Credit where credit is due: love Pawel's work, heavily borrowed from his `signalr-no-jquery' (infact an exact fork). I just needed a faster turnaround to the issues

jQuery shim borrowed from react-native-signalR

This version of signalR client doesn't add jQuery to window object but imports jQueryShim locally to signalR and exports hubConnection. jQueryShim file contains only bare-minimum of jQuery to make signalR client run.

This package is not meant to be used with ASP.NET Core version of SignalR

npm i --save-dev signalr-shimmy

import { hubConnection } from 'signalr-shimmy'

Use just like regular signalR but without $ namespace

const connection = hubConnection('http://[address]:[port]', options)
const hubProxy = connection.createHubProxy('hubNameString')

// set up event listeners i.e. for incoming "message" event
hubProxy.on('message', function(message) {
    console.log(message)
});

// connect
connection.start({ jsonp: true })
.done(function(){ console.log('Now connected, connection ID=' + connection.id); })
.fail(function(){ console.log('Could not connect'); })

Feel free to create pull requests and raise issues https://github.com/praveensewak/signalr-shimmy/issues