See my other comment [0], it seems only JS based ones use stuff like composition of content while most others are template-based, which is not as powerful. [0]

See my other comment [0], it seems only JS based ones use stuff like composition of content while most others are template-based, which is not as powerful. [0] https://news.ycombinator.com/item?id=26358978 https://news.ycombinator.com/item?id=26358978