This PR contains the following updates: | Package | Change | [Age](https://docs.renovatebot.com/merge-confidence/) | [Confidence](https://docs.renovatebot.com/merge-confidence/) | |---|---|---|---| | [@typescript-eslint/eslint-plugin](https://typescript-eslint.io/packages/eslint-plugin) ([source](https://redirect.github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/eslint-plugin)) | [`~8.58.0` → `~8.59.0`](https://renovatebot.com/diffs/npm/@typescript-eslint%2feslint-plugin/8.58.2/8.59.1) | ![age](https://developer.mend.io/api/mc/badges/age/npm/@typescript-eslint%2feslint-plugin/8.59.1?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@typescript-eslint%2feslint-plugin/8.58.2/8.59.1?slim=true) | | [@typescript-eslint/parser](https://typescript-eslint.io/packages/parser) ([source](https://redirect.github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/parser)) | [`~8.58.0` → `~8.59.0`](https://renovatebot.com/diffs/npm/@typescript-eslint%2fparser/8.58.2/8.59.1) | ![age](https://developer.mend.io/api/mc/badges/age/npm/@typescript-eslint%2fparser/8.59.1?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@typescript-eslint%2fparser/8.58.2/8.59.1?slim=true) | | [@typescript-eslint/rule-tester](https://typescript-eslint.io/packages/rule-tester) ([source](https://redirect.github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/rule-tester)) | [`~8.58.0` → `~8.59.0`](https://renovatebot.com/diffs/npm/@typescript-eslint%2frule-tester/8.58.2/8.59.1) | ![age](https://developer.mend.io/api/mc/badges/age/npm/@typescript-eslint%2frule-tester/8.59.1?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@typescript-eslint%2frule-tester/8.58.2/8.59.1?slim=true) | | [@typescript-eslint/utils](https://typescript-eslint.io/packages/utils) ([source](https://redirect.github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/utils)) | [`~8.58.0` → `~8.59.0`](https://renovatebot.com/diffs/npm/@typescript-eslint%2futils/8.58.2/8.59.1) | ![age](https://developer.mend.io/api/mc/badges/age/npm/@typescript-eslint%2futils/8.59.1?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/@typescript-eslint%2futils/8.58.2/8.59.1?slim=true) | | [typescript-eslint](https://typescript-eslint.io/packages/typescript-eslint) ([source](https://redirect.github.com/typescript-eslint/typescript-eslint/tree/HEAD/packages/typescript-eslint)) | [`~8.58.0` → `~8.59.0`](https://renovatebot.com/diffs/npm/typescript-eslint/8.58.2/8.59.1) | ![age](https://developer.mend.io/api/mc/badges/age/npm/typescript-eslint/8.59.1?slim=true) | ![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/typescript-eslint/8.58.2/8.59.1?slim=true) | --- > [!WARNING] > Some dependencies could not be looked up. Check the [Dependency Dashboard](../issues/26) for more information. --- ### Release Notes

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

### [`v8.59.1`](https://redirect.github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8591-2026-04-27) [Compare Source](https://redirect.github.com/typescript-eslint/typescript-eslint/compare/v8.59.0...v8.59.1) ##### 🩹 Fixes - **eslint-plugin:** \[no-unnecessary-condition] treat void as nullish in no-unnecessary-condition ([#12241](https://redirect.github.com/typescript-eslint/typescript-eslint/pull/12241)) - **eslint-plugin:** \[no-unnecessary-type-arguments] handle instantiation expressions ([#12220](https://redirect.github.com/typescript-eslint/typescript-eslint/pull/12220)) - **eslint-plugin:** \[no-unnecessary-type-assertion] avoid false positive in logical assignment assertions ([#12278](https://redirect.github.com/typescript-eslint/typescript-eslint/pull/12278)) - **eslint-plugin:** \[no-unnecessary-type-assertion] preserve phantom type arguments in generic inference ([#12269](https://redirect.github.com/typescript-eslint/typescript-eslint/pull/12269)) - **eslint-plugin:** \[no-unnecessary-type-assertion] preserve index signatures in undefined unions ([#12257](https://redirect.github.com/typescript-eslint/typescript-eslint/pull/12257)) - **eslint-plugin:** \[no-unnecessary-type-assertion] fix crash "TypeError: checker.getTypeArguments is not a function" ([#12246](https://redirect.github.com/typescript-eslint/typescript-eslint/pull/12246)) ##### ❤️ Thank You - anasm266 [@anasm266](https://redirect.github.com/anasm266) - Anshika Jain [@Anshikakalpana](https://redirect.github.com/Anshikakalpana) - Ulrich Stark - yugo innami [@nami8824](https://redirect.github.com/nami8824) See [GitHub Releases](https://redirect.github.com/typescript-eslint/typescript-eslint/releases/tag/v8.59.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ### [`v8.59.0`](https://redirect.github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8590-2026-04-20) [Compare Source](https://redirect.github.com/typescript-eslint/typescript-eslint/compare/v8.58.2...v8.59.0) ##### 🚀 Features - **eslint-plugin:** \[no-unnecessary-type-assertion] report more cases based on assignability ([#11789](https://redirect.github.com/typescript-eslint/typescript-eslint/pull/11789)) ##### ❤️ Thank You - Ulrich Stark See [GitHub Releases](https://redirect.github.com/typescript-eslint/typescript-eslint/releases/tag/v8.59.0) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

