# Biome changelog

> One toolchain for web projects — a formatter and linter for JavaScript, TypeScript, JSX, CSS and JSON.

- Vendor: Biome
- Category: Developer Tools
- Official site: https://biomejs.dev
- Tracked by: What's New (https://whatsnew.fyi/product/biome)
- Harvested from: GitHub (biomejs/biome)
- Entries below: 25 (newest first)

What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog.

## Releases

### 2.5.6 — Biome CLI v2.5.6

- Date: 2026-07-28
- Version: 2.5.6
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.6
- Permalink: https://whatsnew.fyi/product/biome/releases/2.5.6

- **fixed** — Fixed a performance regression in noMisusedPromises that caused type inference to run repeatedly while linting a file
- **fixed** — Fixed CSS formatting for multiline function arguments preceded by comments
- **fixed** — Fixed useHookAtTopLevel to no longer report hooks in named forwardRef components that receive a ref parameter
- **fixed** — Fixed parsing of curried arrow functions in ternary consequents when the inner arrow's parameters use a destructuring pattern
- **fixed** — Fixed noUselessTernary quick fix to preserve operator spacing when simplifying or inverting boolean ternary expressions
- **fixed** — Fixed biome check --write to be idempotent on Svelte files where multi-line template literals in script blocks and block comments in style blocks were gaining extra indent levels on every run
- **fixed** — Fixed HTML formatter duplicating comments placed directly before Svelte {@const ...} or {@debug ...} blocks
- **fixed** — Fixed Svelte {#each} array destructuring to no longer include spaces inside square brackets, and fixed multiline bind function expressions to indent their getter, setter, and function body correctly
- **changed** — Improved accuracy of type-aware lint rules by resolving more inferred types, including floating Promises returned by aliased callbacks and arrays of Promises created by async mapping callbacks
- **fixed** — Fixed false positives in noMisleadingReturnType when generic-constraint, normalization, substitution, or structural return-type comparison cannot complete
- **changed** — HTML parser now accepts mixed-case doctype declarations
- **changed** — The rdjson reporter now populates the severity field of each diagnostic (ERROR, WARNING, or INFO)

##### 2.5.6

###### Patch Changes

- [#11035](https://github.com/biomejs/biome/pull/11035) [`0e4b03b`](https://github.com/biomejs/biome/commit/0e4b03be71b32120c6326e58e046260bcf5d3231) Thanks [@ematipico](https://github.com/ematipico)! - Fixed a performance regression in [`noMisusedPromises`](https://biomejs.dev/linter/rules/no-misused-promises/) that caused type inference to run repeatedly while linting a file.

- [#11043](https://github.com/biomejs/biome/pull/11043) [`22ec076`](https://github.com/biomejs/biome/commit/22ec076462d4590ea7c95f7693b69040c32a38aa) Thanks [@denbezrukov](https://github.com/denbezrukov)! - Fixed CSS formatting for multiline function arguments preceded by comments:

  ```diff
   .example {
     value: outer(
       1,
       /* comment */
       nested(
  -      first,
  -      second
  -    )
  +        first,
  +        second
  +      )
     );
   }
  ```

- [#11007](https://github.com/biomejs/biome/pull/11007) [`c9acb25`](https://github.com/biomejs/biome/commit/c9acb25acbce7a6f632b5041ec546a604aea4343) Thanks [@BTF-Kabir-2020](https://github.com/BTF-Kabir-2020)! - Fixed [#9195](https://github.com/biomejs/biome/issues/9195): [`useHookAtTopLevel`](https://biomejs.dev/linter/rules/use-hook-at-top-level/) no longer reports hooks in named `forwardRef` components that receive a `ref` parameter.

- [#10152](https://github.com/biomejs/biome/pull/10152) [`50a9bd8`](https://github.com/biomejs/biome/commit/50a9bd84df852de305e94a91fb57f6b3b1378187) Thanks [@Zelys-DFKH](https://github.com/Zelys-DFKH)! - Fixed [#10131](https://github.com/biomejs/biome/issues/10131): Biome now correctly parses curried arrow functions in ternary consequents when the inner arrow's parameters use a destructuring pattern, e.g. `cond ? (x) => ({ a, b }) => body : alt`.

- [#11105](https://github.com/biomejs/biome/pull/11105) [`8ffe2b9`](https://github.com/biomejs/biome/commit/8ffe2b9f2f9224921a0bad4a772e6611006351e5) Thanks [@dadavidtseng](https://github.com/dadavidtseng)! - Fixed [#11092](https://github.com/biomejs/biome/issues/11092): The [`noUselessTernary`](https://biomejs.dev/linter/rules/no-useless-ternary/) quick fix now preserves operator spacing when simplifying or inverting boolean ternary expressions.

- [#10533](https://github.com/biomejs/biome/pull/10533) [`5809875`](https://github.com/biomejs/biome/commit/580987506a32cdde2f5498e0f712e3493ef9adde) Thanks [@Mokto](https://github.com/Mokto)! - Fixed [#10515](https://github.com/biomejs/biome/issues/10515): `biome check --write` was not idempotent on Svelte files — multi-line template literals in `<script>` blocks and block comments in `<style>` blocks gained an extra indent level on every run.

- [#11040](https://github.com/biomejs/biome/pull/11040) [`0abb620`](https://github.com/biomejs/biome/commit/0abb620b2f0bd748bf272a2bc56aa02f5a6d0fee) Thanks [@Mokto](https://github.com/Mokto)! - Fixed an issue where the HTML formatter would duplicate a comment placed directly before a Svelte `{@const ...}` or `{@debug ...}` block. The duplication compounded on every subsequent `--write`, causing the file to grow exponentially.

- [#10858](https://github.com/biomejs/biome/pull/10858) [`6d18204`](https://github.com/biomejs/biome/commit/6d182043b1de76f8668464bfa5c295161135ee0e) Thanks [@ruidosujeira](https://github.com/ruidosujeira)! - Fixed [#10839](https://github.com/biomejs/biome/issues/10839): Svelte `{#each}` array destructuring no longer includes spaces inside square brackets, and multiline bind function expressions now indent their getter, setter, and function body correctly.

- [#11009](https://github.com/biomejs/biome/pull/11009) [`2c36626`](https://github.com/biomejs/biome/commit/2c36626bed58e63e49ecca8a40c717adae4c91ac) Thanks [@ematipico](https://github.com/ematipico)! - Improved the accuracy of type-aware lint rules by resolving more inferred types. For example, [`noFloatingPromises`](https://biomejs.dev/linter/rules/no-floating-promises/) now detects floating Promises retu

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.6]_

### 2.5.5 — Biome CLI v2.5.5

- Date: 2026-07-21
- Version: 2.5.5
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.5
- Permalink: https://whatsnew.fyi/product/biome/releases/2.5.5

- **fixed** — Fixed useExhaustiveSwitchCases for unions of bigint literals to report missing bigint cases and compare bigint literals by value
- **fixed** — Fixed false positives in noBaseToString and useNullishCoalescing when member, stringification, or nullish inference cannot complete
- **fixed** — Fixed useSortedAttributes action no longer triggering for HTML instructions
- **fixed** — Fixed noThenProperty failing to detect Object.fromEntries, Object.defineProperty, and Reflect.defineProperty calls with comments between their tokens
- **fixed** — Fixed useAriaPropsSupportedByRole no longer reporting false positives for shorthand attributes that determine an element's implicit ARIA role
- **fixed** — Fixed CSS formatter casing for syntax-owned names while preserving author-defined names, including scoped keyframes and container scroll-state queries
- **fixed** — Fixed CSS formatting for comments between declaration values and !important
- **fixed** — Fixed CSS formatter to preserve comments on the correct side of selector combinators and before declaration blocks
- **fixed** — Fixed CSS formatter to keep selectors with escaped newlines in attribute values inline when they fit
- **fixed** — Fixed noUnresolvedImports no longer reporting false positives such as import type { NextRequest } from "next/server"
- **fixed** — Fixed HTML/Vue parser no longer panics on the argument-less v-bind shorthand

##### 2.5.5

###### Patch Changes

- [#10972](https://github.com/biomejs/biome/pull/10972) [`ab8c21b`](https://github.com/biomejs/biome/commit/ab8c21b35e81708276e4283a4a0ff86ea815e345) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [`useExhaustiveSwitchCases`](https://biomejs.dev/linter/rules/use-exhaustive-switch-cases/) for unions of bigint literals. The rule now reports missing bigint cases and compares bigint literals by value, including binary, octal, hexadecimal, and separator-containing spellings. For example, this switch now reports the missing `2n` case:

  ```ts
  declare const value: 1n | 2n;
  switch (value) {
    case 1n:
      break;
  }
  ```

- [#10972](https://github.com/biomejs/biome/pull/10972) [`ab8c21b`](https://github.com/biomejs/biome/commit/ab8c21b35e81708276e4283a4a0ff86ea815e345) Thanks [@ematipico](https://github.com/ematipico)! - Fixed false positives in [`noBaseToString`](https://biomejs.dev/linter/rules/no-base-to-string/) and [`useNullishCoalescing`](https://biomejs.dev/linter/rules/use-nullish-coalescing/) when member, stringification, or nullish inference cannot complete. These rules now suppress diagnostics instead of reporting from partial type information. For example, neither expression is reported when a recursive type cannot be fully resolved:

  ```ts
  type Recursive = Recursive;
  declare const value: Recursive;

  String(value);
  value || "fallback";
  ```

- [#10977](https://github.com/biomejs/biome/pull/10977) [`0bf7486`](https://github.com/biomejs/biome/commit/0bf748653e488d0b959d39847641438cdb28188b) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#10922](https://github.com/biomejs/biome/issues/10922): the action [`useSortedAttributes`](https://biomejs.dev/assist/actions/use-sorted-attributes/) no longer triggers for HTML instructions.

- [#10957](https://github.com/biomejs/biome/pull/10957) [`cf263c4`](https://github.com/biomejs/biome/commit/cf263c4700e9f24115e541d1f142934a9b2d878f) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [`noThenProperty`](https://biomejs.dev/linter/rules/no-then-property/) failing to detect `Object.fromEntries`, `Object.defineProperty`, and `Reflect.defineProperty` calls with comments between their tokens.

- [#10983](https://github.com/biomejs/biome/pull/10983) [`edc0ed7`](https://github.com/biomejs/biome/commit/edc0ed738ab8da3d512d527196684bd668090854) Thanks [@ayaangazali](https://github.com/ayaangazali)! - Fixed [#10980](https://github.com/biomejs/biome/issues/10980): [`useAriaPropsSupportedByRole`](https://biomejs.dev/linter/rules/use-aria-props-supported-by-role/) no longer reports false positives when the attribute that determines an element's implicit ARIA role is written as a shorthand attribute, such as `<a {href} aria-label="...">` in Astro and Svelte files.

  Shorthand attributes are now taken into account when computing the implicit role, so the anchor above correctly resolves to the `link` role instead of `generic`.

- [#10889](https://github.com/biomejs/biome/pull/10889) [`89526e3`](https://github.com/biomejs/biome/commit/89526e3858c437408ec9ff192c35a866ad991d1b) Thanks [@denbezrukov](https://github.com/denbezrukov)! - Fixed CSS formatter casing for syntax-owned names while preserving author-defined names, including scoped keyframes and container scroll-state queries.

  ```diff
  - A:HOVER { COLOR: INITIAL; }
  + A:hover { color: initial; }
  - @KEYFRAMES :GLOBAL KeepFrames { FROM { COLOR: RED; } }
  + @keyframes :GLOBAL KeepFrames { from { color: RED; } }
  - @CONTAINER scroll-state((SCROLLED: TOP) AND (STUCK)) { A:HOVER { COLOR: RED; } }
  + @container scroll-state((SCROLLED: TOP) AND (STUCK)) { A:hover { color: RED; } }
  ```

- [#10964](https://github.com/biomejs/biome/pull/10964) [`794ccd0`](https://github.com/biomejs/biome/commit/794ccd0528345c4eaa87af1d86f02475277a0a22) Thanks [@denbezrukov](https://github.com/denbezrukov)! - Fixed CSS formatting for comments between declaration values and `!important`.

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.5]_

### 2.5.4 — Biome CLI v2.5.4

- Date: 2026-07-15
- Version: 2.5.4
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.4
- Permalink: https://whatsnew.fyi/product/biome/releases/2.5.4

- **changed** — Improved the performance of the HTML parser slightly in synthetic benchmarks
- **fixed** — On-type formatting no longer moves comments before an if statement into its body
- **fixed** — noLabelWithoutControl now correctly detects text interpolation in Astro, Svelte & Vue as valid accessible content
- **fixed** — Svelte directives no longer throw an accidental debug log
- **fixed** — biome check --write --unsafe no longer hangs forever when applying the noCommentText code fix
- **fixed** — Prevented a module-inference regression introduced by a housekeeping change
- **fixed** — Biome now breaks the arguments of curried test.each, it.each, describe.each, and test.for calls when they exceed the configured line width
- **fixed** — Biome will now remove stale Unix daemon sockets from older Biome versions when starting a newer daemon
- **added** — Basic block properties support for YAML formatting
- **changed** — useSortedClasses now sorts important-suffix classes in sort_v4
- **fixed** — Markdown parser now handles whitespace after list markers
- **added** — Inference engine via salsa
- **changed** — HTML/SVG tag names now use keywords for better performance
- **fixed** — Avoid string comparisons for HTML tag names
- **fixed** — Module inference cloning now uses correct function
- **fixed** — Markdown parser correctly parses whitespace after list markers

##### 2.5.4

###### Patch Changes

- [#10665](https://github.com/biomejs/biome/pull/10665) [`55ff995`](https://github.com/biomejs/biome/commit/55ff995098148446b7e7fdfc19053902bb987122) Thanks [@dyc3](https://github.com/dyc3)! - Improved the performance of the HTML parser slightly in our synthetic benchmarks.

- [#10894](https://github.com/biomejs/biome/pull/10894) [`f4fb10e`](https://github.com/biomejs/biome/commit/f4fb10e176e537e8ce2cac0c3fd4c38a77f91886) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#6392](https://github.com/biomejs/biome/issues/6392): On-type formatting no longer moves comments before an `if` statement into its body.

- [#10939](https://github.com/biomejs/biome/pull/10939) [`f2799db`](https://github.com/biomejs/biome/commit/f2799db38e3d8a644207d9b8f957abea6cb3d9fa) Thanks [@Netail](https://github.com/Netail)! - Fixed [#10930](https://github.com/biomejs/biome/issues/10930): [`noLabelWithoutControl`](https://biomejs.dev/linter/rules/no-label-without-control/) now correctly detects text interpolation in Astro, Svelte & Vue as valid accessible content.

- [#10945](https://github.com/biomejs/biome/pull/10945) [`ae15d98`](https://github.com/biomejs/biome/commit/ae15d98bbf2222fbb34e3e31832cba9676a6d01c) Thanks [@Netail](https://github.com/Netail)! - Fixed [#10942](https://github.com/biomejs/biome/issues/10942): Svelte directives don't throw an accidental debug log anymore.

