Skip to content

Rules

The progress of all rule implementations is tracked here.

  • Total number of rules: 448
  • Rules turned on by default: 97

Correctness (172):

Code that is outright wrong or useless.

Rule nameSourceDefaultFixable?
for-directioneslint⚠️🛠️️
no-async-promise-executoreslint
no-callereslint
no-class-assigneslint
no-compare-neg-zeroeslint🛠️💡
no-cond-assigneslint
no-const-assigneslint
no-constant-binary-expressioneslint
no-constant-conditioneslint
no-control-regexeslint
no-debuggereslint🛠️
no-delete-vareslint
no-dupe-class-memberseslint
no-dupe-else-ifeslint
no-dupe-keyseslint
no-duplicate-caseeslint
no-empty-character-classeslint
no-empty-patterneslint
no-empty-static-blockeslint💡
no-ex-assigneslint
no-extra-boolean-casteslint🚧
no-func-assigneslint
no-global-assigneslint
no-import-assigneslint
no-invalid-regexpeslint
no-irregular-whitespaceeslint
no-loss-of-precisioneslint
no-new-native-nonconstructoreslint
no-nonoctal-decimal-escapeeslint🚧
no-obj-callseslint
no-self-assigneslint
no-setter-returneslint
no-shadow-restricted-nameseslint
no-sparse-arrayseslint
no-this-before-supereslint
no-unsafe-finallyeslint
no-unsafe-negationeslint🛠️
no-unsafe-optional-chainingeslint
no-unused-labelseslint🛠️
no-unused-private-class-memberseslint
no-unused-varseslint⚠️💡
no-useless-catcheslint
no-useless-escapeeslint🛠️
no-useless-renameeslint
no-witheslint
require-yieldeslint
use-isnaneslint🛠️
valid-typeofeslint🛠️
defaultimport
namedimport
namespaceimport
expect-expectjest
no-conditional-expectjest
no-disabled-testsjest
no-exportjest
no-focused-testsjest🛠️
no-standalone-expectjest
require-to-throw-messagejest
valid-describe-callbackjest
valid-expectjest
valid-titlejest🛠️
check-property-namesjsdoc
check-tag-namesjsdoc
implements-on-classesjsdoc
no-defaultsjsdoc
require-propertyjsdoc
require-property-descriptionjsdoc
require-property-namejsdoc
require-property-typejsdoc
require-yieldsjsdoc
alt-textjsx_a11y
anchor-has-contentjsx_a11y💡
anchor-is-validjsx_a11y
aria-activedescendant-has-tabindexjsx_a11y
aria-propsjsx_a11y🛠️
aria-rolejsx_a11y
aria-unsupported-elementsjsx_a11y🛠️
autocomplete-validjsx_a11y
click-events-have-key-eventsjsx_a11y
heading-has-contentjsx_a11y
html-has-langjsx_a11y
iframe-has-titlejsx_a11y
img-redundant-altjsx_a11y
label-has-associated-controljsx_a11y
langjsx_a11y
media-has-captionjsx_a11y
mouse-events-have-key-eventsjsx_a11y
no-access-keyjsx_a11y💡
no-aria-hidden-on-focusablejsx_a11y🛠️
no-autofocusjsx_a11y🛠️
no-distracting-elementsjsx_a11y
no-redundant-rolesjsx_a11y🛠️
prefer-tag-over-rolejsx_a11y
role-has-required-aria-propsjsx_a11y
role-supports-aria-propsjsx_a11y
scopejsx_a11y🛠️
tabindex-no-positivejsx_a11y🚧
google-font-displaynextjs
google-font-preconnectnextjs
inline-script-idnextjs
next-script-for-ganextjs
no-assign-module-variablenextjs
no-async-client-componentnextjs
no-before-interactive-script-outside-documentnextjs
no-css-tagsnextjs
no-document-import-in-pagenextjs
no-duplicate-headnextjs
no-head-elementnextjs
no-head-import-in-documentnextjs
no-img-elementnextjs
no-page-custom-fontnextjs
no-script-component-in-headnextjs
no-styled-jsx-in-documentnextjs
no-sync-scriptsnextjs
no-title-in-document-headnextjs
no-typosnextjs🚧
no-unwanted-polyfillionextjs
bad-array-method-on-argumentsoxc
bad-char-at-comparisonoxc
bad-comparison-sequenceoxc
bad-min-max-funcoxc
bad-object-literal-comparisonoxc
bad-replace-all-argoxc
const-comparisonsoxc
double-comparisonsoxc🛠️
erasing-opoxc💡
missing-throwoxc💡
number-arg-out-of-rangeoxc
only-used-in-recursionoxc⚠️🛠️️
uninvoked-array-callbackoxc
no-callback-in-promisepromise
no-new-staticspromise🛠️
valid-paramspromise
jsx-keyreact
jsx-no-duplicate-propsreact
jsx-no-target-blankreact
jsx-no-undefreact
jsx-props-no-spread-multireact🛠️
no-children-propreact
no-danger-with-childrenreact
no-direct-mutation-statereact
no-find-dom-nodereact
no-is-mountedreact
no-render-return-valuereact
no-string-refsreact
void-dom-elements-no-childrenreact
api-keyssecurity
no-duplicate-enum-valuestypescript
no-extra-non-null-assertiontypescript
no-misused-newtypescript
no-non-null-asserted-optional-chaintypescript
no-this-aliastypescript
no-unsafe-declaration-mergingtypescript
no-useless-empty-exporttypescript🛠️
no-wrapper-object-typestypescript🛠️
prefer-as-consttypescript🛠️
triple-slash-referencetypescript
no-await-in-promise-methodsunicorn
no-document-cookieunicorn
no-empty-fileunicorn
no-invalid-remove-event-listenerunicorn
no-new-arrayunicorn🚧
no-single-promise-in-promise-methodsunicorn🛠️
no-thenableunicorn
no-unnecessary-awaitunicorn🛠️
no-useless-fallback-in-spreadunicorn🛠️
no-useless-length-checkunicorn🚧
no-useless-spreadunicorn⚠️🛠️️
prefer-set-sizeunicorn🛠️
prefer-string-starts-ends-withunicorn🛠️
no-conditional-testsvitest
require-local-test-context-for-concurrent-snapshotsvitest🚧

