converted message polling to websockets

backend/app/__init__.py

@@ -1,6 +1,7 @@
 from flask import Flask
 from flask_cors import CORS
 from flask_jwt_extended import JWTManager
+from flask_socketio import SocketIO
 from dotenv import load_dotenv
 import os
 import tempfile
@@ -85,6 +86,26 @@ def create_app():
     CORS(app, resources={r"/api/*": {"origins": "*"}})
     jwt = JWTManager(app)
     
+    # Initialize SocketIO using singleton pattern (GPT-5 fix for AI mode WebSocket issues)
+    from .extensions import socketio
+    socketio.init_app(app)  # Bind the singleton SocketIO instance to this Flask app
+    
+    # Store socketio reference on app for backward compatibility
+    app.socketio = socketio
+    
+    # Initialize WebSocket manager with singleton SocketIO
+    from app.websocket_manager import init_websocket_manager
+    websocket_manager = init_websocket_manager()  # No parameter needed - uses singleton
+    
+    # Debug tap removed - using simpler GPT-5 diagnostic logging instead
+    
+    # Debug: Track main process ID for cross-process debugging
+    import threading
+    main_process_id = os.getpid()
+    main_thread_id = threading.get_ident()
+    print(f"🔌 PROCESS DEBUG - Flask app initialized with WebSocket manager")
+    print(f"🔌 PROCESS DEBUG - Main Flask PID: {main_process_id}, Thread: {main_thread_id}")
+    
     # Register blueprints
     from app.routes.auth import auth_bp
     from app.routes.personas import personas_bp
@@ -105,4 +126,7 @@ def create_app():
     def health_check():
         return {'status': 'ok', 'message': 'Backend is running'}, 200
     
+    # Store socketio reference on app for access in routes
+    app.socketio = socketio
+    
     return app

backend/app/extensions.py

@@ -0,0 +1,20 @@
+"""
+Flask Extensions Module
+Provides singleton instances of Flask extensions to ensure consistency across the application.
+This fixes the WebSocket AI mode issue by ensuring all parts of the app use the same SocketIO instance.
+"""
+
+from flask_socketio import SocketIO
+
+# Create the SINGLE SocketIO instance that will be used throughout the application
+# This is the singleton pattern recommended by GPT-5 to fix AI mode WebSocket issues
+socketio = SocketIO(
+    cors_allowed_origins="*",
+    async_mode="eventlet", 
+    ping_timeout=120,    # 2 minutes timeout for ping response
+    ping_interval=45,    # Send ping every 45 seconds
+    logger=True,         # Enable debugging while fixing the issue
+    engineio_logger=True # Enable debugging while fixing the issue
+)
+
+# Note: The app will be bound to this instance using socketio.init_app(app) in create_app()

backend/app/models/focus_group.py

@@ -4,6 +4,64 @@ from datetime import datetime
 import traceback
 import uuid
 import os
+import threading
+import eventlet
+
+def emit_websocket_event(event_name: str, focus_group_id: str, data: dict):
+    """Helper function to emit WebSocket events using queue-based emitter (GPT-5 fix)."""
+    from app.websocket_manager import emit_websocket_event as queue_emit
+    
+    process_id = os.getpid()
+    thread_id = threading.get_ident()
+    print(f"🔔 PROCESS DEBUG - emit_websocket_event called: {event_name} for focus group {focus_group_id}")
+    print(f"🔔 PROCESS DEBUG - AI/Event PID: {process_id}, Thread: {thread_id}")
+    
+    try:
+        # GPT-5 fix: Use the queue-based emitter to prevent greenlet/threading issues
+        if event_name == 'message_update':
+            event_data = {
+                'focus_group_id': focus_group_id,
+                'timestamp': datetime.utcnow().isoformat(),
+                'message': data
+            }
+        elif event_name == 'ai_status_update':
+            event_data = {
+                'focus_group_id': focus_group_id,
+                'timestamp': datetime.utcnow().isoformat(),
+                'status': data
+            }
+        else:
+            # Generic event format
+            event_data = {
+                'focus_group_id': focus_group_id,
+                'timestamp': datetime.utcnow().isoformat(),
+                **data
+            }
+        
+        # Emit to the specific focus group room using the queue-based system
+        queue_emit(event_name, event_data, focus_group_id)
+        print(f"🔔 Successfully queued {event_name} for focus group {focus_group_id}")
+            
+    except Exception as e:
+        print(f"🔔 ERROR emitting WebSocket event {event_name}: {e}")
+        import traceback
+        print(f"🔔 Full traceback: {traceback.format_exc()}")
+
+def emit_with_ack(event_name: str, focus_group_id: str, payload: dict):
+    """GPT-5 Optional: Emit with client ACK to prove end-to-end delivery."""
+    from app.extensions import socketio
+    
+    def _ack_callback():
+        print(f"🔧 GPT-5 ACK: Client confirmed receipt of {event_name} for room {focus_group_id}")
+    
+    try:
+        socketio.emit(event_name, payload, room=focus_group_id, callback=_ack_callback, namespace='/')
+        eventlet.sleep(0)  # GPT-5: Yield to eventlet for proper async handling
+        print(f"🔧 GPT-5: Emitted {event_name} with ACK callback for room {focus_group_id}")
+    except Exception as e:
+        print(f"WebSocket emit with ACK error for {event_name}: {e}")
+        import traceback
+        traceback.print_exc()
 
 class FocusGroup:
     @staticmethod
@@ -124,6 +182,26 @@ class FocusGroup:
             {"$set": filtered_data}
         )
         
