Val Town supports server-rendered JSX. This lets you use JSX syntax to construct
your HTML string. It does not include any client-side JSX framework features,
such a re-rendering on the client.
To use JSX, you’ll need to insert what TypeScript calls a
”per-file pragma” - a
comment that uses @jsxImportSource to specify where the JSX methods are going
to come from. For example, if you’re implementing JSX with Preact, the pragma
will look like this at the top of your val:
A good default is Preact, which provides a
nice preact-render-to-string module that lets you quickly turn that JSX object
into a string that you can use for a response.