Perf (6):

Code that can be written to run faster.

Rule nameSourceDefaultFixable?
no-await-in-loopeslint
no-accumulating-spreadoxc
jsx-no-jsx-as-propreact_perf
jsx-no-new-array-as-propreact_perf
jsx-no-new-function-as-propreact_perf
jsx-no-new-object-as-propreact_perf

Restriction (59):

Lints which prevent the use of language and library features. Must not be enabled as a whole, should be considered on a case-by-case basis before enabling.

Rule nameSourceDefaultFixable?
default-caseeslint
no-alerteslint
no-bitwiseeslint
no-consoleeslint
no-div-regexeslint🛠️
no-emptyeslint💡
no-empty-functioneslint
no-eq-nulleslint⚠️🛠️️
no-evaleslint
no-iteratoreslint🚧
no-pluspluseslint💡
no-protoeslint🚧
no-regex-spaceseslint🚧
no-restricted-globalseslint
no-undefinedeslint
no-vareslint🛠️
no-voideslint🚧
unicode-bomeslint🛠️
no-amdimport
no-commonjsimport
no-cycleimport
no-default-exportimport
no-dynamic-requireimport
no-webpack-loader-syntaximport
unambiguousimport
check-accessjsdoc
empty-tagsjsdoc
no-new-requirenode
bad-bitwise-operatoroxc
no-async-awaitoxc
no-barrel-fileoxc
no-const-enumoxc🛠️
no-optional-chainingoxc
no-rest-spread-propertiesoxc
catch-or-returnpromise
spec-onlypromise
button-has-typereact
no-dangerreact
no-unknown-propertyreact🚧
explicit-function-return-typetypescript
no-dynamic-deletetypescript
no-explicit-anytypescript🛠️
no-import-type-side-effectstypescript🛠️
no-namespacetypescript
no-non-null-asserted-nullish-coalescingtypescript
no-non-null-assertiontypescript
no-var-requirestypescript
prefer-literal-enum-membertypescript
no-abusive-eslint-disableunicorn
no-anonymous-default-exportunicorn
no-array-for-eachunicorn🚧
no-array-reduceunicorn
no-length-as-slice-endunicorn🛠️
no-magic-array-flat-depthunicorn
no-nested-ternaryunicorn🛠️
no-process-exitunicorn🚧
prefer-modern-math-apisunicorn🚧
prefer-node-protocolunicorn🛠️
prefer-number-propertiesunicorn🚧

Suspicious (22):

code that is most likely wrong or useless.

