Impact Score: 5/10
Biome CLI v2.1.3
Source available — automated, not human-reviewed
Component: @biomejs/biome · Channel: stable. Automated analysis, not a compatibility certification. How this works.
Analysis updated: 2026-11-01.
⚡ Executive Summary (TL;DR)
Biome @biomejs/[email protected]. Source highlight: Added the rule `noVueReservedKeys`, which prevents the use of reserved Vue keys.
Who Does This Impact? (Role-Based Analysis)
💻 Software Engineers & Devs
Check the source notes against the package and APIs you use before upgrading.
📊 Product & Engineering Leads
Use the documented changes to assess relevance to your product; release frequency alone is not a quality measure.
⚙️ DevOps & Security
Verify the target version, runtime requirements and rollback procedure in the official documentation.
✨ New Features & Capabilities (6)
- Added `@eslint-react/no-nested-component-definitions` as a rule source for `noNestedComponentDefinitions`. Now it will get picked up by `biome migrate --eslint`.
- Added a new JSON rule called `noQuickfixBiome`, which disallow the use of code action `quickfix.biome` inside code editor settings.
- Added the nursery rule `useReactFunctionComponents`. This rule enforces the preference to use function components instead of class components.
- perf: introduce `Path` type
- ci: add French, Spanish and Ukrainian to labeler
- refactor: add `no-nested-component-definitions` rule to eslint migration
⚡ Performance & Enhancements (1)
- perf: shrink `Text`
🔧 Bug Fixes & Patches (6)
- Added the rule `noVueReservedKeys`, which prevents the use of reserved Vue keys.
- Fixed a website link for the `useComponentExportOnlyModules` linter rule to point to the correct URL.
- Fixed #6910: Biome now ignores type casts and assertions when evaluating numbers for `noMagicNumbers` rule.
- Fixed #6973: Add support for parsing the :active-view-transition-type() pseudo-class
- Fixed `@vitest/eslint-plugin` source url.
- Fixed ESLint migration for the rule `prefer-for` from `eslint-plugin-solid` to Biome's `useForComponent`.
📄 View Raw Release Notes (Original Developer Log)
## 2.1.3
### Patch Changes
- [#7057](https://github.com/biomejs/biome/pull/7057) [`634a667`](https://github.com/biomejs/biome/commit/634a667ac8e9f74a4633895eab4bd4695ffffa1d) Thanks [@mdevils](https://github.com/mdevils)! - Added the rule [`noVueReservedKeys`](https://biomejs.dev/linter/rules/no-vue-reserved-keys/), which prevents the use of reserved Vue keys.
It prevents the use of Vue reserved keys such as those starting with `# @biomejs/biome (like `$el`, `$data`, `$props`) and keys starting with `\_` in data properties, which can cause conflicts and unexpected behavior in Vue components.
##### Invalid example
```vue
<script>
export default {
data: {
$el: "",
_foo: "bar",
},
};
</script>
```
```vue
<script>
export default {
computed: {
$data() {
return this.someData;
},
},
};
</script>
```
##### Valid examples
```vue
<script>
export default {
data() {
return {
message: "Hello Vue!",
count: 0,
};
},
};
</script>
```
```vue
<script>
export default {
computed: {
displayMessage() {
return this.message;
},
},
};
</script>
```
- [#6941](https://github.com/biomejs/biome/pull/6941) [`734d708`](https://github.com/biomejs/biome/commit/734d708bd84f32d72e5972cc27c194d5da46a3c0) Thanks [@JamBalaya56562](https://github.com/JamBalaya56562)! - Added `@eslint-react/no-nested-component-definitions` as a rule source for `noNestedComponentDefinitions`. Now it will get picked up by `biome migrate --eslint`.
- [#6463](https://github.com/biomejs/biome/pull/6463) [`0a16d54`](https://github.com/biomejs/biome/commit/0a16d54c2cffbf13c5144b53021923734f1c234e) Thanks [@JamBalaya56562](https://github.com/JamBalaya56562)! - Fixed a website link for the `useComponentExportOnlyModules` linter rule to point to the correct URL.
- [#6944](https://github.com/biomejs/biome/pull/6944) [`e53f2fe`](https://github.com/biomejs/biome/commit/e53f2fe03827a8dcad2184178ecfaee0e35af992) Thanks [@sterliakov](https://github.com/sterliakov)! - Fixed [#6910](https://github.com/biomejs/biome/issues/6910): Biome now ignores type casts and assertions when evaluating numbers for `noMagicNumbers` rule.
