什么类型代表打字稿中的类型？

Question

so given

class Foo {
}

interface TypeProvider() {
    type(): ? ;
}

class Bar implements TypeProvider {
    type(): ? {
        return (Foo);
    }
}

class Baz implements TypeProvider {
    type(): ? {
        return (Bar);
    }
}

Foo is a class but if I'm returning a class from a method, what type do I assign the method signature?

as an aside is return (Foo) and return Foo the same thing? if they're different I'm not certain I don't want the latter.

Answer 1

It should be the Foo constructor:

class Bar {
    type(): { new(): Foo } {
        return (Foo);
    }
}

Or:

interface FooConstructor {
    new(): Foo;
}

class Bar {
    type(): FooConstructor {
        return (Foo);
    }
}