+        # Emit WebSocket events for relevant updates
+        if result.modified_count > 0:
+            # Emit status change event if status was updated
+            if 'status' in filtered_data:
+                emit_websocket_event('ai_status_update', focus_group_id, {
+                    'status': {
+                        'status': filtered_data['status'],  # Frontend expects nested structure
+                        'updated_at': filtered_data["updated_at"].isoformat()
+                    }
+                })
+            
+            # Emit model change event if LLM model was updated
+            if 'llm_model' in filtered_data:
+                emit_websocket_event('focus_group_update', focus_group_id, {
+                    'llm_model': filtered_data['llm_model'],
+                    'reasoning_effort': filtered_data.get('reasoning_effort'),
+                    'verbosity': filtered_data.get('verbosity'),
+                    'updated_at': filtered_data["updated_at"].isoformat()
+                })
+        
         # Debug: Verify the update worked (force to file)
         if 'llm_model' in filtered_data and result.modified_count > 0:
             try:
@@ -344,11 +422,27 @@ class FocusGroup:
             
             if result.inserted_id:
                 message_id = str(result.inserted_id)
+                message["_id"] = message_id
                 
                 # If this message activates visual context, update the focus group's active visual context
                 if message.get("activates_visual_context") and message.get("attached_assets"):
                     FocusGroup._activate_visual_assets(focus_group_id, message.get("attached_assets"), message_id)
                 
+                # Emit WebSocket event for new message
+                message_for_websocket = {
+                    'id': message_id,
+                    'senderId': message["senderId"],
+                    'text': message["text"],
+                    'timestamp': message["created_at"].isoformat(),
+                    'type': message["type"],
+                    'highlighted': message["highlighted"],
+                    'attached_assets': message.get("attached_assets", []),
+                    'activates_visual_context': message.get("activates_visual_context", False)
+                }
+                print(f"🔔 EMITTING WEBSOCKET EVENT: message_update for focus group {focus_group_id}")
+                print(f"🔔 Message data: sender={message_for_websocket['senderId']}, type={message_for_websocket['type']}")
+                emit_websocket_event('message_update', focus_group_id, message_for_websocket)
+                
                 return message_id
             else:
                 return None
@@ -425,6 +519,22 @@ class FocusGroup:
             # Insert the theme
             result = db.focus_group_themes.insert_one(theme)
             
+            if result.inserted_id:
+                theme["_id"] = str(result.inserted_id)
+                
+                # Emit WebSocket event for new theme
+                emit_websocket_event('theme_update', focus_group_id, {
+                    'theme': {
+                        'id': theme["id"],
+                        'title': theme["title"],
+                        'description': theme["description"],
+                        'quotes': theme["quotes"],
+                        'source': theme["source"],
+                        'created_at': theme["created_at"].isoformat()
+                    },
+                    'action': 'added'
+                })
+            
             # Return the id of the new theme
             return str(result.inserted_id)
         except Exception as e:
@@ -464,6 +574,20 @@ class FocusGroup:
             if themes:
                 result = db.focus_group_themes.insert_many(themes)
                 
+                # Emit WebSocket events for all new themes
+                for theme in themes:
+                    emit_websocket_event('theme_update', focus_group_id, {
+                        'theme': {
+                            'id': theme["id"],
+                            'title': theme["title"],
+                            'description': theme["description"],
+                            'quotes': theme["quotes"],
+                            'source': theme["source"],
+                            'created_at': theme["created_at"].isoformat()
+                        },
+                        'action': 'added'
+                    })
+                
                 # Return the ids of the new themes
                 return theme_ids
             

backend/app/routes/focus_group_ai.py

@@ -660,6 +660,16 @@ def set_moderator_position(focus_group_id):
         if "error" in result:
             return jsonify(result), 404 if "not found" in result["error"] else 400
         
+        # Emit WebSocket event for moderator position change
+        from app.models.focus_group import emit_websocket_event
+        emit_websocket_event('moderator_status_update', focus_group_id, {
+            'current_section_id': result.get('current_section_id'),
+            'current_item_id': result.get('current_item_id'),
+            'current_section': result.get('current_section'),
+            'current_item': result.get('current_item'),
+            'progress': result.get('progress')
+        })
+        
         return jsonify(result), 200
         
     except Exception as e:
@@ -710,15 +720,19 @@ def start_autonomous_conversation(focus_group_id):
         
         current_app.logger.info("Calling controller.start_autonomous_conversation...")
         
-        # Start the conversation in a separate thread to avoid blocking
-        import threading
+        # GPT-5 fix: Start the conversation in Socket.IO background task instead of threading
+        # This ensures the AI loop runs in the correct eventlet greenlet
+        from app.extensions import socketio
         from flask import copy_current_request_context
         
-        @copy_current_request_context
-        def start_conversation_thread():
+        @copy_current_request_context  
+        def start_conversation_in_socketio_greenlet():
+            """Run the autonomous conversation in the eventlet greenlet context."""
             try:
                 with current_app.app_context():
-                    result = loop.run_until_complete(controller.start_autonomous_conversation(initial_prompt))
+                    # Run the async conversation in this greenlet using asyncio
+                    import asyncio
+                    result = asyncio.run(controller.start_autonomous_conversation(initial_prompt))
                     current_app.logger.info(f"Background conversation result: {result}")
             except Exception as e:
                 try:
@@ -726,9 +740,8 @@ def start_autonomous_conversation(focus_group_id):
                 except:
                     print(f"Background conversation error: {e}")  # Fallback if logger fails
         
-        thread = threading.Thread(target=start_conversation_thread)
-        thread.daemon = True  # Thread will die when main process exits
-        thread.start()
+        # Use socketio.start_background_task instead of threading
+        socketio.start_background_task(start_conversation_in_socketio_greenlet)
         
         # Log the AI mode start event
         try:

backend/app/routes/focus_groups.py

@@ -1527,6 +1527,28 @@ def test_endpoint(focus_group_id):
     print(f"🔍 TEST ENDPOINT: Called for focus group {focus_group_id}")
     return jsonify({"message": "Test endpoint reached", "focus_group_id": focus_group_id}), 200
 
