feat: export event types

[thiagobrez]

Currently when adding an event listener, inline functions work fine:

const ws = new WebSocket(...);

ws.addEventListener('message', (event) => {
  console.log(event.message); // Infers `event.message` ✅
});

But when extracting the function outside (in case we want to remove the listener later, for example), type cannot be inferred. Hence, this PR adds 4 new event types and exports them, to facilitate for the user to type his listeners:

• OpenEvent
• MessageEvent
• ErrorEvent
• CloseEvent

To be used like:

import {
  WebSocket,
  OpenEvent,
  MessageEvent,
  ErrorEvent,
  CloseEvent
 } from 'react-native-fast-ws'

const ws = new WebSocket(...);

function App() {
  useEffect(() => {
    const onOpen = (event: OpenEvent) => {
      console.log('ws connection is open!');
    };

    const onMessage = (event: MessageEvent) => {
      console.log('Message received: ', event.message);
    };

    const onError = (event: ErrorEvent) => {
      console.log('Error: ', event.message);
    };

    const onClose = (event: CloseEvent) => {
      console.log('Code: ', event.code);
      console.log('Reason: ', event.reason);
    };

    ws.addEventListener('open', onOpen);
    ws.addEventListener('message', onMessage);
    ws.addEventListener('error', onError);
    ws.addEventListener('close', onClose);

    return () => {
      ws.removeEventListener('open', onOpen);
      ws.removeEventListener('message', onMessage);
      ws.removeEventListener('error', onError);
      ws.removeEventListener('close', onClose);
    };
  }, []);
}

[grabbou]

Thank you!