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Patch Changes

#10815 86613d5 Thanks @WaterWhisperer! - Fixed a parser panic reported in #10708: Biome now recovers when unsupported CSS Modules @value rules or scoped @keyframes names end at EOF.
#10534 da9b403 Thanks @Mokto! - Fixed noUnusedVariables false positives in Svelte files: Svelte store subscriptions ($store references in templates now keep the underlying store binding from being flagged), and $bindable() props that are only written to in the script block (write-only is intentional for bindable props) are no longer reported as unused.
#10827 098ba41 Thanks @Aqu1bp! - Fixed #10698: The noUnsafeOptionalChaining rule now reports unsafe optional chains wrapped in TypeScript as, satisfies, type assertion, and instantiation expressions, such as new (value?.constructor as Constructor)().
#10773 3c6513d Thanks @otkrickey! - Fixed #10772: useVueValidVOn no longer reports a missing handler for v-on directives using a verb modifier (.stop / .prevent) without an expression, e.g. <div @click.stop></div>. The rule also accepts the arg-less object syntax <div v-on="$listeners"></div> instead of reporting a missing event name.
#10721 d83c66b Thanks @minseong0324! - Improved type-aware lint rule inference for built-in globals and indexed function calls. Biome now resolves Error(...), new Error(...), optional Error#stack, and calls through indexed function values such as handlers[0]() more accurately.
#10865 6450276 Thanks @ematipico! - Fixed #10845. Biome Language Server no longer goes in deadlock when the scanner is enabled.
#10853 93d8e53 Thanks @Netail! - Fixed #10840: Astro shorthand attribute syntax is now correctly being parsed from embedded nodes.
#10820 bba3092 Thanks @JamBalaya56562! - Fixed #10619: noProcessEnv now also reports computed (bracket) member access. Previously only dot access was checked, so process["env"] and env["NODE_ENV"] (where env is imported from node:process) were missed. Both static and computed accesses are now reported.
#10835 3447b2f Thanks @dyc3! - Fixed #10824: useDomQuerySelector now supports an ignore option for receiver identifiers that should not be reported.
#10875 b12e486 Thanks @dyc3! - Fixed #10795: --profile-rules now reports timings for each plugin separately as plugin/<pluginName>, matching the naming used by plugin suppressions, instead of aggregating all plugins under a single plugin/plugin entry.
#10877 d6bc447 Thanks @ematipico! - Fixed biome-zed#164: Biome no longer inserts stray whitespace when format-on-type runs after closing delimiters such as ), ], and }.
#10867 a21463e Thanks @dyc3! - Fixed #10864: Biome no longer crashes when checking or linting HTML files with unquoted attribute values such as <textarea rows=4></textarea>.

