Should transforms operate on "completion value"?

[RangerMauve]

The new for ... of syntax ignores the completion value, so it would make sense to ignore it for the different functions introduced here.

function *example(){
 yield 1;
 yield 2;
 return 3;
}

for(let i of example()) console.log(i);

Outputs

1
2

[leebyron]

Yeah that's very likely correct, completion values should be ignored.