Yes, we're using Vue 3 and composition-style components over at https://radiopaper.com. My only gripe is that Vue's standard templates can't be typed as thoroughly as JSX can (IME - after mixed experiences with Vetur/VTI[1]), but we've been gradually migrating everything to TSX via render functions[2] and finding it perfectly capable. Added bonus is an ease of composition of template code – small local-use components can easily be split out within the same file for readability, in contrast with Vue SFC's. Vue even has true "function components" now! [3] (nice to have in really minimal cases)

[1] https://vuejs.github.io/vetur/guide/vti.html [2] https://vuejs.org/guide/extras/render-function.html [3] https://vuejs.org/guide/extras/render-function.html#function...