Same basic issue as with #521 **Code** ```ts map(result.success ? (a) : 1).map(c => c.name) const a = 1; ``` <img width="375" alt="screen shot 2017-09-27 at 4 55 18 pm" src="https://user-images.githubusercontent.com/12821956/30943250-a960565a-a3a4-11e7-8273-e1fd0bc73231.png">