Rules
Accessibility
Rules focused on preventing accessibility problems.
noAutofocus recommended
Avoid the autoFocus attribute
noPositiveTabindex recommended
Prevent the usage of positive integers on tabIndex property
useAltText recommended
It asserts that alternative text to images or areas, help to rely on to screen readers to understand the purpose and the context of the image.
useAnchorContent recommended
Enforce that anchor elements have content and that the content is accessible to screen readers.
useBlankTarget recommended
Disallow target=“_blank” attribute without rel=“noreferrer”
useButtonType recommended
Enforces the usage of the attribute type for the element button
useKeyWithClickEvents recommended
Enforce to have the onClick mouse event with the onKeyUp, the onKeyDown, or the onKeyPress keyboard event.
useKeyWithMouseEvents recommended
Enforce that onMouseOver/onMouseOut are accompanied by onFocus/onBlur for keyboard-only users. It is important to take into account users with physical disabilities who cannot use a mouse, who use assistive technology or screenreader.
useValidAnchor recommended
Enforce that all anchors are valid, and they are navigable elements.
Complexity
Rules that focus on inspecting complex code that could be simplified.
noExtraBooleanCast recommended
Disallow unnecessary boolean casts
useSimplifiedLogicExpression recommended
Discard redundant terms from logical expressions.
Correctness
Rules that detect incorrect or useless code.
noArguments recommended
Disallow the use of arguments
noArrayIndexKey recommended
Discourage the usage of Array index in keys.
noAsyncPromiseExecutor recommended
Disallows using an async function as a Promise executor.
noCatchAssign recommended
Disallow reassigning exceptions in catch clauses
noChildrenProp recommended
Prevent passing of children as props.
noCommentText recommended
Prevent comments from being inserted as text nodes
noCompareNegZero recommended
Disallow comparing against -0
noDebugger recommended
Disallow the use of debugger
noDelete recommended
Disallow the use of the delete operator
noDoubleEquals recommended
Require the use of === and !==
noDupeArgs recommended
Disallow duplicate function arguments name.
noEmptyPattern recommended
Disallows empty destructuring patterns.
noFunctionAssign recommended
Disallow reassigning function declarations.
noImportAssign recommended
Disallow assigning to imported bindings
noLabelVar recommended
Disallow labels that share a name with a variable
noMultipleSpacesInRegularExpressionLiterals recommended
Disallow unclear usage of multiple space characters in regular expression literals
noNewSymbol recommended
Disallow new operators with the Symbol object
noRenderReturnValue recommended
Prevent the usage of the return value of React.render.
noRestrictedGlobals
This rule allows you to specify global variable names that you don’t want to use in your application.
noShadowRestrictedNames recommended
Disallow identifiers from shadowing restricted names.
noSparseArray recommended
Disallow sparse arrays
noUndeclaredVariables
Prevents the usage of variables that haven’t been declared inside the document
noUnnecessaryContinue recommended
Avoid using unnecessary continue.
noUnreachable recommended
Disallow unreachable code
noUnsafeNegation recommended
Disallow using unsafe negation.
noUnusedVariables
Disallow unused variables.
noUselessFragments
Disallow unnecessary fragments
noVoidElementsWithChildren recommended
This rules prevents void elements (AKA self-closing elements) from having children.
useSingleCaseStatement recommended
Enforces case clauses have a single statement, emits a quick fix wrapping the statements in a block
useValidTypeof recommended
This rule verifies the result of typeof $expr unary expressions is being compared to valid values, either string literals containing valid type names or other typeof expressions
useWhile recommended
Enforce the use of while loops instead of for loops when the initializer and update expressions are not needed
Security
Rules that detect potential security flaws.
noDangerouslySetInnerHtml recommended
Prevent the usage of dangerous JSX props
noDangerouslySetInnerHtmlWithChildren recommended
Report when a DOM element or a component uses both children and dangerouslySetInnerHTML prop.
Style
Rules enforcing a consistent way of writing your code.
noImplicitBoolean recommended
Disallow implicit true values on JSX boolean attributes
noNegationElse recommended
Disallow negation in the condition of an if statement if it has an else clause
noShoutyConstants recommended
Disallow the use of constants which its value is the upper-case version of its name.
noUnusedTemplateLiteral recommended
Disallow template literals if interpolation and special-character handling are not needed
useBlockStatements recommended
Requires following curly brace conventions. JavaScript allows the omission of curly braces when a block contains only one statement. However, it is considered by many to be best practice to never omit curly braces around blocks, even when they are optional, because it can lead to bugs and reduces code clarity.
useFragmentSyntax
This rule enforces the use of <>…</> over <Fragment>…</Fragment>.
useOptionalChain recommended
Enforce using concise optional chain instead of chained logical expressions.
useSelfClosingElements recommended
Prevent extra closing tags for components without children
useShorthandArrayType recommended
When expressing array types, this rule promotes the usage of T[] shorthand instead of Array<T>.
useSingleVarDeclarator recommended
Disallow multiple variable declarations in the same variable statement
useTemplate recommended
Template literals are preferred over string concatenation.
Nursery
New rules that are still under development.
Nursery rules require explicit opt-in via configuration because they may still have bugs or performance problems. Nursery rules get promoted to other groups once they become stable or may be removed.
Rules that belong to this group are not subject to semantic version.
noAccessKey recommended
Enforce that the accessKey attribute is not used on any HTML element.
noBannedTypes
Disallow certain types.
noConditionalAssignment
Disallow assignment operators in conditional expressions.
noConstAssign
Prevents from having const variables being re-assigned.
noConstEnum
Disallow TypeScript const enum
noConstructorReturn
Disallow returning a value from a constructor
noDistractingElements
Enforces that no distracting elements are used.
noDupeKeys
Prevents object literals having more than one property declaration for the same name. If an object property with the same name is defined multiple times (except when combining a getter with a setter), only the last definition makes it into the object and previous definitions are ignored, which is likely a mistake.
noEmptyInterface
Disallow the declaration of empty interfaces.
noExplicitAny
Disallow the any type usage
noExtraNonNullAssertion
Prevents the wrong usage of the non-null assertion operator (!) in TypeScript files.
noHeaderScope
Check that the scope attribute is only used on th elements.
noInvalidConstructorSuper
Prevents the incorrect use of super() inside classes. It also checks whether a call super() is missing from classes that extends other constructors.
noNonNullAssertion
Disallow non-null assertions using the ! postfix operator.
noPrecisionLoss
Disallow literal numbers that lose precision
noRedundantUseStrict
Prevents from having redundant “use strict”.
noSetterReturn
Disallow returning a value from a setter
noStringCaseMismatch
Disallow comparison of expressions modifying the string case with non-compliant value.
noUnsafeFinally
Disallow control flow statements in finally blocks.
noVar
Disallow the use of var
noVoidTypeReturn
Disallow returning a value from a function with the return type ‘void’
useAriaPropTypes
Enforce that ARIA state and property values are valid.
useAriaPropsForRole
Enforce that elements with ARIA roles must have all required attributes for that role
useCamelCase
Enforce camel case naming convention.
useConst
Require const declarations for variables that are never reassigned after declared.
useDefaultSwitchClauseLast
Enforce default clauses in switch statements to be last
useExhaustiveDependencies
Enforce all dependencies are correctly specified.
useFlatMap
Promotes the use of .flatMap() when map().flat() are used together.
useNumericLiterals
Disallow parseInt() and Number.parseInt() in favor of binary, octal, and hexadecimal literals
useValidForDirection
Enforce “for” loop update clause moving the counter in the right direction.