- [#6991](https://github.com/biomejs/biome/pull/6991) [`476cd55`](https://github.com/biomejs/biome/commit/476cd55e4e5b1b03335e14c65ad01b2bbb4b8d42) Thanks [@denbezrukov](https://github.com/denbezrukov)! - Fixed [#6973](https://github.com/biomejs/biome/issues/6973): Add support for parsing the :active-view-transition-type() pseudo-class
```css
:active-view-transition-type(first second) {
}
```
- [#6992](https://github.com/biomejs/biome/pull/6992) [`0b1e194`](https://github.com/biomejs/biome/commit/0b1e19474e323c7354fccff0c5654d47024c7b91) Thanks [@ematipico](https://github.com/ematipico)! - Added a new JSON rule called `noQuickfixBiome`, which disallow the use of code action `quickfix.biome` inside code editor settings.
- [#6943](https://github.com/biomejs/biome/pull/6943) [`249306d`](https://github.com/biomejs/biome/commit/249306db32b6a912f39d2c88a1b0d702b8b97a9b) Thanks [@JamBalaya56562](https://github.com/JamBalaya56562)! - Fixed `@vitest/eslint-plugin` source url.
- [#6947](https://github.com/biomejs/biome/pull/6947) [`4c7ed0f`](https://github.com/biomejs/biome/commit/4c7ed0fda858424a21fb1766270aaa74838a46a1) Thanks [@JamBalaya56562](https://github.com/JamBalaya56562)! - Fixed ESLint migration for the rule `prefer-for` from `eslint-plugin-solid` to Biome's `useForComponent`.
- [#6976](https://github.com/biomejs/biome/pull/6976) [`72ebadc`](https://github.com/biomejs/biome/commit/72ebadce0e192932d237d9a31c45cb230c8bbd91) Thanks [@siketyan](https://github.com/siketyan)! - Fixed [#6692](https://github.com/biomejs/biome/issues/6692): The rules `noUnusedVariables` and `noUnusedFunctionParameters` no longer cause an infinite loop when the suggested name is not applicable (e.g. the suggested name is already declared in the scope).
- [#6990](https://github.com/biomejs/biome/pull/6990) [`333f5d0`](https://github.com/biomejs/biome/commit/333f5d0a11dc1b2c029c657905bc73d3daf72477) Thanks [@rvanlaarhoven](https://github.com/rvanlaarhoven)! - Fixed the documentation URL for `lint/correctness/noUnknownPseudoClass`
- [#7000](https://github.com/biomejs/biome/pull/7000) [`4021165`](https://github.com/biomejs/biome/commit/402116575ef570da02ccbce521645a3975b3e8ce) Thanks [@harxki](https://github.com/harxki)! - Fixed [#6795](https://github.com/biomejs/biome/issues/6795): `noUnassignedVariables` now correctly recognizes variables used in JSX `ref` attributes.
- [#7044](https://github.com/biomejs/biome/pull/7044) [`b091ddf`](https://github.com/biomejs/biome/commit/b091ddf73d323a6929b9601f05ede7e91e4d4cbb) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#6622](https://github.com/biomejs/biome/issues/6622), now the rule `useSemanticElements` works for JSX self-closing elements too.
- [#7014](https://github.com/biomejs/biome/pull/7014) [`c4864e8`](https://github.com/biomejs/biome/commit/c4864e85ebbb1bbfbb8274c59bb6af9413d8f157) Thanks [@siketyan](https://github.com/siketyan)! - Fixed [#6516](https://github.com/biomejs/biome/issues/6516): The `biome migrate` command no longer break the member list with trailing comments.
- [#6979](https://github.com/biomejs/biome/pull/6979) [`29cb6da`](https://github.com/biomejs/biome/commit/29cb6da9a1e8f20af59f5e681b9d2aa1a23e8b27) Thanks [@unvalley](https://github.com/unvalley)! - Fixed [#6767](https://github.com/biomejs/biome/issues/6767): `useSortedClasses` now correctly removes leading and trailing whitespace in className.
Previously, trailing spaces in className were not fully removed.
```jsx
// Think we have this code:
<div className="text-sm font-bold " />
// Before: applied fix, but a trailing space was preserved
<div className="font-bold text-sm " />
// After: applied fix, trailing spaces removed
<div className="font-bold text-sm" />
```
- [#7055](https://github.com/biomejs/biome/pull/7055) [`ee4828d`](https://github.com/biomejs/biome/commit/ee4828da9be5898c67b7feabfaaa296ad172109f) Thanks [@dyc3](https://github.com/dyc3)! - Added the nursery rule [`useReactFunctionComponents`](https://biomejs.dev/linter/rules/use-react-function-components/). This rule enforces the preference to use function components instead of class components.