`v2.5.2`

Patch Changes

#10595 f458028 Thanks @pkallos! - Added the option ignoreBooleanCoercion to useNullishCoalescing. When enabled, Biome ignores || and ||= used inside a Boolean() call, where coalescing on falsy values is intentional.
#10798 4a32b63 Thanks @pkallos! - Added the option ignorePrimitives to useNullishCoalescing. When enabled, Biome ignores ||, ||=, and ternary expressions whose non-nullish operands are all primitives the option opts out of. Use true to ignore all primitives, or an object selecting string, number, boolean, or bigint.
#10545 f3d4c00 Thanks @Mokto! - Added the new nursery rule noSvelteUnnecessaryStateWrap, which reports unnecessary $state() wrapping of classes from svelte/reactivity that are already reactive.
```
<script>
import { SvelteMap } from "svelte/reactivity";
const map = $state(new SvelteMap()); // redundant
</script>
```
#10752 f62fb8b Thanks @ematipico! - Fixed #10739. Now the rule useValidAutocomplete correctly flags the autoComplete attribute.
#10796 f1b3ab2 Thanks @ematipico! - Fixed #10768. Improved the performance of the Biome Language Server by cancelling certain in-flight operations when there are fast updates.
#10719 aa649b5 Thanks @minseong0324! - Fixed noMisleadingReturnType false positive on returns that use a widening type assertion: "a" as string is no longer reported as misleading. The rule now also reports a literal-pinning assertion such as false as false, matching the existing as const behavior.
```
// No longer flagged (returns are `string`):
function getValue(b: boolean): string {
  if (b) return "a" as string;
  return "b" as string;
}

// Now also reported, like `as const` (returns `false`):
function isReady(): boolean {
  return false as false;
}
```
#10678 8f073a7 Thanks @PranavAchar01! - Fixed #7718: Biome now correctly parses CSS nesting selectors when & appears as a trailing sub-selector after a type selector, e.g. h1& { color: red; }.
#10756 5ec965a Thanks @denbezrukov! - Fixed CSS formatter output for selector lists with allowWrongLineComments and // comments after a selector comma. Biome now keeps the selector before the line comment inline instead of breaking it across descendant combinators.
```
-.powerPathNavigator
-  .helm
-  button.pressedButton, // pressed
+.powerPathNavigator .helm button.pressedButton, // pressed
 .powerPathNavigator .helm button:active:not(.disabledButton) {
 }
```
#10757 6232fcd Thanks @PranavAchar01! - Fixed #8269: the CSS parser now accepts Tailwind @variant and @utility names that start with a digit, such as the 2xl breakpoint.
```
@&#8203;utility container {
  @&#8203;variant 2xl {
    max-width: 1400px;
  }
}
```
#10777 575ced6 Thanks @WaterWhisperer! - Fixed an issue reported in #10708: the GitLab reporter now handles --verbose diagnostics filtering correctly.
#10281 0efe244 Thanks @Zelys-DFKH! - Fixed a bug where GritQL patterns rejected positional (unkeyed) arguments.
#10758 e36fd8a Thanks @henrybrewer00-dotcom! - Fixed #10697: The formatter no longer removes the parentheses around an await or yield expression used as the target of a TypeScript instantiation expression. For example, (await makeFactory)<Value> is no longer reformatted to await makeFactory<Value>, which would change the meaning of the code.

#10586 3617094 Thanks @IxxyDev! - Fixed #9568: noFloatingPromises no longer reports a false positive when calling an overloaded function and the selected overload does not return a promise.

function bestEffort(cb: () => Promise<number>): Promise<number>;
function bestEffort(cb: () => number): number;
function bestEffort(
  cb: () => number | Promise<number>,
): Promise<number> | number {
  return cb() as Promise<number> | number;
}

// This resolves to the second overload, which returns `number`, so it is no
// longer flagged as a floating promise.
bestEffort(() => 42);

