[Vite + SSR] Is it possible to build to ES instead of CJS?

[gustavotoyota]

I'm trying to use some newer functionality like top-level await on the server.
I managed to build the server to ES doing this:

extendViteConf(viteConf, invokeParams) {
  if (invokeParams.isServer) {
    viteConf.build.rollupOptions.output = { format: 'es' };
  }
},

But the file dist/ssr/index.js is still being built as CJS, so I'm unable to start the server.

Is it possible to build everything into ES code?

[stefanvanherwijnen]

The index.js file seems to be build with esbuild:

quasar/app-vite/lib/modes/ssr/ssr-builder.js

Line 70 in 8f0ccef

async #buildWebserver () {

Not sure if you can change the configuration.

[gustavotoyota]

I managed to build the index.js to ES, but it isn't very compatible with the rest of the code.
It seems like Quasar would need a good rewrite to be able to build to ES code.