Alternatives in web [closed]

Websites use 3 primary components in the front-end i.e. HTML, CSS, and JS at the most basic levels. Although we do have alternatives for all three -

HTML - Markdowns(of several different complexities), templating engines, LaTeX

CSS - Sass, Stylus, LessCSS

JS - typescript, Transcrypt, Purescript

and many more for each... But in the end, everything gets compiled, interpreted, or bundled as HTML, CSS, and JS. So in a foreseeable future is this pattern going to change? Will any browser inherently support any other language for the task these 3 languages are performing? Maybe like a language that performs 2 tasks or the entire 3 altogether.