- [#10842](https://github.com/biomejs/biome/pull/10842) [`5e1abfe`](https://github.com/biomejs/biome/commit/5e1abfee59155b5fdca8813314371ed54c06acfb) Thanks [@JamBalaya56562](https://github.com/JamBalaya56562)! - Fixed [#9196](https://github.com/biomejs/biome/issues/9196): `biome check --write --unsafe` no longer hangs forever when applying the [`noCommentText`](https://biomejs.dev/linter/rules/no-comment-text/) code fix.

  The rule's fix now wraps the comment in a real JSX expression container (`{/* comment */}`) instead of re-inserting the braces as plain JSX text, so the fixed code is no longer reported again by the same rule.

- [#10891](https://github.com/biomejs/biome/pull/10891) [`ecca79e`](https://github.com/biomejs/biome/commit/ecca79e8ff10f40aa676212c0db0a970c6091615) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [`#10885`](https://github.com/biomejs/biome/issues/10885): prevented a module-inference regression introduced by a housekeeping change.

- [#10886](https://github.com/biomejs/biome/pull/10886) [`60c8043`](https://github.com/biomejs/biome/commit/60c8043527f7ccc7b505471e1042f2a4324e4d31) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#10727](https://github.com/biomejs/biome/issues/10727): Biome now breaks the arguments of curried `test.each`, `it.each`, `describe.each`, and `test.for` calls when they exceed the configured line width.

  ```diff
  - test.each([[1, 2]])("a description that is long enough to push the hugged opening line beyond the print width", (a, b) => {
  -   expect(a).toBe(b);
  - });
  + test.each([[1, 2]])(
  +   "a description that is long enough to push the hugged opening line beyond the print width",
  +   (a, b) => {
  +     expect(a).toBe(b);
  +   },
  + );
  ```

- [#10895](https://github.com/biomejs/biome/pull/10895) [`01a85f0`](https://github.com/biomejs/biome/commit/01a85f04b09f0af05b16a15c137421e312ceada5) Thanks [@ematipico](https://github.com/ematipico)! - Biome will now remove stale Unix daemon sockets from older Biome versions when starting a newer daemon.



##### What's Changed
* feat(yml/fmt): basic block properties by @ematipico in https://github.com/biomejs/biome/pull/10873
* feat(useSortedClasses): sort important-suffix classes in sort_v4 by @johncarmack1984 in https://github.com/biomejs/biome/pull/10880
* fix(format/js): wrap curried test each calls by @dyc3 in https://github.com/biomejs/biome/pull/10886
* fix(markdown): parse whitespace after list markers by @tidefield in https://github.com/biomejs/biome/pull/10869
* fix(inference): use correct function w

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.4]_

### 2.5.3 — Biome CLI v2.5.3

- Date: 2026-07-08
- Version: 2.5.3
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.3
- Permalink: https://whatsnew.fyi/product/biome/releases/2.5.3

- **fixed** — Biome now recovers when unsupported CSS Modules @value rules or scoped @keyframes names end at EOF
- **fixed** — Fixed noUnusedVariables false positives in Svelte files for store subscriptions and bindable props that are only written to
- **fixed** — The noUnsafeOptionalChaining rule now reports unsafe optional chains wrapped in TypeScript as, satisfies, type assertion, and instantiation expressions
- **fixed** — The useVueValidVOn rule no longer reports a missing handler for v-on directives using a verb modifier without an expression and accepts the arg-less object syntax
- **changed** — Improved type-aware lint rule inference for built-in globals and indexed function calls
- **fixed** — Biome Language Server no longer goes in deadlock when the scanner is enabled
- **fixed** — Astro shorthand attribute syntax is now correctly being parsed from embedded nodes
- **fixed** — The noProcessEnv rule now also reports computed bracket member access in addition to dot access
- **added** — The useDomQuerySelector rule now supports an ignore option for receiver identifiers that should not be reported
- **fixed** — The --profile-rules flag now reports timings for each plugin separately as plugin/<pluginName>
- **fixed** — Biome no longer inserts stray whitespace when format-on-type runs after closing delimiters
- **fixed** — Biome no longer crashes when checking or linting HTML files with unquoted attribute values

##### 2.5.3

###### Patch Changes

- [#10815](https://github.com/biomejs/biome/pull/10815) [`86613d5`](https://github.com/biomejs/biome/commit/86613d5b01eb965b460ccefbf27f168d87774aaf) Thanks [@WaterWhisperer](https://github.com/WaterWhisperer)! - Fixed a parser panic reported in [#10708](https://github.com/biomejs/biome/issues/10708): Biome now recovers when unsupported CSS Modules `@value` rules or scoped `@keyframes` names end at EOF.

- [#10534](https://github.com/biomejs/biome/pull/10534) [`da9b403`](https://github.com/biomejs/biome/commit/da9b403b6bbacc8d75d56e327a46f4ed0285913e) Thanks [@Mokto](https://github.com/Mokto)! - Fixed [`noUnusedVariables`](https://biomejs.dev/linter/rules/no-unused-variables/) 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](https://github.com/biomejs/biome/pull/10827) [`098ba41`](https://github.com/biomejs/biome/commit/098ba41c99e6efaac8eb182eec258a567bb00123) Thanks [@Aqu1bp](https://github.com/Aqu1bp)! - Fixed [#10698](https://github.com/biomejs/biome/issues/10698): The [`noUnsafeOptionalChaining`](https://biomejs.dev/linter/rules/no-unsafe-optional-chaining/) rule now reports unsafe optional chains wrapped in TypeScript `as`, `satisfies`, type assertion, and instantiation expressions, such as `new (value?.constructor as Constructor)()`.

- [#10773](https://github.com/biomejs/biome/pull/10773) [`3c6513d`](https://github.com/biomejs/biome/commit/3c6513d4e9a82a195785144caa9d96093c3861ff) Thanks [@otkrickey](https://github.com/otkrickey)! - Fixed [#10772](https://github.com/biomejs/biome/issues/10772): [`useVueValidVOn`](https://biomejs.dev/linter/rules/use-vue-valid-v-on/) 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](https://github.com/biomejs/biome/pull/10721) [`d83c66b`](https://github.com/biomejs/biome/commit/d83c66b39a820703d94100f8a6502cc6dbad26a1) Thanks [@minseong0324](https://github.com/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](https://github.com/biomejs/biome/pull/10865) [`6450276`](https://github.com/biomejs/biome/commit/6450276764ee4794a0fcb46c139f95b68d892427) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#10845](https://github.com/biomejs/biome/issues/10845). Biome Language Server no longer goes in deadlock when the scanner is enabled.

- [#10853](https://github.com/biomejs/biome/pull/10853) [`93d8e53`](https://github.com/biomejs/biome/commit/93d8e5352454bccfbd179db03b3155776599c52c) Thanks [@Netail](https://github.com/Netail)! - Fixed [#10840](https://github.com/biomejs/biome/issues/10840): Astro shorthand attribute syntax is now correctly being parsed from embedded nodes.

- [#10820](https://github.com/biomejs/biome/pull/10820) [`bba3092`](https://github.com/biomejs/biome/commit/bba30920715920142e933939f6270feedca933a5) Thanks [@JamBalaya56562](https://github.com/JamBalaya56562)! - Fixed [#10619](https://github.com/biomejs/biome/issues/10619): [`noProcessEnv`](https://biomejs.dev/linter/rules/no-process-env/) 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](https://github.com/biomejs/biome/pull/10835) [`3447b2f`](https://gith

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.3]_

### 2.5.2 — Biome CLI v2.5.2

- Date: 2026-07-01
- Version: 2.5.2
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.2
- Permalink: https://whatsnew.fyi/product/biome/releases/2.5.2

- **added** — Added the option ignoreBooleanCoercion to useNullishCoalescing rule to ignore || and ||= used inside a Boolean() call
- **added** — Added the option ignorePrimitives to useNullishCoalescing rule to ignore ||, ||=, and ternary expressions whose non-nullish operands are primitives
- **added** — Added the new nursery rule noSvelteUnnecessaryStateWrap to report unnecessary $state() wrapping of classes from svelte/reactivity
- **fixed** — Fixed useValidAutocomplete rule to correctly flag the autoComplete attribute
- **fixed** — Improved performance of the Biome Language Server by cancelling in-flight operations when there are fast updates
- **fixed** — Fixed noMisleadingReturnType false positive on returns using widening type assertions and now reports literal-pinning assertions
- **fixed** — Fixed CSS parser to correctly parse nesting selectors when & appears as a trailing sub-selector after a type selector
- **fixed** — Fixed CSS formatter output for selector lists with allowWrongLineComments and // comments after a selector comma
- **fixed** — Fixed CSS parser to accept Tailwind @variant and @utility names that start with a digit
- **fixed** — Fixed GitLab reporter to handle --verbose diagnostics filtering correctly
- **fixed** — Fixed a bug where GritQL patterns rejected positional unkeyed arguments

##### 2.5.2

###### Patch Changes

- [#10595](https://github.com/biomejs/biome/pull/10595) [`f458028`](https://github.com/biomejs/biome/commit/f4580289094a8fe5c85252adc3399c060bab811e) Thanks [@pkallos](https://github.com/pkallos)! - Added the option `ignoreBooleanCoercion` to [useNullishCoalescing](https://biomejs.dev/linter/rules/use-nullish-coalescing/). When enabled, Biome ignores `||` and `||=` used inside a `Boolean()` call, where coalescing on falsy values is intentional.

- [#10798](https://github.com/biomejs/biome/pull/10798) [`4a32b63`](https://github.com/biomejs/biome/commit/4a32b63eb41f144dc8faf6b5cdb05e1de5dbcb63) Thanks [@pkallos](https://github.com/pkallos)! - Added the option `ignorePrimitives` to [useNullishCoalescing](https://biomejs.dev/linter/rules/use-nullish-coalescing/). 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](https://github.com/biomejs/biome/pull/10545) [`f3d4c00`](https://github.com/biomejs/biome/commit/f3d4c0082676c5188e9a6aa516318c7e3d59bda6) Thanks [@Mokto](https://github.com/Mokto)! - Added the new nursery rule [`noSvelteUnnecessaryStateWrap`](https://biomejs.dev/linter/rules/no-svelte-unnecessary-state-wrap/), which reports unnecessary `$state()` wrapping of classes from `svelte/reactivity` that are already reactive.

  ```svelte
  <script>
  import { SvelteMap } from "svelte/reactivity";
  const map = $state(new SvelteMap()); // redundant
  </script>
  ```

- [#10752](https://github.com/biomejs/biome/pull/10752) [`f62fb8b`](https://github.com/biomejs/biome/commit/f62fb8b53092fe85e16f9d4ea0e584fee7031ab5) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#10739](https://github.com/biomejs/biome/issues/10739). Now the rule [`useValidAutocomplete`](https://biomejs.dev/linter/rules/use-valid-autocomplete/) correctly flags the `autoComplete` attribute.

- [#10796](https://github.com/biomejs/biome/pull/10796) [`f1b3ab2`](https://github.com/biomejs/biome/commit/f1b3ab2c09522a52c93f669ce679675237b96813) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#10768](https://github.com/biomejs/biome/issues/10768). Improved the performance of the Biome Language Server by cancelling certain in-flight operations when there are fast updates.

- [#10719](https://github.com/biomejs/biome/pull/10719) [`aa649b5`](https://github.com/biomejs/biome/commit/aa649b586a2221bf058af7ce80af6faa11faf846) Thanks [@minseong0324](https://github.com/minseong0324)! - Fixed [`noMisleadingReturnType`](https://biomejs.dev/linter/rules/no-misleading-return-type/) 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.

  ```ts
  // 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](https://github.com/biomejs/biome/pull/10678) [`8f073a7`](https://github.com/biomejs/biome/commit/8f073a7cd72b4cf46c2ebf2bc08f4068fc4b5e34) Thanks [@PranavAchar01](https://github.com/PranavAchar01)! - Fixed [#7718](https://github.com/biomejs/biome/issues/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](https://github.com/biomejs/biome/pull/10756) [`5ec965a`](https://github.com/biomejs/biome/commit/5ec965a2620dec7cb40aa4946ba1d41408b11fd9) Thanks [@denbezrukov](https://github.com/denbezrukov)! - Fixed CSS formatter output for selector lists with `allowWrongLineComments` and `//` comments after a selector comma. Bi

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.2]_

### 2.5.1 — Biome CLI v2.5.1

- Date: 2026-06-23
- Version: 2.5.1
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.1
- Permalink: https://whatsnew.fyi/product/biome/releases/2.5.1

- **fixed** — Fixed CSS formatter output for comments between import media queries
- **fixed** — Fixed json and json-pretty reporters to escape backslashes in diagnostic location paths
- **fixed** — Fixed biome migrate to no longer emit invalid trailing comma when a renamed rule is the last member of its rule group
- **fixed** — Fixed false positive in noUnusedVariables for Svelte files where variables referenced inside {@html expr} blocks were incorrectly reported as unused
- **changed** — Updated biome init command to include more up-to-date URL to the first-party extensions page
- **fixed** — Fixed useErrorCause rule to correctly detect shorthand properties
- **fixed** — Improved how the Biome Language Server loads multiple configuration files inside a workspace
- **fixed** — Fixed Biome plugins to be properly filtered when using --only and --skip flags
- **fixed** — Fixed useInlineScriptId rule to correctly trim trivia to detect if an id attribute has been set
- **changed** — Disabled Go-to definition editor feature by default due to memory leak issues
- **fixed** — Fixed Biome to throw an error when the field level is missing from a rule option
- **changed** — Improved the diagnostic and documentation of useFlatMap rule
- **changed** — Improved DX of the JSON schema when used by code editors like VSCode
- **fixed** — Fixed Biome Daemon to correctly shut down when the editor is closed during an in-progress operation

##### 2.5.1

###### Patch Changes

- [#10722](https://github.com/biomejs/biome/pull/10722) [`f8a303d`](https://github.com/biomejs/biome/commit/f8a303d08b6b22f56edb8ff5e7caa665532d613a) Thanks [@denbezrukov](https://github.com/denbezrukov)! - Fixed CSS formatter output for comments between import media queries.

  ```diff
  -@import url("print.css") print,
  -/* comment */
  -screen;
  +@import url("print.css") print, /* comment */ screen;
  ```

- [#10738](https://github.com/biomejs/biome/pull/10738) [`9fdc560`](https://github.com/biomejs/biome/commit/9fdc5600997ef59ca7ed55ac212473de9bdb0b2a) Thanks [@JamBalaya56562](https://github.com/JamBalaya56562)! - Fixed [#9899](https://github.com/biomejs/biome/issues/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.

