TypeScript and field initializers

How to init a new class in TS in such a way (example in C# to show what I want):

// ... some code before
return new MyClass { Field1 = "ASD", Field2 = "QWE" };
// ...  some code after

Update

Since writing this answer, better ways have come up. Please see the other answers below that have more votes and a better answer. I cannot remove this answer since it's marked as accepted.

Old answer

There is an issue on the TypeScript codeplex that describes this: Support for object initializers.

As stated, you can already do this by using interfaces in TypeScript instead of classes:

interface Name {
    givenName: string;
    surname: string;
}
class Person {
    name: Name;
    age: number;
}

var bob: Person = {
    name: {
        givenName: "Bob",
        surname: "Smith",
    },
    age: 35,
};

Stack Overflow Q#14142071, score: 119