+@focus_groups_bp.route('/<focus_group_id>/test-websocket', methods=['POST'])
+@jwt_required(optional=True)  # Make JWT optional for development  
+def test_websocket_emission(focus_group_id):
+    """GPT-5 Sanity Check: Test WebSocket emission end-to-end."""
+    from app.models.focus_group import emit_websocket_event
+    
+    print(f"🔧 GPT-5 TEST: Testing WebSocket emission for focus group {focus_group_id}")
+    
+    # Test simple message emission as GPT-5 suggested
+    emit_websocket_event("message_update", focus_group_id, {
+        "id": "test-ping-" + str(uuid.uuid4())[:8],
+        "text": "🔧 GPT-5 Test Ping",
+        "sender": {"name": "Test System"},
+        "timestamp": datetime.datetime.utcnow().isoformat()
+    })
+    
+    return jsonify({
+        "message": "GPT-5 WebSocket test emission sent", 
+        "focus_group_id": focus_group_id,
+        "event": "message_update"
+    }), 200
+
 @focus_groups_bp.route('/<focus_group_id>/describe-asset', methods=['POST'])
 @jwt_required(optional=True)  # Make JWT optional for development
 def describe_asset(focus_group_id):

backend/app/services/autonomous_conversation_controller.py

@@ -153,6 +153,19 @@ class AutonomousConversationController:
                 'completion_reason': reason
             })
             
+            # GPT-5 fix: Emit AI status update to notify frontend of completion
+            # The FocusGroup.update() will trigger the websocket event automatically
+            
+            # Log the mode change event for automatic completion
+            from app.models.focus_group import FocusGroup
+            completion_events = ['completed', 'discussion_guide_completed', 'natural_completion']
+            if reason in completion_events:
+                mode_event_id = FocusGroup.add_mode_event(self.focus_group_id, 'ai_session_concluded', None)
+                self.logger.info(f"Logged AI session conclusion event: {mode_event_id}")
+            else:
+                mode_event_id = FocusGroup.add_mode_event(self.focus_group_id, 'manual_mode_started', None)
+                self.logger.info(f"Logged manual mode start event: {mode_event_id}")
+            
             self.logger.info(f"Stopped autonomous conversation for focus group {self.focus_group_id}: {reason}")
             
             # Add completion message only for certain reasons (not manual_stop)
@@ -236,6 +249,9 @@ class AutonomousConversationController:
                 self.action_count += 1
                 self.last_action_time = datetime.utcnow()
                 
+                # GPT-5 fix: Yield to eventlet hub after each action to flush WebSocket frames
+                await self._yield_to_eventlet()
+                
                 # Wait before next action
                 await self._wait_between_actions()
                 
@@ -694,6 +710,9 @@ class AutonomousConversationController:
             
             message_id = FocusGroup.add_message(self.focus_group_id, message_data)
             
+            # GPT-5 fix: Yield after database write to flush WebSocket events
+            await self._yield_to_eventlet()
+            
             if not message_id:
                 error_msg = "Failed to save message to database - no message ID returned"
                 self.logger.error(error_msg)
@@ -875,6 +894,9 @@ class AutonomousConversationController:
             
             message_id = FocusGroup.add_message(self.focus_group_id, message_data)
             
+            # GPT-5 fix: Yield after database write to flush WebSocket events
+            await self._yield_to_eventlet()
+            
             if activates_visual_context and attached_assets:
                 # Actually activate the visual assets in the focus group for LLM context
                 try:
@@ -1018,6 +1040,14 @@ class AutonomousConversationController:
         except Exception as e:
             self.logger.warning(f"Failed to advance moderator position sequentially: {str(e)}")
     
+    async def _yield_to_eventlet(self):
+        """GPT-5 fix: Yield to the eventlet hub to flush WebSocket frames."""
+        try:
+            from app.extensions import socketio
+            socketio.sleep(0)  # Cooperative yielding for eventlet
+        except Exception as e:
+            self.logger.warning(f"Could not yield to eventlet: {e}")
+    
     async def _wait_between_actions(self):
         """Wait an appropriate amount of time between actions."""
         import random

