Update eslint

[renovate]

This PR contains the following updates:

Package	Change	Age	Confidence
@typescript-eslint/eslint-plugin (source)	8.50.1 → 8.54.0
@typescript-eslint/parser (source)	8.50.1 → 8.54.0
eslint-config-next (source)	16.1.1 → 16.1.6
eslint-plugin-prettier	5.5.4 → 5.5.5

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Release Notes

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

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

Compare Source

🚀 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.

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

v8.54.0

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

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

v8.53.1

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

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

v8.53.0

Compare Source

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

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

v8.52.0

Compare Source

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

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

v8.51.0

Compare Source

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

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

vercel/next.js (eslint-config-next)

v16.1.6

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v16.1.5

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v16.1.4

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v16.1.3

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v16.1.2

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[!NOTE]
This release is backporting bug fixes. It does not include all pending features/changes on canary.

Core Changes

• Turbopack: Update to swc_core v50.2.3 (#​87841) (#​88296)
  • Fixes a crash when processing mdx files with multibyte characters. (#​87713)
• Turbopack: mimalloc upgrade and enabling it on musl (#​88503) (#​87815) (#​88426)
  • Fixes a significant performance issue on musl-based Linux distributions (e.g. Alpine in Docker) related to musl's allocator.
  • Other platforms have always used mimalloc, but we previously did not use mimalloc on musl because of compilation issues that have since been resolved.

Credits

Huge thanks to @​mischnic for helping!

prettier/eslint-plugin-prettier (eslint-plugin-prettier)

v5.5.5

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Patch Changes

• #​772 7264ed0 Thanks @​BPScott! - Bump prettier-linter-helpers dependency to v1.0.1

• #​776 77651a3 Thanks @​aswils! - fix: bump synckit for yarn PnP ESM issue

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Project	Deployment	Review	Updated (UTC)
codecoolture	Ready	Preview, Comment	Jan 27, 2026 10:40pm