💻

• Would you like to work on a fix?

How are you using Babel?

Programmatic API (babel.transform, babel.parse)

Input code

The following two cases

class A extends B<T>
{}
//              ^^^^ ClassDeclaration.superClass
//              ^^^ ClassDeclaration.superClass.typeArguments

class B extends B<T>{}
//              ^    ClassDeclaration.superClass
//              ^^^ ClassDeclaration.superTypeArguments

are parsed differently.

Configuration file name

No response

Configuration

No response

Current and expected behavior

I think they should be the same, I didn't see differences in AST from TypeScript.

Environment

System:
OS: Windows 10 10.0.19045
Binaries:
Node: 24.11.1 - ~\AppData\Local\fnm_multishells\23500_1769001431766\node.EXE
Yarn: 4.12.0 - D:\npm\yarn.CMD
npm: 9.1.2 - ~\AppData\Local\fnm_multishells\23500_1769001431766\npm.CMD
bun: 1.3.5 - ~.bun\bin\bun.EXE
npmPackages:
@babel/code-frame: 8.0.0-beta.4 => 8.0.0-beta.4
@babel/generator: 8.0.0-beta.4 => 8.0.0-beta.4
@babel/parser: 8.0.0-beta.4 => 8.0.0-beta.4
@babel/types: 8.0.0-beta.4 => 8.0.0-beta.4
eslint: 9.39.2 => 9.39.2
jest: 30.2.0 => 30.2.0

Possible solution

No response

Additional context

No response