  ```diff
  -    "path": "src\account\setup-passkey.tsx",
  +    "path": "src\\account\\setup-passkey.tsx",
  ```

- [#10626](https://github.com/biomejs/biome/pull/10626) [`5f837df`](https://github.com/biomejs/biome/commit/5f837df033afc34d43b398aeddc06c1d4fa491d9) Thanks [@tom-groves](https://github.com/tom-groves)! - Fixed [#10625](https://github.com/biomejs/biome/issues/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](https://github.com/biomejs/biome/pull/10535) [`c245f9d`](https://github.com/biomejs/biome/commit/c245f9d9e239471d5437cd08f9cfa4601a85abd5) Thanks [@Mokto](https://github.com/Mokto)! - Fixed a false positive in [`noUnusedVariables`](https://biomejs.dev/linter/rules/no-unused-variables/) for Svelte files where variables referenced inside `{@html expr}` blocks were incorrectly reported as unused.

- [#10668](https://github.com/biomejs/biome/pull/10668) [`a0f197e`](https://github.com/biomejs/biome/commit/a0f197eb1a6974539927f105ff1dde1f51d07d74) Thanks [@Netail](https://github.com/Netail)! - The `biome init` command has been updated to include a more up-to-date URL to [the first-party extensions page](https://biomejs.dev/editors/first-party-extensions/).

- [#10667](https://github.com/biomejs/biome/pull/10667) [`d8c3e87`](https://github.com/biomejs/biome/commit/d8c3e878d53515c02bd6c5cb899b2eaec046c542) Thanks [@Netail](https://github.com/Netail)! - Fixed [#10664](https://github.com/biomejs/biome/issues/10664): [useErrorCause](https://biomejs.dev/linter/rules/use-error-cause/) now correctly detects a shorthand property.

- [#10696](https://github.com/biomejs/biome/pull/10696) [`ef2373f`](https://github.com/biomejs/biome/commit/ef2373f29be15673705884d345c9af189e30b581) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9566](https://github.com/biomejs/biome/issues/9566). Improved how the Biome Language Server loads multiple configuration files inside a workspace.

- [#10705](https://github.com/biomejs/biome/pull/10705) [`4ccb410`](https://github.com/biomejs/biome/commit/4ccb410dc00a6fb243934dad2e8681a9d5d9529e) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#10652](https://github.com/biomejs/biome/issues/10652). Biome plugins are now properly filtered when using `--only` and `--skip` flags.

- [#10669](https://github.com/biomejs/biome/pull/10669) [`aa0a6eb`](https://github.com/biomejs/biome/commit/aa0a6eb8007493961cd578f04201248c15fd809a) Thanks [@Netail](https://github.com/Netail)! - Fixed [#10651](https://github.com/biomejs/biome/issues/10651): [useInlineScriptId](https://biomejs.dev/linter/rules/use-inline-script-id/) now correctly trims trivia to detect if an id attribute has been set.

- [#10689](https://github.com/biomejs/biome/pull/10689) [`844b1be`](https://github.com/biomejs/biome/commit/844b1be60ded28bf4c650d85806919ceb

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.1]_

### 2.5.0 — Biome CLI v2.5.0

- Date: 2026-06-12
- Version: 2.5.0
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.0
- Permalink: https://whatsnew.fyi/product/biome/releases/2.5.0

- **added** — Added a new `concise` reporter that prints diagnostics in a compact manner when passed to `format`, `lint`, `check`, and `ci` commands
- **added** — Added `useKeyWithClickEvents` a11y lint rule for HTML files to enforce keyboard accessibility alongside click handlers
- **added** — Added `noUndeclaredClasses` nursery lint rule for HTML, JSX, and SFC files to detect CSS class names used but not defined
- **added** — Added `noUnusedClasses` nursery lint rule for CSS to detect class selectors never referenced in importing HTML or JSX files
- **added** — Added `biome upgrade` command for standalone installations to upgrade Homebrew installs and manually installed binaries
- **added** — Added HTML version of `useHeadingContent` rule to enforce that heading elements have accessible content in HTML, Vue, Svelte, and Astro files
- **added** — Added HTML version of `useKeyWithMouseEvents` rule to enforce that `onmouseover` is accompanied by `onfocus` and `onmouseout` by `onblur` in HTML, Vue, Svelte, and Astro files
- **added** — Added `useSortedTypeFields` assist action to sort GraphQL object type, interface type, and input object type fields alphabetically

##### 2.5.0

###### Minor Changes

- [#9539](https://github.com/biomejs/biome/pull/9539) [`f0615fd`](https://github.com/biomejs/biome/commit/f0615fdae80fa7257fc1d0448d2027cb1acff46e) Thanks [@ematipico](https://github.com/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](https://github.com/biomejs/biome/pull/9495) [`2056b23`](https://github.com/biomejs/biome/commit/2056b23812a17f9c9a9015e5b725faecb04647b5) Thanks [@aviraldua93](https://github.com/aviraldua93)! - Added the [`useKeyWithClickEvents`](https://biomejs.dev/linter/rules/use-key-with-click-events/) 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"`.

  ```html
  <!-- Invalid: no keyboard handler -->
  <div onclick="handleClick()">Click me</div>

  <!-- Valid: has keyboard handler -->
  <div onclick="handleClick()" onkeydown="handleKeyDown()">Click me</div>

  <!-- Valid: inherently keyboard-accessible -->
  <button onclick="handleClick()">Submit</button>
  ```

- [#9152](https://github.com/biomejs/biome/pull/9152) [`9ec8500`](https://github.com/biomejs/biome/commit/9ec8500dabc7305cbe04ecf27a84a1450f012c0b) Thanks [@ematipico](https://github.com/ematipico)! - Added new nursery lint rule [`noUndeclaredClasses`](https://biomejs.dev/linter/rules/no-undeclared-classes/) 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
  <!-- .typo is used but never defined -->
  <html>
    <head>
      <style>
        .button {
          color: blue;
        }
      </style>
    </head>
    <body>
      <div class="button typo"></div>
    </body>
  </html>
  ```

- [#9152](https://github.com/biomejs/biome/pull/9152) [`9ec8500`](https://github.com/biomejs/biome/commit/9ec8500dabc7305cbe04ecf27a84a1450f012c0b) Thanks [@ematipico](https://github.com/ematipico)! - Added new nursery lint rule [`noUnusedClasses`](https://biomejs.dev/linter/rules/no-unused-classes/) 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.

  ```css
  /* styles.css — .ghost is never used in any importing file */
  .button {
    color: blue;
  }
  .ghost {
    color: red;
  }
  ```

  ```jsx
  /* App.jsx */
  import "./styles.css";
  export default () => <div className="button" />;
  ```

- [#9546](https://github.com/biomejs/biome/pull/9546) [`6567efa`](https://github.com/biomejs/biome/commit/6567efa51ba074436b017e49b1d2d369e7252e74) Thanks [@nhedger](https://github.com/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](https://github.com/biomejs/biome/pull/9716) [`701767a`](https://github.

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.5.0]_

### 2.4.16 — Biome CLI v2.4.16

- Date: 2026-05-27
- Version: 2.4.16
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.16
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.16

- **fixed** — Fixed diagnostics showing incorrect location in Astro files
- **fixed** — Fixed HTML formatting where comments could cause the formatter to split up closing tags and produce syntactically invalid HTML
- **fixed** — Fixed diagnostics emitted by the noUntrustedLicenses rule
- **fixed** — Fixed biome rage --linter to display rules enabled through linter domains in the enabled rules list
- **fixed** — Fixed parsing of Svelte function bindings such as bind:value={get, set} to prevent false positives from noCommaOperator rule
- **changed** — Updated useDestructuring rule to provide variableDeclarator and assignmentExpression options to control which contexts enforce destructuring, with diagnostic for object destructuring in assignment expressions now instructing users to wrap the assignment in parentheses
- **fixed** — Fixed useOptionalChain rule to detect negated guard inequality chains like !foo || foo.bar !== "x"
- **fixed** — Fixed noMisusedPromises rule causing stack overflow when nested function returns object with shorthand properties shadowing destructured variables from outer scope
- **added** — Added support for formatter.trailingCommas in overrides
- **fixed** — Fixed Vue and Svelte formatting for standalone interpolations in inline elements to preserve existing newlines
- **fixed** — Fixed noUnusedFunctionParameters rule to mention the parameter name in the diagnostic
- **fixed** — Fixed CSS and SCSS formatting for comments around declaration colons to keep comments at the same boundary as Prettier
- **fixed** — Corrected the noReactNativeDeepImports source rule to point to the proper upstream rule for proper migration

##### 2.4.16

###### Patch Changes

- [#10329](https://github.com/biomejs/biome/pull/10329) [`ef764d5`](https://github.com/biomejs/biome/commit/ef764d51b9f5be18ec5a4f9b4dce732512e5d805) Thanks [@Conaclos](https://github.com/Conaclos)! - Fixed an issue where diagnostics showed an incorrect location in Astro files.

- [#10363](https://github.com/biomejs/biome/pull/10363) [`50aa415`](https://github.com/biomejs/biome/commit/50aa4157599a1ac5c77c13bce81f5c87240beff0) Thanks [@dyc3](https://github.com/dyc3)! - Fixed HTML formatting for a case where comments could cause the formatter to split up a closing tag, which would cause the resulting HTML to be syntactically invalid.

  Input:

  ```html
  <span
    ><!-- 1
  --><span>a</span
    ><!-- 2
  --><span>b</span
    ><!-- 3
  --></span>
  ```

  Output:

  ```diff
    <span
  	  ><!-- 1
  - --> <span>a</span<!-- 2
  - --> ><span>b</span><!-- 3
  + --><span>a</span><!-- 2
  + --><span>b</span><!-- 3
    --></span
    >
  ```

- [#10465](https://github.com/biomejs/biome/pull/10465) [`0c718da`](https://github.com/biomejs/biome/commit/0c718da81770f47d65845bc1a006f99512d9359b) Thanks [@dfedoryshchev](https://github.com/dfedoryshchev)! - Fixed diagnostics emitted by the `noUntrustedLicenses` rule.

- [#10358](https://github.com/biomejs/biome/pull/10358) [`05c2617`](https://github.com/biomejs/biome/commit/05c26176573534a0abfa92d454d244f9569bc77d) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#10356](https://github.com/biomejs/biome/issues/10356): `biome rage --linter` now displays rules enabled through linter domains in the enabled rules list.

- [#10300](https://github.com/biomejs/biome/pull/10300) [`950247c`](https://github.com/biomejs/biome/commit/950247c389e693c16b47d61d8ef0f1b85d1a1b02) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#10265](https://github.com/biomejs/biome/issues/10265): Svelte function bindings such as `bind:value={get, set}` are now parsed more precisely, so [`noCommaOperator`](https://biomejs.dev/linter/rules/no-comma-operator/) won't emit false positives for that syntax anymore.

- [#9786](https://github.com/biomejs/biome/pull/9786) [`e71f584`](https://github.com/biomejs/biome/commit/e71f58490f3121432d1bc24ae5330ecf96391a40) Thanks [@MeGaNeKoS](https://github.com/MeGaNeKoS)! - Fixed [#8480](https://github.com/biomejs/biome/issues/8480): [`useDestructuring`](https://biomejs.dev/linter/rules/use-destructuring/) now provides `variableDeclarator` and `assignmentExpression` options to control which contexts enforce destructuring, matching ESLint's `prefer-destructuring` configuration. Both default to `{array: true, object: true}`. The diagnostic for object destructuring in assignment expressions now instructs users to wrap the assignment in parentheses.

- [#10425](https://github.com/biomejs/biome/pull/10425) [`1948b72`](https://github.com/biomejs/biome/commit/1948b7242e092ed0cfcf501ef6f119202b8ea93b) Thanks [@sjh9714](https://github.com/sjh9714)! - Fixed [#10244](https://github.com/biomejs/biome/issues/10244): The `useOptionalChain` rule now detects negated guard inequality chains like `!foo || foo.bar !== "x"`.

- [#10442](https://github.com/biomejs/biome/pull/10442) [`001f94f`](https://github.com/biomejs/biome/commit/001f94f696d9baca3c231d39895a01d4dd528d52) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#10411](https://github.com/biomejs/biome/issues/10411): [`noMisusedPromises`](https://biomejs.dev/linter/rules/no-misused-promises/) no longer causes a stack overflow when a nested function returns an object with shorthand properties that shadow destructured variables from an outer scope.

- [#10318](https://github.com/biomejs/biome/pull/10318) [`9b1577f`](https://github.com/biomejs/biome/commit/9b1577fa400279d9b0222cbc920cfa9ddcf1c9d6) Thanks [@dyc3](https://github.com/dyc3)! - Added support for `formatter.trailingCommas` in overrides. This option was previously available in the top-level formatter configuration but missing from formatter overri

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.16]_

### 2.4.15 — Biome CLI v2.4.15

- Date: 2026-05-09
- Version: 2.4.15
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.15
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.15

- **added** — Add the nursery rule useTestHooksInOrder in the test domain to enforce that Jest/Vitest lifecycle hooks are declared in the order they execute
- **added** — Add the nursery rule useVueNextTickPromise to enforce Promise syntax when using Vue nextTick
- **added** — Add the nursery rule noVueVOnNumberValues to disallow deprecated number modifiers on Vue v-on directives
- **added** — Add the nursery rule useVueValidVFor to validate Vue v-for directives and report invalid aliases, missing component keys, and keys that do not use iteration variables
- **added** — Add the recommended nursery rule noVueImportCompilerMacros to disallow importing Vue compiler macros such as defineProps from vue because they are automatically available
- **fixed** — Fix style/useReadonlyClassProperties no longer reporting class properties as readonly-able when they are assigned inside arrow callbacks nested in class property initializers
- **fixed** — Make organizeImports diagnostics more detailed and more precise with better localization of issues
- **fixed** — Make organizeImports error when it encounters an unknown predefined group in configuration
- **changed** — Improve noMisleadingReturnType to flag union annotations whose extra variants are never returned and suggest the narrower type
- **fixed** — Preserve child line breaks in HTML and Vue element formatting when an element contains another element child on its own line
- **fixed** — Fix Svelte templates with missing expressions no longer parsed as HtmlBogusElement
- **changed** — Enhance noMisleadingReturnType to detect misleading return type annotations when object literal properties are initialized with as const

##### 2.4.15

###### Patch Changes

- [#9394](https://github.com/biomejs/biome/pull/9394) [`ba3480e`](https://github.com/biomejs/biome/commit/ba3480e62da6ac7f0f9d99126f1459a72306368b) Thanks [@dyc3](https://github.com/dyc3)! - Added the nursery rule [`useTestHooksInOrder`](https://biomejs.dev/linter/rules/use-test-hooks-in-order) in the `test` domain. The rule enforces that Jest/Vitest lifecycle hooks (`beforeAll`, `beforeEach`, `afterEach`, `afterAll`) are declared in the order they execute, making test setup and teardown easier to reason about.

- [#10254](https://github.com/biomejs/biome/pull/10254) [`e0a54cc`](https://github.com/biomejs/biome/commit/e0a54ccc0a0c892fff2270ae772bcecf0d34e79a) Thanks [@dyc3](https://github.com/dyc3)! - Added a new nursery rule [`useVueNextTickPromise`](https://biomejs.dev/linter/rules/use-vue-next-tick-promise/), which enforces Promise syntax when using Vue `nextTick`.

  For example, the following snippet triggers the rule:

  ```js
  import { nextTick } from "vue";

  nextTick(() => {
    updateDom();
  });
  ```

- [#10219](https://github.com/biomejs/biome/pull/10219) [`64aee45`](https://github.com/biomejs/biome/commit/64aee454ac2db2ade31089c1438dd761c94a8d57) Thanks [@dyc3](https://github.com/dyc3)! - Added a new nursery rule [`noVueVOnNumberValues`](https://biomejs.dev/linter/rules/no-vue-v-on-number-values/), that disallows deprecated number modifiers on Vue `v-on` directives.

