Update typescript-eslint monorepo to v8 (major)

[renovate]

ℹ️ Note

This PR body was truncated due to platform limits.

This PR contains the following updates:

Package	Change	Age	Confidence
@typescript-eslint/eslint-plugin (source)	6.21.0 → 8.56.0
@typescript-eslint/parser (source)	6.21.0 → 8.56.0

---

Release Notes

typescript-eslint/typescript-eslint (@​typescript-eslint/eslint-plugin)

v8.56.0

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🚀 Features

• support ESLint v10 (#​12057)

🩹 Fixes

• use parser options from context.languageOptions (#​12043)

❤️ Thank You

• Brad Zacher @​bradzacher
• fnx @​DMartens
• Joshua Chen

See GitHub Releases for more information.

You can read about our versioning strategy and releases on our website.

v8.55.0

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🚀 Features

• utils: deprecate defaultOptions in favor of meta.defaultOptions (#​11992)

🩹 Fixes

• eslint-plugin: [no-useless-default-assignment] reduce param index to ts this handling (#​11949)
• eslint-plugin: [no-useless-default-assignment] report unnecessary defaults in ternary expressions (#​11984)
• eslint-plugin: [no-useless-default-assignment] require strictNullChecks (#​11966, #​12000)
• eslint-plugin: [no-unused-vars] remove trailing newline when removing entire import (#​11990)

❤️ Thank You

• Christian Rose @​chrros95
• Josh Goldberg
• Maria Solano @​MariaSolOs
• Minyeong Kim @​minyeong981
• SungHyun627 @​SungHyun627
• Yukihiro Hasegawa @​y-hsgw

See GitHub Releases for more information.

You can read about our versioning strategy and releases on our website.

v8.54.0

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🚀 Features

• eslint-plugin-internal: add prefer-tsutils-methods rule (#​11974, #​11625)
• typescript-estree: add shortcut methods to ParserServicesWithTypeInformation (#​11965, #​11955)

🩹 Fixes

• eslint-plugin: [no-unnecessary-type-assertion] check both base constraint and actual type for non-null assertions (#​11967, #​11559)
• deps: update dependency prettier to v3.8.0 (#​11991)
• scope-manager: fix catch clause scopes def.name (#​11982)
• eslint-plugin: [no-unused-private-class-members] private destructured class member is defined but used (#​11785)

❤️ Thank You

• Brad Zacher @​bradzacher
• Josh Goldberg
• MinJae @​Ju-MINJAE
• Minyeong Kim @​minyeong981
• overlookmotel
• Yuya Yoshioka @​YuyaYoshioka
• 김현수 @​Kimsoo0119

You can read about our versioning strategy and releases on our website.

v8.53.1

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🩹 Fixes

• utils: make RuleCreator root defaultOptions optional (#​11956)
• eslint-plugin: [consistent-indexed-object-style] skip fixer if interface is a default export (#​11951)

❤️ Thank You

• Cameron
• Yukihiro Hasegawa @​y-hsgw

You can read about our versioning strategy and releases on our website.

v8.53.0

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🚀 Features

• eslint-plugin: add rule [strict-void-return] (#​9707)
• eslint-plugin: [no-unused-vars] add a fixer to remove unused imports (#​11922)

🩹 Fixes

• eslint-plugin: [no-useless-default-assignment] fix false positive for parameters corresponding to a rest parameter (#​11916)
• eslint-plugin: replace unclear "error typed" with more helpful description (#​11704)
• typescript-estree: forbid invalid extends and implements in interface declaration (#​11935)
• typescript-estree: forbid invalid class implements (#​11934)
• typescript-estree: forbid type-only import with both default and named specifiers (#​11930)

❤️ Thank You

• Brad Zacher @​bradzacher
• fisker Cheung @​fisker
• Josh Goldberg
• Josh Goldberg ✨
• Kirk Waiblinger
• Niki @​phaux
• Nikita
• SungHyun627 @​SungHyun627
• Will Harney @​wjhsf

