Yes, I know about Esprima. But I think it would be perfect library to create some more high level tool. Pure Esprima is pretty low-level (and JavaScript ASTs ar

Yes, I know about Esprima. But I think it would be perfect library to create some more high level tool. Pure Esprima is pretty low-level (and JavaScript ASTs are pretty complex to traverse). Angular 1.* for me was just an experiment full of accidental complexity and I am glad that Angular 2 will be more simpler. If we talk about HTML/CSS I think that we need two different kind of tools (possibly integrated): - structural editor of HTML/CSS that would be operate on tree nodes rather than text (my previous answer: https://news.ycombinator.com/item?id=9952022 https://news.ycombinator.com/item?id=9952022 ). That would allow editor to be smarter. - WYSIWYG in browser (realised for example via plugin extension or browser itself) as a method for tweaking end results. I think about something like that: https://twitter.com/malyw/status/615974892928954368 https://twitter.com/malyw/status/615974892928954368