[1337shadow]

Unless you're trying to make a really rich SPA, it could be something of: unpoly, htmx.org, barbajs, knockoutjs, turbolinks/stimulusjs... Anything that lets you enjoy server side rendering, whatever your framework autogenerates for you (ie. forms) is better to "just have" than "have to implement", instead of having 2 projects (one API, one frontend), or even no frontend framework at all (ie. mvp.css and plain HTML), you can do a whole lot of relevant projects with that already.

Webcomponents in plain JS are also great to not have to deal with JS class/HTML Element binding and lifecycle yourself.

Why not add a bit of Flutter or React for a few features, but for most pages it's going to be an expensive overkill.