Update eslint (major)

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@typescript-eslint/eslint-plugin (source)	6.21.0 -> 8.41.0
@typescript-eslint/parser (source)	6.21.0 -> 8.41.0
eslint (source)	8.57.1 -> 9.34.0
eslint-config-prettier	8.10.2 -> 10.1.8
eslint-import-resolver-typescript	3.10.1 -> 4.4.4
eslint-plugin-n	14.0.0 -> 17.21.3
eslint-plugin-promise	6.6.0 -> 7.2.1

---

Release Notes

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

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: [explicit-module-boundary-types] check accessor class properties with a function initializer (#​10804)
• eslint-plugin: [prefer-return-this-type] check accessor properties with a function initializer (#​10794)
• eslint-plugin: [consistent-generic-constructors] check accessor class properties (#​10789)
• eslint-plugin: [no-unsafe-assignment] report on an any value assigned as an initializer of an accessor property (#​10785)
• eslint-plugin: [no-unnecessary-template-expression] ignore enum and enum members (#​10782)
• eslint-plugin: [no-inferrable-types] handle accessor (#​10780)

❤️ Thank You

• Ronen Amiel
• YeonJuan

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

v8.24.0

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🚀 Features

• eslint-plugin: [no-unnecessary-condition] make allowConstantLoopConditions more granular (#​10639)

🩹 Fixes

• eslint-plugin: [no-misused-spread] correct and elaborate string spread report message (#​10751)
• eslint-plugin: [restrict-plus-operands] report adding bigints to strings when allowNumberAndString is false (#​10737)

❤️ Thank You

• Josh Goldberg ✨
• noah
• Ronen Amiel

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

v8.23.0

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🚀 Features

• eslint-plugin: [no-unnecessary-boolean-literal-compare] enforce strictNullChecks (#​10712)

🩹 Fixes

• eslint-plugin: [no-shadow] ignore declare variables in definition files shadowing global variables (#​10710)
• eslint-plugin: [no-restricted-imports] support regex option (#​10699)
• eslint-plugin: [dot-notation] handle noPropertyAccessFromIndexSignature true (#​10644)
• eslint-plugin: [prefer-nullish-coalescing] fix missing return (#​10732)
• bump ts-api-utils to ^2.0.1 (#​10761)
• eslint-plugin: [no-unnecessary-template-expression] allow interpolating type parameter in type context (#​10739)
• eslint-plugin: [switch-exhaustiveness-check] suggest with qualified name (#​10697)
• eslint-plugin: [no-unnecessary-type-assertion] should report readonly class properties with a literal initializer (#​10618)

❤️ Thank You

• Josh Goldberg ✨
• Olivier Zalmanski @​OlivierZal
• Ryan Poon @​sopa301
• YeonJuan @​yeonjuan
• Yukihiro Hasegawa @​y-hsgw

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

v8.22.0

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🩹 Fixes

• eslint-plugin: [no-unnecessary-template-expression] handle template literal type (#​10612)
• eslint-plugin: [prefer-readonly] autofixer doesn't add type to property that is mutated in the constructor (#​10552)
• eslint-plugin: [no-extraneous-class] handle accessor keyword (#​10678)
• eslint-plugin: [no-shadow] don't report unnecessarily on valid ways of using module augmentation (#​10616)
• eslint-plugin: [no-duplicate-type-constituents] handle nested types (#​10638)
• eslint-plugin: [prefer-nullish-coalescing] doesn't report on ternary but on equivalent || (#​10517)

❤️ Thank You

• mdm317
• Olivier Zalmanski @​OlivierZal
• Ronen Amiel
• YeonJuan @​yeonjuan

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

v8.21.0

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🩹 Fixes

• eslint-plugin: [no-duplicate-enum-values] handle template literal (#​10675)
• eslint-plugin: [no-base-to-string] don't crash for recursive array or tuple types (#​10633)
• eslint-plugin: [no-for-in-array] report on any type which may be an array or array-like (#​10535)
• eslint-plugin: check JSX spread elements for misused spread usage (#​10653)
• eslint-plugin: [no-unnecessary-type-arguments] handle type args on jsx (#​10630)

