/4379))
* Fix only setting `<input>` values when they're changed when there are spread attributes ([#4418](https://github.com/sveltejs/svelte/issues/4418))
* Fix placement of `{@html}` when used at the root of a slot, at the root of a component, or in `<svelte:head>` ([#5012](https://github.com/sveltejs/svelte/issues/5012), [#5071](https://github.com/sveltejs/svelte/pull/5071))
* Fix certain handling of two-way bound `contenteditable` elements ([#5018](https://github.com/sveltejs/svelte/issues/5018))
* Fix handling of `import`ed value that is used as a store and is also mutated ([#5019](https://github.com/sveltejs/svelte/issues/5019))
* Do not display `a11y-missing-content` warning on elements with `contenteditable` bindings ([#5020](https://github.com/sveltejs/svelte/issues/5020))
* Fix handling of `this` in inline function expressions in the template ([#5033](https://github.com/sveltejs/svelte/issues/5033))
* Fix collapsing HTML with static content ([#5040](https://github.com/sveltejs/svelte/issues/5040))
* Prevent use of `$store` at compile time when top-level `store` has been shadowed ([#5048](https://github.com/sveltejs/svelte/issues/5048))
* Update `<select>` with one-way `value` binding when the available `<option>`s change ([#5051](https://github.com/sveltejs/svelte/issues/5051))
* Fix published `tweened` types so the `.set()` and `.update()` options are optional ([#5062](https://github.com/sveltejs/svelte/issues/5062))
* Fix contextual `bind:this` inside `{#each}` block ([#5067](https://github.com/sveltejs/svelte/issues/5067))
* Preprocess self-closing `<script>` and `<style>` tags ([#5080](https://github.com/sveltejs/svelte/issues/5080))
* Fix types for animation- and transition-related param objects so each param is optional ([#5083](https://github.com/sveltejs/svelte/pull/5083))

## 3.23.2

* Fix `bind:group` inside `{#each}` ([#3243](https://github.com/sveltejs/svelte/issues/3243))
* Don't crash when using an arrow function as a statement ([#4617](https://github.com/sveltejs/svelte/issues/4617))
* Deconflict `bind:this` variable ([#4636](https://github.com/sveltejs/svelte/issues/4636))

## 3.23.1

* Fix checkbox `bind:group` when multiple options have the same value ([#4397](https://github.com/sveltejs/svelte/issues/4397))
* Fix `bind:this` to the value of an `{#each}` block ([#4517](https://github.com/sveltejs/svelte/issues/4517))
* Fix reactivity when assigning to contextual `{#each}` variable ([#4574](https://github.com/sveltejs/svelte/issues/4574), [#4744](https://github.com/sveltejs/svelte/issues/4744))
* Fix binding to contextual `{#each}` values that shadow outer names ([#4757](https://github.com/sveltejs/svelte/issues/4757))
* Work around EdgeHTML DOM issue when removing attributes during hydration ([#4911](https://github.com/sveltejs/svelte/pull/4911))
* Throw CSS parser error when `:global()` does not contain a selector ([#4930](https://github.com/sveltejs/svelte/issues/4930))

## 3.23.0

* Update `<select>` with `bind:value` when the available `<option>`s change ([#1764](https://github.com/sveltejs/svelte/issues/1764))
* Add `muted` binding for media elements ([#2998](https://github.com/sveltejs/svelte/issues/2998))
* Fix inconsistencies when setting a two-way bound `<input>` to `undefined` ([#3569](https://github.com/sveltejs/svelte/issues/3569))
* Fix setting `<select multiple>` when there are spread attributes ([#4392](https://github.com/sveltejs/svelte/issues/4392))
* Fix let-less `<slot>` with context overflow ([#4624](https://github.com/sveltejs/svelte/issues/4624))
* Fix resize listening on certain older browsers ([#4752](https://github.com/sveltejs/svelte/issues/4752))
* Add `a11y-no-onchange` warning ([#4788](https://github.com/sveltejs/svelte/pull/4788))
* Fix `use:` actions being recreated when a keyed `{#each}` is reordered ([#4693](https://github.com/sveltejs/svelte/issues/4693))
* Fix `{@html}` when using tags that can only appear inside certain tags ([#4852](https://github.com/sveltejs/svelte/issues/4852))
* Fix reactivity when binding directly to `{#each}` context ([#4879](https://github.com/sveltejs/svelte/issues/4879))

## 3.22.3

* Support default values and trailing commas in destructuring `{#await}` ([#4560](https://github.com/sveltejs/svelte/issues/4560), [#4810](https://github.com/sveltejs/svelte/issues/4810))
* Fix handling of `tweened` store when set using `duration: 0` ([#4799](https://github.com/sveltejs/svelte/issues/4799), [#4846](https://github.com/sveltejs/svelte/issues/4846))
* Fix setting `value` attribute with `bind:group` and attribute spread ([#4803](https://github.com/sveltejs/svelte/issues/4803))
* Fix issue with compound `{#if}` block involving static condition, dynamic condition, and inline component ([#4840](https://github.com/sveltejs/svelte/issues/4840))
* Update a11y warnings per ARIA 1.2 working draft ([#4844](https://github.com/sveltejs/svelte/issues/4844))

