Nice! I like how it can double as a static site generator, so you can replace Hugo/Jekyll with this. That might need some glue code/extensions to the language though.
That's what I did for my website. Combined with goldmark for writing my pages in markdown, I really like it.
It did require a fair amount of code though.
My problem with Hugo is how the templating becomes very confusing and the flow convoluted. The projects required places for various things becomes a maze, especially if you are not familiar with the site and theme you are working on.
I definitely prefer JSX to Hugo, but this project might be a nice middle ground.