#10766 7aff4c1 Thanks @JamBalaya56562! - Fixed #2862: noInteractiveElementToNoninteractiveRole no longer reports custom elements (a tag name containing a dash, e.g. <my-button role="img" />). Per the W3C HTML-ARIA specification, a custom element may be given any role or none.
#10680 771daa4 Thanks @WaterWhisperer! - Fixed #10635: Biome now recognizes chained
table tests such as test.concurrent.each() and it.concurrent.each() as test calls, fixing
noMisplacedAssertion false positives and improving formatting for those test declarations.
#10759 34570b5 Thanks @henrybrewer00-dotcom! - Fixed #10636: noStaticElementInteractions no longer reports a false positive for event handlers on Svelte special elements such as <svelte:window>, <svelte:document>, and <svelte:body>. These are not real DOM elements, so they are now ignored by the rule.
#10741 bd2364e Thanks @JamBalaya56562! - Fixed #6686: the rage command now respects the --config-path option and the BIOME_CONFIG_PATH environment variable when loading the Biome configuration. Previously it always used the default configuration resolution and reported the configuration as Not set when no biome.json existed in the working directory.
#10763 2c3e82d Thanks @Aqu1bp! - Fixed #10742: noSolidDestructuredProps now reports destructured props in Solid function components and JSX children.
#10606 a4cc4ab Thanks @Mokto! - Fixed false positives in noUnusedImports, noUnusedVariables, and useImportType for Svelte components that use both a <script module> and a <script> block. The two blocks compile to a single module and share a top-level scope, so a binding (import, function, or variable) declared in one block and used only in the other is no longer reported as unused.
#10767 36d5aa7 Thanks @otkrickey! - Fixed #10754: useVueValidVBind no longer reports the Vue 3.4+ same-name shorthand as missing a value. :foo and v-bind:foo are now accepted as equivalent to :foo="foo", while v-bind, v-bind:[dynamicArg], and :[dynamicArg] without a value continue to be reported.
#10775 a918af0 Thanks @WaterWhisperer! - Fixed an issue reported in #10708: biome rage didn't detect running Biome daemon pipes on Windows.
#10730 5a2e65b Thanks @dinocosta! - Fixed an issue where Biome was resolving the well-known Zed settings file from the wrong location on macOS and Windows.
#10807 d97fffe Thanks @ematipico! - Fixed an issue where .scss files were incorrectly analyzed when running biome check.
#10672 53c6efc Thanks @ematipico! - Fixed a bug where Biome incorrectly formatted snippets that have parsing errors.
#10719 aa649b5 Thanks @minseong0324! - Fixed useAwaitThenable false positive when awaiting a custom thenable that is not the global Promise. A value with a callable then member is now recognized as awaitable.
```
interface Thenable<T> {
  then(onfulfilled: (value: T) => void): void;
}
declare const t: Thenable<number>;
async function f() {
  await t;
}
```
#10734 4396496 Thanks @BangDori! - Fixed #10708: biome migrate now preserves trivia when migrating the deprecated recommended option to preset.
#10683 ae31a00 Thanks @Netail! - Fixed #10657 #10671 #10661 #10637 #10718: HTML rules now correctly handle dynamic attributes.
#10746 54e8239 Thanks @ematipico! - Fixed an issue where noUndeclaredClasses didn't correctly detect styles defined inside the Astro directive is:global.
#10770 dd1429c Thanks @ematipico! - Improved the Biome Language Server DX by orchestrating certain operations, so that they won't block the editor during typing. This improvement is more visible in large documents.
#10473 d9b5133 Thanks @Mokto! - Improved noUnusedImports, noUnusedVariables, noUnusedFunctionParameters, and useImportType for Svelte, Vue, and Astro files (with html.experimentalFullSupportEnabled). Bindings used only in the template — including component tags, attribute interpolations, directives, bind: shorthand, and snippet parameters — are no longer reported as unused, while genuinely unused ones still are.
#10796 f1b3ab2 Thanks @ematipico! - Fixed an issue where the Biome Language Server didn't enable project or type-aware lint rules, even when they were explicitly enabled.
#10746 54e8239 Thanks @ematipico! - Fixed an issue where noUndeclaredClasses didn't detect styles declared inside HTML documents.
#10774 bde945b Thanks @pattrickrice! - Fixed #10268 where a race condition resulted in internal errors such as: The file biome.json does not exist in the workspace.

`v2.5.1`

Patch Changes

#10722 f8a303d Thanks @denbezrukov! - Fixed CSS formatter output for comments between import media queries.

-@&#8203;import url("print.css") print,
-/* comment */
-screen;
+@&#8203;import url("print.css") print, /* comment */ screen;