## 3.22.2

* Fix compiler exception with `a11y-img-redundant-alt` and value-less `alt` attribute ([#4777](https://github.com/sveltejs/svelte/issues/4777))

## 3.22.1

* Fix compiler exception with `a11y-img-redundant-alt` and dynamic `alt` attribute ([#4770](https://github.com/sveltejs/svelte/issues/4770))

## 3.22.0

* Fix misaligned line numbers in source maps ([#3906](https://github.com/sveltejs/svelte/issues/3906))
* Make setting a `tweened` store using `duration: 0` instantly update the value ([#4399](https://github.com/sveltejs/svelte/issues/4399))
* Fix reactivity with imported values that are then mutated ([#4555](https://github.com/sveltejs/svelte/issues/4555))
* Fix contextual dynamic `bind:this` inside `{#each}` block ([#4686](https://github.com/sveltejs/svelte/issues/4686))
* Do not display a11y warning about missing `href` for `<a>` with `name` or `id` ([#4697](https://github.com/sveltejs/svelte/issues/4697))
* Disable infinite loop guard inside generators ([#4698](https://github.com/sveltejs/svelte/issues/4698))
* Display `a11y-invalid-attribute` warning for `href="javascript:..."` ([#4733](https://github.com/sveltejs/svelte/pull/4733))
* Implement `a11y-img-redundant-alt` warning ([#4750](https://github.com/sveltejs/svelte/pull/4750))
* Fix variable name conflict with component called `<Anchor>` ([#4768](https://github.com/sveltejs/svelte/issues/4768))

## 3.21.0

* Support dimension bindings in cross-origin environments ([#2147](https://github.com/sveltejs/svelte/issues/2147))
* Fix several related outro bugs ([#3202](https://github.com/sveltejs/svelte/issues/3202), [#3410](https://github.com/sveltejs/svelte/issues/3410), [#3685](https://github.com/sveltejs/svelte/issues/3685), [#4620](https://github.com/sveltejs/svelte/issues/4620), [#4630](https://github.com/sveltejs/svelte/issues/4630))
* Try using `globalThis` rather than `globals` for the benefit of non-Node servers and web workers ([#3561](https://github.com/sveltejs/svelte/issues/3561), [#4545](https://github.com/sveltejs/svelte/issues/4545))
* Support `{#await ... catch ...}` syntax shorthand ([#3623](https://github.com/sveltejs/svelte/issues/3623))
* Fix attaching of JS debugging comments to HTML comments ([#4565](https://github.com/sveltejs/svelte/issues/4565))
* Fix `<svelte:component/>` within `<slot/>` ([#4597](https://github.com/sveltejs/svelte/issues/4597))
* Fix bug with updating simple `{#if}` blocks ([#4629](https://github.com/sveltejs/svelte/issues/4629))
* Fix issues with `<input type="number">` updates ([#4631](https://github.com/sveltejs/svelte/issues/4631), [#4687](https://github.com/sveltejs/svelte/issues/4687))
* Prevent illegal attribute names ([#4648](https://github.com/sveltejs/svelte/issues/4648))
* Fix `{#if}` block directly within `<slot/>` ([#4703](https://github.com/sveltejs/svelte/issues/4703))

## 3.20.1

* Fix compiler regression with slots ([#4562](https://github.com/sveltejs/svelte/issues/4562))

## 3.20.0

* Allow destructuring in `{#await}` blocks ([#1851](https://github.com/sveltejs/svelte/issues/1851))
* Allow `<svelte:self>` to be used in a slot ([#2798](https://github.com/sveltejs/svelte/issues/2798))
* Expose object of unknown props in `$$restProps` ([#2930](https://github.com/sveltejs/svelte/issues/2930))
* Prevent passing named slots other than from the top level within a component ([#3385](https://github.com/sveltejs/svelte/issues/3385))
* Allow transitions and animations to work within iframes ([#3624](https://github.com/sveltejs/svelte/issues/3624))
* Fix initialising slot fallbacks when unnecessary ([#3763](https://github.com/sveltejs/svelte/issues/3763))
* Disallow binding directly to `const` variables ([#4479](https://github.com/sveltejs/svelte/issues/4479))
* Fix re-attaching event handlers on keyed `{#each}` blocks ([#4491](https://github.com/sveltejs/svelte/issues/4491))
* Fix updating keyed `{#each}` blocks with `{:else}` ([#4536](https://github.com/sveltejs/svelte/issues/4536), [#4549](https://github.com/sveltejs/svelte/issues/4549))
* Fix hydration of top-level content ([#4542](https://github.com/sveltejs/svelte/issues/4542))