Valid:
```jsx
function Foo() {
return <div>Hello, world!</div>;
}
```
Invalid:
```jsx
class Foo extends React.Component {
render() {
return <div>Hello, world!</div>;
}
}
```
- [#6924](https://github.com/biomejs/biome/pull/6924) [`2d21be9`](https://github.com/biomejs/biome/commit/2d21be9437fd77a1c534a1ea156d9a9421c17d30) Thanks [@ematipico](https://github.com/ematipico)! - Fixed [#113](https://github.com/biomejs/biome-zed/issues/113), where the Biome Language Server didn't correctly update the diagnostics when the configuration file is modified in the editor. Now the diagnostics are correctly updated every time the configuration file is modified and saved.
- [#6931](https://github.com/biomejs/biome/pull/6931) [`e6b2380`](https://github.com/biomejs/biome/commit/e6b238063f92bc95d951e3a78dac42408d0814c0) Thanks [@arendjr](https://github.com/arendjr)! - Fixed [#6915](https://github.com/biomejs/biome/issues/6915): `useHookAtTopLevel` no longer hangs when rules call themselves recursively.
- [#7012](https://github.com/biomejs/biome/pull/7012) [`01c0ab4`](https://github.com/biomejs/biome/commit/01c0ab43ad7785e093e5069dda1d5e6969958bf8) Thanks [@siketyan](https://github.com/siketyan)! - Fixed [#5837](https://github.com/biomejs/biome/issues/5837): Invalid suppression comments such as `biome-ignore-all-start` or `biome-ignore-all-end` no longer causes a panic.
- [#6949](https://github.com/biomejs/biome/pull/6949) [`48462f8`](https://github.com/biomejs/biome/commit/48462f81ba4e98a95236365a5f9759fc41c045d7) Thanks [@fireairforce](https://github.com/fireairforce)! - Support parse `import defer`(which is a [stage3 proposal](https://github.com/tc39/proposal-defer-import-eval)). The syntax look like this:
```ts
import defer * as foo from "<specifier>";
```
- [#6938](https://github.com/biomejs/biome/pull/6938) [`5feb5a6`](https://github.com/biomejs/biome/commit/5feb5a675adb246b04b1540cba16ff1c5fd49cb1) Thanks [@vladimir-ivanov](https://github.com/vladimir-ivanov)! - Fixed [#6919](https://github.com/biomejs/biome/issues/6919) and [#6920](https://github.com/biomejs/biome/issues/6920):
`useReadonlyClassProperties` now does checks for mutations in async class methods.
Example:
```typescript
class Counter3 {
private counter: number;
async count() {
this.counter = 1;
const counterString = `${this.counter++}`;
}
}
```
- [#6942](https://github.com/biomejs/biome/pull/6942) [`cfda528`](https://github.com/biomejs/biome/commit/cfda528169dcceb8422a0488b39a3b1b27a24645) Thanks [@sterliakov](https://github.com/sterliakov)! - Fixed [#6939](https://github.com/biomejs/biome/issues/6939). Biome now understands `this` binding in classes outside of methods.
## What's Changed
* docs: explain how to document options by @ematipico in https://github.com/biomejs/biome/pull/6916
* chore: fix changelog by @dyc3 in https://github.com/biomejs/biome/pull/6917
* fix: update `useComponentExportOnlyModules` website link by @JamBalaya56562 in https://github.com/biomejs/biome/pull/6463
* fix(lsp): update diagnostics on watched files by @ematipico in https://github.com/biomejs/biome/pull/6924
* fix(linter): fix recursive hooks by @arendjr in https://github.com/biomejs/biome/pull/6931
* perf: introduce `Path` type by @arendjr in https://github.com/biomejs/biome/pull/6935
* ci: add French, Spanish and Ukrainian to labeler by @JamBalaya56562 in https://github.com/biomejs/biome/pull/6926
* refactor: add `no-nested-component-definitions` rule to eslint migration by @JamBalaya56562 in https://github.com/biomejs/biome/pull/6941
* fix: typo `perfer-for` → `prefer-for` by @JamBalaya56562 in https://github.com/biomejs/biome/pull/6947
* fix(core): fix type inference of `this` by @sterliakov in https://github.com/biomejs/biome/pull/6942
* fix(biome_js_analyze): ignore `as const` and similar wrappers in `noMagicNumbers` rule by @sterliakov in https://github.com/biomejs/biome/pull/6944
* fix: typo `@vitest/eslint-plugin` source url by @JamBalaya56562 in https://github.com/biomejs/biome/pull/6943
* chore(deps): update github-actions by @renovate[bot] in https://github.com/biomejs/biome/pull/6954
