=== tests/cases/compiler/defaultIndexProps1.ts ===
class Foo {
>Foo : Foo

	public v = "Yo";
>v : string
}

var f = new Foo();
>f : Foo
>new Foo() : Foo
>Foo : typeof Foo

var q = f["v"];
>q : string
>f["v"] : string
>f : Foo

var o = {v:"Yo2"};
>o : { v: string; }
>{v:"Yo2"} : { v: string; }
>v : string

var q2 = o["v"];
>q2 : string
>o["v"] : string
>o : { v: string; }