## 3.19.2

* In `dev` mode, display a runtime warning when a component is passed an unexpected slot ([#1020](https://github.com/sveltejs/svelte/issues/1020), [#1447](https://github.com/sveltejs/svelte/issues/1447))
* In `vars` array, correctly indicate whether `module` variables are `mutated` or `reassigned` ([#3215](https://github.com/sveltejs/svelte/issues/3215))
* Fix spread props not updating in certain situations ([#3521](https://github.com/sveltejs/svelte/issues/3521), [#4480](https://github.com/sveltejs/svelte/issues/4480))
* Use the fallback content for slots if they are passed only whitespace ([#4092](https://github.com/sveltejs/svelte/issues/4092))
* Fix bitmask overflow for `{#if}` blocks ([#4263](https://github.com/sveltejs/svelte/issues/4263))
* In `dev` mode, check for unknown props even if the component has no writable props ([#4323](https://github.com/sveltejs/svelte/issues/4323))
* Exclude global variables from `$capture_state` ([#4463](https://github.com/sveltejs/svelte/issues/4463))
* Fix bitmask overflow for slots ([#4481](https://github.com/sveltejs/svelte/issues/4481))

## 3.19.1

* Do not treat modifications to `$$props` as updates to a store called `$props` ([#4368](https://github.com/sveltejs/svelte/issues/4368))
* Deconflict `value` parameter name used in contextual bindings ([#4445](https://github.com/sveltejs/svelte/issues/4445))
* Fix dev mode validation of `{#each}` blocks using strings ([#4450](https://github.com/sveltejs/svelte/issues/4450))

## 3.19.0

* Fix indirect bindings involving elements with spreads ([#3680](https://github.com/sveltejs/svelte/issues/3680))
* `$capture_state`/`$inject_state` now act on the component's entire state, rather than its props ([#3822](https://github.com/sveltejs/svelte/pull/3822))
* Warn when using `<Foo/>` and `Foo` is dynamic ([#4331](https://github.com/sveltejs/svelte/issues/4331))
* Display compilation warnings in `svelte/register` in dev mode ([#4364](https://github.com/sveltejs/svelte/issues/4364))
* Fix unneeded updating of keyed each blocks ([#4373](https://github.com/sveltejs/svelte/issues/4373))
* Throw runtime error in dev mode for non-array-like values in `{#each}` blocks ([#4408](https://github.com/sveltejs/svelte/issues/4408))

## 3.18.2

* Fix binding to module-level variables ([#4086](https://github.com/sveltejs/svelte/issues/4086))
* Improve parsing error messages when there is a pending unclosed tag ([#4131](https://github.com/sveltejs/svelte/issues/4131))
* Disallow attribute/prop names from matching two-way-bound names or `{shorthand}` attribute/prop names ([#4325](https://github.com/sveltejs/svelte/issues/4325))
* Improve performance of `flush()` by not using `.shift()` ([#4356](https://github.com/sveltejs/svelte/pull/4356))
* Permit reserved keywords as destructuring keys in `{#each}` ([#4372](https://github.com/sveltejs/svelte/issues/4372))
* Disallow reserved keywords in `{expressions}` ([#4372](https://github.com/sveltejs/svelte/issues/4372))
* Fix code generation error with precedence of arrow functions ([#4384](https://github.com/sveltejs/svelte/issues/4384))
* Fix event handlers that are dynamic via reactive declarations or stores ([#4388](https://github.com/sveltejs/svelte/issues/4388))
* Fix invalidation in expressions like `++foo.bar` ([#4393](https://github.com/sveltejs/svelte/issues/4393))

## 3.18.1

* Fix code generation error with adjacent inline and block comments ([#4312](https://github.com/sveltejs/svelte/issues/4312))
* Fix detection of unused CSS selectors that begin with a `:global()` but contain a scoped portion ([#4314](https://github.com/sveltejs/svelte/issues/4314))

## 3.18.0

* Fix infinite loop when instantiating another component during `onMount` ([#3218](https://github.com/sveltejs/svelte/issues/3218))
* Make autosubscribing to a nullish store a no-op ([#2181](https://github.com/sveltejs/svelte/issues/2181))

## 3.17.3

* Fix updating a `<slot>` inside an `{#if}` or other block ([#4292](https://github.com/sveltejs/svelte/issues/4292))
* Fix using RxJS observables in `derived` stores ([#4298](https://github.com/sveltejs/svelte/issues/4298))
* Add dev mode check to disallow duplicate keys in a keyed `{#each}` ([#4301](https://github.com/sveltejs/svelte/issues/4301))
* Fix hydration of `<title>` when starting from SSR-generated code with `hydratable: true` ([#4310](https://github.com/sveltejs/svelte/issues/4310))