  For example, the following snippet triggers the rule:

  ```vue
  <input @keyup.13="submit" />
  ```

- [#10195](https://github.com/biomejs/biome/pull/10195) [`7b8d4e1`](https://github.com/biomejs/biome/commit/7b8d4e161a225f14bc9e070e04cc8572ee988bb2) Thanks [@dyc3](https://github.com/dyc3)! - Added the new nursery rule [`useVueValidVFor`](https://biomejs.dev/linter/rules/use-vue-valid-v-for/), which validates Vue `v-for` directives and reports invalid aliases, missing component keys, and keys that do not use iteration variables.

- [#10238](https://github.com/biomejs/biome/pull/10238) [`1110256`](https://github.com/biomejs/biome/commit/1110256c6d60500ebc05b9d2738fe77345c7ffd6) Thanks [@dyc3](https://github.com/dyc3)! - Added the recommended nursery rule [`noVueImportCompilerMacros`](https://biomejs.dev/linter/rules/no-vue-import-compiler-macros/), which disallows importing Vue compiler macros such as `defineProps` from `vue` because they are automatically available.

- [#10201](https://github.com/biomejs/biome/pull/10201) [`1a08f89`](https://github.com/biomejs/biome/commit/1a08f89df55eafe1d8463696d1be53f8dea90a80) Thanks [@realknove](https://github.com/realknove)! - Fixed [#10193](https://github.com/biomejs/biome/issues/10193): `style/useReadonlyClassProperties` no longer reports class properties as readonly-able when they are assigned inside arrow callbacks nested in class property initializers.

- [#9574](https://github.com/biomejs/biome/pull/9574) [`3bd2b6a`](https://github.com/biomejs/biome/commit/3bd2b6adf0be44eda922ad7610781dd2e387bdb6) Thanks [@Conaclos](https://github.com/Conaclos)! - Fixed [#9530](https://github.com/biomejs/biome/issues/9530). The diagnostics of [`organizeImports`](https://biomejs.dev/assist/actions/organize-imports/) are now more detailed and more precise. They are also better at localizing where the issue is.

- [#10205](https://github.com/biomejs/biome/pull/10205) [`a704a6c`](https://github.com/biomejs/biome/commit/a704a6c40392e71aad5127ab35c771486116937e) Thanks [@Conaclos](https://github.com/Conaclos)! - Fixed [#10185](https://github.com/biomejs/biome/issues/10185). [`organizeImports](https://biomejs.dev/assist/actions/organize-imports/) now errors when it encounters an unknown predefined group.

  The following configuration is now reported as invalid because `:INEXISTENT:` is an unknown predefined group.

  ```json
  {
    "assist": {
      "actions": {
        "source": {
          "organizeImports": { "options": { "groups": [":INEXISTENT:"] } }
        }
      }
    }
  }
  `

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.15]_

### 2.4.14 — Biome CLI v2.4.14

- Date: 2026-05-01
- Version: 2.4.14
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.14
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.14

- **added** — Added the nursery rule useTestHooksOnTop in the test domain to flag lifecycle hooks that appear after test cases in the same block
- **added** — Added the new nursery rule noReactStringRefs to disallow legacy React string refs and template-literal refs
- **fixed** — The HTML parser now emits better diagnostics when it encounters a void element with a closing tag, emitting a single diagnostic instead of multiple conflicting ones
- **fixed** — noMisleadingReturnType no longer misses widening from concrete object types, class instances, object literals, tuples, functions, and regular expressions to : object
- **fixed** — noUselessEscapeInRegex no longer flags an escaped backslash followed by - as a useless escape
- **fixed** — organizeImports no longer adds a blank line between a never-matched group and a matched group
- **fixed** — Fixed Vue v-for handling for noUndeclaredVariables and noUnusedVariables to recognize variables declared by v-for directives
- **fixed** — noMisleadingReturnType no longer reports false positives when a union return type's boolean variant is covered by both true and false returns
- **fixed** — Fixed LSP file watcher registration so Biome now watches .biome.json and .biome.jsonc configuration files and reloads workspace settings when they change
- **fixed** — The noThisInStatic rule no longer reports this when it is used as the constructor target in new this(...), which is required for inherited static factory methods

##### 2.4.14

###### Patch Changes

- [#9393](https://github.com/biomejs/biome/pull/9393) [`491b171`](https://github.com/biomejs/biome/commit/491b171e245aa1ad1063662d4408692b4fc11eae) Thanks [@dyc3](https://github.com/dyc3)! - Added the nursery rule [`useTestHooksOnTop`](https://biomejs.dev/linter/rules/use-test-hooks-on-top) in the `test` domain. The rule flags lifecycle hooks (`beforeEach`, `beforeAll`, `afterEach`, `afterAll`) that appear after test cases in the same block, enforcing that hooks are defined before any test case.

- [#10157](https://github.com/biomejs/biome/pull/10157) [`eefc5ab`](https://github.com/biomejs/biome/commit/eefc5ab81709e78068774b0f5bc56af448a733d1) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#7882](https://github.com/biomejs/biome/issues/7882): The HTML parser will now emit better diagnostics when it encounters a void element with a closing tag, such as `<br></br>`. Previously, the parser would emit multiple diagnostics with conflicting advice. Now it emits a single diagnostic that clearly states that void elements should not have closing tags.

- [#10054](https://github.com/biomejs/biome/pull/10054) [`0e9f569`](https://github.com/biomejs/biome/commit/0e9f5696b1f2dec6e0d1f81b39192bdb07ab0c1a) Thanks [@minseong0324](https://github.com/minseong0324)! - [`noMisleadingReturnType`](https://biomejs.dev/linter/rules/no-misleading-return-type/) no longer misses widening from concrete object types, class instances, object literals, tuples, functions, and regular expressions to `: object`.

  A function annotated `: object` returning an object literal:

  ```ts
  function f(): object {
    return { retry: true };
  }
  ```

- [#10116](https://github.com/biomejs/biome/pull/10116) [`53269eb`](https://github.com/biomejs/biome/commit/53269ebe0a2f718213483444696b88c7e8d0e7c4) Thanks [@jiwon79](https://github.com/jiwon79)! - Fixed [#6201](https://github.com/biomejs/biome/issues/6201): [`noUselessEscapeInRegex`](https://biomejs.dev/linter/rules/no-useless-escape-in-regex/) no longer flags an escaped backslash followed by `-` as a useless escape. Patterns like `/[\\-]/` are now considered valid because the second `\` is the escaped backslash, not an unnecessary escape of the trailing dash.

- [#10092](https://github.com/biomejs/biome/pull/10092) [`33d8543`](https://github.com/biomejs/biome/commit/33d8543da451e272000b84a8e29114d72923cdc1) Thanks [@Conaclos](https://github.com/Conaclos)! - Fixed [#9097](https://github.com/biomejs/biome/issues/9097): [`organizeImports`](https://biomejs.dev/assist/actions/organize-imports/) no longer adds a blank line between a never-matched group and a matched group.

  Given the following `organizeImports` options:

  ```json
  {
    "groups": [":NODE:", ":BLANK_LINE:", ":PACKAGE:", ":BLANK_LINE:", ":PATH:"]
  }
  ```

  The following code...

  ```js
  // Comment
  import "package";
  import "./file.js";
  ```

  ...was organized as:

  ```diff
  +
    // Comment
    import "package";
  +
    import "./file.js";
  ```

  A blank line was added even though the group ':NODE:' doesn't match any imports here.
  `:BLANK_LINE:` between never-matched groups and matched groups are now ignored.
  The code is now organized as:

  ```diff
    // Comment
    import "package";
  +
    import "./file.js";
  ```

- [#10138](https://github.com/biomejs/biome/pull/10138) [`a10b6c1`](https://github.com/biomejs/biome/commit/a10b6c119d1f3862da918ce7617ee365bb534c6e) Thanks [@dyc3](https://github.com/dyc3)! - Fixed Vue `v-for` handling for [`noUndeclaredVariables`](https://biomejs.dev/linter/rules/no-undeclared-variables/) and [`noUnusedVariables`](https://biomejs.dev/linter/rules/no-unused-variables/). Biome now recognizes variables declared by `v-for` directives and references to iterated values in Vue templates.

- [#10115](https://github.com/biomejs/biome/pull/10115) [`d428d76`](https://github.com/biomejs/biome/commit/d428d76ba8be7131090c199cefa36613a332e75b) Thanks [@minseong0324](https://git

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.14]_

### 2.4.13 — Biome CLI v2.4.13

- Date: 2026-04-23
- Version: 2.4.13
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.13
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.13

- **added** — Add the nursery rule noUnnecessaryTemplateExpression, which disallows template literals that only contain string literal expressions
- **fixed** — Fix noMisleadingReturnType to no longer report false positives on a getter with a matching setter in the same namespace
- **fixed** — Fix noUselessEscapeInRegex to no longer flag escapes of ClassSetReservedPunctuator characters inside v-flag character classes as useless
- **added** — Add extra rule sources from ESLint CSS to improve biome migrate eslint detection
- **fixed** — Fix useIframeSandbox to flag if there's no initializer value
- **added** — Add the new nursery rule useDomNodeTextContent, which prefers textContent over innerText for DOM node text access
- **added** — Add the new nursery rule noReactNativeDeepImports that disallows deep imports from the react-native package
- **added** — Add the new nursery rule useDomQuerySelector that prefers querySelector() and querySelectorAll() over older DOM query methods
- **fixed** — Fix parsing of nested CSS rules correctly when declarations follow them inside embedded snippets
- **fixed** — Fix noComponentHookFactories to no longer report false positives for object methods and class methods
- **changed** — Tweak the diagnostics range for useAltText, useButtonType, useHtmlLang, useIframeTitle, useValidAriaRole, and useIframeSandbox to report on the opening tag instead of the full tag

##### 2.4.13

###### Patch Changes

- [#9969](https://github.com/biomejs/biome/pull/9969) [`c5eb92b`](https://github.com/biomejs/biome/commit/c5eb92ba288ba13698b37e43617eed5339ad7007) Thanks [@officialasishkumar](https://github.com/officialasishkumar)! - Added the nursery rule [`noUnnecessaryTemplateExpression`](https://biomejs.dev/linter/rules/no-unnecessary-template-expression/), which disallows template literals that only contain string literal expressions. These can be replaced with a simpler string literal.

  For example, the following code triggers the rule:

  ```js
  const a = `${"hello"}`; // can be 'hello'
  const b = `${"prefix"}_suffix`; // can be 'prefix_suffix'
  const c = `${"a"}${"b"}`; // can be 'ab'
  ```

- [#10037](https://github.com/biomejs/biome/pull/10037) [`f785e8c`](https://github.com/biomejs/biome/commit/f785e8c604879dd3dd17b53aae0e2feef4026c82) Thanks [@minseong0324](https://github.com/minseong0324)! - Fixed [#9810](https://github.com/biomejs/biome/issues/9810): [`noMisleadingReturnType`](https://biomejs.dev/linter/rules/no-misleading-return-type/) no longer reports false positives on a getter with a matching setter in the same namespace.

  ```ts
  class Store {
    get status(): string {
      if (Math.random() > 0.5) return "loading";
      return "idle";
    }
    set status(v: string) {}
  }
  ```

- [#10084](https://github.com/biomejs/biome/pull/10084) [`5e2f90c`](https://github.com/biomejs/biome/commit/5e2f90c045b4bd7006c96a9df123303d6c24e1d8) Thanks [@jiwon79](https://github.com/jiwon79)! - Fixed [#10034](https://github.com/biomejs/biome/issues/10034): [`noUselessEscapeInRegex`](https://biomejs.dev/linter/rules/no-useless-escape-in-regex/) no longer flags escapes of `ClassSetReservedPunctuator` characters (`&`, `!`, `#`, `%`, `,`, `:`, `;`, `<`, `=`, `>`, `@`, `` ` ``, `~`) inside `v`-flag character classes as useless. These characters are reserved as individual code points in `v`-mode, so the escape is required.

  The following pattern is now considered valid:

  ```js
  /[a-z\&]/v;
  ```

- [#10063](https://github.com/biomejs/biome/pull/10063) [`c9ffa16`](https://github.com/biomejs/biome/commit/c9ffa16491c9f8c003eb945796911564fc981b71) Thanks [@Netail](https://github.com/Netail)! - Added extra rule sources from ESLint CSS. `biome migrate eslint` should do a bit better detecting rules in your eslint configurations.

- [#10035](https://github.com/biomejs/biome/pull/10035) [`946b50e`](https://github.com/biomejs/biome/commit/946b50e173e8c89a2d2b303cb159a05cbd068767) Thanks [@Netail](https://github.com/Netail)! - Fixed [#10032](https://github.com/biomejs/biome/issues/10032): [useIframeSandbox](https://biomejs.dev/linter/rules/use-iframe-sandbox/) now flags if there's no initializer value.

- [#9865](https://github.com/biomejs/biome/pull/9865) [`68fb8d4`](https://github.com/biomejs/biome/commit/68fb8d468c01732c4283a336eca42223983df09b) Thanks [@dyc3](https://github.com/dyc3)! - Added the new nursery rule [`useDomNodeTextContent`](https://biomejs.dev/linter/rules/use-dom-node-text-content/), which prefers `textContent` over `innerText` for DOM node text access and destructuring.

  For example, the following snippet triggers the rule:

  ```js
  const foo = node.innerText;
  ```

- [#10023](https://github.com/biomejs/biome/pull/10023) [`bd1e74f`](https://github.com/biomejs/biome/commit/bd1e74fd80b0cadafd091513950275e0ff75d80f) Thanks [@ematipico](https://github.com/ematipico)! - Added a new nursery rule [`noReactNativeDeepImports`](https://biomejs.dev/linter/rules/no-react-native-deep-imports/) that disallows deep imports from the `react-native` package. Internal paths like `react-native/Libraries/...` are not part of the public API and may change between versions.

  For example, the following code triggers the rule:

  ```js
  import View from "react-native/Libraries/Components/View/View";
  ```

- [#9885](https://github.com/biomejs/biome/pull/9885) [`3dce737`](https://github.com/biomejs/biome

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.13]_

### 2.4.12 — Biome CLI v2.4.12

- Date: 2026-04-14
- Version: 2.4.12
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.12
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.12

- **added** — Added the nursery/noIdenticalTestTitle lint rule that disallows using the same title for two describe blocks or two test cases at the same nesting level
- **added** — Added the nursery rule noComponentHookFactories that disallows defining React components or custom hooks inside other functions
- **added** — Added the nursery rule useIframeSandbox which enforces the sandbox attribute for iframe tags
- **added** — Added the nursery rule noJsxNamespace which disallows JSX namespace syntax
- **changed** — Improved the diagnostics for useForOf to better explain the problem, why it matters, and how to fix it
- **changed** — Improved the noGlobalObjectCalls diagnostic to better explain why calling global objects like Math or JSON is invalid and how to fix it
- **changed** — Improved the noMultiStr diagnostic to explain why escaped multiline strings are discouraged and what to use instead
- **changed** — Improved the noSelfCompare diagnostic to better explain why comparing a value to itself is suspicious and what to use for NaN checks
- **fixed** — Fixed issue #9941: Biome now emits a warning diagnostic when a file exceeds the files.maxSize limit
- **fixed** — Fixed issue #9918: useConsistentTestIt no longer panics when applying fixes to chained calls such as test.for([])('x', () => {})
- **fixed** — Fixed issue #9901: the command lint --write is now idempotent when it's run against HTML-ish files that contains scripts and styles
- **fixed** — Fixed issue #9113: Biome now parses and formats @media and other conditional blocks correctly inside embedded CSS snippets
- **fixed** — Fixed issue #9975: Biome now parses nested CSS selectors correctly inside embedded snippets without requiring an explicit &
- **changed** — The noFloatingPromises rule now detects floating promises through cross-module generic wrapper functions

##### 2.4.12

###### Patch Changes

- [#9376](https://github.com/biomejs/biome/pull/9376) [`9701a33`](https://github.com/biomejs/biome/commit/9701a336af701c36d0fe4892f53de049f63f46f4) Thanks [@dyc3](https://github.com/dyc3)! - Added the [`nursery/noIdenticalTestTitle`](https://biomejs.dev/linter/rules/no-identical-test-title) lint rule. This rule disallows using the same title for two `describe` blocks or two test cases at the same nesting level.

