Yup, Js can't be avoided. I was just doing a desktop app in golang.. and the best way to have cross platform ui? Webview. I tried all the frameworks in go and nothing comes close. I could choose another language to write my business logic in and not go but still, it probably ends up using a webview for the UI.

Its not even heavy anymore because its just the OS native webview, unlike electron, it doesn't bundle a browser so the base app is just 3.3MB, while if I use GPU to render the Ui the app I ship starts at 60MB