* perf: shrink `Text` by @arendjr in https://github.com/biomejs/biome/pull/6946
* fix(deps): update rust crate roaring to 0.11.1 by @renovate[bot] in https://github.com/biomejs/biome/pull/6959
* chore(deps): update typescript-eslint monorepo to v8.37.0 by @renovate[bot] in https://github.com/biomejs/biome/pull/6960
* chore(deps): update rust crate serde_json to 1.0.141 by @renovate[bot] in https://github.com/biomejs/biome/pull/6957
* chore(deps): update dependency @types/node to v22.16.5 by @renovate[bot] in https://github.com/biomejs/biome/pull/6956
* feat(biome-js-analyze): expanded support for useReadonlyClassProperties to cover async class methods too by @vladimir-ivanov in https://github.com/biomejs/biome/pull/6938
* chore(deps): update dependency @types/node to v22.16.5 by @renovate[bot] in https://github.com/biomejs/biome/pull/6955
* feat(parser): support import defer by @fireairforce in https://github.com/biomejs/biome/pull/6949
* chore: split `Type` from `TypeData` by @arendjr in https://github.com/biomejs/biome/pull/6963
* feat(yaml_parser): parse flow constructs by @vohoanglong0107 in https://github.com/biomejs/biome/pull/6961
* fix: remove infinite loop on `function A(A) {}` by @siketyan in https://github.com/biomejs/biome/pull/6976
* feat(parse): add tailwind grammar by @dyc3 in https://github.com/biomejs/biome/pull/6978
* fix(deps): update @biomejs packages (major) by @renovate[bot] in https://github.com/biomejs/biome/pull/6962
* feat(parse): add tailwind parser by @dyc3 in https://github.com/biomejs/biome/pull/6980
* fix: update documentation URL for `noUnknownPseudoClass` by @rvanlaarhoven in https://github.com/biomejs/biome/pull/6990
* fix(lint/useSortedClasses): remove leading and trailing whitespaces by @unvalley in https://github.com/biomejs/biome/pull/6979
* feat(json/analyze): rule `noQuickfixBiome` by @ematipico in https://github.com/biomejs/biome/pull/6992
* chore: update generated code from analyzer codegen by @harxki in https://github.com/biomejs/biome/pull/7001
* refactor(formatter): specialised verbatim formatting by @ematipico in https://github.com/biomejs/biome/pull/7002
* fix(css_parser): add active-view-transition-type() (#6973) by @denbezrukov in https://github.com/biomejs/biome/pull/6991
* fix(suppression): invalid suppression comments should not cause a panic by @siketyan in https://github.com/biomejs/biome/pull/7012
* fix(migrate): transfer comments to the separator by @siketyan in https://github.com/biomejs/biome/pull/7014
* test(biome-js-analyze): add tests to cover tests to cover ??=, ||=, &&= by @vladimir-ivanov in https://github.com/biomejs/biome/pull/7010
* fix(lint/noUnassignedVariables): handle JSX ref attribute assignments by @harxki in https://github.com/biomejs/biome/pull/7000
* ci: use depot cargo in the PR workflow by @ematipico in https://github.com/biomejs/biome/pull/7045
* Revert "ci: use depot cargo in the PR workflow" by @ematipico in https://github.com/biomejs/biome/pull/7046
* fix(lint): `useSemanticElements` self-closing elements by @ematipico in https://github.com/biomejs/biome/pull/7044
* chore(deps): update rust:1.88.0-bullseye docker digest to b315f98 by @renovate[bot] in https://github.com/biomejs/biome/pull/7043
* ci: make it so windows devs don't get lints that don't show up on linux/macos by @dyc3 in https://github.com/biomejs/biome/pull/7003
* docs: update analyzer CONTRIBUTING.md by @dyc3 in https://github.com/biomejs/biome/pull/7056
* refactor(format): use specialised tokens by @ematipico in https://github.com/biomejs/biome/pull/7052
* feat(lint): implement `noVueReservedKeys` rule by @mdevils in https://github.com/biomejs/biome/pull/7057
* feat(analyze/js): add useReactFunctionComponents rule by @dyc3 in https://github.com/biomejs/biome/pull/7055
* ci: release by @github-actions[bot] in https://github.com/biomejs/biome/pull/6927
## New Contributors
* @rvanlaarhoven made their first contribution in https://github.com/biomejs/biome/pull/6990
* @harxki made their first contribution in https://github.com/biomejs/biome/pull/7001
**Full Changelog**: https://github.com/biomejs/biome/compare/@biomejs/[email protected]...@biomejs/[email protected]