  ```js
  describe("foo", () => {});
  describe("foo", () => {
    // invalid: same title as previous describe block
    test("baz", () => {});
    test("baz", () => {}); // invalid: same title as previous test case
  });
  ```

- [#9889](https://github.com/biomejs/biome/pull/9889) [`7ae83f2`](https://github.com/biomejs/biome/commit/7ae83f2f60dc83eae6ef72e4cb1d6f06f3a882de) Thanks [@dyc3](https://github.com/dyc3)! - Improved the diagnostics for [`useForOf`](https://biomejs.dev/linter/rules/use-for-of/) to better explain the problem, why it matters, and how to fix it.

- [#9916](https://github.com/biomejs/biome/pull/9916) [`27dd7b1`](https://github.com/biomejs/biome/commit/27dd7b156b3bf9c461051b9997b277e1fee6fcb2) Thanks [@Jayllyz](https://github.com/Jayllyz)! - Added a new nursery rule [`noComponentHookFactories`](https://biomejs.dev/linter/rules/no-component-hook-factories/), that disallows defining React components or custom hooks inside other functions.

  For example, the following snippets trigger the rule:

  ```jsx
  function createComponent(label) {
    function MyComponent() {
      return <div>{label}</div>;
    }
    return MyComponent;
  }
  ```

  ```jsx
  function Parent() {
    function Child() {
      return <div />;
    }
    return <Child />;
  }
  ```

- [#9980](https://github.com/biomejs/biome/pull/9980) [`098f1ff`](https://github.com/biomejs/biome/commit/098f1fff71e2500da57200a28870f6d6e3d4201d) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9941](https://github.com/biomejs/biome/issues/9941): Biome now emits a `warning` diagnostic when a file exceed the `files.maxSize` limit.

- [#9942](https://github.com/biomejs/biome/pull/9942) [`9956f1d`](https://github.com/biomejs/biome/commit/9956f1d1b53168f8b33792c004f741368c883ff7) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#9918](https://github.com/biomejs/biome/issues/9918): [`useConsistentTestIt`](https://biomejs.dev/linter/rules/use-consistent-test-it/) no longer panics when applying fixes to chained calls such as `test.for([])("x", () => {});`.

- [#9891](https://github.com/biomejs/biome/pull/9891) [`4d9ac51`](https://github.com/biomejs/biome/commit/4d9ac51352482d72d3438f2d514dbeef0edc63e0) Thanks [@dyc3](https://github.com/dyc3)! - Improved the `noGlobalObjectCalls` diagnostic to better explain why calling global objects like `Math` or `JSON` is invalid and how to fix it.

- [#9902](https://github.com/biomejs/biome/pull/9902) [`3f4d103`](https://github.com/biomejs/biome/commit/3f4d1033f7f672be2adba11bb8b7de5d8d3532fc) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9901](https://github.com/biomejs/biome/issues/9901): the command `lint --write` is now idempotent when it's run against HTML-ish files that contains scripts and styles.

- [#9891](https://github.com/biomejs/biome/pull/9891) [`4d9ac51`](https://github.com/biomejs/biome/commit/4d9ac51352482d72d3438f2d514dbeef0edc63e0) Thanks [@dyc3](https://github.com/dyc3)! - Improved the `noMultiStr` diagnostic to explain why escaped multiline strings are discouraged and what to use instead.

- [#9966](https://github.com/biomejs/biome/pull/9966) [`322675e`](https://github.com/biomejs/biome/commit/322675ed97b10b088f6af3ad7843326d2888e9d8) Thanks [@siketyan](https://github.com/siketyan)! - Fixed [#9113](https://github.com/biomejs/biome/issues/9113): Biome now parses and formats `@media` and other conditional blocks correctly inside embedded CSS snippets.

- [#9835](https://github.com/biomejs/biome/pull/9835) [`f8d49d9`](https://github.com/b

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.12]_

### 2.4.11 — Biome CLI v2.4.11

- Date: 2026-04-09
- Version: 2.4.11
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.11
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.11

##### 2.4.11

###### Patch Changes

- [#9350](https://github.com/biomejs/biome/pull/9350) [`4af4a3a`](https://github.com/biomejs/biome/commit/4af4a3a9ca31a598e9836997b7811992eae53387) Thanks [@dyc3](https://github.com/dyc3)! - Added the new nursery rule [useConsistentTestIt](https://biomejs.dev/linter/rules/use-consistent-test-it/) in the `test` domain. The rule enforces consistent use of either `it` or `test` for test functions in Jest/Vitest suites, with separate control for top-level tests and tests inside `describe` blocks.

  Invalid:

  ```js
  test("should fly", () => {}); // Top-level test using 'test' flagged, convert to 'it'

  describe("pig", () => {
    test("should fly", () => {}); // Test inside 'describe' using 'test' flagged, convert to 'it'
  });
  ```

- [#9429](https://github.com/biomejs/biome/pull/9429) [`a2f3f7e`](https://github.com/biomejs/biome/commit/a2f3f7eb3a134ccc6851ed0eec19d1ff1636ec72) Thanks [@ematipico](https://github.com/ematipico)! - Added the new nursery lint rule [`useExplicitReturnType`](https://biomejs.dev/linter/rules/use-explicit-return-type). It reports TypeScript functions and methods that omit an explicit return type.

  ```ts
  function toString(x: any) {
    // rule triggered, it doesn't declare a return type
    return x.toString();
  }
  ```

- [#9828](https://github.com/biomejs/biome/pull/9828) [`9e40844`](https://github.com/biomejs/biome/commit/9e40844261cf7b8c573e340e11e3297ef08bcd60) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9484](https://github.com/biomejs/biome/issues/9484): the formatter no longer panics when formatting files that contain `graphql` tagged template literals combined with parenthesized expressions.

- [#9886](https://github.com/biomejs/biome/pull/9886) [`e7c681e`](https://github.com/biomejs/biome/commit/e7c681ecbb6aed471c914167f5d067d327792f44) Thanks [@ematipico](https://github.com/ematipico)! - Fixed an issue where, occasionally, some bindings and references were not properly tracked, causing false positives from [`noUnusedVariables`](https://biomejs.dev/linter/rules/no-unused-variables/) and [`noUndeclaredVariables`](https://biomejs.dev/linter/rules/no-undeclared-variables/) in Svelte, Vue, and Astro files.

- [#9760](https://github.com/biomejs/biome/pull/9760) [`5b16d18`](https://github.com/biomejs/biome/commit/5b16d187ba63800f4b6ea5057d551ae3f2fbc68c) Thanks [@myx0m0p](https://github.com/myx0m0p)! - Fixed [#4093](https://github.com/biomejs/biome/issues/4093): the [`noDelete`](https://biomejs.dev/linter/rules/no-delete/) rule no longer triggers for `delete process.env.FOO`, since `delete` is the documented way to remove environment variables in Node.js.

- [#9799](https://github.com/biomejs/biome/pull/9799) [`2af8efd`](https://github.com/biomejs/biome/commit/2af8efd348cfa992bc7d35683de55bb8cc583260) Thanks [@minseong0324](https://github.com/minseong0324)! - Added the rule [`noMisleadingReturnType`](https://biomejs.dev/linter/rules/no-misleading-return-type/). The rule detects when a function's return type annotation is wider than what the implementation actually returns.

  ```ts
  // Flagged: `: string` is wider than `"loading" | "idle"`
  function getStatus(b: boolean): string {
    if (b) return "loading";
    return "idle";
  }
  ```

- [#9880](https://github.com/biomejs/biome/pull/9880) [`7f67749`](https://github.com/biomejs/biome/commit/7f67749e77af6e5af3dfc72a02bb99718695612e) Thanks [@dyc3](https://github.com/dyc3)! - Improved the diagnostics for [`useFind`](https://biomejs.dev/linter/rules/use-find/) to better explain the problem, why it matters, and how to fix it.

- [#9755](https://github.com/biomejs/biome/pull/9755) [`bff7bdb`](https://github.com/biomejs/biome/commit/bff7bdb1355cdf7d219a288e31c5c5a0357e3aad) Thanks [@ematipico](https://github.com/ematipico)! - Improved performance of fix-all operations (`--write`). Biome is now smarter when it runs lint rules and assist actions. First, it runs only rules that have code fixes

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.11]_

### 2.4.10 — Biome CLI v2.4.10

- Date: 2026-03-30
- Version: 2.4.10
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.10
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.10

##### 2.4.10

###### Patch Changes

- [#8838](https://github.com/biomejs/biome/pull/8838) [`f3a6a6b`](https://github.com/biomejs/biome/commit/f3a6a6ba446aaac59119453e5becd657e509e22f) Thanks [@baeseokjae](https://github.com/baeseokjae)! - Added new lint nursery rule [`noImpliedEval`](https://biomejs.dev/linter/rules/no-implied-eval/).

  The rule detects implied `eval()` usage through functions like `setTimeout`, `setInterval`, and `setImmediate` when called with string arguments.

  ```js
  // Invalid
  setTimeout("alert('Hello');", 100);

  // Valid
  setTimeout(() => alert("Hello"), 100);
  ```

- [#9320](https://github.com/biomejs/biome/pull/9320) [`93c3b6c`](https://github.com/biomejs/biome/commit/93c3b6ca52d4966db2c5b9c37d73c049ffccd1a5) Thanks [@taberoajorge](https://github.com/taberoajorge)! - Fixed [#7664](https://github.com/biomejs/biome/issues/7664): [`noUnusedVariables`](https://biomejs.dev/linter/rules/no-unused-variables/) no longer reports false positives for TypeScript namespace declarations that participate in declaration merging with an exported or used value declaration (`const`, `function`, or `class`) of the same name. The reverse direction is also handled: a value declaration merged with an exported namespace is no longer flagged.

- [#9630](https://github.com/biomejs/biome/pull/9630) [`1dd4a56`](https://github.com/biomejs/biome/commit/1dd4a560a567d0a47784f9d5014ee8bc073b6912) Thanks [@raashish1601](https://github.com/raashish1601)! - Fixed [#9629](https://github.com/biomejs/biome/issues/9629): [`noNegationElse`](https://biomejs.dev/linter/rules/no-negation-else/) now keeps ternary branch comments attached to the correct branch when applying its fixer.

- [#9216](https://github.com/biomejs/biome/pull/9216) [`04243b0`](https://github.com/biomejs/biome/commit/04243b0535dfb65fd106f5a760ab24668786dcaf) Thanks [@FrederickStempfle](https://github.com/FrederickStempfle)! - Fixed [#9061](https://github.com/biomejs/biome/issues/9061): `noProcessEnv` now also detects `process.env` when `process` is imported from the `"process"` or `"node:process"` modules.

  Previously, only the global `process` object was flagged:

  ```js
  import process from "node:process";
  // This was not flagged, but now it is:
  console.log(process.env.NODE_ENV);
  ```

- [#9692](https://github.com/biomejs/biome/pull/9692) [`61b7ec5`](https://github.com/biomejs/biome/commit/61b7ec5afd5949c109949557ace5508da1ea7ed9) Thanks [@mkosei](https://github.com/mkosei)! - Fixed Svelte `#each` destructuring parsing and formatting for nested patterns such as `[key, { a, b }]`.

- [#9627](https://github.com/biomejs/biome/pull/9627) [`06a0f35`](https://github.com/biomejs/biome/commit/06a0f351d4885385f90f64604b6f391e5012f2c3) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#191](https://github.com/biomejs/biome-zed/issues/191): Improved the performance of how the Biome Language Server pulls code actions and diagnostics.

  Before, code actions were pulled and computed all at once in one request. This approach couldn't work in big files, and caused Biome to stale and have CPU usage spikes up to 100%.

  Now, code actions are pulled and computed lazily, and Biome won't choke anymore in big files.

- [#9643](https://github.com/biomejs/biome/pull/9643) [`5bfee36`](https://github.com/biomejs/biome/commit/5bfee368e3c3482d815fe43c166a40a71be7b731) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#9347](https://github.com/biomejs/biome/issues/9347): [`useVueValidVBind`](https://biomejs.dev/linter/rules/use-vue-valid-v-bind/) no longer reports valid object bindings like `v-bind="props"`.

- [#9627](https://github.com/biomejs/biome/pull/9627) [`06a0f35`](https://github.com/biomejs/biome/commit/06a0f351d4885385f90f64604b6f391e5012f2c3) Thanks [@ematipico](https://github.com/ematipico)! - Fixed assist diagnostics being invisible when using `--diagnostic-level=error`. Enforced assist violations (e.g. `useSortedKeys`) were filtered out before being promot

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.10]_

### 2.4.9 — Biome CLI v2.4.9

- Date: 2026-03-25
- Version: 2.4.9
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.9
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.9

##### 2.4.9

###### Patch Changes

- [#9315](https://github.com/biomejs/biome/pull/9315) [`085d324`](https://github.com/biomejs/biome/commit/085d324b963f12b4ceaf901c36875b196d383cc4) Thanks [@ematipico](https://github.com/ematipico)! - Added a new nursery CSS rule [`noDuplicateSelectors`](https://biomejs.dev/linter/rules/no-duplicate-selectors/), that disallows duplicate selector lists within the same at-rule context.

  For example, the following snippet triggers the rule because the second selector and the first selector are the same:

  ```css
  /* First selector */
  .x .y .z {
  }

  /* Second selector */
  .x {
    .y {
      .z {
      }
    }
  }
  ```

- [#9567](https://github.com/biomejs/biome/pull/9567) [`b7ab931`](https://github.com/biomejs/biome/commit/b7ab931be14f5e61e5716a345c7ef0da59abb016) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#7211](https://github.com/biomejs/biome/issues/7211): [`useOptionalChain`](https://biomejs.dev/linter/rules/use-optional-chain/) now detects negated logical OR chains. The following code is now considered invalid:

  ```js
  !foo || !foo.bar;
  ```

- [#8670](https://github.com/biomejs/biome/pull/8670) [`607ebf9`](https://github.com/biomejs/biome/commit/607ebf9eacec1480f57e06deea46c99174b000a2) Thanks [@tt-a1i](https://github.com/tt-a1i)! - Fixed [#8345](https://github.com/biomejs/biome/issues/8345): [`useAdjacentOverloadSignatures`](https://biomejs.dev/linter/rules/use-adjacent-overload-signatures/) no longer reports false positives for static and instance methods with the same name. Static methods and instance methods are now treated as separate overload groups.