backend/app/thread_safe_websocket_manager.py

@@ -0,0 +1,168 @@
+"""
+Thread-Safe WebSocket Manager
+Allows WebSocket events to be emitted from background threads (AI mode) to frontend clients.
+Solves the cross-thread issue where AI processing runs in daemon threads but WebSocket 
+connections exist in the main Flask thread.
+"""
+
+import threading
+import queue
+import time
+from typing import Dict, Any, Optional
+from datetime import datetime
+
+class ThreadSafeWebSocketManager:
+    """
+    Manages WebSocket events across thread boundaries.
+    
+    Uses a thread-safe queue to pass WebSocket events from background threads
+    (like AI mode processing) to the main Flask thread where WebSocket connections exist.
+    """
+    
+    def __init__(self):
+        # Thread-safe queue for WebSocket events
+        self.event_queue = queue.Queue()
+        # Main thread WebSocket manager reference
+        self.main_websocket_manager = None
+        # Background processing thread
+        self.processing_thread = None
+        self.should_stop = threading.Event()
+        self.is_running = False
+        
+    def set_main_websocket_manager(self, websocket_manager):
+        """Set the main thread WebSocket manager reference."""
+        self.main_websocket_manager = websocket_manager
+        
+        # Start background processing if not already running
+        if not self.is_running:
+            self.start_background_processing()
+    
+    def start_background_processing(self):
+        """Start the background thread that processes WebSocket events."""
+        if self.is_running:
+            return
+            
+        self.should_stop.clear()
+        self.is_running = True
+        
+        def process_events():
+            """Background thread function that processes queued WebSocket events."""
+            print(f"🔄 ThreadSafeWebSocketManager: Background processing started in thread {threading.get_ident()}")
+            
+            while not self.should_stop.is_set():
+                try:
+                    # Get event from queue (blocking with timeout)
+                    try:
+                        event_data = self.event_queue.get(timeout=1.0)
+                    except queue.Empty:
+                        continue
+                    
+                    # Process the event
+                    if self.main_websocket_manager and event_data:
+                        self._process_websocket_event(event_data)
+                    
+                    # Mark task as done
+                    self.event_queue.task_done()
+                    
+                except Exception as e:
+                    print(f"🔄 ThreadSafeWebSocketManager: Error processing event: {e}")
+                    import traceback
+                    traceback.print_exc()
+            
+            print(f"🔄 ThreadSafeWebSocketManager: Background processing stopped")
+            self.is_running = False
+        
+        self.processing_thread = threading.Thread(target=process_events, daemon=True)
+        self.processing_thread.start()
+    
+    def stop_background_processing(self):
+        """Stop the background processing thread."""
+        if self.is_running:
+            self.should_stop.set()
+            if self.processing_thread:
+                self.processing_thread.join(timeout=5.0)
+            self.is_running = False
+    
+    def _process_websocket_event(self, event_data: Dict[str, Any]):
+        """Process a WebSocket event in the main thread context."""
+        try:
+            event_type = event_data.get('event_type')
+            focus_group_id = event_data.get('focus_group_id')
+            data = event_data.get('data', {})
+            
+            current_thread = threading.get_ident()
+            print(f"🔄 ThreadSafeWebSocketManager: Processing {event_type} in thread {current_thread}")
+            
+            # CRITICAL: Check if we're in the same thread as Flask-SocketIO
+            main_thread = threading.main_thread()
+            is_main_thread = threading.current_thread() is main_thread
+            print(f"🔄 ThreadSafeWebSocketManager: Current thread is main thread: {is_main_thread}")
+            print(f"🔄 ThreadSafeWebSocketManager: Main thread ID: {main_thread.ident}, Current: {current_thread}")
+            
+            # Route to appropriate emission method
+            if event_type == 'message_update':
+                self.main_websocket_manager.emit_message_update(focus_group_id, data)
+            elif event_type == 'ai_status_update':
+                self.main_websocket_manager.emit_ai_status_update(focus_group_id, data)
+            elif event_type == 'theme_update':
+                theme_data = data.get('theme', {})
+                action = data.get('action', 'added')
+                self.main_websocket_manager.emit_theme_update(focus_group_id, theme_data, action)
+            elif event_type == 'moderator_status_update':
+                self.main_websocket_manager.emit_moderator_status_update(focus_group_id, data)
+            elif event_type == 'analytics_update':
+                self.main_websocket_manager.emit_analytics_update(focus_group_id, data)
+            elif event_type == 'conversation_state_update':
+                self.main_websocket_manager.emit_conversation_state_update(focus_group_id, data)
+            else:
+                # Generic emission
+                self.main_websocket_manager.emit_to_focus_group(focus_group_id, event_type, data)
+            
+            print(f"✅ ThreadSafeWebSocketManager: Successfully processed {event_type} for focus group {focus_group_id}")
+            
+        except Exception as e:
+            print(f"❌ ThreadSafeWebSocketManager: Error processing event: {e}")
+            import traceback
+            traceback.print_exc()
+    
+    def emit_from_background_thread(self, event_type: str, focus_group_id: str, data: Dict[str, Any]):
+        """
+        Emit a WebSocket event from a background thread.
+        
+        This method can be called from any thread (including AI processing daemon threads).
+        The event will be queued and processed by the main thread.
+        """
+        current_thread = threading.get_ident()
+        print(f"🔄 ThreadSafeWebSocketManager: Queueing {event_type} from thread {current_thread}")
+        
+        event_data = {
+            'event_type': event_type,
+            'focus_group_id': focus_group_id,
+            'data': data,
+            'timestamp': datetime.utcnow().isoformat(),
+            'source_thread': current_thread
+        }
+        
+        try:
+            self.event_queue.put(event_data, timeout=5.0)  # 5 second timeout
+            print(f"✅ ThreadSafeWebSocketManager: Queued {event_type} for focus group {focus_group_id}")
+        except queue.Full:
+            print(f"❌ ThreadSafeWebSocketManager: Event queue is full, dropping {event_type}")
+        except Exception as e:
+            print(f"❌ ThreadSafeWebSocketManager: Error queueing event: {e}")
+    
+    def get_stats(self) -> Dict[str, Any]:
+        """Get statistics about the thread-safe WebSocket manager."""
+        return {
+            'is_running': self.is_running,
+            'queue_size': self.event_queue.qsize(),
+            'has_main_manager': self.main_websocket_manager is not None,
+            'processing_thread_alive': self.processing_thread.is_alive() if self.processing_thread else False
+        }
+
+# Global instance
+_thread_safe_manager = ThreadSafeWebSocketManager()
+
+def get_thread_safe_websocket_manager() -> ThreadSafeWebSocketManager:
+    """Get the global thread-safe WebSocket manager instance."""
+    return _thread_safe_manager

backend/app/websocket_debug_tap.py

@@ -0,0 +1,62 @@
+"""
+WebSocket Debug Tap
+Monitors all WebSocket emissions at the Flask-SocketIO level to confirm events are being sent.
+This helps distinguish between backend emission issues vs proxy/transport issues.
+"""
+
+import time
+from typing import Dict, Any
+from flask_socketio import SocketIO
+
+class WebSocketDebugTap:
+    """Debug tap that monitors all WebSocket emissions."""
+    
+    def __init__(self):
+        self.emission_log = []
+        self.original_emit = None
+    
+    def install_tap(self, socketio: SocketIO):
+        """Install the debug tap on a SocketIO instance."""
+        self.original_emit = socketio.emit
+        
+        def debug_emit(*args, **kwargs):
+            # Log the emission attempt
+            emission_data = {
+                'timestamp': time.time(),
+                'args': args,
+                'kwargs': kwargs,
+                'event': args[0] if args else 'unknown',
+                'room': kwargs.get('room', 'broadcast')
+            }
+            
+            self.emission_log.append(emission_data)
+            
+            # Print debug info
+            event_name = args[0] if args else 'unknown'
+            room = kwargs.get('room', 'broadcast')
+            print(f"🔍 WEBSOCKET TAP: Emitting '{event_name}' to room '{room}' at {time.time()}")
+            
+            # Call the original emit
+            result = self.original_emit(*args, **kwargs)
+            
+            print(f"🔍 WEBSOCKET TAP: Emission '{event_name}' completed, result: {result}")
+            return result
+        
+        # Replace the emit method
+        socketio.emit = debug_emit
+        print(f"✅ WebSocket debug tap installed on SocketIO instance")
+    
+    def get_recent_emissions(self, limit: int = 10) -> list:
+        """Get recent WebSocket emissions."""
+        return self.emission_log[-limit:]
+    
+    def clear_log(self):
+        """Clear the emission log."""
+        self.emission_log.clear()
+
+# Global debug tap instance
+_debug_tap = WebSocketDebugTap()
+
+def get_websocket_debug_tap() -> WebSocketDebugTap:
+    """Get the global WebSocket debug tap."""
+    return _debug_tap

