feat(typescript-estree): disallow empty type parameter/argument lists #11563
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Codecov Report❌ Patch coverage is
❌ Your patch status has failed because the patch coverage (35.71%) is below the target coverage (90.00%). You can increase the patch coverage or adjust the target coverage. Additional details and impacted files@@ Coverage Diff @@
## main #11563 +/- ##
==========================================
- Coverage 90.90% 90.88% -0.02%
==========================================
Files 505 505
Lines 51121 51130 +9
Branches 8417 8419 +2
==========================================
- Hits 46469 46468 -1
- Misses 4639 4649 +10
Partials 13 13
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Josh-Cena
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Sep 2, 2025
kirkwaiblinger
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Sep 2, 2025
| TSError | ||
| 2 | | ||
| 3 | class foo { | ||
| > 4 | constructor<>() {} |
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This one's weird because it's also illegal to have type parameters on a constructor(); they have to be on the class foo<...>.
Josh-Cena
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Sep 2, 2025
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Just one nit but consider myself happy with this
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@kirkwaiblinger temp testing workflows sorry for the noise |
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@kirkwaiblinger all good |
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| datasource | package | from | to | | ---------- | -------------------------------- | ------ | ------ | | npm | @typescript-eslint/eslint-plugin | 8.42.0 | 8.43.0 | | npm | @typescript-eslint/parser | 8.42.0 | 8.43.0 | ## [v8.43.0](https://github.com/typescript-eslint/typescript-eslint/blob/HEAD/packages/eslint-plugin/CHANGELOG.md#8430-2025-09-08) ##### 🚀 Features - **typescript-estree:** disallow empty type parameter/argument lists ([#11563](typescript-eslint/typescript-eslint#11563)) ##### 🩹 Fixes - **eslint-plugin:** \[prefer-return-this-type] don't report an error when returning a union type that includes a classType ([#11432](typescript-eslint/typescript-eslint#11432)) - **eslint-plugin:** \[no-deprecated] should report deprecated exports and reexports ([#11359](typescript-eslint/typescript-eslint#11359)) - **eslint-plugin:** \[no-floating-promises] allowForKnownSafeCalls now supports function names ([#11423](typescript-eslint/typescript-eslint#11423), [#11430](typescript-eslint/typescript-eslint#11430)) - **eslint-plugin:** \[consistent-type-exports] fix declaration shadowing ([#11457](typescript-eslint/typescript-eslint#11457)) - **eslint-plugin:** \[no-unnecessary-type-conversion] only report \~\~ on integer literal types ([#11517](typescript-eslint/typescript-eslint#11517)) - **scope-manager:** exclude Program from DefinitionBase node types ([#11469](typescript-eslint/typescript-eslint#11469)) - **eslint-plugin:** \[no-non-null-assertion] do not suggest optional chain on LHS of assignment ([#11489](typescript-eslint/typescript-eslint#11489)) - **type-utils:** add union type support to TypeOrValueSpecifier ([#11526](typescript-eslint/typescript-eslint#11526)) ##### ❤️ Thank You - Dima [@dbarabashh](https://github.com/dbarabashh) - Kirk Waiblinger [@kirkwaiblinger](https://github.com/kirkwaiblinger) - mdm317 - tao - Victor Genaev [@mainframev](https://github.com/mainframev) - Yukihiro Hasegawa [@y-hsgw](https://github.com/y-hsgw) - 민감자(Minji Kim) [@mouse0429](https://github.com/mouse0429) - 송재욱 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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PR Checklist
Overview
Also removes a few now-unnecessary tests and logic in some rules