## 3.17.2

* Fix removing attributes during hydration ([#1733](https://github.com/sveltejs/svelte/issues/1733))
* Disallow two-way binding to a variable declared by an `{#await}` block ([#4012](https://github.com/sveltejs/svelte/issues/4012))
* Allow access to `let:` variables in sibling attributes on slot root ([#4173](https://github.com/sveltejs/svelte/issues/4173))
* Fix `~=` and class selector matching against values separated by any whitespace characters ([#4242](https://github.com/sveltejs/svelte/issues/4242))
* Fix code generation for `await`ed expressions that need parentheses ([#4267](https://github.com/sveltejs/svelte/issues/4267))
* Preserve JavaScript comments from the original component source where possible ([#4268](https://github.com/sveltejs/svelte/issues/4268))
* Add some more known globals ([#4276](https://github.com/sveltejs/svelte/pull/4276))
* Correctly apply event modifiers to `<svelte:body>` events ([#4278](https://github.com/sveltejs/svelte/issues/4278))

## 3.17.1

* Only attach SSR mode markers to a component's `<head>` elements when compiling with `hydratable: true` ([#4258](https://github.com/sveltejs/svelte/issues/4258))

## 3.17.0

* Remove old `<head>` elements during hydration so they aren't duplicated ([#1607](https://github.com/sveltejs/svelte/issues/1607))
* Prevent text input cursor jumping in Safari with one-way binding ([#3449](https://github.com/sveltejs/svelte/issues/3449))
* Expose compiler version in dev events ([#4047](https://github.com/sveltejs/svelte/issues/4047))
* Don't run actions before their element is in the document ([#4166](https://github.com/sveltejs/svelte/issues/4166))
* Fix reactive assignments with destructuring and stores where the destructured value should be undefined ([#4170](https://github.com/sveltejs/svelte/issues/4170))
* Fix hydrating `{:else}` in `{#each}` ([#4202](https://github.com/sveltejs/svelte/issues/4202))
* Do not automatically declare variables in reactive declarations when assigning to a member expression ([#4212](https://github.com/sveltejs/svelte/issues/4212))
* Fix stringifying of attributes in SSR mode when there are spread attributes ([#4240](https://github.com/sveltejs/svelte/issues/4240))
* Only render one `<title>` in SSR mode when multiple components provide one ([#4250](https://github.com/sveltejs/svelte/pull/4250))

## 3.16.7

* Also apply actions in the order they're given along with other directives ([#2446](https://github.com/sveltejs/svelte/issues/2446), [#4156](https://github.com/sveltejs/svelte/pull/4156))
* Check whether a dynamic event handler is a function before calling it ([#4090](https://github.com/sveltejs/svelte/issues/4090))
* Correctly mark event handlers as dynamic when they involve an expression used in a `bind:` elsewhere ([#4155](https://github.com/sveltejs/svelte/pull/4155))

## 3.16.6

* Fix CSS specificity bug when encapsulating styles ([#1277](https://github.com/sveltejs/svelte/issues/1277))
* Apply directives in the order they're given ([#2446](https://github.com/sveltejs/svelte/issues/2446))
* Fix destructuring in `let:` directives ([#2751](https://github.com/sveltejs/svelte/issues/2751))
* Preserve whitespace around `<tspan>`s in `<svg>`s ([#3998](https://github.com/sveltejs/svelte/issues/3998))

## 3.16.5

* Better fix for cascading invalidations and fix some regressions ([#4098](https://github.com/sveltejs/svelte/issues/4098), [#4114](https://github.com/sveltejs/svelte/issues/4114), [#4120](https://github.com/sveltejs/svelte/issues/4120))

## 3.16.4

* Fix slots with props not propagating through to inner slots ([#4061](https://github.com/sveltejs/svelte/issues/4061))
* Fix noting autosubscribed stores as `referenced` in `vars` for tooling ([#4081](https://github.com/sveltejs/svelte/issues/4081))
* Fix cascading invalidations in certain situations ([#4094](https://github.com/sveltejs/svelte/issues/4094))

## 3.16.3

* Fix bitmask overflow when using slotted components ([#4077](https://github.com/sveltejs/svelte/issues/4077))
* Remove unnecessary `$$invalidate` calls from init block ([#4018](https://github.com/sveltejs/svelte/issues/4018))

## 3.16.2

* Handle slot updates when parent component has a bitmask overflow  ([#4078](https://github.com/sveltejs/svelte/pull/4078))

## 3.16.1

* Fix unused export warning for props used as stores ([#4021](https://github.com/sveltejs/svelte/issues/4021))
* Fix `{:then}` without resolved value containing `{#each}` ([#4022](https://github.com/sveltejs/svelte/issues/4022))
* Fix incorrect code generated with `loopGuardTimeout` ([#4034](https://github.com/sveltejs/svelte/issues/4034))
* Fix handling of bitmask overflow and globals ([#4037](https://github.com/sveltejs/svelte/issues/4037))
* Fix `{:then}` containing `{#if}` ([#4044](https://github.com/sveltejs/svelte/issues/4044))
* Fix bare `import`s in `format: 'cjs'` output mode ([#4055](https://github.com/sveltejs/svelte/issues/4050))
* Warn when using a known global as a component name ([#4070](https://github.com/sveltejs/svelte/issues/4070))

