I haven’t been able to find a better solution after hours of trying.
The Super expression issue comes from EventStream being undefined, which can be resolved with npm i events
This solves the issue for the dev vite server, but for the production build, another issue happens.
It seems that the JS SDK is compiled with babel/preset-env, babel-runtime, and browsify which creates {__esModule: true, default: ...} for each export. It seems that rollup on production then packages that up again, and decode2.default is not a function is thrown.
If anyone has any idea how to create a better solution than this solution, please let me know