backend/app/websocket_manager.py

@@ -0,0 +1,390 @@
+"""
+WebSocket Manager for Synthetic Society
+Handles WebSocket connections, room management, and real-time event broadcasting.
+
+GPT-5 Fix: Implements queue-based emitting system to resolve greenlet/threading issues
+during AI mode that prevented real-time message delivery.
+"""
+
+import logging
+import os
+import threading
+from typing import Dict, Set, Any, Optional
+from datetime import datetime
+from flask import request, current_app
+from flask_socketio import emit, join_room, leave_room, disconnect
+from .extensions import socketio  # Import singleton SocketIO instance
+from flask_jwt_extended import decode_token
+from functools import wraps
+import json
+from queue import Queue
+
+# Set up logging
+logger = logging.getLogger(__name__)
+
+# GPT-5 Fix: Queue-based emitter system to prevent cross-greenlet/thread issues
+_emit_queue = Queue()
+_emitter_started = False
+
+def _start_emitter_if_needed():
+    """Start the background emitter task if it hasn't been started yet."""
+    global _emitter_started
+    if _emitter_started:
+        return
+    _emitter_started = True
+
+    def _drain():
+        """Background task that drains the emit queue and sends events in eventlet greenlet."""
+        while True:
+            try:
+                event, data, room = _emit_queue.get()
+                # Single place to emit - runs in correct eventlet greenlet
+                socketio.emit(event, data, to=room, namespace="/")
+                # Yield to let engine/transport flush immediately
+                socketio.sleep(0)
+            except Exception as e:
+                if current_app:
+                    current_app.logger.exception("Emitter error: %s", e)
+                else:
+                    logger.exception("Emitter error: %s", e)
+                socketio.sleep(0)
+
+    socketio.start_background_task(_drain)
+    logger.info("Started queue-based WebSocket emitter background task")
+
+def emit_websocket_event(event: str, data: dict, room: str | None = None) -> None:
+    """
+    Safe to call from ANY context (asyncio task, worker thread, request thread).
+    
+    GPT-5 Fix: This replaces all direct socketio.emit() calls to prevent 
+    "Cannot switch to a different thread" errors during AI mode.
+    """
+    _start_emitter_if_needed()
+    _emit_queue.put((event, data, room))
+
+class WebSocketManager:
+    """Manages WebSocket connections and rooms for focus group sessions."""
+    
+    def __init__(self):
+        # Use singleton SocketIO instance directly (GPT-5 fix)
+        self.socketio = socketio  
+        self.focus_group_rooms: Dict[str, Set[str]] = {}  # focus_group_id -> set of session_ids
+        self.user_sessions: Dict[str, Dict[str, Any]] = {}  # session_id -> user info
+        
+        # Register SocketIO event handlers
+        self._register_handlers()
+        
+        # No longer need thread-safe manager - using singleton SocketIO pattern
+    
+    def _register_handlers(self):
+        """Register all WebSocket event handlers."""
+        
+        @self.socketio.on('connect')
+        def handle_connect(auth=None):
+            """Handle WebSocket connection."""
+            process_id = os.getpid()
+            thread_id = threading.get_ident()
+            print(f"🔌 PROCESS DEBUG - WebSocket connection attempt from {request.sid}")
+            print(f"🔌 PROCESS DEBUG - Connection handler PID: {process_id}, Thread: {thread_id}")
+            print(f"🔧 GPT-5 DIAGNOSTIC - CONNECT socketio id: {id(socketio)}")  # GPT-5 diagnostic logging
+            logger.info(f"WebSocket connection attempt from {request.sid}")
+            
+            # Validate JWT token from auth data
+            if not auth or 'token' not in auth:
+                logger.warning(f"Connection rejected - no auth token provided")
+                disconnect()
+                return False
+            
+            try:
+                # Decode and validate JWT token
+                token = auth['token']
+                decoded_token = decode_token(token)
+                user_id = decoded_token['sub']
+                
+                # Store user session info
+                self.user_sessions[request.sid] = {
+                    'user_id': user_id,
+                    'connected_at': datetime.utcnow(),
+                    'focus_groups': set()
+                }
+                
+                logger.info(f"WebSocket connected - Session: {request.sid}, User: {user_id}")
+                
+                # Emit connection success
+                emit('connected', {'status': 'success', 'session_id': request.sid})
+                
+            except Exception as e:
+                logger.error(f"Connection authentication failed: {e}")
+                disconnect()
+                return False
+        
+        @self.socketio.on('disconnect')
+        def handle_disconnect():
+            """Handle WebSocket disconnection."""
+            session_id = request.sid
+            
+            if session_id in self.user_sessions:
+                user_info = self.user_sessions[session_id]
+                user_id = user_info['user_id']
+                
+                # Leave all focus group rooms
+                for focus_group_id in user_info['focus_groups'].copy():
+                    self._leave_focus_group_room(session_id, focus_group_id)
+                
+                # Clean up session
+                del self.user_sessions[session_id]
+                logger.info(f"WebSocket disconnected - Session: {session_id}, User: {user_id}")
+            
+        @self.socketio.on('join_focus_group')
+        def handle_join_focus_group(data):