You can read about our versioning strategy and releases on our website.

v8.52.0

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🚀 Features

• eslint-plugin-internal: [no-multiple-lines-of-errors] add rule (#​11899)

🩹 Fixes

• eslint-plugin: [no-base-to-string] detect @​@​toPrimitive and valueOf (#​11901)
• eslint-plugin: [no-useless-default-assignment] handle conditional initializer (#​11908)

❤️ Thank You

• Josh Goldberg ✨
• Ulrich Stark

You can read about our versioning strategy and releases on our website.

v8.51.0

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🚀 Features

• eslint-plugin: add namespace to plugin meta (#​11885)
• eslint-plugin: [no-useless-default-assignment] fix some cases to optional syntax (#​11871)

🩹 Fixes

• eslint-plugin: [prefer-optional-chain] handle MemberExpression in final chain position (#​11835)
• eslint-plugin: bump ts-api-utils to 2.2.0 (#​11881)
• eslint-plugin: remove fixable from no-dynamic-delete rule (#​11876)
• eslint-plugin: fix crash and false positives in no-useless-default-assignment (#​11845)

❤️ Thank You

• Josh Goldberg ✨
• Kirk Waiblinger @​kirkwaiblinger
• mdm317
• Ulrich Stark
• Yannick Decat @​mho22

You can read about our versioning strategy and releases on our website.

v8.50.1

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🩹 Fixes

• eslint-plugin: [no-unnecessary-type-assertion] correct handling of undefined vs. void (#​11826)
• eslint-plugin: [method-signature-style] ignore methods that return this (#​11813)

❤️ Thank You

• Josh Goldberg ✨
• Tamashoo @​Tamashoo

You can read about our versioning strategy and releases on our website.

v8.50.0

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🚀 Features

• eslint-plugin: [no-useless-default-assignment] add rule (#​11720)

❤️ Thank You

• Josh Goldberg ✨
• Ulrich Stark

You can read about our versioning strategy and releases on our website.

v8.49.0

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🚀 Features

• eslint-plugin: use Intl.Segmenter instead of graphemer (#​11804)

🩹 Fixes

• deps: update dependency prettier to v3.7.2 (#​11820)

❤️ Thank You

• Justin McBride
• Kirk Waiblinger @​kirkwaiblinger

You can read about our versioning strategy and releases on our website.

v8.48.1

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🩹 Fixes

• eslint-plugin: [restrict-template-expressions] check base types in allow list (#​11764, #​11759)
• eslint-plugin: honor ignored base types on generic classes (#​11767)
• eslint-plugin: [consistent-type-exports] check value flag before resolving alias (#​11769)

❤️ Thank You

• Josh Goldberg
• OleksandraKordonets
• SangheeSon @​Higangssh
• tao

You can read about our versioning strategy and releases on our website.

v8.48.0

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🚀 Features

• eslint-plugin: [no-redundant-type-constituents] use assignability checking for redundancy checks (#​10744)

🩹 Fixes

• typescript-estree: disallow binding patterns in parameter properties (#​11760)
• eslint-plugin: [consistent-generic-constructors] ignore when constructor is typed array (#​10477)

❤️ Thank You

• Dima Barabash @​dbarabashh
• JamesHenry @​JamesHenry
• Josh Goldberg
• mdm317 @​gen-ip-1

You can read about our versioning strategy and releases on our website.

v8.47.0

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🚀 Features

• eslint-plugin: [no-unused-private-class-members] new extension rule (#​10913)

❤️ Thank You

• Brad Zacher @​bradzacher

You can read about our versioning strategy and releases on our website.

v8.46.4

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🩹 Fixes

• parser: error when both projectService and project are set (#​11333)
• eslint-plugin: handle override modifier in promise-function-async fixer (#​11730)
• eslint-plugin: [no-deprecated] fix double-report on computed literal identifiers (#​11006, #​10958)