#10738 9fdc560 Thanks @JamBalaya56562! - Fixed #9899: the json and json-pretty reporters now escape backslashes in a diagnostic's location.path. Previously, paths containing backslashes (such as Windows-style paths) were emitted unescaped, producing invalid JSON.
```
-    "path": "src\account\setup-passkey.tsx",
+    "path": "src\\account\\setup-passkey.tsx",
```
#10626 5f837df Thanks @tom-groves! - Fixed #10625: biome migrate no longer emits an invalid trailing comma when a renamed rule (such as noConsoleLog → noConsole) is the last member of its rule group. Previously this produced malformed output that aborted the migration of a strict-JSON biome.json with a parsing error.
#10535 c245f9d Thanks @Mokto! - Fixed a false positive in noUnusedVariables for Svelte files where variables referenced inside {@html expr} blocks were incorrectly reported as unused.
#10668 a0f197e Thanks @Netail! - The biome init command has been updated to include a more up-to-date URL to the first-party extensions page.
#10667 d8c3e87 Thanks @Netail! - Fixed #10664: useErrorCause now correctly detects a shorthand property.
#10696 ef2373f Thanks @ematipico! - Fixed #9566. Improved how the Biome Language Server loads multiple configuration files inside a workspace.
#10705 4ccb410 Thanks @ematipico! - Fixed #10652. Biome plugins are now properly filtered when using --only and --skip flags.
#10669 aa0a6eb Thanks @Netail! - Fixed #10651: useInlineScriptId now correctly trims trivia to detect if an id attribute has been set.
#10689 844b1be Thanks @ematipico! - Fixed #10658. The issue was caused by the "Go-to definition" editor feature, which was enabled by default. The feature is now disabled by default. To work, the feature triggers the scanner to build the module graph. This caused memory leak issues in cases where Biome starts in the home directory to modify files.

If you relied on this new feature, you must now turn on using the [editor settings] of the extension e.g. Zed and VSCode.
#10695 043fbb5 Thanks @ematipico! - Fixed #10674. Biome now throws an error when the field level is missing from a rule option.
#10712 5941df2 Thanks @Conaclos! - Improved the diagnostic and the documentation of useFlatMap.
#10615 23814f1 Thanks @qwertycxz! - Improved the DX the JSON schema when it's used by certain code editors like VSCode.
#10688 ec69489 Thanks @ematipico! - Fixed a bug where the Biome Daemon did not correctly shut down when the editor was closed during an in-progress operation, especially while scanning.
#10701 6c2e0d7 Thanks @ematipico! - Fixed #10694. The Biome Language Server no longer prints an error when the user hovers a variable imported from node_modules.
#10681 888515b Thanks @Conaclos! - Fixed useExportType that reported useless details in some diagnostics.
#10220 3694a13 Thanks @theBGuy! - Fixed useAnchorContent false positive for <a> elements used as render prop values (e.g. render={<a href="..." />}), a pattern where the receiving component renders its children inside the anchor element.
#10702 98823fb Thanks @ematipico! - Fixed #10612. The Biome parser now correctly parses processing instructions. The following SVG doesn't throw errors anymore:
```
<?xml version="1.0" encoding="UTF-8" ?>

<svg></svg>
```

`v2.5.0`

Minor Changes

#9539 f0615fd Thanks @ematipico! - Added a new reporter called concise. When --reporter=concise is passed the commands format, lint, check and ci, the diagnostics are printed in a compact manner:

! index.ts:2:10: lint/correctness/noUnusedImports: Several of these imports are unused.
! main.ts:9:7: lint/correctness/noUnusedVariables: This variable f is unused.
× index.ts:8:5: lint/suspicious/noImplicitAnyLet: This variable implicitly has the any type.
× main.ts:2:10: lint/suspicious/noRedeclare: Shouldn't redeclare 'z'. Consider to delete it or rename it.

#9495 2056b23 Thanks @aviraldua93! - Added the useKeyWithClickEvents a11y lint rule for HTML files (.html, .vue, .svelte, .astro). This is a port of the existing JSX rule. The rule enforces that elements with an onclick handler also have at least one keyboard event handler (onkeydown, onkeyup, or onkeypress) to ensure keyboard accessibility.