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

### [`v8.59.1`](https://redirect.github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/parser/CHANGELOG.md#8591-2026-04-27) [Compare Source](https://redirect.github.com/typescript-eslint/typescript-eslint/compare/v8.59.0...v8.59.1) This was a version bump only for parser to align it with other projects, there were no code changes. See [GitHub Releases](https://redirect.github.com/typescript-eslint/typescript-eslint/releases/tag/v8.59.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ### [`v8.59.0`](https://redirect.github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/parser/CHANGELOG.md#8590-2026-04-20) [Compare Source](https://redirect.github.com/typescript-eslint/typescript-eslint/compare/v8.58.2...v8.59.0) This was a version bump only for parser to align it with other projects, there were no code changes. See [GitHub Releases](https://redirect.github.com/typescript-eslint/typescript-eslint/releases/tag/v8.59.0) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

typescript-eslint/typescript-eslint (@typescript-eslint/rule-tester)

### [`v8.59.1`](https://redirect.github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/rule-tester/CHANGELOG.md#8591-2026-04-27) [Compare Source](https://redirect.github.com/typescript-eslint/typescript-eslint/compare/v8.59.0...v8.59.1) This was a version bump only for rule-tester to align it with other projects, there were no code changes. See [GitHub Releases](https://redirect.github.com/typescript-eslint/typescript-eslint/releases/tag/v8.59.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ### [`v8.59.0`](https://redirect.github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/rule-tester/CHANGELOG.md#8590-2026-04-20) [Compare Source](https://redirect.github.com/typescript-eslint/typescript-eslint/compare/v8.58.2...v8.59.0) ##### 🚀 Features - **eslint-plugin:** \[no-unnecessary-type-assertion] report more cases based on assignability ([#11789](https://redirect.github.com/typescript-eslint/typescript-eslint/pull/11789)) ##### ❤️ Thank You - Ulrich Stark See [GitHub Releases](https://redirect.github.com/typescript-eslint/typescript-eslint/releases/tag/v8.59.0) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

typescript-eslint/typescript-eslint (@typescript-eslint/utils)

### [`v8.59.1`](https://redirect.github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/utils/CHANGELOG.md#8591-2026-04-27) [Compare Source](https://redirect.github.com/typescript-eslint/typescript-eslint/compare/v8.59.0...v8.59.1) This was a version bump only for utils to align it with other projects, there were no code changes. See [GitHub Releases](https://redirect.github.com/typescript-eslint/typescript-eslint/releases/tag/v8.59.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ### [`v8.59.0`](https://redirect.github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/utils/CHANGELOG.md#8590-2026-04-20) [Compare Source](https://redirect.github.com/typescript-eslint/typescript-eslint/compare/v8.58.2...v8.59.0) ##### 🚀 Features - **eslint-plugin:** \[no-unnecessary-type-assertion] report more cases based on assignability ([#11789](https://redirect.github.com/typescript-eslint/typescript-eslint/pull/11789)) ##### ❤️ Thank You - Ulrich Stark See [GitHub Releases](https://redirect.github.com/typescript-eslint/typescript-eslint/releases/tag/v8.59.0) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

typescript-eslint/typescript-eslint (typescript-eslint)

### [`v8.59.1`](https://redirect.github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/typescript-eslint/CHANGELOG.md#8591-2026-04-27) [Compare Source](https://redirect.github.com/typescript-eslint/typescript-eslint/compare/v8.59.0...v8.59.1) This was a version bump only for typescript-eslint to align it with other projects, there were no code changes. See [GitHub Releases](https://redirect.github.com/typescript-eslint/typescript-eslint/releases/tag/v8.59.1) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website. ### [`v8.59.0`](https://redirect.github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/typescript-eslint/CHANGELOG.md#8590-2026-04-20) [Compare Source](https://redirect.github.com/typescript-eslint/typescript-eslint/compare/v8.58.2...v8.59.0) This was a version bump only for typescript-eslint to align it with other projects, there were no code changes. See [GitHub Releases](https://redirect.github.com/typescript-eslint/typescript-eslint/releases/tag/v8.59.0) for more information. You can read about our [versioning strategy](https://typescript-eslint.io/users/versioning) and [releases](https://typescript-eslint.io/users/releases) on our website.

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