Refactor: Fix Event Buffer Deadlock with State Machine (#1633)

* feat: implement state machine for chat synchronization and buffer management

* test: Add Jest configuration and tests for connection deadlock handling

- Created a Jest configuration file to set up testing environment.
- Implemented utility functions for creating isolated authentication sessions and mocking WebSocket connections.
- Added a test case to ensure that the connection does not deadlock when history sync is disabled, verifying the correct handling of message events.

* feat: add GitHub Actions workflow for running tests

* chore: sort import lint

* fix: implement timeout handling for AwaitingInitialSync state in chat socket, maybe fix memory leak

* feat: enhance chat synchronization by refining AwaitingInitialSync handling and adding history sync checks

src/Socket/index.ts

@@ -3,10 +3,19 @@ import type { UserFacingSocketConfig } from '../Types'
 import { makeCommunitiesSocket } from './communities'
 
 // export the last socket layer
-const makeWASocket = (config: UserFacingSocketConfig) =>
-	makeCommunitiesSocket({
+const makeWASocket = (config: UserFacingSocketConfig) => {
+	const newConfig = {
 		...DEFAULT_CONNECTION_CONFIG,
 		...config
-	})
+	}
+
+	// If the user hasn't provided their own history sync function,
+	// let's create a default one that respects the syncFullHistory flag.
+	if (config.shouldSyncHistoryMessage === undefined) {
+		newConfig.shouldSyncHistoryMessage = () => !!newConfig.syncFullHistory
+	}
+
+	return makeCommunitiesSocket(newConfig)
+}
 
 export default makeWASocket