I suggest exposing a config variable in the js client to set the hostname of the Postgres server. This way you can provide a self hosted version of the backend,

I suggest exposing a config variable in the js client to set the hostname of the Postgres server. This way you can provide a self hosted version of the backend, and customers can self host it either locally on their machine, or within an internal network. Same benefits of the browser, just need to change config.