Repro

{
  "rules": {
    "@typescript-eslint/no-unnecessary-type-arguments": ["error"]
  }
}

class FooEvent extends CustomEvent<any> {
}

Expected Result

to pass linting.

Actual Result

Fails linting, because the type CustomEvent<T> has a default type any for the generic T, and thus it wants just CustomEvent.

The problem is that CustomEvent is defined as a global variable, thus the meaning of extends CustomEvent is different than extends CustomEvent<any>.

Additional Info

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