❤️ Thank You

• Evgeny Stepanovych @​undsoft
• Kentaro Suzuki @​sushichan044
• Maria Solano @​MariaSolOs

You can read about our versioning strategy and releases on our website.

v8.46.3

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🩹 Fixes

• eslint-plugin: [no-duplicate-enum-values] support signed numbers (#​11722, #​11723)
• eslint-plugin: [no-misused-promises] expand union type to retrieve target property (#​11706)

❤️ Thank You

• Evgeny Stepanovych @​undsoft
• tao

You can read about our versioning strategy and releases on our website.

v8.46.2

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🩹 Fixes

• eslint-plugin: [prefer-optional-chain] skip optional chaining when it could change the result (#​11702)

❤️ Thank You

• mdm317

You can read about our versioning strategy and releases on our website.

v8.46.1

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🩹 Fixes

• eslint-plugin: [no-misused-promises] special-case .finally not to report when a promise returning function is provided as an argument (#​11667)
• eslint-plugin: [prefer-optional-chain] include mixed "nullish comparison style" chains in checks (#​11533)

❤️ Thank You

• mdm317
• Ronen Amiel

You can read about our versioning strategy and releases on our website.

v8.46.0

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🚀 Features

• eslint-plugin: [no-unsafe-member-access] add allowOptionalChaining option (#​11659)
• rule-schema-to-typescript-types: clean up and make public (#​11633)

🩹 Fixes

• eslint-plugin: [prefer-readonly-parameter-types] ignore tagged primitives (#​11660)
• typescript-estree: forbid abstract method and accessor to have implementation (#​11657)
• eslint-plugin: removed error type previously deprecated (#​11674)
• eslint-plugin: [no-deprecated] ignore deprecated export imports (#​11603)
• eslint-plugin: [unbound-method] improve wording around this: void and binding (#​11634)
• rule-tester: deprecate TestCaseError#type and LintMessage#nodeType (#​11628)
• eslint-plugin: [no-floating-promises] remove excess parentheses in suggestions (#​11487)

❤️ Thank You

• fisker Cheung @​fisker
• Josh Goldberg ✨
• Kirk Waiblinger @​kirkwaiblinger
• Mark de Dios @​peanutenthusiast
• Richard Torres @​richardtorres314
• Victor Genaev @​mainframev

You can read about our versioning strategy and releases on our website.

v8.45.0

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🚀 Features

• eslint-plugin: expose rule name via RuleModule interface (#​11616)

🩹 Fixes

• eslint-plugin: [prefer-nullish-coalescing] ignoreBooleanCoercion should not apply to top-level ternary expressions (#​11614)
• eslint-plugin: [no-base-to-string] check if superclass is ignored (#​11617)

❤️ Thank You

• mdm317
• Moses Odutusin @​thebolarin
• Yukihiro Hasegawa @​y-hsgw

You can read about our versioning strategy and releases on our website.

v8.44.1

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🩹 Fixes

• eslint-plugin: [await-thenable] should not report passing values to promise aggregators which may be a promise in an array literal (#​11611)
• eslint-plugin: [no-unsafe-enum-comparison] support unions of literals (#​11599)
• eslint-plugin: [no-base-to-string] make ignoredTypeNames match type names without generics (#​11597)

❤️ Thank You

• Kirk Waiblinger @​kirkwaiblinger
• mdm317
• Ronen Amiel

You can read about our versioning strategy and releases on our website.

v8.44.0

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🚀 Features

• eslint-plugin: [await-thenable] report invalid (non-promise) values passed to promise aggregator methods (#​11267)

🩹 Fixes

• eslint-plugin: [no-unnecessary-type-conversion] ignore enum members (#​11490)

❤️ Thank You

• Moses Odutusin @​thebolarin
• Ronen Amiel

You can read about our versioning strategy and releases on our website.

