scalajs-snowpack-example VS scala-webapp-template

As for bundler: you don't have to use scalajs-bundler, since this is just an sbt plugin that can read JS configs from sbt and pass them to webpack. It is also quite old and buggy. Scala.js commands such as fastLinkJS or fullLinkJS produce plain old JS, so it's possible to use any existing bundler out there to bundle your SJS code with your JS dependencies. I had no clue about JS ecosystem when I was fiddling arounf with SJS, so I found the template that provides minimal setup for SJS + snowpack: https://github.com/lolgab/scalajs-snowpack-example.

I'm also working on improving our template to provide a better developer experience (https://github.com/wiringbits/scala-webapp-template/issues/307).

Ticket: https://github.com/wiringbits/scala-webapp-template/issues/294

After thinking for a bit, I got to the conclusion that Vercel's preview environments are not really hard to implement. Then, I put my hands into this and created an integration for one of our projects: https://github.com/wiringbits/scala-webapp-template/pull/299

You can also check out our template which uses Scala.js + Slinky + Mui.

https://github.com/wiringbits/scala-webapp-template does something very similar with akka-stream but it is tied to send emails on the background, it seems that we can easily extend it to support arbitrary jobs (https://github.com/wiringbits/scala-webapp-template/issues/294). What is not so simple to do with such a schema is to distribute the jobs in many servers.

Given this, I wonder if you have ever worked with Ansible, if so, you could pick these playbooks to deploy to a ubuntu server, these playbooks are pretty generic for Scala apps, you will need to update the build/run script, everything else is already handled (like uploading the app to a server, creating users, registering a systemd service, etc).

Take a look at https://github.com/wiringbits/scala-webapp-template and https://github.com/playframework/play-samples

Years ago, I wrote some ansible scripts so that ansible-playbook -i test-hosts.ini server.yml is enough to deploy the app (sample).

Given that you aren't familiar with Scala, I'd suggest looking into Play Framework, if you want to start fast and play with a project, check this template, your js background could help you to update the frontend relatively quick.

I'd suggest to check this template which already has an skeleton for a CRUD app, including deployment scripts that can mount an environment in ubuntu servers.