Back out 97036ab72558 which inappropriately compared turds to third parties.
1 // 'this' in escaping generator-expression in a method
2 // is the same as 'this' in the enclosing method
3 // even if the method does not otherwise use 'this'.
7 return (this for (x of [0]));
11 assertEq(obj.f().next(), obj);