❤️ Thank You

• Ronen Amiel
• YeonJuan @​yeonjuan

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

v8.20.0

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🚀 Features

• eslint-plugin: [consistent-type-assertions] add arrayLiteralTypeAssertions options (#​10565)
• eslint-plugin: [no-deprecated] add allow options (#​10585)
• eslint-plugin: [no-misused-spread] add new rule (#​10551)

🩹 Fixes

• eslint-plugin: [no-unnecessary-condition] don't flag optional chaining for union types with an unconstrained type parameters (#​10602)
• eslint-plugin: [no-shadow] ignore ordering of type declarations (#​10593)

❤️ Thank You

• Josh Goldberg ✨
• Ronen Amiel
• YeonJuan @​yeonjuan

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

v8.19.1

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🩹 Fixes

• eslint-plugin: [no-unnecessary-type-assertion] handle literal types (#​10523)
• eslint-plugin: [no-deprecated] doesn't report on shorthand property in an object expression (#​10550)
• eslint-plugin: [strict-boolean-expressions] remove remaining (unsafe) autofixes (#​10548)
• eslint-plugin: [no-shadow] report correctly on parameters of functions declared with the declare keyword (#​10543)
• eslint-plugin: [no-base-to-string] check array generic type (#​10437)

❤️ Thank You

• Kirk Waiblinger
• mdm317
• Ronen Amiel
• Yukihiro Hasegawa @​y-hsgw

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

v8.19.0

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🚀 Features

• eslint-plugin: [strict-boolean-expressions] check array predicate functions' return statements (#​10106)

🩹 Fixes

• eslint-plugin: [member-ordering] ignore method overloading (#​10536)
• eslint-plugin: [consistent-indexed-object-style] don't report on indirect circular references (#​10537)
• eslint-plugin: [array-type] autofix with conditional types needs parentheses (#​10522)
• eslint-plugin: add getConstraintInfo to handle generic constraints better (#​10496)

❤️ Thank You

• Karl Werner
• Kirk Waiblinger @​kirkwaiblinger
• Ronen Amiel
• YeonJuan @​yeonjuan

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

v8.18.2

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🩹 Fixes

• eslint-plugin: [no-unnecessary-condition] handle noUncheckedIndexedAccess true (#​10514)
• eslint-plugin: [consistent-type-assertions] allow default assertionStyle option (#​10512)
• eslint-plugin: [no-unnecessary-type-arguments] handle type/value context (#​10503)
• eslint-plugin: [no-unsafe-type-assertion] fix for unsafe assertion to a constrained type parameter (#​10461)
• eslint-plugin: [consistent-indexed-object-style] use a suggestion over an auto-fix if can't reliably determine that produced index signature is valid (#​10490)
• eslint-plugin: [no-unnecessary-condition] don't flag values of an unconstrained or valid type parameter (#​10473)
• eslint-plugin: [prefer-reduce-type-parameter] don't report cases in which the fix results in a type error (#​10494)
• eslint-plugin: [no-deprecated] not reporting usages of deprecated declared constants as object value (#​10498)

❤️ Thank You

• Luke Deen Taylor @​controversial
• Ronen Amiel
• Scott O'Hara
• YeonJuan @​yeonjuan
• Yukihiro Hasegawa @​y-hsgw

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

v8.18.1

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🩹 Fixes

• scope-manager: visit params decorator before nest scope (#​10475)
• eslint-plugin: [no-unnecessary-condition] better message when comparing between literal types (#​10454)
• eslint-plugin: use consistent naming for asserting types and casting values (#​10472)
• eslint-plugin: [no-unnecessary-boolean-literal-compare] flag values of a type parameter with boolean type constraints (#​10474)
• eslint-plugin: handle string like index type (#​10460)
• eslint-plugin: [no-unnecessary-template-expression] don't report when an expression includes comment (#​10444)

❤️ Thank You

• Kirk Waiblinger @​kirkwaiblinger
• Ronen Amiel
• YeonJuan @​yeonjuan

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

v8.18.0

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🚀 Features

• eslint-plugin: [switch-exhaustiveness-check] add support for "no default" comment (#​10218)
• eslint-plugin: [no-deprecated] report on super call of deprecated constructor (#​10397)