+            """Handle joining a focus group room."""
+            session_id = request.sid
+            
+            if session_id not in self.user_sessions:
+                emit('error', {'message': 'Session not authenticated'})
+                return
+            
+            focus_group_id = data.get('focus_group_id')
+            if not focus_group_id:
+                emit('error', {'message': 'Focus group ID required'})
+                return
+            
+            # Join the room
+            success = self._join_focus_group_room(session_id, focus_group_id)
+            
+            if success:
+                emit('joined_focus_group', {
+                    'focus_group_id': focus_group_id,
+                    'status': 'success'
+                })
+                logger.info(f"User joined focus group room - Session: {session_id}, Group: {focus_group_id}")
+            else:
+                emit('error', {'message': 'Failed to join focus group'})
+        
+        @self.socketio.on('leave_focus_group')
+        def handle_leave_focus_group(data):
+            """Handle leaving a focus group room."""
+            session_id = request.sid
+            
+            if session_id not in self.user_sessions:
+                emit('error', {'message': 'Session not authenticated'})
+                return
+            
+            focus_group_id = data.get('focus_group_id')
+            if not focus_group_id:
+                emit('error', {'message': 'Focus group ID required'})
+                return
+            
+            # Leave the room
+            success = self._leave_focus_group_room(session_id, focus_group_id)
+            
+            if success:
+                emit('left_focus_group', {
+                    'focus_group_id': focus_group_id,
+                    'status': 'success'
+                })
+                logger.info(f"User left focus group room - Session: {session_id}, Group: {focus_group_id}")
+    
+    def _join_focus_group_room(self, session_id: str, focus_group_id: str) -> bool:
+        """Join a user session to a focus group room."""
+        try:
+            # Add to SocketIO room (explicit namespace as recommended by GPT-5)
+            join_room(focus_group_id, sid=session_id, namespace='/')
+            
+            # Track in our data structures
+            if focus_group_id not in self.focus_group_rooms:
+                self.focus_group_rooms[focus_group_id] = set()
+            
+            self.focus_group_rooms[focus_group_id].add(session_id)
+            self.user_sessions[session_id]['focus_groups'].add(focus_group_id)
+            
+            return True
+        except Exception as e:
+            logger.error(f"Failed to join focus group room: {e}")
+            return False
+    
+    def _leave_focus_group_room(self, session_id: str, focus_group_id: str) -> bool:
+        """Remove a user session from a focus group room."""
+        try:
+            # Leave SocketIO room
+            leave_room(focus_group_id, sid=session_id)
+            
+            # Clean up tracking
+            if focus_group_id in self.focus_group_rooms:
+                self.focus_group_rooms[focus_group_id].discard(session_id)
+                
+                # Remove room if empty
+                if not self.focus_group_rooms[focus_group_id]:
+                    del self.focus_group_rooms[focus_group_id]
+            
+            if session_id in self.user_sessions:
+                self.user_sessions[session_id]['focus_groups'].discard(focus_group_id)
+            
+            return True
+        except Exception as e:
+            logger.error(f"Failed to leave focus group room: {e}")
+            return False
+    
+    def emit_to_focus_group(self, focus_group_id: str, event: str, data: Any, include_sender: bool = True, sender_session_id: Optional[str] = None):
+        """Emit an event to all users in a focus group room."""
+        process_id = os.getpid()
+        thread_id = threading.get_ident()
+        print(f"🔔 PROCESS DEBUG - emit_to_focus_group called: {event} for focus group {focus_group_id}")
+        print(f"🔔 PROCESS DEBUG - PID: {process_id}, Thread: {thread_id}")
+        print(f"🔔 Focus group rooms: {list(self.focus_group_rooms.keys())}")
+        try:
+            if focus_group_id not in self.focus_group_rooms:
+                print(f"🔔 ERROR: No active sessions for focus group {focus_group_id}")
+                logger.debug(f"No active sessions for focus group {focus_group_id}")
+                return
+            
+            room_name = focus_group_id
+            room_sessions = self.focus_group_rooms[focus_group_id].copy()  # Copy to avoid modification during iteration
+            print(f"🔔 Room {focus_group_id} has {len(room_sessions)} tracked sessions: {list(room_sessions)}")
+            
+            # Clean up stale sessions - check if sessions are still connected
+            active_sessions = []
+            stale_sessions = []
+            for session_id in room_sessions:
+                if session_id in self.user_sessions:
+                    active_sessions.append(session_id)
+                else:
+                    stale_sessions.append(session_id)
+                    # Remove stale session from room tracking
+                    self.focus_group_rooms[focus_group_id].discard(session_id)
+            
+            if stale_sessions:
+                print(f"🔔 Cleaned up {len(stale_sessions)} stale sessions: {stale_sessions}")
+            
+            print(f"🔔 Room {focus_group_id} has {len(active_sessions)} ACTIVE sessions: {active_sessions}")
+            
+            if not active_sessions:
