Where I can found the SignalR core polyfills for Node

Question

In the SignalR npm package says, that in order to use from Node we should include some polyfills

The following polyfills are required to use the client in Node.js applications:

XmlHttpRequest - always

WebSockets - to use the WebSockets transport

EventSource - to use the ServerSentEvents transport

btoa/atob - to use binary protocols (e.g. MessagePack) over text transports (ServerSentEvents)

And the question is, have anybody a link to those polyfills?

Answer 1

For future references:

The answer seems to be here