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This PR contains the following updates:
^2.4.10→^2.4.13^2.30.0→^2.31.0^0.96.0→^0.96.12.0.4→2.0.5^8.58.0→^8.59.0^8.58.0→^8.59.0^4.1.3→^4.1.5^1.6.14→^1.6.16^3.21.0→^3.21.2^10.2.0→^10.2.1^4.0.2→^4.0.3^17.4.0→^17.5.0^4.0.8→^4.0.9^16.2.2→^16.2.424.14.1→24.15.010.33.0→10.33.2v5→v6v3→v6^19.2.4→^19.2.5^19.2.4→^19.2.5^6.0.2→^6.0.3^8.58.0→^8.59.0^8.0.6→^8.0.10^8.0.6→^8.0.10^4.1.3→^4.1.5cc @skulidropek
Release Notes
biomejs/biome (@biomejs/biome)
v2.4.13Compare Source
Patch Changes
#9969
c5eb92bThanks @officialasishkumar! - Added the nursery rulenoUnnecessaryTemplateExpression, 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:
#10037
f785e8cThanks @minseong0324! - Fixed #9810:noMisleadingReturnTypeno longer reports false positives on a getter with a matching setter in the same namespace.#10084
5e2f90cThanks @jiwon79! - Fixed #10034:noUselessEscapeInRegexno longer flags escapes ofClassSetReservedPunctuatorcharacters (&,!,#,%,,,:,;,<,=,>,@,`,~) insidev-flag character classes as useless. These characters are reserved as individual code points inv-mode, so the escape is required.The following pattern is now considered valid:
#10063
c9ffa16Thanks @Netail! - Added extra rule sources from ESLint CSS.biome migrate eslintshould do a bit better detecting rules in your eslint configurations.#10035
946b50eThanks @Netail! - Fixed #10032: useIframeSandbox now flags if there's no initializer value.#9865
68fb8d4Thanks @dyc3! - Added the new nursery ruleuseDomNodeTextContent, which preferstextContentoverinnerTextfor DOM node text access and destructuring.For example, the following snippet triggers the rule:
#10023
bd1e74fThanks @ematipico! - Added a new nursery rulenoReactNativeDeepImportsthat disallows deep imports from thereact-nativepackage. Internal paths likereact-native/Libraries/...are not part of the public API and may change between versions.For example, the following code triggers the rule:
#9885
3dce737Thanks @dyc3! - Added a new nursery ruleuseDomQuerySelectorthat prefersquerySelector()andquerySelectorAll()over older DOM query methods such asgetElementById()andgetElementsByClassName().#9995
4da9cafThanks @siketyan! - Fixed #9994: Biome now parses nested CSS rules correctly when declarations follow them inside embedded snippets.#10009
b41cc5aThanks @Jayllyz! - Fixed #10004:noComponentHookFactoriesno longer reports false positives for object methods and class methods.#9988
eabf54aThanks @Netail! - Tweaked the diagnostics range for useAltText, useButtonType, useHtmlLang, useIframeTitle, useValidAriaRole & useIfameSandbox to report on the opening tag instead of the full tag.#10043
fc65902Thanks @mujpao! - Fixed #10003: Biome no longer panics when parsing Svelte files containing{#}.#9815
5cc83b1Thanks @dyc3! - Added the new nursery rulenoLoopFunc. When enabled, it warns when a function declared inside a loop captures outer variables that can change across iterations.#9702
ef470baThanks @ryan-m-walker! - Added the nursery ruleuseRegexpTestthat enforcesRegExp.prototype.test()overString.prototype.match()andRegExp.prototype.exec()in boolean contexts.test()returns a boolean directly, avoiding unnecessary computation of match results.Invalid
Valid
#9743
245307dThanks @leetdavid! - Fixed #2245: Svelte<script>tag language detection when thegenericsattribute contains>characters (e.g.,<script lang="ts" generics="T extends Record<string, unknown>">). Biome now correctly recognizes TypeScript in such script blocks.#10046
0707de7Thanks @Conaclos! - Fixed #10038:organizeImportsnow sorts imports in TypeScript modules and declaration files.declare module "mymodule" { - import type { B } from "b"; import type { A } from "a"; + import type { B } from "b"; }#10012
94ccca9Thanks @ematipico! - Added the nursery rulenoReactNativeLiteralColors, which disallows color literals inside React Native styles.The rule belongs to the
reactNativedomain. It reports properties whose name containscolorand whose value is a string literal when they appear inside aStyleSheet.create(...)call or inside a JSX attribute whose name containsstyle.#10005
131019eThanks @ematipico! - Added the nursery rulenoReactNativeRawText, which disallows raw text outside of<Text>components in React Native.The rule belongs to the new
reactNativedomain.Additional components can be allowlisted through the
skipoption:{ "options": { "skip": ["Title"] } }#9911
1603f78Thanks @Netail! - Added the nursery rulenoJsxLeakedDollar, which flags text nodes with a trailing$if the next sibling node is a JSX expression. This could be an unintentional mistake, resulting in a '$' being rendered as text in the output.Invalid:
#9999
f42405fThanks @minseong0324! - FixednoMisleadingReturnTypeincorrectly flagging functions with reassignedletvariables.#10075
295f97fThanks @ematipico! - Fixed#9983: Biome now parses functions declared inside Svelte#snippetblocks without throwing errors.#10006
cf4c1c9Thanks @minseong0324! - Fixed #9810:noMisleadingReturnTypeincorrectly flagging nested object literals with widened properties.#10033
11ddc05Thanks @ematipico! - Added the nursery ruleuseReactNativePlatformComponentsthat ensures platform-specific React Native components (e.g.ProgressBarAndroid,ActivityIndicatorIOS) are only imported in files with a matching platform suffix. It also reports when Android and iOS components are mixed in the same file.The following code triggers the rule when the file does not have an
.android.jssuffix:v2.4.12Compare Source
Patch Changes
#9376
9701a33Thanks @dyc3! - Added thenursery/noIdenticalTestTitlelint rule. This rule disallows using the same title for twodescribeblocks or two test cases at the same nesting level.#9889
7ae83f2Thanks @dyc3! - Improved the diagnostics foruseForOfto better explain the problem, why it matters, and how to fix it.#9916
27dd7b1Thanks @Jayllyz! - Added a new nursery rulenoComponentHookFactories, that disallows defining React components or custom hooks inside other functions.For example, the following snippets trigger the rule:
#9980
098f1ffThanks @ematipico! - Fixed #9941: Biome now emits awarningdiagnostic when a file exceed thefiles.maxSizelimit.#9942
9956f1dThanks @dyc3! - Fixed #9918:useConsistentTestItno longer panics when applying fixes to chained calls such astest.for([])("x", () => {});.#9891
4d9ac51Thanks @dyc3! - Improved thenoGlobalObjectCallsdiagnostic to better explain why calling global objects likeMathorJSONis invalid and how to fix it.#9902
3f4d103Thanks @ematipico! - Fixed #9901: the commandlint --writeis now idempotent when it's run against HTML-ish files that contains scripts and styles.#9891
4d9ac51Thanks @dyc3! - Improved thenoMultiStrdiagnostic to explain why escaped multiline strings are discouraged and what to use instead.#9966
322675eThanks @siketyan! - Fixed #9113: Biome now parses and formats@mediaand other conditional blocks correctly inside embedded CSS snippets.#9835
f8d49d9Thanks @bmish! - ThenoFloatingPromisesrule now detects floating promises through cross-module generic wrapper functions. Previously, patterns likeexport const fn = trace(asyncFn)— wheretracepreserves the function signature via a generic<F>(fn: F): F— were invisible to the rule when the wrapper was defined in a different file.#9981
02bd8ddThanks @siketyan! - Fixed #9975: Biome now parses nested CSS selectors correctly inside embedded snippets without requiring an explicit&.#9949
e0ba71dThanks @Netail! - Added the nursery ruleuseIframeSandbox, which enforces thesandboxattribute foriframetags.Invalid:
#9913
d417803Thanks @Netail! - Added the nursery rulenoJsxNamespace, which disallows JSX namespace syntax.Invalid:
#9892
e75d70eThanks @dyc3! - Improved thenoSelfComparediagnostic to better explain why comparing a value to itself is suspicious and what to use for NaN checks.#9861
2cff700Thanks @dyc3! - Added the new nursery ruleuseVarsOnTop, which requiresvardeclarations to appear at the top of their containing scope.For example, the following code now triggers the rule:
#9892
e75d70eThanks @dyc3! - Improved thenoThenPropertydiagnostic to better explain why exposingthencan create thenable behavior and how to avoid it.#9892
e75d70eThanks @dyc3! - Improved thenoShorthandPropertyOverridesdiagnostic to explain why later shorthand declarations can unintentionally overwrite earlier longhand properties.#9978
4847715Thanks @mdevils! - Fixed #9744:useExhaustiveDependenciesno longer reports false positives for variables obtained via object destructuring with computed keys, e.g.const { [KEY]: key1 } = props.#9892
e75d70eThanks @dyc3! - Improved thenoRootTypediagnostic to better explain that the reported root type is disallowed by project configuration and how to proceed.#9927
7974ab7Thanks @dyc3! - Added eslint-plugin-unicorn'sno-nested-ternaryas a rule source fornoNestedTernary#9873
19ff706Thanks @minseong0324! -noMisleadingReturnTypenow checks class methods, object methods, and getters in addition to functions.#9888
362b638Thanks @dyc3! - Updated metadata forbiome migrate eslintto better reflect which ESLint rules are redundant versus unsupported versus unimplemented.#9892
