JS is missing switch/match expressions, that's pretty much all IMO. And I commend the maintainers of JSX for refusing to extend its syntax. JSX can be learned

JS is missing switch/match expressions, that's pretty much all IMO. And I commend the maintainers of JSX for refusing to extend its syntax. JSX can be learned in 15 minutes and it is a macro usually used to wrap React.createElement. You could just as well swap your bundler plugin and use some other type of macro, e.g. sth like Mithril's m. JSX is a very slim basic concept and I don't know a single gotcha except for the renamed attributes/props that are otherwise reserved keywords (htmlFor, className). That you can use/see it as a templating language is just a part of its appeal. I loathe having to use dedicated templating languages, having worked with Mustache and various PHP templating languages such as Blade and Twig. Maybe "loathe" is a strong wors because most of the time it's easy and just works. But when it doesn't, debugging is a nightmare. Escaping rules and questions like "what is code, what is a just an uninterpreted string" become unpredictable, and you have to learn useless baggage for each of them. Same goes for all the JS DSLs using HTML attributes (Vue 2 "templates", which are actually not templates, etc). This is also what turns me off about htmx. It'a great to throw together a specialized solution for one problem, but not great for libraries inventing unnecessary proprietary languages.