## 3.16.0

* Use bitmasks to track changes ([#3945](https://github.com/sveltejs/svelte/pull/3945))
* Fix heisenbug with component styles ([#3977](https://github.com/sveltejs/svelte/issues/3977))
* Do not warn about missing expected props for `export function foo() {}` ([#3954](https://github.com/sveltejs/svelte/issues/3954))
* Fix `context="module"` exports with the same name as an instance variable ([#3983](https://github.com/sveltejs/svelte/issues/3983))
* Fix binding to contextual values from `{#each}` blocks referring to global variables ([#3992](https://github.com/sveltejs/svelte/issues/3992))
* Use `requestAnimationFrame` callback argument for smoother transitions ([#4014](https://github.com/sveltejs/svelte/pull/4014))
* Fix `listen_dev` argument order ([#4016](https://github.com/sveltejs/svelte/pull/4016))

## 3.15.0

* Hide commented sections from preprocessors ([#3894](https://github.com/sveltejs/svelte/pull/3894))
* Add `seeking` and `ended` bindings to media elements ([#3650](https://github.com/sveltejs/svelte/pull/3650))
* Add `videoWidth` and `videoHeight` bindings to video elements ([#3927](https://github.com/sveltejs/svelte/pull/3927))
* Fix for dynamic event handlers ([#3934](https://github.com/sveltejs/svelte/pull/3934))
* Handle scale transforms when using the `flip` animation ([#3555](https://github.com/sveltejs/svelte/issues/3555))
* Fix some code generation bugs ([#3929](https://github.com/sveltejs/svelte/issues/3929), [#3939](https://github.com/sveltejs/svelte/issues/3939))
* Add `aria-hidden="true"` to objects generated when adding resize-listeners, to improve accessibility ([#3948](https://github.com/sveltejs/svelte/issues/3948))

## 3.14.1

* Deconflict block method names with other variables ([#3900](https://github.com/sveltejs/svelte/issues/3900))
* Fix entity encoding issue in text nodes with constant expressions ([#3911](https://github.com/sveltejs/svelte/issues/3911))
* Make code for unknown prop warnings compatible with older js engines ([#3914](https://github.com/sveltejs/svelte/issues/3914))

## 3.14.0

* Add `loopGuardTimeout` option that augments `for`/`while` loops to prevent infinite loops, primarily for use in the REPL ([#3887](https://github.com/sveltejs/svelte/pull/3887))
* Keep component bindings in sync when changed in reactive statements ([#3382](https://github.com/sveltejs/svelte/issues/3382))
* Update attributes before bindings ([#3857](https://github.com/sveltejs/svelte/issues/3857))
* Prevent variable naming conflict ([#3899](https://github.com/sveltejs/svelte/issues/3899))


## 3.13.0

* New structured code generation, which eliminates a number of edge cases and obscure bugs ([#3539](https://github.com/sveltejs/svelte/pull/3539))

Also:

* Fix `{#each}` context not shadowing outer scope when using `bind:` ([#1565](https://github.com/sveltejs/svelte/issues/1565))
* Fix edge cases in matching selectors against elements ([#1710](https://github.com/sveltejs/svelte/issues/1710))
* Fix several bugs related to interaction of `{...spread}` attributes with other features ([#2721](https://github.com/sveltejs/svelte/issues/2721), [#2916](https://github.com/sveltejs/svelte/issues/2916), [#3421](https://github.com/sveltejs/svelte/issues/3421), [#3681](https://github.com/sveltejs/svelte/issues/3681), [#3764](https://github.com/sveltejs/svelte/issues/3764), [#3790](https://github.com/sveltejs/svelte/issues/3790))
* Allow exiting a reactive block early with `break $` ([#2828](https://github.com/sveltejs/svelte/issues/2828))
* Fix binding to props that have been renamed with `export { ... as ... }` ([#3508](https://github.com/sveltejs/svelte/issues/3508))
* Fix application of style scoping class in cases of ambiguity ([#3544](https://github.com/sveltejs/svelte/issues/3544))
* Check attributes have changed before setting them to avoid image flicker ([#3579](https://github.com/sveltejs/svelte/pull/3579))
* Fix generating malformed code for `{@debug}` tags with no dependencies ([#3588](https://github.com/sveltejs/svelte/issues/3588))
* Fix generated code in specific case involving compound ifs and child components ([#3595](https://github.com/sveltejs/svelte/issues/3595))
* Fix `bind:this` binding to a store ([#3591](https://github.com/sveltejs/svelte/issues/3591))
* Use safer `HTMLElement` check before extending class ([#3608](https://github.com/sveltejs/svelte/issues/3608))
* Add `location` as a known global ([#3619](https://github.com/sveltejs/svelte/pull/3619))
* Support `{#await}` with `{:catch}` but no `{:then}` ([#3623](https://github.com/sveltejs/svelte/issues/3623))
* Clean up dead code emitted for `<slot/>`s ([#3631](https://github.com/sveltejs/svelte/issues/3631))
* Fix tracking of dependencies of compound assignments in reactive statements ([#3634](https://github.com/sveltejs/svelte/issues/3634))
* Flush changes in newly attached block when using `{#await}` ([#3660](https://github.com/sveltejs/svelte/issues/3660))
* Throw exception immediately when calling `createEventDispatcher()` after component instantiation ([#3667](https://github.com/sveltejs/svelte/pull/3667))
* Fix globals shadowing contextual template scope ([#3674](https://github.com/sveltejs/svelte/issues/3674))
* Fix `<svelte:window>` bindings to stores ([#3832](https://github.com/sveltejs/svelte/issues/3832))
* Deconflict generated var names with builtins ([#3724](https://github.com/sveltejs/svelte/issues/3724))
* Allow spring/tweened values to be initially undefined ([#3761](https://github.com/sveltejs/svelte/issues/3761))
* Warn if using `<svelte:options tag="...">` without `customElement: true` option ([#3782](https://github.com/sveltejs/svelte/pull/3782))
* Add `Event` to list of known globals ([#3810](https://github.com/sveltejs/svelte/pull/3810))
* Throw helpful error on empty CSS declaration ([#3801](https://github.com/sveltejs/svelte/issues/3801))
* Support `easing` param on `fade` transition ([#3823](https://github.com/sveltejs/svelte/pull/3823))
* Generate valid names from filenames with unicode characters ([#3845](https://github.com/sveltejs/svelte/issues/3845))
* Don't generate any code for markup-less components ([#2200](https://github.com/sveltejs/svelte/issues/2200))
* Deconflict with internal name `block` ([#3854](https://github.com/sveltejs/svelte/issues/3854))
* Set attributes before bindings, to prevent erroneous assignments to `input.files` ([#3828](https://github.com/sveltejs/svelte/issues/3828))
* Smarter unused CSS detection ([#3825](https://github.com/sveltejs/svelte/pull/3825))
* Allow dynamic event handlers ([#3040](https://github.com/sveltejs/svelte/issues/3040))
* Prevent erroneous `"undefined"` class name ([#3876](https://github.com/sveltejs/svelte/pull/3876))
* Prevent resetting of `src` attribute unless changed ([#3579](https://github.com/sveltejs/svelte/pull/3579))
* Prevent hydration of void element 'children' ([#3882](https://github.com/sveltejs/svelte/issues/3882))
* Hoist globals even if mentioned in `<script>` block ([#3745](https://github.com/sveltejs/svelte/pull/3745))


## 3.12.1

* Escape `@` symbols in props, again ([#3545](https://github.com/sveltejs/svelte/issues/3545))

## 3.12.0

* Fire events on `document` in development to facilitate dev tooling ([#3005](https://github.com/sveltejs/svelte/pull/3005))
* Remove old props when the keys in spread props are removed ([#2282](https://github.com/sveltejs/svelte/issues/2282))

## 3.11.0

* `$capture_state` and `$inject_state` HMR hooks in dev mode ([#3148](https://github.com/sveltejs/svelte/pull/3148))
* Allow unclosed tags inside if/each/etc blocks ([#2807](https://github.com/sveltejs/svelte/issues/2807))
* Invalidate unreferenced store values inside `<script>` ([#3537](https://github.com/sveltejs/svelte/issues/3537))
* Print `null` text when hydrating ([#3379](https://github.com/sveltejs/svelte/pull/3379))

## 3.10.1

* Preserve reactivity inside if block heads etc ([#3512](https://github.com/sveltejs/svelte/issues/3512))
* Fix store bindings inside each blocks ([#3455](https://github.com/sveltejs/svelte/issues/3455))
* Generate correct code for if-else blocks with static conditions ([#3505](https://github.com/sveltejs/svelte/issues/3505))
* Avoid generating unnecessary component update code ([#3526](https://github.com/sveltejs/svelte/issues/3526))
* Make `bind:currentTime` more reliable ([#3524](https://github.com/sveltejs/svelte/issues/3524))
* Prevent errors when setting spread props on SVG elements ([#3522](https://github.com/sveltejs/svelte/issues/3522))

## 3.10.0

* Add `blur` transition ([#3477](https://github.com/sveltejs/svelte/pull/3477))
* Prevent `<input type="number">` edge case with spread props ([#3426](https://github.com/sveltejs/svelte/issues/3426))
* Robustify cyclical dependency detection, improve errors ([#3459](https://github.com/sveltejs/svelte/issues/3459))

## 3.9.2

* Fix handling of additional @-rules in style blocks ([#2995](https://github.com/sveltejs/svelte/pull/2995))
* Fix if blocks with complex but static conditions ([#3447](https://github.com/sveltejs/svelte/issues/3447))

