feat: add awaitable socket.emit

public/src/sockets.js

@@ -17,6 +17,25 @@ app.isConnected = false;
 
 	socket = io(config.websocketAddress, ioParams);
 
+	var oEmit = socket.emit;
+	socket.emit = function (event, data, callback) {
+		if (typeof data === 'function') {
+			callback = data;
+			data = null;
+		}
+		if (typeof callback === 'function') {
+			oEmit.apply(socket, [event, data, callback]);
+			return;
+		}
+
+		return new Promise(function (resolve, reject) {
+			oEmit.apply(socket, [event, data, function (err, result) {
+				if (err) reject(err);
+				else resolve(result);
+			}]);
+		});
+	};
+
 	if (parseInt(app.user.uid, 10) >= 0) {
 		addHandlers();
 	}