[orenelbaum]

It kinda is, but it's more than just JSX. Solid was basically born out of Knockout and is in many ways a continuation of Knockout, but it has some relatively significant changes and additions to make this approach more viable, especially for large long standing projects. JSX is more of a quality of life thing, you don't even have to use it, Solid's runtime exists completely separately of JSX and can work great without it or even potentially be integrated with other templating languages.