## 3.9.1

* Only update style properties if necessary ([#3433](https://github.com/sveltejs/svelte/issues/3433))
* Only update if/await blocks if necessary ([#2355](https://github.com/sveltejs/svelte/issues/2355))
* Set context correctly inside await blocks ([#2443](https://github.com/sveltejs/svelte/issues/2443))
* Handle `!important` inline styles ([#1834](https://github.com/sveltejs/svelte/issues/1834))
* Make index references reactive in event handlers inside keyed each blocks ([#2569](https://github.com/sveltejs/svelte/issues/2569))

## 3.9.0

* Support `is` attribute on elements, with a warning ([#3182](https://github.com/sveltejs/svelte/issues/3182))
* Handle missing slot prop ([#3322](https://github.com/sveltejs/svelte/issues/3322))
* Don't set undefined/null input values, unless previous value exists ([#1233](https://github.com/sveltejs/svelte/issues/1233))
* Fix style attribute optimisation bailout ([#1830](https://github.com/sveltejs/svelte/issues/1830))

## 3.8.1

* Set SVG namespace for slotted elements ([#3321](https://github.com/sveltejs/svelte/issues/3321))

## 3.8.0

* Add `self` event modifier ([#3372](https://github.com/sveltejs/svelte/issues/3372))
* Generate valid code when spreading literal ([#3185](https://github.com/sveltejs/svelte/issues/3185))
* Coerce tag values to string before checking equality ([#2290](https://github.com/sveltejs/svelte/issues/2290))

## 3.7.1

* Assume `let` variables are dynamic for slots ([#3354](https://github.com/sveltejs/svelte/issues/3354))
* Allow transition functions to return nothing ([#2246](https://github.com/sveltejs/svelte/pull/2246))

## 3.7.0

* Disable warnings via `svelte-ignore` comments ([#3351](https://github.com/sveltejs/svelte/pull/3351))
* Throw if `$` or `$$...` is referenced as global ([#3272](https://github.com/sveltejs/svelte/issues/3272))
* Remount HTML tags correctly ([#3329](https://github.com/sveltejs/svelte/pull/3329))
* Treat data attributes like other attributes ([#3337](https://github.com/sveltejs/svelte/issues/3337))

## 3.6.11

* Handle reassigned RxJS observables ([#3304](https://github.com/sveltejs/svelte/issues/3304))
* Remove commas from HTMLified attributes with multiple chunks ([#3341](https://github.com/sveltejs/svelte/issues/3341))
* Prevent `class` on element with scoped styles from rendering as `undefined` ([#3283](https://github.com/sveltejs/svelte/issues/3283))
* Allow references to index in key expression ([#3274](https://github.com/sveltejs/svelte/issues/3274))
* Mark attribute selectors as used if corresponding binding exists ([#3281](https://github.com/sveltejs/svelte/issues/3281))
* Preserve `async`/`*` when hoisting functions ([#3179](https://github.com/sveltejs/svelte/issues/3179))
* Make `raf` a noop on server ([#3324](https://github.com/sveltejs/svelte/issues/3324))
* Prevent erroneous a11y warning for image input with alt attribute ([#3331](https://github.com/sveltejs/svelte/issues/3331))
* Add several well-known globals ([#3316](https://github.com/sveltejs/svelte/pull/3316))

## 3.6.10

* Use `change` event for file inputs ([#3226](https://github.com/sveltejs/svelte/issues/3226))
* Always fire reactive declarations with `$$props` ([#3286](https://github.com/sveltejs/svelte/issues/3286))
* More conservative spread prop updates ([#3289](https://github.com/sveltejs/svelte/issues/3289))
* Quote props if necessary in SSR mode ([#3312](https://github.com/sveltejs/svelte/issues/3312))

## 3.6.9

* Always update derived stores with a derived input whose value does not change ([#3191](https://github.com/sveltejs/svelte/issues/3191))

## 3.6.8

* Preserve global keyframes that don't match local elements ([#3228](https://github.com/sveltejs/svelte/issues/3228))
* Fix spread/`class:` combination ([#3242](https://github.com/sveltejs/svelte/pull/3242))
* Never scope `:root` selector ([#3250](https://github.com/sveltejs/svelte/pull/3250))
* Prevent trailing commas in function arguments ([#3255](https://github.com/sveltejs/svelte/pull/3260))

## 3.6.7

* Prevent corruption of outro callbacks with nested keyed each blocks ([#3209](https://github.com/sveltejs/svelte/pull/3209))
* Prevent cursor jumping in bound input in Safari ([#3199](https://github.com/sveltejs/svelte/issues/3199))
* Make resize listener object unfocusable ([#3206](https://github.com/sveltejs/svelte/issues/3206))

## 3.6.6

* Prevent dynamic components being detached twice ([#3113](https://github.com/sveltejs/svelte/issues/3113), [#2086](https://github.com/sveltejs/svelte/issues/2086))

