### Environment information ```bash CLI: Version: 2.0.6 Color support: true Platform: CPU Architecture: x86_64 OS: windows Environment: BIOME_LOG_PATH: unset BIOME_LOG_PREFIX_NAME: unset BIOME_CONFIG_PATH: unset BIOME_THREADS: unset NO_COLOR: unset TERM: unset JS_RUNTIME_VERSION: v22.14.0 JS_RUNTIME_NAME: node NODE_PACKAGE_MANAGER: npm/10.9.2 Biome Configuration: Status: Loaded successfully Path: biome.jsonc Formatter enabled: true Linter enabled: true Assist enabled: true VCS enabled: true Linter: JavaScript enabled: unset JSON enabled: unset CSS enabled: unset GraphQL enabled: unset Recommended: unset Enabled rules: a11y/noAccessKey a11y/noAriaHiddenOnFocusable a11y/noAriaUnsupportedElements a11y/noAutofocus a11y/noDistractingElements a11y/noHeaderScope a11y/noInteractiveElementToNoninteractiveRole a11y/noLabelWithoutControl a11y/noNoninteractiveElementToInteractiveRole a11y/noNoninteractiveTabindex a11y/noPositiveTabindex a11y/noRedundantAlt a11y/noRedundantRoles a11y/noStaticElementInteractions a11y/noSvgWithoutTitle a11y/useAltText a11y/useAnchorContent a11y/useAriaActivedescendantWithTabindex a11y/useAriaPropsForRole a11y/useAriaPropsSupportedByRole a11y/useButtonType a11y/useFocusableInteractive a11y/useGenericFontNames a11y/useHeadingContent a11y/useHtmlLang a11y/useIframeTitle a11y/useKeyWithClickEvents a11y/useKeyWithMouseEvents a11y/useMediaCaption a11y/useSemanticElements a11y/useValidAnchor a11y/useValidAriaProps a11y/useValidAriaRole a11y/useValidAriaValues a11y/useValidAutocomplete a11y/useValidLang complexity/noAdjacentSpacesInRegex complexity/noArguments complexity/noBannedTypes complexity/noCommaOperator complexity/noEmptyTypeParameters complexity/noExcessiveNestedTestSuites complexity/noExtraBooleanCast complexity/noFlatMapIdentity complexity/noStaticOnlyClass complexity/noThisInStatic complexity/noUselessCatch complexity/noUselessConstructor complexity/noUselessContinue complexity/noUselessEmptyExport complexity/noUselessEscapeInRegex complexity/noUselessFragments complexity/noUselessLabel complexity/noUselessLoneBlockStatements complexity/noUselessRename complexity/noUselessStringConcat complexity/noUselessStringRaw complexity/noUselessSwitchCase complexity/noUselessTernary complexity/noUselessThisAlias complexity/noUselessTypeConstraint complexity/noUselessUndefinedInitialization complexity/noVoid complexity/useArrowFunction complexity/useDateNow complexity/useFlatMap complexity/useLiteralKeys complexity/useNumericLiterals complexity/useOptionalChain complexity/useRegexLiterals complexity/useSimpleNumberKeys complexity/useWhile correctness/noChildrenProp correctness/noConstAssign correctness/noConstantCondition correctness/noConstantMathMinMaxClamp correctness/noConstructorReturn correctness/noEmptyCharacterClassInRegex correctness/noEmptyPattern correctness/noGlobalObjectCalls correctness/noInnerDeclarations correctness/noInvalidBuiltinInstantiation correctness/noInvalidConstructorSuper correctness/noInvalidDirectionInLinearGradient correctness/noInvalidGridAreas correctness/noInvalidPositionAtImportRule correctness/noMissingVarFunction correctness/noNonoctalDecimalEscape correctness/noPrecisionLoss correctness/noRenderReturnValue correctness/noSelfAssign correctness/noSetterReturn correctness/noStringCaseMismatch correctness/noSwitchDeclarations correctness/noUnknownFunction correctness/noUnknownMediaFeatureName correctness/noUnknownProperty correctness/noUnknownPseudoClass correctness/noUnknownPseudoElement correctness/noUnknownTypeSelector correctness/noUnknownUnit correctness/noUnmatchableAnbSelector correctness/noUnreachable correctness/noUnreachableSuper correctness/noUnsafeFinally correctness/noUnsafeOptionalChaining correctness/noUnusedFunctionParameters correctness/noUnusedImports correctness/noUnusedLabels correctness/noUnusedPrivateClassMembers correctness/noUnusedVariables correctness/noVoidElementsWithChildren correctness/noVoidTypeReturn correctness/useExhaustiveDependencies correctness/useHookAtTopLevel correctness/useIsNan correctness/useJsxKeyInIterable correctness/useValidForDirection correctness/useValidTypeof correctness/useYield nursery/noAwaitInLoop nursery/noBitwiseOperators nursery/noConstantBinaryExpression nursery/noFloatingPromises nursery/noGlobalDirnameFilename nursery/noImplicitCoercion nursery/noImportCycles nursery/noImportantStyles nursery/noNestedComponentDefinitions nursery/noNoninteractiveElementInteractions nursery/noProcessGlobal nursery/noReactPropAssign nursery/noTsIgnore nursery/noUnassignedVariables nursery/noUnknownAtRule nursery/noUselessBackrefInRegex nursery/noUselessEscapeInString nursery/noUselessUndefined nursery/useAdjacentGetterSetter nursery/useConsistentObjectDefinition nursery/useConsistentResponse nursery/useExhaustiveSwitchCases nursery/useExportsLast