Nested "Enums" in TypeScript

nestenum.ts

enum Foo {
    A = "ActivityCode.Foo.A",
    B = "ActivityCode.Foo.B",
    C = "ActivityCode.Foo.C",
}

enum Bar {
    A = "ActivityCode.Bar.A",
    B = "ActivityCode.Bar.B",
    C = "ActivityCode.Bar.C",
}

enum Baz {
    A = "ActivityCode.Baz.A",
    B = "ActivityCode.Baz.B",
    C = "ActivityCode.Baz.C",
}

const ActivityCode = {
    Foo,
    Bar,
    Baz,
};

console.log(ActivityCode.Foo.A);