Please Allow Mixins to function properly with new-able types

Bug Report

If we declare a new-able type, that is a mixin with the generic parameter it uses, the whole type is not processed.
For example, doing this, won't work

// In types.d.ts
namespace test.ts.bug{
    var MyType: {
        new <T>(): T & {
            additional: "somevalue"
        };
    }
}

// Then, in VS code, we make use of the type as such
/** @extends {test.ts.bug.MyType<{tsc: "cool"|"sweet"}>} */
class SomeClass extends Object{
}
const myVar = new SomeClass()

Suppose you try to use myVar, you won't see the any of the properties corrected listed, and auto-completed.

However, if you declared it like this

// In types.d.ts
namespace test.ts.working{
    var MyType: {
        new <T>():  {
            additional: "somevalue";
            main: T
        };
    }
}

And obviously, did the following in js

// Then, in VS code, we make use of the type as such
/** @extends {test.ts.working.MyType<{tsc: "cool"|"sweet"}>} */
class SomeClass extends Object{
}
const myVar = new SomeClass()

then with const myVar = new SomeClass(), the properties additional, and main.tsc are auto-completed very well.

🔎 Search Terms

mixins new-able newable types

🕗 Version & Regression Information

Same version with vs code

⏯ Playground Link

Playground link with relevant code

🙁 Actual behavior

const myVar = new SomeClass() doesn't auto-complete in VS code

🙂 Expected behavior

const myVar = new SomeClass() is supposed to have the tsc, and additional set to true

Öffne den verlinkten TypeScript Playground und reproduziere den Unterschied zwischen den nicht funktionierenden und den funktionierenden Deklarationen in types.d.ts. Verfolge zunächst, wie der JSDoc-Ausdruck @extends eine generische Konstruktorsignatur verwendet, und überprüfe anschließend, dass new SomeClass() wie erwartet tsc und additional über die Autovervollständigung bereitstellt.