Inherently keyboard-accessible elements (<a>, <button>, <input>, <select>, <textarea>, <option>) are excluded, as are elements hidden from assistive technologies (aria-hidden) or with role="presentation" / role="none".
```

<div onclick="handleClick()">Click me</div>


<div onclick="handleClick()" onkeydown="handleKeyDown()">Click me</div>


<button onclick="handleClick()">Submit</button>
```
#9152 9ec8500 Thanks @ematipico! - Added new nursery lint rule noUndeclaredClasses for HTML, JSX, and SFC files (Vue, Astro, Svelte). The rule detects CSS class names used in class="..." (or className) attributes that are not defined in any <style> block or linked stylesheet reachable from the file.
```

<html>
  <head>
    <style>
      .button {
        color: blue;
      }
    </style>
  </head>
  <body>
    <div class="button typo"></div>
  </body>
</html>
```
#9152 9ec8500 Thanks @ematipico! - Added new nursery lint rule noUnusedClasses for CSS. The rule detects CSS class selectors that are never referenced in any HTML or JSX file that imports the stylesheet. This is a project-domain rule that requires the module graph.
```
/* styles.css — .ghost is never used in any importing file */
.button {
  color: blue;
}
.ghost {
  color: red;
}
```
```
/* App.jsx */
import "./styles.css";
export default () => <div className="button" />;
```
#9546 6567efa Thanks @nhedger! - Added a biome upgrade command for standalone installations. It upgrades Homebrew installs with brew upgrade biome, updates manually installed binaries from the latest GitHub release, and tells npm users to upgrade with their package manager instead.

#9716 701767a Thanks @faizkhairi! - Added the HTML version of the useHeadingContent rule. The rule now enforces that heading elements (h1-h6) have content accessible to screen readers in HTML, Vue, Svelte, and Astro files.

<!-- Invalid: empty heading -->
<h1></h1>

<!-- Invalid: heading hidden from screen readers -->
<h1 aria-hidden="true">invisible content</h1>

<!-- Valid: heading with text content -->
<h1>heading</h1>

<!-- Valid: heading with accessible name -->
<h1 aria-label="Screen reader content"></h1>

#9582 f437ef8 Thanks @rahuld109! - Added the HTML version of the useKeyWithMouseEvents rule. The rule now enforces that onmouseover is accompanied by onfocus and onmouseout is accompanied by onblur in HTML, Vue, Svelte, and Astro files.
```

<div onmouseover="handleMouseOver()"></div>


<div onmouseover="handleMouseOver()" onfocus="handleFocus()"></div>
```
#9275 1fdbcee Thanks @ff1451! - Added the new assist action useSortedTypeFields, which sorts the fields of GraphQL object types, interface types and input object types alphabetically, e.g. name, age, id becomes age, id, name.
#10561 78075b7 Thanks @Conaclos! - Added a new style option to useExportType,
which enforces a style for exporting types.
This is the same option as the one provided by useImportType.
#8987 d16e32b Thanks @DerTimonius! - Ported the useValidAnchor rule to HTML. This rule enforces that all anchors are valid and that they are navigable elements.
#9533 4d251d4 Thanks @ematipico! - The init command now prints the Biome logo.
#10069 0eb9310 Thanks @Netail! - Added the HTML lint rule noStaticElementInteractions, which enforces that static, visible elements (such as <div>) that have click handlers use the valid role attribute.

Invalid:
```
<div onclick="myFunction()"></div>
```
#9134 2a43488 Thanks @ematipico! - Added the assist action useSortedPackageJson.

This action organizes package.json fields according to the same conventions as the popular sort-package-json tool.
#9309 7daa18b Thanks @Bertie690! - The allowDoubleNegation option has been added to noImplicitCoercions to allow ignoring double negations inside code.

With the option enabled, the following example is considered valid and is ignored by the rule:
```
const truthy = !!value;
```
#9700 894f3fb Thanks @ematipico! - The Biome Language server now supports the "go-to definition" feature.

When the cursor of the mouse is hovering an entity (variable, CSS class, type, etc.), and the command CTRL + click is triggered, the editor jumps to where this entity is defined, if the language server can find it.

Here's what Biome is able to resolve:
- Variables and types used in JavaScript modules, defined in t

✂ Note

PR body was truncated to here.

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