@66beta 我觉得这里的一段评价还是比较中肯的： >Don't use that. It has very little future,its creator couldn't care less about it anymore and even worst some of its syntax conflicts with ES6. It's not going to die since the ruby crowd loves it, however it has become totally irrelevant. Be also aware that the maintenance has slowed down a lot , if you look at the commits most of them are cosmetic just to give the illusion of CS being still maintained ( "removed space here", "changed date there" ,... I'm not kidding ).