Sourced from typescript-eslint's releases.

v8.59.1

8.59.1 (2026-04-27)

🩹 Fixes

• eslint-plugin: [no-unnecessary-type-assertion] fix crash "TypeError: checker.getTypeArguments is not a function" (#12246)
• eslint-plugin: [no-unnecessary-type-assertion] preserve index signatures in undefined unions (#12257)
• eslint-plugin: [no-unnecessary-type-assertion] preserve phantom type arguments in generic inference (#12269)
• eslint-plugin: [no-unnecessary-type-assertion] avoid false positive in logical assignment assertions (#12278)
• eslint-plugin: [no-unnecessary-type-arguments] handle instantiation expressions (#12220)
• eslint-plugin: [no-unnecessary-condition] treat void as nullish in no-unnecessary-condition (#12241)

❤️ Thank You

• anasm266 @​anasm266
• Anshika Jain @​Anshikakalpana
• Ulrich Stark
• yugo innami @​nami8824

See GitHub Releases for more information.

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

Sourced from typescript-eslint's changelog.

8.59.1 (2026-04-27)

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

See GitHub Releases for more information.

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

• 5245793 chore(release): publish 8.59.1
• See full diff in compare view

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