Rule nameSourceDefaultFixable?
no-extend-nativeeslint
no-neweslint
no-unexpected-multilineeslint⚠️🛠️️
no-useless-concateslint
no-useless-constructoreslint🛠️
no-duplicatesimport
no-named-as-defaultimport
no-named-as-default-memberimport
no-self-importimport
no-commented-out-testsjest
approx-constantoxc
misrefactored-assign-opoxc🚧
no-async-endpoint-handlersoxc
iframe-missing-sandboxreact🚧
jsx-no-comment-textnodesreact
react-in-jsx-scopereact
style-prop-objectreact
no-confusing-non-null-assertiontypescript🚧
no-extraneous-classtypescript
no-unnecessary-type-constrainttypescript
consistent-function-scopingunicorn🚧
prefer-add-event-listenerunicorn🚧

Pedantic (73):

Lints which are rather strict or have occasional false positives.

Rule nameSourceDefaultFixable?
array-callback-returneslint
eqeqeqeslint🛠️
max-classes-per-fileeslint
max-lineseslint
no-array-constructoreslint🚧
no-case-declarationseslint
no-constructor-returneslint
no-else-returneslint🛠️
no-fallthrougheslint🚧
no-inner-declarationseslint
no-new-wrapperseslint🚧
no-prototype-builtinseslint
no-redeclareeslint
no-self-compareeslint
no-throw-literaleslint💡
radixeslint
require-awaiteslint
sort-varseslint🚧
symbol-descriptioneslint
max-dependenciesimport
no-conditional-in-testjest
require-paramjsdoc
require-param-descriptionjsdoc
require-param-namejsdoc
require-param-typejsdoc
require-returnsjsdoc
require-returns-descriptionjsdoc
require-returns-typejsdoc
checked-requires-onchange-or-readonlyreact
jsx-no-useless-fragmentreact
no-unescaped-entitiesreact
ban-ts-commenttypescript🛠️
ban-typestypescript🚧
no-unsafe-function-typetypescript
prefer-enum-initializerstypescript🚧
prefer-ts-expect-errortypescript🛠️
consistent-empty-array-spreadunicorn💡
escape-caseunicorn🛠️
explicit-length-checkunicorn🛠️
new-for-builtinsunicorn
no-hex-escapeunicorn🛠️
no-instanceof-arrayunicorn🛠️
no-lonely-ifunicorn
no-negated-conditionunicorn🚧
no-negation-in-equality-checkunicorn🚧
no-new-bufferunicorn🚧
no-object-as-default-parameterunicorn
no-static-only-classunicorn🚧
no-this-assignmentunicorn
no-typeof-undefinedunicorn🚧
no-unreadable-iifeunicorn
no-useless-promise-resolve-rejectunicorn🛠️
no-useless-switch-caseunicorn🚧
no-useless-undefinedunicorn🛠️
prefer-array-flatunicorn🛠️
prefer-array-someunicorn🛠️
prefer-blob-reading-methodsunicorn🚧
prefer-code-pointunicorn🛠️
prefer-date-nowunicorn🛠️
prefer-dom-node-appendunicorn🛠️
prefer-dom-node-datasetunicorn🚧
prefer-dom-node-removeunicorn
prefer-event-targetunicorn
prefer-math-min-maxunicorn🛠️
prefer-math-truncunicorn🚧
prefer-native-coercion-functionsunicorn🚧
prefer-prototype-methodsunicorn🛠️
prefer-query-selectorunicorn🛠️
prefer-regexp-testunicorn🛠️
prefer-string-replace-allunicorn🛠️
prefer-string-sliceunicorn🛠️
prefer-type-errorunicorn🛠️
require-number-to-fixed-digits-argumentunicorn🛠️

Style (105):

Code that should be written in a more idiomatic way.