e75d70eThanks @dyc3! - Improved thenoAutofocusdiagnostic to better explain why autofocus harms accessibility outside allowed modal contexts.#9982
d6bdf4aThanks @dyc3! - Improved performance of noMagicNumbers.Biome now maps ESLint
no-magic-numberssources more accurately duringbiome migrate eslint.#9889
7ae83f2Thanks @dyc3! - Improved the diagnostics fornoConstantConditionto better explain the problem, why it matters, and how to fix it.#9866
40bd180Thanks @dyc3! - Added a new nursery rulenoExcessiveSelectorClasses, which limits how many class selectors can appear in a single CSS selector.#9796
f1c1363Thanks @dyc3! - Added a new nursery ruleuseStringStartsEndsWith, which prefersstartsWith()andendsWith()over verbose string prefix and suffix checks.The rule uses type information, so it only reports on strings and skips array lookups such as
items[0] === "a".#9942
9956f1dThanks @dyc3! - Fixed the safe fix fornoSkippedTestsso it no longer panics when rewriting skipped test function names such asxit(),xtest(), andxdescribe().#9874
9e570d1Thanks @minseong0324! - Type-aware lint rules now resolve members throughPick<T, K>andOmit<T, K>utility types.#9909
0d0e611Thanks @Netail! - Added the nursery ruleuseReactAsyncServerFunction, which requires React server actions to be async.Invalid:
#9925
29accb3Thanks @ematipico! - Fixed #9910: added support for parsing member expressions in Svelte directive properties. Biome now correctly parses directives likein:renderer.in|global,use:obj.action, and deeply nested forms likein:a.b.c|global.#9904
e7775a5Thanks @ematipico! - Fixed #9626:noUnresolvedImportsno longer reports false positives for named imports from packages that have a corresponding@types/*package installed. For example,import { useState } from "react"with@types/reactinstalled is now correctly recognised.#9942
9956f1dThanks @dyc3! - Fixed the safe fix fornoFocusedTestsso it no longer panics when rewriting focused test function names such asfit()andfdescribe().#9577
c499f46Thanks @tt-a1i! - Added the nursery ruleuseReduceTypeParameter. It flags type assertions on the initial value passed toArray#reduceandArray#reduceRightand recommends using a type parameter instead.#9895
1c8e1efThanks @Netail! - Added extra rule sources from react-xyz.biome migrate eslintshould do a bit better detecting rules in your eslint configurations.#9891
4d9ac51Thanks @dyc3! - Improved thenoInvalidUseBeforeDeclarationdiagnostic to better explain why using a declaration too early is problematic and how to fix it.#9889
7ae83f2Thanks @dyc3! - Improved the diagnostics fornoRedeclareto better explain the problem, why it matters, and how to fix it.#9875
a951586Thanks @minseong0324! - Type-aware lint rules now resolve members throughPartial<T>,Required<T>, andReadonly<T>utility types, preserving optional, readonly, and nullable member flags.v2.4.11Compare Source
Patch Changes
#9350
4af4a3aThanks @dyc3! - Added the new nursery rule useConsistentTestIt in thetestdomain. The rule enforces consistent use of eitheritortestfor test functions in Jest/Vitest suites, with separate control for top-level tests and tests insidedescribeblocks.Invalid:
#9429
a2f3f7eThanks @ematipico! - Added the new nursery lint ruleuseExplicitReturnType. It reports TypeScript functions and methods that omit an explicit return type.#9828
9e40844Thanks @ematipico! - Fixed #9484: the formatter no longer panics when formatting files that containgraphqltagged template literals combined with parenthesized expressions.#9886
e7c681eThanks @ematipico! - Fixed an issue where, occasionally, some bindings and references were not properly tracked, causing false positives fromnoUnusedVariablesandnoUndeclaredVariablesin Svelte, Vue, and Astro files.#9760
5b16d18Thanks @myx0m0p! - Fixed #4093: thenoDeleterule no longer triggers fordelete process.env.FOO, sincedeleteis the documented way to remove environment variables in Node.js.#9799
2af8efdThanks @minseong0324! - Added the rulenoMisleadingReturnType. The rule detects when a function's return type annotation is wider than what the implementation actually returns.#9880
7f67749Thanks @dyc3! - Improved the diagnostics foruseFindto better explain the problem, why it matters, and how to fix it.#9755
bff7bdbThanks @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, and then runs the rest of the rules.#8651
aafca2dThanks @siketyan! - Add a new lint ruleuseDisposablesfor JavaScript, which detects disposable objects assigned to variables withoutusingorawait usingsyntax. Disposable objects that implement theDisposableorAsyncDisposableinterface are intended to be disposed of after use. Not disposing them can lead to resource or memory leaks, depending on the implementation.Invalid:
Valid:
#9788
53b8e57Thanks @MeGaNeKoS! - Fixed #7760: Added support for CSS scroll-driven animationtimeline-range-namekeyframe selectors (cover,contain,entry,exit,entry-crossing,exit-crossing). Biome no longer reports parse errors on keyframes likeentry 0% { ... }orexit 100% { ... }.#9728
5085424Thanks @mkosei! - Fixed #9696: Astro frontmatter now correctly parses regular expression literals like/\d{4}/.#9261
16b6c49Thanks @ematipico! - Fixed #8409: CSS formatter now correctly places comments after the colon in property declarations.Previously, comments that appeared after the colon in CSS property values were incorrectly moved before the property name:
[lang]:lang(ja) { - /* system-ui,*/ font-family: + font-family: /* system-ui,*/ Hiragino Sans, sans-serif; }#9441
957ea4cThanks @soconnor-seeq! - Fixed #1630: LSP project selection now prefers the most specific project root in nested workspaces.#9878
de6210fThanks @ematipico! - Fixed #9118:noUnusedImportsno longer reports false positives for default imports used inside Svelte, Vue and Astro components.#9879
ce7e2b7Thanks @dyc3! - Fixed a parser diagnostic's message when vue syntax is disabled so that it no longer references the non-existanthtml.parser.vueoption. This option will become available in 2.5.#9880
7f67749Thanks @dyc3! - Improved the diagnostics foruseRegexpExecto better explain the problem, why it matters, and how to fix it.#9846
b7134d9Thanks @ematipico! - Fixed #9140: Biome now parses Astro's attribute shorthand inside.astrofiles. The following snippet no longer reports a parse error:#9790
67df09dThanks @dyc3! - Fixed #9781: Trailing comments after a top-levelbiome-ignore-all formatsuppression are now preserved instead of being dropped. This applies to JavaScript, CSS, HTML, JSONC, GraphQL, and Grit files.#9745
d87073eThanks @ematipico! - Fixed #9741: the LSP server now correctly returns theorganizeImportscode action when the client requests it viasource.organizeImports.biomein theonlyfilter. Previously, editors withcodeAction/resolvesupport (e.g. Zed) received an empty response because the action was serialized with the wrong kind (source.biome.organizeImportsinstead ofsource.organizeImports.biome).#9880
7f67749Thanks @dyc3! - Improved the diagnostics foruseArraySometo better explain the problem, why it matters, and how to fix it.#9795
1d09f0fThanks @dyc3! - RelaxeduseExplicitTypefor trivially inferrable types.Type annotations can now be omitted when types are trivially inferrable from:
const sum = 1 + 1)const isEqual = 'a' === 'b',const isTest = process.env.NODE_ENV === 'test')const and = true && false)const date = new Date())const arr = [1, 2, 3])const val = true ? 'yes' : 'no')const num = Math.random())const fn = (max = MAX_ATTEMPTS) => ...)Comparison expressions always return
boolean, so any operands are now allowed(including property access like
process.env.NODE_ENV).Parameters with default values no longer require type annotations, as TypeScript
can infer the type from the default value (even when referencing variables).
Also removed the redundant
anytype validation from this rule. Theanytypeis now only validated by the dedicated
noExplicitAnyrule, following theSingle Responsibility Principle.
#9809
e8cad58Thanks @Netail! - Added the new nursery ruleuseQwikLoaderLocation, which enforces that Qwik loader functions are declared in the correct location.#9877
fc9d715Thanks @ematipico! - Fixed #9136 and #9653:noUndeclaredVariablesandnoUnusedVariablesno longer report false positives on several Svelte template constructs that declare or reference bindings in the host grammar:{#snippet name(params)}— the snippet name and its parameters (including object, array, rest, and nested destructuring) are now tracked.{@​render name(args)}— the snippet name used at the render site is now resolved against the snippet declaration.{#each items as item, index (key)}— theitembinding (plain identifier or destructured), the optionalindex, and the optionalkeyexpression are now tracked.{@​const name = value}— the declared name is now tracked as a binding and the initializer is analyzed for undeclared references.{@​debug a, b, c}— each debugged identifier is now analyzed and reported if undeclared.<img {src} />— the curly-shorthand attribute is now analyzed as an expression, so undeclared references inside it are reported.For example, the following template no longer triggers either rule:
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