Nonsensical error when creating a mixin with a type parameter

[STRd6]

🔎 Search Terms

"mixin type parameter"

🕗 Version & Regression Information

At least since v3.3.3

⏯ Playground Link

No response

💻 Code

type Constructor<T = {}> = new (
  ...args: any[]
) => T;

export const Undo = <Base extends Constructor>(
  S: Base,
) => {
  abstract class C<T> extends S {
    constructor(...args: any[]) {
      super(...args)
    }
    abstract f(x: T): T
  }

  return C;
};

🙁 Actual behavior

A mixin class must have a constructor with a single rest parameter of type 'any[]'.(2545)
class C<T>

🙂 Expected behavior

An error message explaining that mixins can't have type parameters since it already has a constructor function with a rest parameter of type any[].

Additional information about the issue

No response

[jcalz]

duplicate #37142

[typescript-bot]

This issue has been marked as "Duplicate" and has seen no recent activity. It has been automatically closed for house-keeping purposes.