Very slow or Infinite loop in Chain Expression #672

class EventCenter {
    On(str: string): EventCenter {
        return this;
    }
}

let center = new EventCenter();

center.On("event1")
    .On("event2")
    .On("event3")
    .On("event4")
    .On("event5")
    .On("event6")
    .On("event7")
    .On("event8")
    .On("event9")
    .On("event10")
    .On("event11")
    .On("event12")
    .On("event13")
    .On("event14")