Hey. What is this

Hello internet.

This is a proof of concept of using flutter_rust_bridge to make a Flutter app that uses automerge (specifically, autosurgeon).

https://cjycode.com/flutter_rust_bridge/

https://github.com/automerge/autosurgeon

It uses a websocket (wsserver) server to relay messages between clients. Every client joining resets all the others.

It works on web and iOS simulator, on my machine. Subtle details of XCode project set up matter. Machine configuration, such as globally-installed rustup toolchains and targets, also matter.

The rust module is called radd. That's short for "rust add" because the first thing I did was make a function for doing 2+2 in rust. The flutter project is called "flutters".

The flutter_rust_bridge_codegen includes a misleading bit for a macos header, but macos support isn't actually set up.

On rust changes

cd flutters
flutter_rust_bridge_codegen --rust-input radd/src/api.rs --dart-output lib/bridge_generated.dart --c-output ios/Runner/bridge_generated.h --extra-c-output-path macos/Runner --dart-decl-output lib/bridge_definitions.dart --wasm

Websocket server (wsserver):

cd wsserver
dart pub get
dart run

Flutter with rust (flutters):

Web / WASM:

cd flutters
flutter pub get
dart run flutter_rust_bridge:serve --crate radd

iOS

Just use Flutter's Debug in iOS simulator