[jasim]

In support of this argument -

The HTML snippet embedded in `let titleView = "<h1>Hello</h1>"` can only be parsed as a string. This means no tooling support - no linting, no tags that autoclose, no code formatting. But if you have a distinct syntax for XML, the parser can clearly figure out what the strings are, and what the tags are.

First class support for XML is, after using JSX, just so obvious in hindsight if you're building anything to do with the web.

[Cyph0n]

Scala introduced first-class support for XML through a DSL a decade ago. I believe the feature has been phased out because it was useless. I've personally never found it useful either.