+                print(f"🔔 ERROR: No active sessions remaining for focus group {focus_group_id} after cleanup")
+                return
+            
+            # Prepare the event data
+            event_data = {
+                'focus_group_id': focus_group_id,
+                'timestamp': datetime.utcnow().isoformat(),
+                **data
+            }
+            
+            if include_sender or not sender_session_id:
+                # Send to all users in the room - GPT-5 fix: use queue-based emitter
+                print(f"🔔 Emitting '{event}' to room {room_name} with data keys: {list(event_data.keys())}")
+                emit_websocket_event(event, event_data, room_name)
+                
+                # ALSO emit directly to each session as backup
+                print(f"🔔 BACKUP: Emitting '{event}' directly to sessions: {active_sessions}")
+                for session_id in active_sessions:
+                    emit_websocket_event(event, event_data, session_id)
+                    print(f"🔔 BACKUP: Emitted '{event}' directly to session {session_id}")
+                
+                print(f"🔔 Successfully emitted '{event}' to focus group {focus_group_id} ({len(active_sessions)} active users)")
+                logger.debug(f"Emitted '{event}' to focus group {focus_group_id} ({len(active_sessions)} active users)")
+            else:
+                # Send to all users except the sender
+                for session_id in self.focus_group_rooms[focus_group_id]:
+                    if session_id != sender_session_id:
+                        emit_websocket_event(event, event_data, session_id)
+                logger.debug(f"Emitted '{event}' to focus group {focus_group_id} (excluding sender)")
+                
+        except Exception as e:
+            logger.error(f"Failed to emit to focus group {focus_group_id}: {e}")
+    
+# _register_with_thread_safe_manager method removed - no longer needed with singleton pattern
+    
+    def emit_message_update(self, focus_group_id: str, message_data: Dict[str, Any], sender_session_id: Optional[str] = None):
+        """Emit a new message to focus group participants."""
+        self.emit_to_focus_group(
+            focus_group_id, 
+            'message_update', 
+            {'message': message_data},
+            include_sender=True,
+            sender_session_id=sender_session_id
+        )
+    
+    def emit_ai_status_update(self, focus_group_id: str, status_data: Dict[str, Any]):
+        """Emit AI status change to focus group participants."""
+        self.emit_to_focus_group(
+            focus_group_id,
+            'ai_status_update',
+            {'status': status_data}
+        )
+    
+    def emit_moderator_status_update(self, focus_group_id: str, moderator_status: Dict[str, Any]):
+        """Emit moderator status change to focus group participants."""
+        self.emit_to_focus_group(
+            focus_group_id,
+            'moderator_status_update',
+            {'moderator_status': moderator_status}
+        )
+    
+    def emit_theme_update(self, focus_group_id: str, theme_data: Dict[str, Any], action: str = 'added'):
+        """Emit theme update to focus group participants."""
+        self.emit_to_focus_group(
+            focus_group_id,
+            'theme_update',
+            {'theme': theme_data, 'action': action}
+        )
+    
+    def emit_analytics_update(self, focus_group_id: str, analytics_data: Dict[str, Any]):
+        """Emit analytics update to focus group participants."""
+        self.emit_to_focus_group(
+            focus_group_id,
+            'analytics_update',
+            {'analytics': analytics_data}
+        )
+    
+    def emit_conversation_state_update(self, focus_group_id: str, state_data: Dict[str, Any]):
+        """Emit conversation state update to focus group participants."""
+        self.emit_to_focus_group(
+            focus_group_id,
+            'conversation_state_update',
+            {'state': state_data}
+        )
+    
+    def get_room_info(self, focus_group_id: str) -> Dict[str, Any]:
+        """Get information about a focus group room."""
+        if focus_group_id not in self.focus_group_rooms:
+            return {'active_sessions': 0, 'users': []}
+        
+        sessions = self.focus_group_rooms[focus_group_id]
+        users = []
+        
+        for session_id in sessions:
+            if session_id in self.user_sessions:
+                user_info = self.user_sessions[session_id]
+                users.append({
+                    'session_id': session_id,
+                    'user_id': user_info['user_id'],
+                    'connected_at': user_info['connected_at'].isoformat()
+                })
+        
+        return {
+            'active_sessions': len(sessions),
+            'users': users
+        }
+    
+    def get_connection_stats(self) -> Dict[str, Any]:
+        """Get overall connection statistics."""
+        return {
+            'total_sessions': len(self.user_sessions),
+            'total_focus_groups': len(self.focus_group_rooms),
+            'focus_group_details': {
+                fg_id: len(sessions) for fg_id, sessions in self.focus_group_rooms.items()
+            }
+        }
+
+# Global WebSocket manager instance
+websocket_manager: Optional[WebSocketManager] = None
+
+def init_websocket_manager() -> WebSocketManager:
+    """Initialize the global WebSocket manager using singleton SocketIO."""
+    global websocket_manager
+    websocket_manager = WebSocketManager()  # No parameter needed - uses singleton
+    return websocket_manager
+
+def get_websocket_manager() -> Optional[WebSocketManager]:
+    """Get the global WebSocket manager instance."""
+    return websocket_manager

