Guidance on HTTP-based WebSocket fallbacks in React Native

[trevorarmstrong-ai]

So I'm trying to enable http stream & sse fallbacks for the websocket in our React Native app. When I try to use these transports I get they're not supported, after instrumenting your code I see the reason for http stream reporting as unsupported is that EventTarget, Event, & MessageEvent implementations are missing. I assume sse is in a similar boat.

Any guidance on what I might need to include/polyfill here to get this working? Any examples floating around out there?

[FZambia]

Hello, @trevorarmstrong-ai

That's a not investigated area at this point. I think that in general the approach would be to use polyfills like https://github.com/mysticatea/event-target-shim , https://github.com/mattkrick/event-target-polyfill to bring required types to the global scope. Probably define MessageEvent polyfill manually if there are no polyfills for it.

There is also #201 which seems like a similar issue with ReactNative.

If you manage to make it work - please share how exactly, would be a great help. From my side I can definitely take a look at this at some point - but no concrete instructions for now unfortunately.