v8.43.0

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🚀 Features

• typescript-estree: disallow empty type parameter/argument lists (#​11563)

🩹 Fixes

• eslint-plugin: [prefer-return-this-type] don't report an error when returning a union type that includes a classType (#​11432)
• eslint-plugin: [no-deprecated] should report deprecated exports and reexports (#​11359)
• eslint-plugin: [no-floating-promises] allowForKnownSafeCalls now supports function names (#​11423, #​11430)
• eslint-plugin: [consistent-type-exports] fix declaration shadowing (#​11457)
• eslint-plugin: [no-unnecessary-type-conversion] only report ~~ on integer literal types (#​11517)
• scope-manager: exclude Program from DefinitionBase node types (#​11469)
• eslint-plugin: [no-non-null-assertion] do not suggest optional chain on LHS of assignment (#​11489)
• type-utils: add union type support to TypeOrValueSpecifier (#​11526)

❤️ Thank You

• Dima @​dbarabashh
• Kirk Waiblinger @​kirkwaiblinger
• mdm317
• tao
• Victor Genaev @​mainframev
• Yukihiro Hasegawa @​y-hsgw
• 민감자(Minji Kim) @​mouse0429
• 송재욱

You can read about our versioning strategy and releases on our website.

v8.42.0

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🩹 Fixes

• deps: update eslint monorepo to v9.33.0 (#​11482)

You can read about our versioning strategy and releases on our website.

v8.41.0

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🩹 Fixes

• deps: update dependency prettier to v3.6.2 (#​11496)

You can read about our versioning strategy and releases on our website.

v8.40.0

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🚀 Features

• typescript-estree: forbid invalid keys in EnumMember (#​11232)

❤️ Thank You

• fisker Cheung @​fisker

You can read about our versioning strategy and releases on our website.

v8.39.1

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This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

You can read about our versioning strategy and releases on our website.

v8.39.0

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🚀 Features

• eslint-plugin: [only-throw-error] support yield/await expressions (#​11417)
• eslint-plugin: add no-unnecessary-type-conversion to strict-type-checked ruleset (#​11427)
• update to TypeScript 5.9.2 (#​11445)
• eslint-plugin: [naming-convention] add enumMember PascalCase default option (#​11127)

🩹 Fixes

• eslint-plugin: [no-unsafe-assignment] add an unsafeObjectPattern message (#​11403)
• eslint-plugin: [prefer-optional-chain] ignore check option for most RHS of a chain (#​11272)

❤️ Thank You

• Brad Zacher @​bradzacher
• James Garbutt @​43081j
• Kim Sang Du @​developer-bandi
• Sasha Kondrashov
• tao
• Younsang Na @​nayounsang

You can read about our versioning strategy and releases on our website.

v8.38.0

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🩹 Fixes

• disallow extra properties in rule options (#​11397)
• eslint-plugin: [consistent-generic-constructors] resolve conflict with isolatedDeclarations if enabled in constructor option (#​11351)

❤️ Thank You

• Andrew Kazakov @​andreww2012
• Younsang Na @​nayounsang

You can read about our versioning strategy and releases on our website.

v8.37.0

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🩹 Fixes

• eslint-plugin: [unified-signatures] fix false positives for ignoreOverloadsWithDifferentJSDoc option (#​11381)

❤️ Thank You

• Yukihiro Hasegawa @​y-hsgw

You can read about our versioning strategy and releases on our website.

v8.36.0

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This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

You can read about our versioning strategy and releases on our website.

v8.35.1

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🩹 Fixes

• remove prettier from eslint-plugin (#​11339)

❤️ Thank You

• Abhijeet Singh @​cseas

You can read about our versioning strategy and releases on our website.

v8.35.0

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🚀 Features

• eslint-plugin: [no-base-to-string] add checkUnknown Option (#​11128)