## 3.6.5

* Handle RxJS-style observables with `get` ([#3153](https://github.com/sveltejs/svelte/issues/3153))
* Pass `let` values to bindings ([#3140](https://github.com/sveltejs/svelte/issues/3140))
* Escape `@` symbols in props ([#3173](https://github.com/sveltejs/svelte/issues/3173))
* Scale crossfaded elements ([#3175](https://github.com/sveltejs/svelte/pull/3175))

## 3.6.4

* Run `onMount` functions in correct order, and before initial `afterUpdate` functions ([#2281](https://github.com/sveltejs/svelte/issues/2281))
* Fix code transformation for shorthand methods ([#2906](https://github.com/sveltejs/svelte/issues/2906))
* Fix assignments in inline functions ([#3038](https://github.com/sveltejs/svelte/issues/3038))

## 3.6.3

* Fix await block mounting inside removed if block ([#1496](https://github.com/sveltejs/svelte/issues/1496))
* Update when element references are removed ([#2034](https://github.com/sveltejs/svelte/issues/2034))
* Don't attempt to serialize non-string values in server-rendered bindings ([#2135](https://github.com/sveltejs/svelte/issues/2135))
* Recognise dependencies in function expressions ([#2693](https://github.com/sveltejs/svelte/issues/2693))
* Scope pseudo-class selectors without class/type ([#1705](https://github.com/sveltejs/svelte/issues/1705))
* Allow nested at-rules ([#3135](https://github.com/sveltejs/svelte/issues/3135))
* Allow attributes to contain `=` characters ([#3149](https://github.com/sveltejs/svelte/pull/3149))

## 3.6.2

* Fix placement of each-else block ([#2917](https://github.com/sveltejs/svelte/issues/2917))
* Make context accessible to `bind:this` ([#2806](https://github.com/sveltejs/svelte/issues/2806))
* Pass hoisted values to slots ([#2586](https://github.com/sveltejs/svelte/issues/2586))

## 3.6.1

* Fix escaping of `@` in dev mode debug filename ([#3114](https://github.com/sveltejs/svelte/pull/3114))

## 3.6.0

* Add `innerHTML` and `textContent` bindings for `contenteditable` elements ([#2996](https://github.com/sveltejs/svelte/pull/2996))
* Fix destructuring assignments where targets are member expressions ([#3092](https://github.com/sveltejs/svelte/issues/3092))
* Deconflict with used globals ([#2963](https://github.com/sveltejs/svelte/pull/2963))
* Always run `onDestroy` functions, not just for detaching components ([#3058](https://github.com/sveltejs/svelte/issues/3058))
* Fix scope analysis around catch clauses ([#3064](https://github.com/sveltejs/svelte/issues/3064))
* Add error constructors to known globals ([#3064](https://github.com/sveltejs/svelte/issues/3064))
* Always bail out of hoisting on encountering local state in function definition ([#3044](https://github.com/sveltejs/svelte/issues/3044))
* Fix incorrect merging of top-level text nodes ([#3027](https://github.com/sveltejs/svelte/issues/3027))
* Handle removal of components in each blocks without props ([#3035](https://github.com/sveltejs/svelte/issues/3035))
* Only call subscriber once when resubscribing to a store ([#3022](https://github.com/sveltejs/svelte/issues/3022))
* Check for existence of dynamic component before introing ([#3054](https://github.com/sveltejs/svelte/issues/3054))
* Sanitize names of bubbled event handlers ([#2923](https://github.com/sveltejs/svelte/issues/2923))


## 3.5.4

* Preserve whitespace at the boundaries of `{#each}` blocks ([#713](https://github.com/sveltejs/svelte/issues/713))
* Fix dynamic `bind:this` on components ([#2333](https://github.com/sveltejs/svelte/issues/2333))
* Fix binding to values in a component when it uses `$$props` ([#2725](https://github.com/sveltejs/svelte/issues/2725))
* Fix parsing ambiguous HTML entities ([#3071](https://github.com/sveltejs/svelte/pull/3071))

## 3.5.3

* Don't double-destroy keyed each blocks with outros ([#3055](https://github.com/sveltejs/svelte/issues/3055))

## 3.5.2

* Prevent duplicated outros causing errors ([#3001](https://github.com/sveltejs/svelte/issues/3001))
* Fix automatic name generation ([#2843](https://github.com/sveltejs/svelte/issues/2843))
* Fix .d.ts stubs ([#3009](https://github.com/sveltejs/svelte/pull/3009))
* Don't strip non-breaking spaces ([#3014](https://github.com/sveltejs/svelte/issues/3014))
* Fix `requestAnimationFrame` context ([#2933](https://github.com/sveltejs/svelte/issues/2933))
* Allow space before attribute value ([#3026](https://github.com/sveltejs/svelte/issues/3026))
* Remove null/undefined attri