Rule nameSourceDefaultFixable?
default-case-lasteslint
default-param-lasteslint
func-nameseslint🛠️💡
guard-for-ineslint
max-paramseslint
no-continueeslint
no-label-vareslint
no-magic-numberseslint🚧
no-multi-streslint
no-new-funceslint
no-return-assigneslint🚧
no-script-urleslint
no-template-curly-in-stringeslint🚧
no-ternaryeslint
prefer-exponentiation-operatoreslint
prefer-numeric-literalseslint🛠️
prefer-object-has-owneslint🛠️
sort-importseslint🛠️
sort-keyseslint🚧
firstimport🚧
consistent-test-itjest🛠️
max-expectsjest
max-nested-describejest
no-alias-methodsjest🛠️
no-confusing-set-timeoutjest
no-deprecated-functionsjest🛠️
no-done-callbackjest
no-duplicate-hooksjest
no-hooksjest
no-identical-titlejest
no-interpolation-in-snapshotsjest
no-jasmine-globalsjest🛠️
no-large-snapshotsjest
no-mocks-importjest
no-restricted-jest-methodsjest
no-restricted-matchersjest
no-test-prefixesjest🛠️
no-test-return-statementjest
no-untyped-mock-factoryjest🛠️
prefer-called-withjest
prefer-comparison-matcherjest🛠️
prefer-equality-matcherjest
prefer-expect-resolvesjest🛠️
prefer-hooks-in-orderjest
prefer-hooks-on-topjest
prefer-jest-mockedjest🛠️
prefer-lowercase-titlejest🛠️
prefer-mock-promise-shorthandjest🛠️
prefer-spy-onjest🛠️
prefer-strict-equaljest🛠️
prefer-to-bejest🛠️
prefer-to-containjest
prefer-to-have-lengthjest🛠️
prefer-todojest🛠️
require-hookjest
require-top-level-describejest
no-exports-assignnode🛠️
avoid-newpromise
param-namespromise
prefer-await-to-callbackspromise
prefer-await-to-thenpromise
jsx-boolean-valuereact🛠️
jsx-curly-brace-presencereact
no-set-statereact
prefer-es6-classreact
self-closing-compreact🚧
adjacent-overload-signaturestypescript
array-typetypescript🛠️
ban-tslint-commenttypescript🛠️
consistent-indexed-object-styletypescript🛠️
consistent-type-definitionstypescript🛠️
no-empty-interfacetypescript
prefer-for-oftypescript🚧
prefer-function-typetypescript🛠️
prefer-namespace-keywordtypescript🛠️
catch-error-nameunicorn🚧
empty-brace-spacesunicorn🛠️
error-messageunicorn
filename-caseunicorn
no-await-expression-memberunicorn🚧
no-console-spacesunicorn🛠️
no-nullunicorn🛠️
no-unreadable-array-destructuringunicorn
no-zero-fractionsunicorn🛠️
number-literal-caseunicorn🛠️
numeric-separators-styleunicorn🛠️
prefer-array-flat-mapunicorn🛠️
prefer-dom-node-text-contentunicorn🛠️
prefer-includesunicorn🚧
prefer-logical-operator-over-ternaryunicorn🚧
prefer-modern-dom-apisunicorn🚧
prefer-optional-catch-bindingunicorn🛠️
prefer-reflect-applyunicorn
prefer-spreadunicorn🛠️
prefer-string-trim-start-endunicorn🛠️
prefer-structured-cloneunicorn🚧
require-array-join-separatorunicorn🛠️
switch-case-bracesunicorn🛠️
text-encoding-identifier-caseunicorn🛠️
throw-new-errorunicorn🛠️
no-import-node-testvitest🛠️
prefer-eachvitest
prefer-to-be-falsyvitest🛠️
prefer-to-be-objectvitest🛠️
prefer-to-be-truthyvitest🛠️

Nursery (11):

New lints that are still under development.

Rule nameSourceDefaultFixable?
constructor-supereslint
getter-returneslint
no-undefeslint
no-unreachableeslint
exportimport
no-map-spreadoxc🛠️💡
no-return-in-finallypromise
require-render-returnreact
rules-of-hooksreact
no-side-effects-in-initializationtree_shaking
consistent-type-importstypescript🛠️

Released under the MIT License.