nursery/useGoogleFontPreconnect nursery/useIndexOf nursery/useJsonImportAttribute nursery/useNumericSeparators nursery/useObjectSpread nursery/useParseIntRadix nursery/useReadonlyClassProperties nursery/useSingleJsDocAsterisk nursery/useSymbolDescription nursery/useUnifiedTypeSignature nursery/useUniqueElementIds performance/noAccumulatingSpread performance/noBarrelFile performance/noDelete performance/noDynamicNamespaceImportAccess performance/noNamespaceImport performance/noReExportAll performance/useTopLevelRegex security/noBlankTarget security/noDangerouslySetInnerHtml security/noDangerouslySetInnerHtmlWithChildren security/noGlobalEval style/noCommonJs style/noDefaultExport style/noDescendingSpecificity style/noDoneCallback style/noInferrableTypes style/noNamespace style/noNegationElse style/noNestedTernary style/noNonNullAssertion style/noParameterAssign style/noProcessEnv style/noShoutyConstants style/noSubstr style/noUnusedTemplateLiteral style/noUselessElse style/noValueAtRule style/noYodaExpression style/useArrayLiterals style/useAsConstAssertion style/useAtIndex style/useBlockStatements style/useCollapsedElseIf style/useCollapsedIf style/useConsistentArrayType style/useConsistentBuiltinInstantiation style/useConsistentMemberAccessibility style/useConst style/useDefaultParameterLast style/useDeprecatedReason style/useEnumInitializers style/useExplicitLengthCheck style/useExponentiationOperator style/useExportType style/useForOf style/useImportType style/useLiteralEnumMembers style/useNamingConvention style/useNodeAssertStrict style/useNumberNamespace style/useSelfClosingElements style/useShorthandAssign style/useShorthandFunctionType style/useSingleVarDeclarator style/useTemplate style/useThrowNewError style/useThrowOnlyError style/useTrimStartEnd suspicious/noAlert suspicious/noApproximativeNumericConstant suspicious/noArrayIndexKey suspicious/noAssignInExpressions suspicious/noAsyncPromiseExecutor suspicious/noCatchAssign suspicious/noClassAssign suspicious/noCommentText suspicious/noCompareNegZero suspicious/noConfusingLabels suspicious/noConfusingVoidType suspicious/noConsole suspicious/noConstEnum suspicious/noControlCharactersInRegex suspicious/noDebugger suspicious/noDocumentCookie suspicious/noDoubleEquals suspicious/noDuplicateAtImportRules suspicious/noDuplicateCase suspicious/noDuplicateClassMembers suspicious/noDuplicateCustomProperties suspicious/noDuplicateElseIf suspicious/noDuplicateFields suspicious/noDuplicateFontNames suspicious/noDuplicateJsxProps suspicious/noDuplicateObjectKeys suspicious/noDuplicateParameters suspicious/noDuplicateProperties suspicious/noDuplicateSelectorsKeyframeBlock suspicious/noDuplicateTestHooks suspicious/noEmptyBlock suspicious/noEmptyBlockStatements suspicious/noEvolvingTypes suspicious/noExplicitAny suspicious/noExportsInTest suspicious/noExtraNonNullAssertion suspicious/noFallthroughSwitchClause suspicious/noFocusedTests suspicious/noFunctionAssign suspicious/noGlobalAssign suspicious/noGlobalIsFinite suspicious/noGlobalIsNan suspicious/noImplicitAnyLet suspicious/noImportAssign suspicious/noImportantInKeyframe suspicious/noIrregularWhitespace suspicious/noLabelVar suspicious/noMisleadingCharacterClass suspicious/noMisleadingInstantiator suspicious/noMisplacedAssertion suspicious/noMisrefactoredShorthandAssign suspicious/noOctalEscape suspicious/noPrototypeBuiltins suspicious/noRedeclare suspicious/noSelfCompare suspicious/noShadowRestrictedNames suspicious/noShorthandPropertyOverrides suspicious/noSkippedTests suspicious/noSparseArray suspicious/noSuspiciousSemicolonInJsx suspicious/noTemplateCurlyInString suspicious/noThenProperty suspicious/noUnsafeDeclarationMerging suspicious/noUnsafeNegation suspicious/noVar suspicious/noWith suspicious/useAdjacentOverloadSignatures suspicious/useDefaultSwitchClauseLast suspicious/useErrorMessage suspicious/useGetterReturn suspicious/useGoogleFontDisplay suspicious/useGuardForIn suspicious/useIsArray suspicious/useNamespaceKeyword suspicious/useNumberToFixedDigitsArgument suspicious/useStrictMode ``` ### Rule name lint/nursery/useReadonlyClassProperties ### Playground link https://biomejs.dev/playground/?lintRules=all&code=YwBsAGEAcwBzACAARgBvAG8AIAB7AAoAIAAgAHAAcgBpAHYAYQB0AGUAIABfAHYAYQBsAHUAZQA6ACAAcwB0AHIAaQBuAGcAIAA9ACAAIgAiADsACgAKACAAIABnAGUAdAAgAHYAYQBsAHUAZQAoACkAOgAgAHMAdAByAGkAbgBnACAAewAKACAAIAAgACAAaQBmACAAKAAhAHQAaABpAHMALgBfAHYAYQBsAHUAZQApACAAewAKACAAIAAgACAAIAAgAHQAaABpAHMALgBfAHYAYQBsAHUAZQAgAD0AIAAiAGYAbwBvACIAOwAKACAAIAAgACAAfQAKAAoAIAAgACAAIAByAGUAdAB1AHIAbgAgAHQAaABpAHMALgBfAHYAYQBsAHUAZQA7AAoAIAAgAH0ACgB9AA%3D%3D&language=ts ### Expected result The `_value` member should not flagged. It seems that the rule does not check assignments in getters. ### Code of Conduct - [x] I agree to follow Biome's Code of Conduct