Android
Host Service lets the host application register named native functions that journey JavaScript can call with await HostService.invokeFunction(name, args, callbacks). It also provides host-side utilities such as the image picker.
iOS
Host Service lets the host application register named native functions that journey JavaScript can call with await HostService.invokeFunction(name, args, callbacks). It also provides host-side utilities such as the image picker.
Flutter
Host Service lets the host application register named Dart functions that journey JavaScript can call with await HostService.invokeFunction(name, args, callbacks).