=== tests/cases/compiler/mutuallyRecursiveGenericBaseTypes2.ts ===
class foo<T>
>foo : foo<T>
>T : T
{
    bar(): foo2<T[]> { return null; }
>bar : () => foo2<T[]>
>foo2 : foo2<T>
>T : T
>null : null
}
 
class foo2<T> extends foo<T> {
>foo2 : foo2<T>
>T : T
>foo : foo<T>
>T : T
}
 
var test = new foo<string>();
>test : foo<string>
>new foo<string>() : foo<string>
>foo : typeof foo