  ```ts
  class Kek {
    static kek(): number {
      return 0;
    }
    another(): string {
      return "";
    }
    kek(): number {
      return 1;
    } // no longer reported as non-adjacent
  }
  ```

- [#9476](https://github.com/biomejs/biome/pull/9476) [`97b80a8`](https://github.com/biomejs/biome/commit/97b80a8b017dc3a56542bfe01b6dadab081729bf) Thanks [@masterkain](https://github.com/masterkain)! - Fixed [`#9475`](https://github.com/biomejs/biome/issues/9475): Fixed a panic when Biome analyzed ambient TypeScript modules containing class constructor, getter, or setter signatures that reference local type aliases. Biome now handles these declarations without crashing during semantic analysis.

- [#9553](https://github.com/biomejs/biome/pull/9553) [`0cd5298`](https://github.com/biomejs/biome/commit/0cd5298fecae7961c458b026b37f80a8ab98880f) Thanks [@dyc3](https://github.com/dyc3)! - Fixed a bug where enabling the rules of a whole group, would enable rules that belonged to a domain under the same group.

  For example, `linter.rules.correctness = "error"` no longer enables React- or Qwik-specific correctness rules unless `linter.domains.react`, `linter.domains.qwik`, or an explicit rule config also enables them, or their relative dependencies are installed.

- [#9586](https://github.com/biomejs/biome/pull/9586) [`4cafb71`](https://github.com/biomejs/biome/commit/4cafb71b9951b935d4cb08da20916242cfa9f519) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#8828](https://github.com/biomejs/biome/issues/8828): Grit patterns using `export { $foo } from $source` now match named re-exports in JavaScript and TypeScript files.

- [#9550](https://github.com/biomejs/biome/pull/9550) [`d4e3d6e`](https://github.com/biomejs/biome/commit/d4e3d6e9241e3db7340dd3d236fcbd65c24f5673) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#9548](https://github.com/biomejs/biome/issues/9548): Biome now parses conditional expressions whose consequent is an arrow function returning a parenthesized object expression.

- [#8696](https://github.com/biomejs/biome/pull/8696) [`a7c19cc`](https://github.com/biomejs/biome/commit/a7c19ccfebafb6d7aa1156d4e9a9ec057ba370e9) Thanks [@Faizanq](https://github.com/Faizanq)! - Fixed [#8685](https://github.com/biomejs/biome/issues/8685) where `noUselessLoneBlockStatements` would remove empty block

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.9]_

### 2.4.8 — Biome CLI v2.4.8

- Date: 2026-03-18
- Version: 2.4.8
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.8
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.8

##### 2.4.8

###### Patch Changes

- [#9488](https://github.com/biomejs/biome/pull/9488) [`bc709f6`](https://github.com/biomejs/biome/commit/bc709f6e45a4cafb81636a41f9fb547ea2ead6b7) Thanks [@mvanhorn](https://github.com/mvanhorn)! - Fixed [#9463](https://github.com/biomejs/biome/issues/9463): the "Biome found a configuration file outside of the current working directory" diagnostic now includes the configuration file path and the working directory, giving users actionable information to debug the issue.

- [#9527](https://github.com/biomejs/biome/pull/9527) [`2f8bf80`](https://github.com/biomejs/biome/commit/2f8bf80d7f5736d34660123ba51bddca72a3849d) Thanks [@mdm317](https://github.com/mdm317)! - Fixed [#8959](https://github.com/biomejs/biome/issues/8959): Fixed TypeScript arrow function formatting when a comment appears after `=>`.

- [#9525](https://github.com/biomejs/biome/pull/9525) [`e7b3b10`](https://github.com/biomejs/biome/commit/e7b3b104590fd13b38a2ab044a297fecbcb49e8c) Thanks [@ViniciusDev26](https://github.com/ViniciusDev26)! - Added the rule [`noDrizzleUpdateWithoutWhere`](https://biomejs.dev/linter/rules/no-drizzle-update-without-where/) to prevent accidental full-table updates when using Drizzle ORM without a `.where()` clause.

- [#9531](https://github.com/biomejs/biome/pull/9531) [`1302740`](https://github.com/biomejs/biome/commit/13027406436ae24022bedfff3fddec264d3f985c) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9187](https://github.com/biomejs/biome/issues/9187): Astro frontmatter containing regex literals with quotes (`/'/`, `/"/`) or dashes (`/---/`) no longer causes parse errors.

- [#9535](https://github.com/biomejs/biome/pull/9535) [`b630d93`](https://github.com/biomejs/biome/commit/b630d9369037caeecd0f5bc25c69831a0674422f) Thanks [@leno23](https://github.com/leno23)! - Fixed [#9524](https://github.com/biomejs/biome/issues/9524): remove extra space before `>` when `bracketSameLine` is true and the self-closing slash is absent in HTML formatter.

- [#9537](https://github.com/biomejs/biome/pull/9537) [`81e6306`](https://github.com/biomejs/biome/commit/81e630683c899f5fa147e839aa8559365ae0ac75) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9238](https://github.com/biomejs/biome/issues/9238): The HTML parser no longer incorrectly reports `---` inside element content (e.g. `<td>---</td>`) as an "Unexpected value or character" error.

- [#9532](https://github.com/biomejs/biome/pull/9532) [`4b64145`](https://github.com/biomejs/biome/commit/4b641457bb4555dbc25d081effec28a66b0f1272) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9117](https://github.com/biomejs/biome/issues/9117): `biome check --write` no longer falsely reports Svelte and Vue files as changed when `html.formatter.indentScriptAndStyle` is enabled and the files are already correctly formatted.

- [#9528](https://github.com/biomejs/biome/pull/9528) [`61451ef`](https://github.com/biomejs/biome/commit/61451ef11e466dd22cf8815d8a4165c00f847ef2) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9341](https://github.com/biomejs/biome/issues/9341): Fixed an LSP crash that could corrupt file content when saving with format-on-save enabled.

- [#9538](https://github.com/biomejs/biome/pull/9538) [`794f79c`](https://github.com/biomejs/biome/commit/794f79c3d61d0010549f8f34b05c0aaa5eb2b1c3) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9279](https://github.com/biomejs/biome/issues/9279): The rule [`noSubstr`](https://biomejs.dev/linter/rules/no-substr/) now detects `.substr()` and `.substring()` calls in all expression contexts, including variable declarations, function arguments, return statements, and arrow function bodies.

- [#9462](https://github.com/biomejs/biome/pull/9462) [`c23272c`](https://github.com/biomejs/biome/commit/c23272c9bef588b4fdccc4be05ce3549b5f2407c) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9370](https://github.com/biomejs/biome/issues/9370): The re

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.8]_

### 2.4.7 — Biome CLI v2.4.7

- Date: 2026-03-13
- Version: 2.4.7
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.7
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.7

##### 2.4.7

###### Patch Changes

- [#9318](https://github.com/biomejs/biome/pull/9318) [`3ac98eb`](https://github.com/biomejs/biome/commit/3ac98eb0fa492fce37e87e14c2c4b7016475195c) Thanks [@ematipico](https://github.com/ematipico)! - Added new nursery lint rule `useBaseline` for CSS. The rule reports when CSS properties, property values, at-rules, media conditions, functions, or pseudo-selectors are not part of the configured [Baseline](https://developer.mozilla.org/en-US/docs/Glossary/Baseline/Compatibility) tier.

  For example, _at the time of writing_, the rule will trigger for the use of `accent-color` because it has limited availability:

  ```css
  a {
    accent-color: bar;
  }
  ```

- [#9272](https://github.com/biomejs/biome/pull/9272) [`2de8362`](https://github.com/biomejs/biome/commit/2de83626fb411e7468fdba6fae90609f9db42630) Thanks [@terror](https://github.com/terror)! - Added the nursery rule [`useImportsFirst`](https://biomejs.dev/linter/rules/use-imports-first/) that enforces all import statements appear before any non-import statements in a module. Inspired by the eslint-plugin-import [`import/first`](https://github.com/import-js/eslint-plugin-import/blob/HEAD/docs/rules/first.md) rule.

  ```js
  // Invalid
  import { foo } from "foo";
  const bar = 1;
  import { baz } from "baz"; // ← flagged

  // Valid
  import { foo } from "foo";
  import { baz } from "baz";
  const bar = 1;
  ```

- [#9285](https://github.com/biomejs/biome/pull/9285) [`93ea495`](https://github.com/biomejs/biome/commit/93ea495fa215d032d7b96ecc52a8e4c86a421805) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [`noUndeclaredVariables`](https://biomejs.dev/linter/rules/no-undeclared-variables/) from erroneously flagging props only used in the template section in Vue SFCs

- [#9435](https://github.com/biomejs/biome/pull/9435) [`6c5a8f2`](https://github.com/biomejs/biome/commit/6c5a8f2728dd21d58c164bcdf616e3c803eda475) Thanks [@siketyan](https://github.com/siketyan)! - Fixed [#9432](https://github.com/biomejs/biome/issues/9432): Values referenced as a JSX element in Astro/Vue/Svelte templates are now correctly detected; `noUnusedImports` and `useImportType` rules no longer reports these values as false positives.

- [#9362](https://github.com/biomejs/biome/pull/9362) [`fc9ca4c`](https://github.com/biomejs/biome/commit/fc9ca4c03f484bfd90302269c4d577a3fd6c89d0) Thanks [@Netail](https://github.com/Netail)! - Extra rule source references. `biome migrate eslint` should do a bit better detecting rules in your eslint configurations.

- [#9392](https://github.com/biomejs/biome/pull/9392) [`b881fea`](https://github.com/biomejs/biome/commit/b881fea44d93781ca1cac9db4e5fcfd81d35d777) Thanks [@g-ortuno](https://github.com/g-ortuno)! - Fixed [biomejs/biome-vscode#959](https://github.com/biomejs/biome-vscode/issues/959): LSP now correctly resolves project directory when `configurationPath` points to a configuration file outside the workspace.

- [#9420](https://github.com/biomejs/biome/pull/9420) [`a1c46af`](https://github.com/biomejs/biome/commit/a1c46afd2567dded10e5e08e6e09fcba01bb757c) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9385](https://github.com/biomejs/biome/issues/9385): [`noUselessEscapeInString`](https://biomejs.dev/linter/rules/no-useless-escape-in-string/) no longer incorrectly flags valid CSS hex escapes (e.g. `\e7bb`) as useless. The rule now recognizes all hex digits (`0-9`, `a-f`, `A-F`) as valid escape characters in CSS strings.

- [#9416](https://github.com/biomejs/biome/pull/9416) [`f2581b8`](https://github.com/biomejs/biome/commit/f2581b8eb1d2c1f3ba08c1237a7a6698128648f7) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9131](https://github.com/biomejs/biome/issues/9131), [#9112](https://github.com/biomejs/biome/issues/9112), [#9166](https://github.com/biomejs/biome/issues/9166): the formatter no longer crashes or produces corrupt output when a JS file with `experimentalEmbeddedSnippetsEnabled` contains

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.7]_

### 2.4.6 — Biome CLI v2.4.6

- Date: 2026-03-05
- Version: 2.4.6
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.6
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.6

##### 2.4.6

###### Patch Changes

- [#9305](https://github.com/biomejs/biome/pull/9305) [`40869b5`](https://github.com/biomejs/biome/commit/40869b5a698de5e0d2c06bc7587a9cad8c0389c5) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#4946](https://github.com/biomejs/biome/issues/4946): `noUnreachable` no longer reports code inside `finally` blocks as unreachable when there is a `break`, `continue`, or `return` in the corresponding `try` body.

- [#9303](https://github.com/biomejs/biome/pull/9303) [`464910c`](https://github.com/biomejs/biome/commit/464910c06058454a0a0ed08998e1b32cb4a6ca67) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#2786](https://github.com/biomejs/biome/issues/2786): The formatter no longer produces different output on subsequent runs when a `case` clause has a trailing line comment followed by a single block statement.

- [#9324](https://github.com/biomejs/biome/pull/9324) [`6294aa2`](https://github.com/biomejs/biome/commit/6294aa2e2710e90a05ed53edfc4dd80e3c4cbd9a) Thanks [@arendjr](https://github.com/arendjr)! - Fixed [`#7730`](https://github.com/biomejs/biome/issues/7730): [`useAnchorContent`](https://biomejs.dev/linter/rules/use-anchor-content/) now recognises SolidJS's `innerHTML` the same way as React's `dangerouslySetInnerHTML`.

- [#9298](https://github.com/biomejs/biome/pull/9298) [`1003229`](https://github.com/biomejs/biome/commit/1003229853c80569751137b6f52dcc1b08aed659) Thanks [@Netail](https://github.com/Netail)! - Fixed [`#9296`](https://github.com/biomejs/biome/issues/9296), so comments are moved along with the attributes in the useSortedAttributes assist rule code fix.

- [#9329](https://github.com/biomejs/biome/pull/9329) [`855b451`](https://github.com/biomejs/biome/commit/855b45125ad33933066eb363f706e1f00dc149d2) Thanks [@dyc3](https://github.com/dyc3)! - Improved performance of [`noEmptyBlockStatements`](https://biomejs.dev/linter/rules/no-empty-block-statements/). The rule is now smarter about short-circuiting its logic.

- [#9326](https://github.com/biomejs/biome/pull/9326) [`85dfe9b`](https://github.com/biomejs/biome/commit/85dfe9b00b820fee0ad936a54328491446e085f5) Thanks [@dyc3](https://github.com/dyc3)! - Improved performance for [`noImportCycles`](https://biomejs.dev/linter/rules/no-import-cycles/) by explicitly excluding node_modules from the cycle detection. The performance improvement is directly proportional to how big your dependency tree is.

- [#9323](https://github.com/biomejs/biome/pull/9323) [`d5ee469`](https://github.com/biomejs/biome/commit/d5ee4690bba0a3bb8a97da029732afde56cd4cd7) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9217](https://github.com/biomejs/biome/issues/9217) and [biomejs/biome-vscode#959](https://github.com/biomejs/biome-vscode/issues/959), where the Biome language server didn't correctly resolve the editor setting `configurationPath` when the provided value is a relative path.

- [#9302](https://github.com/biomejs/biome/pull/9302) [`86fbc70`](https://github.com/biomejs/biome/commit/86fbc70e8f5a63fd9ece11a99b2684c25c301dba) Thanks [@sepagian](https://github.com/sepagian)! - Fixed [#9300](https://github.com/biomejs/biome/issues/9300): Lowercase component member expressions like `<form.Field>` in Svelte and Astro files are now correctly formatted.

