Net.js, SignlarR, Typescript, AngularChat, WebSockets, Awesome

 1. Learn Nest.js

2. Examles: 

Microsoft: SignalR, Typescript, Chat

VS2019 WebCoreSignalR

https://docs.microsoft.com/ru-ru/aspnet/core/tutorials/signalr-typescript-webpack?view=aspnetcore-5.0&tabs=visual-studio

3. AngularChat, WebSocket, Typescript