yumechi-no-kuni/src/server/api/stream/messaging-index.ts

import * as websocket from 'websocket';
import Xev from 'xev';

export default function(request: websocket.request, connection: websocket.connection, subscriber: Xev, user: any): void {
	// Subscribe messaging index stream
	subscriber.on(`messaging-index-stream:${user._id}`, data => {
		connection.send(JSON.stringify(data));
	});
}