  ```diff
  -<form .Field></form.Field>
  +<form.Field></form.Field>
  ```



##### What's Changed
* fix(js_analyze): move comments with useSortedAttributes action by @Netail in https://github.com/biomejs/biome/pull/9298
* fix(formatter): switch case comments by @ematipico in https://github.com/biomejs/biome/pull/9303
* refactor(markdown-parser): promote list structural tokens from skipped trivia to explicit CST nodes by @jfmcdowell in https://github.com/biomejs/biome/pull/9274
* fix(noUnreachable): handle dead implicit jumps in finally by @ematipico in https://github.com/biomejs/biome/pull/9305
* refactor(markdown-parser): align newline/prescan paragraph-break checks by

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.6]_

### 2.4.5 — Biome CLI v2.4.5

- Date: 2026-03-02
- Version: 2.4.5
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.5
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.5

##### 2.4.5

###### Patch Changes

- [#9185](https://github.com/biomejs/biome/pull/9185) [`e43e730`](https://github.com/biomejs/biome/commit/e43e730f603bb360d2993842d1b883a787224c29) Thanks [@dyc3](https://github.com/dyc3)! - Added the nursery rule `useVueScopedStyles` for Vue SFCs. This rule enforces that `<style>` blocks have the `scoped` attribute (or `module` for CSS Modules), preventing style leakage and conflicts between components.

- [#9184](https://github.com/biomejs/biome/pull/9184) [`49c8fde`](https://github.com/biomejs/biome/commit/49c8fdecf69089e1be9e58fa52f6b72fd54ce08e) Thanks [@chocky335](https://github.com/chocky335)! - Improved plugin performance by batching all plugins into a single syntax visitor with a kind-to-plugin lookup map, reducing per-node dispatch overhead from O(N) to O(1) where N is the number of plugins.

- [#9283](https://github.com/biomejs/biome/pull/9283) [`071c700`](https://github.com/biomejs/biome/commit/071c70053b63c60bccc170a9d84b8b3f08060a94) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [`noUndeclaredVariables`](https://biomejs.dev/linter/rules/no-undeclared-variables/) erroneously flagging functions and variables defined in the `<script setup>` section of Vue SFCs.

- [#9221](https://github.com/biomejs/biome/pull/9221) [`4612133`](https://github.com/biomejs/biome/commit/4612133cd9677cda3c2eedb52fd8b46be579410d) Thanks [@ematipico](https://github.com/ematipico)! - Fixed an issue where the JSON reporter didn't contain the duration of the command.

- [#9294](https://github.com/biomejs/biome/pull/9294) [`1805c8f`](https://github.com/biomejs/biome/commit/1805c8fb18081e88d81da2a6a542f7d69cd317a2) Thanks [@Netail](https://github.com/Netail)! - Extra rule source reference. `biome migrate eslint` should do a bit better detecting rules in your eslint configurations.

- [#9178](https://github.com/biomejs/biome/pull/9178) [`101b3bb`](https://github.com/biomejs/biome/commit/101b3bb2658dd2fb7ce562f82b784fd5d068df62) Thanks [@Bertie690](https://github.com/Bertie690)! - Fixed [#9172](https://github.com/biomejs/biome/issues/9172) and [#9168](https://github.com/biomejs/biome/issues/9168):
  Biome now considers more constructs as valid test assertions.

  Previously, [`assert`](https://vitest.dev/api/assert.html), [`expectTypeOf`](https://vitest.dev/api/expect-typeof.html) and [`assertType`](https://vitest.dev/api/assert-type.html)
  were not recognized as valid assertions by Biome's linting rules, producing false positives in [`lint/nursery/useExpect`](https://biomejs.dev/linter/rules/use-expect) and other similar rules.

  Now, these rules will no longer produce errors in test cases that used these constructs instead of `expect`:

  ```ts
  import { expectTypeOf, assert, assertType } from "vitest";

  const myStr = "Hello from vitest!";
  it("should be a string", () => {
    expectTypeOf(myStr).toBeString();
  });
  test("should still be a string", () => {
    assertType<string>(myStr);
  });
  it.todo("should still still be a string", () => {
    assert(typeof myStr === "string");
  });
  ```

- [#9173](https://github.com/biomejs/biome/pull/9173) [`32dad2d`](https://github.com/biomejs/biome/commit/32dad2deb5373950ee52f0e1c544b3313bbe6b52) Thanks [@dyc3](https://github.com/dyc3)! - Added parsing support for Svelte's new [comments-in-tags](https://github.com/sveltejs/svelte/pull/17671) feature.

  The HTML parser will now accept JS style comments in tags in Svelte files.

  ```svelte
  <button
    // single-line comment
    onclick={doTheThing}
  >click me</button>

  <div
    /* block comment */
    class="foo"
  >text</div>
  ```

- [#8952](https://github.com/biomejs/biome/pull/8952) [`1d2ca15`](https://github.com/biomejs/biome/commit/1d2ca15f85f6968b4e4ad262a65aadc76fc54f50) Thanks [@pkallos](https://github.com/pkallos)! - Added the nursery rule [`useNullishCoalescing`](https://biomejs.dev/linter/rules/use-nullish-coalescing/). This rule suggests using the nullish coalescing operator (`??`) instea

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.5]_

### 2.4.4 — Biome CLI v2.4.4

- Date: 2026-02-20
- Version: 2.4.4
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.4
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.4

##### 2.4.4

###### Patch Changes

- [#9150](https://github.com/biomejs/biome/pull/9150) [`6946835`](https://github.com/biomejs/biome/commit/6946835b2c12078b326da5b51e4e4c62fbba525c) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#9138](https://github.com/biomejs/biome/issues/9138): Astro files containing `---` in HTML content (e.g., `<h1>---Hi</h1>`) are now parsed correctly, both when a frontmatter block is present and when there is no frontmatter at all.

- [#9150](https://github.com/biomejs/biome/pull/9150) [`aa6f837`](https://github.com/biomejs/biome/commit/aa6f8370ae7e4694901d04914689611c9f42ad1a) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#9138](https://github.com/biomejs/biome/issues/9138): The HTML parser incorrectly failing to parse bracket characters (`[` and `]`) in text content (e.g. `<div>[Foo]</div>`).

- [#9151](https://github.com/biomejs/biome/pull/9151) [`c0d4b0c`](https://github.com/biomejs/biome/commit/c0d4b0c06dac60ff2a7f52de38adad3ca37dffc4) Thanks [@dyc3](https://github.com/dyc3)! - Fixed parsing of Svelte directive keywords (`use`, `style`) when used as plain text content in HTML/Svelte files. Previously, `<p>use JavaScript</p>` or `<p>style it</p>` would incorrectly produce a bogus element instead of proper text content.

- [#9162](https://github.com/biomejs/biome/pull/9162) [`7f1e060`](https://github.com/biomejs/biome/commit/7f1e0608099cb1245a29e80eee671e181e9e470b) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#9161](https://github.com/biomejs/biome/issues/9161): The Vue parser now correctly handles colon attributes like `xlink:href` and `xmlns:xlink` by parsing them as single attributes instead of splitting them into separate tokens.

- [#9164](https://github.com/biomejs/biome/pull/9164) [`458211b`](https://github.com/biomejs/biome/commit/458211bd5c9167c474f1411f48167999fb9f4b9f) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#9161](https://github.com/biomejs/biome/issues/9161): The `noAssignInExpressions` rule no longer flags assignments in Vue v-on directives (e.g., `@click="counter += 1"`). Assignments in event handlers are idiomatic Vue patterns and are now skipped by the rule.



##### What's Changed
* chore(scss): cherry-picks by @denbezrukov in https://github.com/biomejs/biome/pull/9149
* fix(parse/html): don't lex square brackets as special tokens in contexts where they don't mean anything by @dyc3 in https://github.com/biomejs/biome/pull/9150
* refactor(parse/html): use token_set! instead of matches! for svelte keywords and directives helpers by @dyc3 in https://github.com/biomejs/biome/pull/9148
* fix(parse/html): don't lex "use" as `USE_KW` when in html text content by @dyc3 in https://github.com/biomejs/biome/pull/9151
* feat(css): enhance SCSS qualified name detection by @denbezrukov in https://github.com/biomejs/biome/pull/9159
* chore(html): more html benchmarks by @dyc3 in https://github.com/biomejs/biome/pull/8153
* fix(parse/html/vue): don't treat `:` as special token outside of vue directives by @dyc3 in https://github.com/biomejs/biome/pull/9162
* feat(lint/vue): automatically ignore `noAssignInExpressions` for vue v-on directives by @dyc3 in https://github.com/biomejs/biome/pull/9164
* ci: release by @github-actions[bot] in https://github.com/biomejs/biome/pull/9160


**Full Changelog**: https://github.com/biomejs/biome/compare/@biomejs/biome@2.4.3...@biomejs/biome@2.4.4

### 2.4.3 — Biome CLI v2.4.3

- Date: 2026-02-19
- Version: 2.4.3
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.3
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.3

##### 2.4.3

###### Patch Changes

- [#9120](https://github.com/biomejs/biome/pull/9120) [`aa40fc2`](https://github.com/biomejs/biome/commit/aa40fc237a1379188edcbbbf4dc37fd7de7c58f5) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9109](https://github.com/biomejs/biome/issues/9109), where the GitHub reporter wasn't correctly enabled when `biome ci` runs on GitHub Actions.

- [#9128](https://github.com/biomejs/biome/pull/9128) [`8ca3f7f`](https://github.com/biomejs/biome/commit/8ca3f7fcd1b0041fd7ade381032dfbb0f9693a41) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#9107](https://github.com/biomejs/biome/issues/9107): The HTML parser can now correctly parse Astro directives (client/set/class/is/server), which fixes the formatting for Astro directives.

- [#9124](https://github.com/biomejs/biome/pull/9124) [`f5b0e8d`](https://github.com/biomejs/biome/commit/f5b0e8d0761c08d79d6cb1ad8df33da8605f20a9) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#8882](https://github.com/biomejs/biome/issues/8882) and [#9108](https://github.com/biomejs/biome/issues/9108): The Astro frontmatter lexer now correctly identifies the closing `---` fence when the frontmatter contains multi-line block comments with quote characters, strings that mix quote types (e.g. `"it's"`), or escaped quote characters (e.g. `"\"`).

- [#9142](https://github.com/biomejs/biome/pull/9142) [`3ca066b`](https://github.com/biomejs/biome/commit/3ca066bbb73cfbe1a1bcb1c9fc76f4a79966efc0) Thanks [@THernandez03](https://github.com/THernandez03)! - Fixed [#9141](https://github.com/biomejs/biome/issues/9141): The `noUnknownAttribute` rule no longer reports `closedby` as an unknown attribute on `<dialog>` elements.

- [#9126](https://github.com/biomejs/biome/pull/9126) [`792013e`](https://github.com/biomejs/biome/commit/792013eb767188608d0b6dd4dfa24413832dcb93) Thanks [@ematipico](https://github.com/ematipico)! - Added missing Mocha globals to the `Test` domain: `context`, `run`, `setup`, `specify`, `suite`, `suiteSetup`, `suiteTeardown`, `teardown`, `xcontext`, `xdescribe`, `xit`, and `xspecify`. These are injected by Mocha's BDD and TDD interfaces and were previously flagged as undeclared variables in projects using Mocha.

- [#8855](https://github.com/biomejs/biome/pull/8855) [`6918c9e`](https://github.com/biomejs/biome/commit/6918c9e2bf4da19b3ac9f772272bc1a28f454fc1) Thanks [@ruidosujeira](https://github.com/ruidosujeira)! - Fixed [#8840](https://github.com/biomejs/biome/issues/8840). Now the Biome CSS parser correctly parses `not + scroll-state` inside `@container` queries.

- [#9111](https://github.com/biomejs/biome/pull/9111) [`4fb55cf`](https://github.com/biomejs/biome/commit/4fb55cf998a3d41c4451679fe359ebec47692f5d) Thanks [@Jayllyz](https://github.com/Jayllyz)! - Slightly improved performance of [`noIrregularWhitespace`](https://biomejs.dev/linter/rules/no-irregular-whitespace/) by adding early return optimization and simplifying character detection logic.

- [#8975](https://github.com/biomejs/biome/pull/8975) [`086a0c5`](https://github.com/biomejs/biome/commit/086a0c5c35a147df13197642bead23aa7df18a84) Thanks [@FrankFMY](https://github.com/FrankFMY)! - Fixed [#8478](https://github.com/biomejs/biome/issues/8478): [`useDestructuring`](https://biomejs.dev/linter/rules/use-destructuring/) no longer suggests destructuring when the variable has a type annotation, like `const foo: string = object.foo`.



##### What's Changed
* perf(lint): optimize noIrregularWhitespace rule by @Jayllyz in https://github.com/biomejs/biome/pull/9111
* fix(cli): use github reporter in github actions env by @ematipico in https://github.com/biomejs/biome/pull/9120
* fix: add more globals for mocha by @ematipico in https://github.com/biomejs/biome/pull/9126
* fix(parse/html): astro fence by @ematipico in https://github.com/biomejs/biome/pull/9124
* fix(linter): skip useDestructuring for variables with type annotations by @FrankFMY in https://github.com/biomejs/biome/pull/

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.3]_

### 2.4.2 — Biome CLI v2.4.2

- Date: 2026-02-16
- Version: 2.4.2
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.2
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.2

##### 2.4.2

###### Patch Changes

- [#9103](https://github.com/biomejs/biome/pull/9103) [`fc9850c`](https://github.com/biomejs/biome/commit/fc9850c4858f6d1a9c1314d782fd561a6c2253c3) Thanks [@dyc3](https://github.com/dyc3)! - Fixed [#9098](https://github.com/biomejs/biome/issues/9098): `useImportType` no longer incorrectly flags imports used in Svelte control flow blocks (`{#if}`, `{#each}`, `{#await}`, `{#key}`) as type-only imports.

- [#9106](https://github.com/biomejs/biome/pull/9106) [`f4b7296`](https://github.com/biomejs/biome/commit/f4b729679e0ff4452758e026e053bb7b08add4b2) Thanks [@dyc3](https://github.com/dyc3)! - Updated rule source metadata for rules from `html-eslint`.

- [#8960](https://github.com/biomejs/biome/pull/8960) [`4a5ff40`](https://github.com/biomejs/biome/commit/4a5ff4034d8406d7de28aa6ce8095987c3fef547) Thanks [@abossenbroek](https://github.com/abossenbroek)! - Added the nursery rule [`noConditionalExpect`](https://biomejs.dev/linter/rules/no-conditional-expect/). This rule disallows conditional `expect()` calls inside tests, which can lead to tests that silently pass when assertions never run.