❤️ Thank You

• Kim Sang Du @​developer-bandi

You can read about our versioning strategy and releases on our website.

v8.34.1

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This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

You can read about our versioning strategy and releases on our website.

v8.34.0

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🩹 Fixes

• typescript-estree: add validation to interface extends (#​11271)

❤️ Thank You

• Tao

You can read about our versioning strategy and releases on our website.

v8.33.1

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🩹 Fixes

• exclude docs/ directory from eslint-plugin package (#​11251)

❤️ Thank You

• roottool

You can read about our versioning strategy and releases on our website.

v8.33.0

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This was a version bump only for eslint-plugin to align it with other projects, there were no code changes.

You can read about our versioning strategy and releases on our website.

v8.32.1

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🩹 Fixes

• eslint-plugin: [consistent-indexed-object-style] check for indirect circular types in aliased mapped types (#​11177)
• eslint-plugin: [consistent-indexed-object-style] adjust auto-fixer to generate valid syntax for TSMappedType with no type annotation (#​11180)
• eslint-plugin: [no-deprecated] support computed member access (#​10867)
• eslint-plugin: [no-unnecessary-type-conversion] shouldn't have fixable property (#​11194)

❤️ Thank You

• Azat S. @​azat-io
• Dima Barabash @​dbarabashh
• Ronen Amiel

You can read about our versioning strategy and releases on our website.

v8.32.0

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🚀 Features

• eslint-plugin: [only-throw-error] add option allowRethrowing (#​11075)
• eslint-plugin: [no-unnecessary-type-conversion] add rule (#​10182)

🩹 Fixes

• eslint-plugin: [prefer-nullish-coalescing] fix parenthesization bug in suggestion (#​11098)
• eslint-plugin: [unified-signatures] exempt this from optional parameter overload check (#​11005)
• eslint-plugin: [no-unnecessary-type-parameters] should parenthesize type in suggestion fixer if necessary (#​10907)

❤️ Thank You

• Andy Edwards
• Kirk Waiblinger @​kirkwaiblinger
• mdm317
• Sasha Kondrashov
• Yukihiro Hasegawa @​y-hsgw

You can read about our versioning strategy and releases on our website.

v8.31.1

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🩹 Fixes

• eslint-plugin: [no-unnecessary-condition] downgrade fix to suggestion (#​11081)

❤️ Thank You

• Kirk Waiblinger @​kirkwaiblinger

You can read about our versioning strategy and releases on our website.

v8.31.0

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🚀 Features

• eslint-plugin: [no-unnecessary-type-assertion] add option to ignore string const assertions (#​10979)

❤️ Thank You

• Nicolas Le Cam

You can read about our versioning strategy and releases on our website.

v8.30.1

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🩹 Fixes

• eslint-plugin: fix mistake with eslintrc config generation (#​11072)

❤️ Thank You

• Kirk Waiblinger @​kirkwaiblinger

You can read about our versioning strategy and releases on our website.

v8.30.0

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🚀 Features

• eslint-plugin: [no-explicit-any] suggest to replace keyof any with PropertyKey (#​11032)

🩹 Fixes

• eslint-plugin: [promise-function-async] use a different error message for functions with promise and non-promise types (#​10950)

❤️ Thank You

• Dima Barabash @​dbarabashh
• Ronen Amiel

You can read about our versioning strategy and releases on our website.

v8.29.1

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🩹 Fixes

• eslint-plugin: [no-deprecated] report on deprecated imported variable used as property (#​10998)

❤️ Thank You

• Ronen Amiel

You can read about our versioning strategy and releases on our website.

v8.29.0

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🚀 Features

• eslint-plugin: [prefer-nullish-coalescing] create ignoreIfStatements option (#​11000)