🩹 Fixes

• eslint-plugin: [use-unknown-in-catch-callback-variable] only flag function literals (#​10436)
• eslint-plugin: [no-base-to-string] handle more robustly when multiple toString() declarations are present for a type (#​10432)
• eslint-plugin: [no-deprecated] check if a JSX attribute is deprecated (#​10374)
• typescript peer dependency (#​10373)

❤️ Thank You

• Kim Sang Du @​developer-bandi
• Kirk Waiblinger @​kirkwaiblinger
• mdm317
• rtritto

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

v8.17.0

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🚀 Features

• eslint-plugin: [prefer-promise-reject-errors] options to allow any and unknown (#​10392)

🩹 Fixes

• eslint-plugin: [promise-function-async] handle function overloading (#​10304)
• eslint-plugin: remove references to "extendDefaults" in no-restricted-types (#​10401)
• eslint-plugin: [no-unnecessary-template-expressions] allow template expressions used to make trailing whitespace visible (#​10363)

❤️ Thank You

• Kim OhSeong @​bkks1004
• Kirk Waiblinger @​kirkwaiblinger
• Maria José Solano @​MariaSolOs
• Ronen Amiel

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

v8.16.0

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🚀 Features

• eslint-plugin: [no-base-to-string] check Array.prototype.join (#​10287)
• eslint-plugin: [max-params] add function overload and function type support (#​10312)

❤️ Thank You

• Kim Sang Du @​developer-bandi
• YeonJuan @​yeonjuan

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

v8.15.0

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🚀 Features

• eslint-plugin: [prefer-nullish-coalescing] fix detection of ignoreConditionalTests involving boolean ! operator (#​10299)
• eslint-plugin: new rule no-unsafe-type-assertion (#​10051)
• eslint-plugin: added related-getter-setter-pairs rule (#​10192)

🩹 Fixes

• utils: add defaultOptions to meta in rule (#​10339)
• eslint-plugin: report deprecations used in default export (#​10330)
• eslint-plugin: [explicit-module-boundary-types] and [explicit-function-return-type] don't report on as const satisfies (#​10315)
• eslint-plugin: [await-thenable, return-await] don't flag awaiting unconstrained type parameter as unnecessary (#​10314)
• eslint-plugin: [consistent-indexed-object-style] handle circular mapped types (#​10301)

❤️ Thank You

• Josh Goldberg ✨
• Kim Sang Du @​developer-bandi
• Luis Sebastian Urrutia Fuentes @​LuisUrrutia
• Phillip Huang
• Ronen Amiel
• Szydlak @​wszydlak

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

v8.14.0

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🚀 Features

• eslint-plugin: [await-thenable] report unnecessary await using statements (#​10209)
• eslint-plugin: [no-confusing-void-expression] add an option to ignore void<->void (#​10067)

🩹 Fixes

• scope-manager: fix asserted increments not being marked as write references (#​10271)
• eslint-plugin: [no-misused-promises] improve report loc for methods (#​10216)
• eslint-plugin: [no-unnecessary-condition] improve error message for literal comparisons (#​10194)

❤️ Thank You

• Gyumong @​Gyumong
• Jan Ochwat @​janek515
• Kirk Waiblinger @​kirkwaiblinger
• Ronen Amiel

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

v8.13.0

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🚀 Features

• eslint-plugin: [only-throw-error] add allow option (#​10221)
• eslint-plugin: [prefer-nullish-coalescing] add option ignoreBooleanCoercion (#​9924)
• eslint-plugin: disable no-class-assign rule in eslint-recommended config (#​10250)

🩹 Fixes

• eslint-plugin: [switch-exhaustiveness-check] add support for covering a missing property with undefined (#​10232)
• eslint-plugin: [consistent-type-definitions] don't leave trailing parens when fixing type to interface (#​10235)
• eslint-plugin: [no-deprecated] report when exported class implements/extends deprecated entity ([#​10259](https://redirect.github.com/

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