  ```js
  // Invalid - conditional expect may not run
  test("conditional", async ({ page }) => {
    if (someCondition) {
      await expect(page).toHaveTitle("Title");
    }
  });

  // Valid - unconditional expect
  test("unconditional", async ({ page }) => {
    await expect(page).toHaveTitle("Title");
  });
  ```

- [#8960](https://github.com/biomejs/biome/pull/8960) [`4a5ff40`](https://github.com/biomejs/biome/commit/4a5ff4034d8406d7de28aa6ce8095987c3fef547) Thanks [@abossenbroek](https://github.com/abossenbroek)! - Added the nursery rule [`noPlaywrightElementHandle`](https://biomejs.dev/linter/rules/no-playwright-element-handle/). Prefers locators to element handles.

  ```js
  const el = await page.$(".btn");
  ```

- [#8960](https://github.com/biomejs/biome/pull/8960) [`4a5ff40`](https://github.com/biomejs/biome/commit/4a5ff4034d8406d7de28aa6ce8095987c3fef547) Thanks [@abossenbroek](https://github.com/abossenbroek)! - Added the nursery rule [`noPlaywrightEval`](https://biomejs.dev/linter/rules/no-playwright-eval/). Disallows `page.$eval()` and `page.$$eval()` methods.

  ```js
  await page.$eval(".btn", (el) => el.textContent);
  ```

- [#8960](https://github.com/biomejs/biome/pull/8960) [`4a5ff40`](https://github.com/biomejs/biome/commit/4a5ff4034d8406d7de28aa6ce8095987c3fef547) Thanks [@abossenbroek](https://github.com/abossenbroek)! - Added the nursery rule [`noPlaywrightForceOption`](https://biomejs.dev/linter/rules/no-playwright-force-option/). Disallows the `force` option on user interactions.

  ```js
  await locator.click({ force: true });
  ```

- [#8960](https://github.com/biomejs/biome/pull/8960) [`4a5ff40`](https://github.com/biomejs/biome/commit/4a5ff4034d8406d7de28aa6ce8095987c3fef547) Thanks [@abossenbroek](https://github.com/abossenbroek)! - Added the nursery rule [`noPlaywrightMissingAwait`](https://biomejs.dev/linter/rules/no-playwright-missing-await/). Enforces awaiting async Playwright APIs.

  ```js
  const el = page.locator(".btn");
  el.click(); // Missing await
  ```

- [#8960](https://github.com/biomejs/biome/pull/8960) [`4a5ff40`](https://github.com/biomejs/biome/commit/4a5ff4034d8406d7de28aa6ce8095987c3fef547) Thanks [@abossenbroek](https://github.com/abossenbroek)! - Added the nursery rule [`noPlaywrightNetworkidle`](https://biomejs.dev/linter/rules/no-playwright-networkidle/). Disallows deprecated `networkidle` wait option.

  ```js
  await page.goto(url, { waitUntil: "networkidle" });
  ```

- [#8960](https://github.com/biomejs/biome/pull/8960) [`4a5ff40`](https://github.com/biomejs/biome/commit/4a5ff4034d8406d7de28aa6ce8095987c3fef547) Thanks [@abossenbroek](https://github.com/abossenbroek)! - Added the nursery rule [`noPlaywrightPagePause`](https://biomejs.dev/linter/rules/no-playwright-page-pause/). Disallows `page.pause()` debugging calls in committed code.

  ```js
  a

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.2]_

### 2.4.1 — Biome CLI v2.4.1

- Date: 2026-02-16
- Version: 2.4.1
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.1
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.1

##### 2.4.1

###### Patch Changes

- [#9092](https://github.com/biomejs/biome/pull/9092) [`6edd600`](https://github.com/biomejs/biome/commit/6edd6006b3f58e2e60f16eecd232cb6029794d5e) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9052](https://github.com/biomejs/biome/issues/9052). This PR reverts changes introduced by https://github.com/biomejs/biome/pull/8519, which caused unwanted changes on how paths are resolved.

- [#9091](https://github.com/biomejs/biome/pull/9091) [`3bf674d`](https://github.com/biomejs/biome/commit/3bf674d2b30dc039b2488f2e57a779aea29024ae) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9090](https://github.com/biomejs/biome/issues/9090), where SCSS files were incorrectly processed by Biome. This was a regressions caused by the latest developments for supporting SCSS out of the box.

- [#9100](https://github.com/biomejs/biome/pull/9100) [`66931a8`](https://github.com/biomejs/biome/commit/66931a8d024fb33b004b1aad3ae8fe63ddac4781) Thanks [@siketyan](https://github.com/siketyan)! - Fixed [#9081](https://github.com/biomejs/biome/issues/9081): The `noUnknownPseudoElement` rule no longer reports false positives for any known pseudo elements in CSS modules. This was a regression introduced in v2.4.0.

- [#9102](https://github.com/biomejs/biome/pull/9102) [`d01b903`](https://github.com/biomejs/biome/commit/d01b90322ee587c65fbb7920ecd5d21ae13eeb52) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#9095](https://github.com/biomejs/biome/issues/9095), where Biome didn't print anything in stdin mode. This was a regression caused by a recent, internal refactor.



##### What's Changed
* chore: docs that break website by @ematipico in https://github.com/biomejs/biome/pull/9077
* chore(deps): update dependency @types/node to v24.10.13 by @renovate[bot] in https://github.com/biomejs/biome/pull/9083
* chore(deps): update dependency rust to v1.93.1 by @renovate[bot] in https://github.com/biomejs/biome/pull/9084
* chore(deps): update github-actions by @renovate[bot] in https://github.com/biomejs/biome/pull/9086
* chore(deps): update dependency tombi to v0.7.28 by @renovate[bot] in https://github.com/biomejs/biome/pull/9085
* feat(markdown): port snapshots from prettier by @tidefield in https://github.com/biomejs/biome/pull/9067
* fix(core): scss handling by @ematipico in https://github.com/biomejs/biome/pull/9091
* revert(core): includes resolution by @ematipico in https://github.com/biomejs/biome/pull/9092
* chore(deps): update rust crate jiff to 0.2.20 by @renovate[bot] in https://github.com/biomejs/biome/pull/9088
* chore(deps): update rust crate libc to 0.2.182 by @renovate[bot] in https://github.com/biomejs/biome/pull/9089
* fix(cli): stdin regression by @ematipico in https://github.com/biomejs/biome/pull/9102
* fix(lint): regression of the `noUnknownPseudoElement` rule by @siketyan in https://github.com/biomejs/biome/pull/9100
* ci: release by @github-actions[bot] in https://github.com/biomejs/biome/pull/9094


**Full Changelog**: https://github.com/biomejs/biome/compare/@biomejs/biome@2.4.0...@biomejs/biome@2.4.1

### 2.4.0 — Biome CLI v2.4.0

- Date: 2026-02-15
- Version: 2.4.0
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.4.0
- Permalink: https://whatsnew.fyi/product/biome/releases/2.4.0

##### 2.4.0

###### Minor Changes

- [#8964](https://github.com/biomejs/biome/pull/8964) [`0353fa0`](https://github.com/biomejs/biome/commit/0353fa0132ee683073b3f00ca51d53a914d11038) Thanks [@dyc3](https://github.com/dyc3)! - Added `ignore` option to the [`useHookAtTopLevel`](https://biomejs.dev/linter/rules/use-hook-at-top-level/) rule.

  You can now specify function names that should not be treated as hooks, even if they follow the `use*` naming convention.

  Example configuration:

  ```json
  {
    "linter": {
      "rules": {
        "correctness": {
          "useHookAtTopLevel": {
            "options": {
              "ignore": ["useDebounce", "useCustomUtility"]
            }
          }
        }
      }
    }
  }
  ```

- [#8769](https://github.com/biomejs/biome/pull/8769) [`d0358b0`](https://github.com/biomejs/biome/commit/d0358b0c96dfd014973e5336fc7ebfb8c68affb2) Thanks [@rahuld109](https://github.com/rahuld109)! - Added the rule [`useAnchorContent`](https://biomejs.dev/linter/rules/use-anchor-content/) for HTML to enforce that anchor elements have accessible content for screen readers. The rule flags empty anchors, anchors with only whitespace, and anchors where all content is hidden with `aria-hidden`. Anchors with `aria-label` or `title` attributes providing a non-empty accessible name are considered valid.

- [#8742](https://github.com/biomejs/biome/pull/8742) [`6340ce6`](https://github.com/biomejs/biome/commit/6340ce62c850b727b11c62a4886b94bc25dac05c) Thanks [@rahuld109](https://github.com/rahuld109)! - Added the rule [`useMediaCaption`](https://biomejs.dev/linter/rules/use-media-caption/) to the HTML language. Enforces that `audio` and `video` elements have a `track` element with `kind="captions"` for accessibility. Muted videos are allowed without captions.

- [#8621](https://github.com/biomejs/biome/pull/8621) [`d11130b`](https://github.com/biomejs/biome/commit/d11130b202b5db7219d28ade03bc55e02812de20) Thanks [@Netail](https://github.com/Netail)! - Added support for multiple reporters, and the ability to save reporters on arbitrary files.

  #### Combine two reporters in CI

  If you run Biome on GitHub, take advantage of the reporter and still see the errors in console, you can now use both reporters:

  ```shell
  biome ci --reporter=default --reporter=github
  ```

  #### Save reporter output to a file

  With the new `--reporter-file` CLI option, it's now possible to save the output of all reporters to a file. The file is a path,
  so you can pass a relative or an absolute path:

  ```shell
  biome ci --reporter=rdjson --reporter-file=/etc/tmp/report.json
  biome ci --reporter=summary --reporter-file=./reports/file.txt
  ```

  You can combine these two features. For example, have the `default` reporter written on terminal, and the `rdjson` reporter written on file:

  ```shell
  biome ci --reporter=default --reporter=rdjson --reporter-file=/etc/tmp/report.json
  ```

  **The `--reporter` and `--reporter-file` flags must appear next to each other, otherwise an error is thrown.**

- [#8399](https://github.com/biomejs/biome/pull/8399) [`ab88099`](https://github.com/biomejs/biome/commit/ab8809959c3dfeeb21d02528edaa3f8637de749a) Thanks [@ematipico](https://github.com/ematipico)! - The Biome CSS parser is now able to parse Vue SFC syntax such as `:slotted` and `:deep`. These pseudo functions are only correctly parsed when the CSS is defined inside `.vue` components. Otherwise, Biome will a emit a parse error.

  This capability is only available when `experimentalFullHtmlSupportedEnabled` is set to `true`.

- [#8663](https://github.com/biomejs/biome/pull/8663) [`3dfea16`](https://github.com/biomejs/biome/commit/3dfea169c7632b59fa6fdca3593802dd8fc9948a) Thanks [@ematipico](https://github.com/ematipico)! - Added support for Cursor files. When Biome sees a Cursor JSON file, it will parse it with comments enabled and trailing commas enabled:
  - `$PROJECT/.cursor/`
  - `%APPDATA%\Cursor\User\` on Windows
  -

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### 2.3.15 — Biome CLI v2.3.15

- Date: 2026-02-12
- Version: 2.3.15
- Original notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.3.15
- Permalink: https://whatsnew.fyi/product/biome/releases/2.3.15

##### 2.3.15

###### Patch Changes

- [#9019](https://github.com/biomejs/biome/pull/9019) [`043b67c`](https://github.com/biomejs/biome/commit/043b67c608f99a27c775deefb9f00b43839251ae) Thanks [@dyc3](https://github.com/dyc3)! - Added the lint rule [`noNestedPromises`](https://biomejs.dev/linter/rules/no-nested-promises/). This rule detects nested `.then()` or `.catch()` calls that could be refactored into flat promise chains.

  ```js
  // Invalid: nested promise that can be flattened
  doThing().then(function () {
    return doOtherThing().then(console.log);
  });

  // Valid: flat promise chain
  doThing()
    .then(() => doOtherThing())
    .then(console.log);
  ```

  The rule intelligently allows nesting when the inner callback references variables from the outer scope, as these cases cannot be safely flattened.

- [#9029](https://github.com/biomejs/biome/pull/9029) [`6ebf6c6`](https://github.com/biomejs/biome/commit/6ebf6c605f20a504aa5f23477f2e9be32437fb90) Thanks [@ff1451](https://github.com/ff1451)! - Added the nursery rule [`noUselessReturn`](https://biomejs.dev/linter/rules/no-useless-return/). The rule reports redundant `return;` statements that don't affect the function's control flow.

  ```js
  // Invalid: return at end of function is redundant
  function foo() {
    doSomething();
    return;
  }
  ```

- [#9017](https://github.com/biomejs/biome/pull/9017) [`8bac2da`](https://github.com/biomejs/biome/commit/8bac2da137bb1b697be1ebf41a11088c0220ce65) Thanks [@mdevils](https://github.com/mdevils)! - Reverted a behavior change in [`useExhaustiveDependencies`](https://biomejs.dev/linter/rules/use-exhaustive-dependencies/) that was accidentally included as part of the [#8802](https://github.com/biomejs/biome/issues/8802) fix. The change made method calls on objects (e.g., `props.data.forEach(...)`) report only the object (`props.data`) as a missing dependency instead of the full member expression. This behavior change will be reconsidered separately.

- [#9005](https://github.com/biomejs/biome/pull/9005) [`c8dbbbe`](https://github.com/biomejs/biome/commit/c8dbbbe9363fb156a29de174ba7735154f6bc783) Thanks [@corvid-agent](https://github.com/corvid-agent)! - Fixed [#8790](https://github.com/biomejs/biome/issues/8790): The [`noAssignInExpressions`](https://biomejs.dev/linter/rules/no-assign-in-expressions/) rule no longer reports a false positive when an assignment is used as the expression body of an arrow function (e.g., `const f = b => a += b`).

- [#8519](https://github.com/biomejs/biome/pull/8519) [`ccdc602`](https://github.com/biomejs/biome/commit/ccdc602d8ab8e7b14b7cbae2b12cdf396edb8301) Thanks [@ruidosujeira](https://github.com/ruidosujeira)! - Fixed [#8518](https://github.com/biomejs/biome/issues/8518), where globally excluded files in a monorepo were still being processed when using `"extends": "//"`.

  When a package-level configuration extends the root configuration with `"extends": "//"`, glob patterns (such as those in `files.includes`) are now correctly resolved relative to the project root directory, instead of the current workspace directory.

- [#9033](https://github.com/biomejs/biome/pull/9033) [`0628e0a`](https://github.com/biomejs/biome/commit/0628e0a238d9c9c750e4f44c460455183a0ff70e) Thanks [@mdevils](https://github.com/mdevils)! - Fixed [#8967](https://github.com/biomejs/biome/issues/8967). [useExhaustiveDependencies](https://biomejs.dev/linter/rules/use-exhaustive-dependencies/) no longer reports false positives for variables destructured from a rest pattern.

- [#9023](https://github.com/biomejs/biome/pull/9023) [`8ef9d1d`](https://github.com/biomejs/biome/commit/8ef9d1d81c416a9f4d42527f4c263bc3f2e423b1) Thanks [@siketyan](https://github.com/siketyan)! - Fixed [#9020](https://github.com/biomejs/biome/issues/9020): When `javascript.jsxRuntime` is set to `reactClassic`, `noUnusedImports` and `useImportType` rules now allow importing the `React` identifier from a package other than `react`. This align

_[Truncated at 4000 characters — full notes: https://github.com/biomejs/biome/releases/tag/%40biomejs/biome%402.3.15]_