Is SignalR possible without jQuery?
SignalR has a dependency on JQuery therefore it is required that you use it.
However, there is an issue filed on the SignalR source GitHub page to re-write the JS client without the JQuery dependency.
I made this based on react-native-signalr but without adding jQuery to window objecthttps://github.com/DVLP/signalr-no-jquery
It's possible to use TypeScript or Javascript client, but you have to use new version SignalR Core.