Summary

We've completed our chat application. We started this chapter by programming the actions of the title bar. On the way, we learned how to control application window state in Electron. We looked into the WebSockets technology on the example of simple echo server and the accompanying client. Going deeper, we designed chat services based on WebSockets. We bound client events to the component states. We were introduced to the Jest testing framework and examined a generic approach to unit-testing React components. Besides, we created regression tests for both stateless and stateful components. We packaged our application and built an installer. We fiddled with publishing releases and made the application update whenever a new release is available.