🩹 Fixes

• eslint-plugin: [no-array-constructor] remove optional chaining exemption (#​10963)
• eslint-plugin: support arbitrary extensions in definition files (#​10957)
• eslint-plugin: [prefer-for-of] fix false positive when using erasable type syntax within update expressions (#​10981)
• eslint-plugin: [use-unknown-in-catch-callback-variable] remove fixable property (#​10993)
• eslint-plugin: [no-unnecessary-condition] don't report on unnecessary optional array index access when noUncheckedIndexedAccess is enabled (#​10961)

❤️ Thank You

• Dima Barabash @​dbarabashh
• Kim Sang Du @​developer-bandi
• Olivier Zalmanski @​OlivierZal
• Ronen Amiel
• Yannick Decat @​mho22
• zyoshoka @​zyoshoka

You can read about our versioning strategy and releases on our website.

v8.28.0

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🚀 Features

• eslint-plugin: [prefer-nullish-coalescing] support if statement assignment (??=) and fix several minor bugs (#​10861)

🩹 Fixes

• eslint-plugin: [no-unsafe-function-type] remove fixable property (#​10986)

❤️ Thank You

• Olivier Zalmanski @​OlivierZal
• Yannick Decat @​mho22

You can read about our versioning strategy and releases on our website.

v8.27.0

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🚀 Features

• utils: support DeprecatedInfo for rule.meta.deprecated (#​10932)

❤️ Thank You

• ntnyq @​ntnyq

You can read about our versioning strategy and releases on our website.

v8.26.1

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🩹 Fixes

• eslint-plugin: [no-unsafe-return] handle recursive type (#​10883)
• eslint-plugin: [prefer-nullish-coalescing] treat any/unknown as eligible for nullish coalescing (#​10865)

❤️ Thank You

• Kirk Waiblinger @​kirkwaiblinger
• YeonJuan @​yeonjuan

You can read about our versioning strategy and releases on our website.

v8.26.0

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🚀 Features

• eslint-plugin: [unified-signatures] support ignoring overload signatures with different JSDoc comments (#​10781)
• eslint-plugin: [explicit-module-boundary-types] add an option to ignore overload implementations (#​10889)
• eslint-plugin: [no-unused-var] handle implicit exports in declaration files (#​10714)
• support TypeScript 5.8 (#​10903)
• eslint-plugin: [no-unnecessary-type-parameters] special case tuples and parameter location arrays as single-use (#​9536)

🩹 Fixes

• eslint-plugin: [no-unnecessary-type-assertion] handle unknown (#​10875)
• eslint-plugin: [no-invalid-void-type] report accessor properties with an invalid void type (#​10864)
• eslint-plugin: [unified-signatures] does not differentiate truly private methods (#​10806)

❤️ Thank You

• Andrea Simone Costa @​jfet97
• Dirk Luijk @​dirkluijk
• Ronen Amiel
• YeonJuan @​yeonjuan
• Yukihiro Hasegawa @​y-hsgw

You can read about our versioning strategy and releases on our website.

v8.25.0

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🚀 Features

• eslint-plugin: [no-misused-spread] add suggestions (#​10719)

🩹 Fixes

• eslint-plugin: [prefer-nullish-coalescing] report on chain expressions in a ternary (#​10708)
• eslint-plugin: [no-deprecated] report usage of deprecated private identifiers (#​10844)
• eslint-plugin: [unified-signatures] handle getter-setter (#​10818)

❤️ Thank You

• Olivier Zalmanski @​OlivierZal
• Ronen Amiel
• YeonJuan @​yeonjuan

You can read about our versioning strategy and releases on our website.

v8.24.1

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🩹 Fixes

• eslint-plugin: [class-methods-use-this] check accessor methods with a function initializer (#​10796)
• eslint-plugin: [no-misused-promises] don't report on static accessor properties (#​10814)
• eslint-plugin: [no-deprecated] don't report on deprecated accessor property declaration (#​10813)
• eslint-plugin: [explicit-member-accessibility] check accessor class properties for missing accessibility modifier (#​10805)
• eslint-plugin: [explic

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