=== tests/cases/conformance/es6/for-ofStatements/for-of20.ts ===
for (let v of new FooIterator) {
>v : Symbol(v, Decl(for-of20.ts, 0, 8))
>FooIterator : Symbol(FooIterator, Decl(for-of20.ts, 4, 13))

    v;
>v : Symbol(v, Decl(for-of20.ts, 0, 8))
}

class Foo { }
>Foo : Symbol(Foo, Decl(for-of20.ts, 2, 1))

class FooIterator {
>FooIterator : Symbol(FooIterator, Decl(for-of20.ts, 4, 13))

    next() {
>next : Symbol(next, Decl(for-of20.ts, 5, 19))

        return {
            value: new Foo,
>value : Symbol(value, Decl(for-of20.ts, 7, 16))
>Foo : Symbol(Foo, Decl(for-of20.ts, 2, 1))

            done: false
>done : Symbol(done, Decl(for-of20.ts, 8, 27))

        };
    }
    [Symbol.iterator]() {
>Symbol.iterator : Symbol(SymbolConstructor.iterator, Decl(lib.d.ts, 1236, 31))
>Symbol : Symbol(Symbol, Decl(lib.d.ts, 1186, 52), Decl(lib.d.ts, 1292, 11))
>iterator : Symbol(SymbolConstructor.iterator, Decl(lib.d.ts, 1236, 31))

        return this;
>this : Symbol(FooIterator, Decl(for-of20.ts, 4, 13))
    }
}