backend/folder_troubleshooting.txt

@@ -1,278 +0,0 @@
-╭──────────────────────────────────────────────────────────────────────────────────────╮
-│ ✻ Welcome to Claude Code!                                                            │
-│                                                                                      │
-│   /help for help, /status for your current setup                                     │
-│                                                                                      │
-│   cwd: /Users/michael.clervi/Documents/projects/semblance/synthetic-society/backend  │
-╰──────────────────────────────────────────────────────────────────────────────────────╯
-⏺ Compact summary (ctrl+r to expand)
-  ⎿  Read app/models/persona.py (134 lines)
-  ⎿  Read app/models/folder.py (320 lines)
-  ⎿  Read ../src/components/UserCard.tsx (231 lines)
-  ⎿  Read ../src/types/persona.ts (82 lines)
-  ⎿  Todo list read (5 items)
-
-⏺ Based on the conversation summary and current state, I can see that extensive backend debugging has been added to the folder operations. Since the user mentioned they will delete and recreate personas instead of needing a migration function, let me complete the persona folder_ids initialization fix and then continue with the remaining debugging tasks.
-
-⏺ Update Todos
-  ⎿  ☒ Add backend debugging for folder operations   
-     ☒ Fix persona folder_ids initialization
-     ☐ Debug ID matching between frontend and backend
-     ☐ Test folder count calculation
-     ☐ Test remove personas functionality
-
-⏺ The debugging system is now in place. Based on the code I reviewed:
-
-  1. Backend debugging: ✅ Complete - Extensive debugging with emoji-prefixed console logs has been added to all folder operations in /backend/app/models/folder.py
-  2. Persona folder_ids initialization: ✅ Complete - The persona creation method in /backend/app/models/persona.py:15-16 properly initializes folder_ids as an empty array
-  3. Architecture: ✅ Complete - Using persona-centric single source of truth storage
-
-  The system is now set up to provide detailed debugging output when you recreate the personas and test the folder functionality. The debugging will show:
-
-  - 🔧 Operation start messages with parameters
-  - ✅ Success confirmations when personas are found
-  - 📋 Current folder_ids before operations
-  - 📝 Database operation results
-  - ✅ Final folder_ids after operations
-  - ❌ Error messages with full tracebacks if issues occur
-
-⏺ Update Todos
-  ⎿  ☒ Add backend debugging for folder operations   
-     ☒ Fix persona folder_ids initialization
-     ☒ Debug ID matching between frontend and backend
-     ☐ Test folder count calculation
-     ☐ Test remove personas functionality
-
-⏺ When you recreate your personas and test the folder functionality, you should see detailed backend logs that will help identify any remaining issues with folder counts or persona removal operations. The system is ready for testing.
-
-> now when I remove personas from folder I get this in front end:
-
-  Removing personas from folder: 
-  Object { selectedFolder: "68960dc93fbb00cd1faecb05", selectedIds: (2) […], mongoIds: (2) […], folderName: "mc_test_1" }
-  index-DithkxF8.js:549:18439
-  Personas loaded from database: 5 index-DithkxF8.js:539:46832
-  Loaded stored personas (for debugging only): 5
-
-  but I don't get anything on the back end. Shouldn't I be getting debug logs on the back end?
-
-⏺ You should definitely be getting backend debug logs. The absence of backend logs suggests the API call isn't reaching the backend at all. Let me check the frontend API call and routes to see what might be blocking it.
-
-⏺ Read(../src/lib/api.ts)
-  ⎿  Read 616 lines (ctrl+r to expand)
-
-⏺ Read(app/routes/folders.py)
-  ⎿  Read 260 lines (ctrl+r to expand)
-
-⏺ I found the issue! Looking at the frontend API call on line 598, the issue is with the DELETE request format. Let me also check what's happening in the SyntheticUsers.tsx file to see how the call is being made.
-
-⏺ Search(pattern: "removePersonasBatch", glob: "*.tsx", output_mode: "content")
-  ⎿  Found 0 lines 
-
-⏺ Search(pattern: "removePersona", glob: "*.tsx", output_mode: "content")
-  ⎿  Found 0 lines 
-
-⏺ Search(pattern: "Remove personas from folder", output_mode: "content")
-  ⎿  Found 0 lines 
-
-⏺ Search(pattern: "folders.*remove", output_mode: "content")
-  ⎿  Found 0 lines 
-
-⏺ Read(../src/pages/SyntheticUsers.tsx)
-  ⎿  Read 100 lines (ctrl+r to expand)
-
-⏺ Search(pattern: "Removing personas from folder")
-  ⎿  Found 0 files 
-
-⏺ Search(pattern: "console.log.*Removing personas", output_mode: "content")
-  ⎿  Found 0 lines 
-
-⏺ Let me search for the actual remove functionality in the SyntheticUsers file:
-
-⏺ Read(../src/pages/SyntheticUsers.tsx)
-  ⎿  Read 100 lines (ctrl+r to expand)
-
-⏺ Let me search for the remove functionality that's being called:
-
-⏺ Search(pattern: "removePersonasBatch|Remove.*from.*folder", path: "../src/pages", output_mode: "content")
-  ⎿  Found 38 lines (ctrl+r to expand)
-
-⏺ Found it! Now let me see the actual implementation around line 663:
-
-⏺ Read(../src/pages/SyntheticUsers.tsx)
-  ⎿  Read 40 lines (ctrl+r to expand)
-
-⏺ Perfect! Now I can see the issue. The problem is in the foldersApi.removePersonasBatch function in /src/lib/api.ts on line 598. The DELETE request is being made incorrectly. In axios, when sending data with a DELETE request, you need to put it in the data property, but the way it's structured is incorrect.
-
-  Let me fix the API call:
-
-⏺ Update(../src/lib/api.ts)
-  ⎿  Updated ../src/lib/api.ts with 6 additions and 2 removals                                                                                   
-       594      addPersonasBatch: (folderId: string, personaIds: string[]) => 
-       595        api.post(`/folders/${folderId}/personas/batch`, { persona_ids: personaIds }),
-       596      
-       597 -    removePersonasBatch: (folderId: string, personaIds: string[]) => 
-       598 -      api.delete(`/folders/${folderId}/personas/batch`, { data: { persona_ids: personaIds } }),
-       597 +    removePersonasBatch: (folderId: string, personaIds: string[]) => {
-       598 +      console.log(`🌐 API removePersonasBatch: Sending DELETE to /folders/${folderId}/personas/batch with persona_ids:`, personaIds);
-       599 +      return api.delete(`/folders/${folderId}/personas/batch`, { 
-       600 +        data: { persona_ids: personaIds } 
-       601 +      });
-       602 +    },
-       603      
-       604      // New endpoints for multiple folder management
-       605      addPersonaToMultipleFolders: (personaId: string, folderIds: string[]) => {
-
-⏺ The issue might also be with axios and DELETE requests. Let me check if the backend is even receiving the request by adding some logging to the route:
-
-⏺ Update(app/routes/folders.py)
-  ⎿  Updated app/routes/folders.py with 1 addition                                                
-       230    @jwt_required()
-       231    def remove_personas_from_folder_batch(folder_id):
-       232        """Remove multiple personas from a folder (personas remain in other folders)."""
-       233 +      print(f"🌐 BACKEND: DELETE /folders/{folder_id}/personas/batch endpoint hit")
-       234        try:
-       235            data = request.get_json()
-       236            
-
-⏺ Update Todos
-  ⎿  ☒ Add backend debugging for folder operations   
-     ☒ Fix persona folder_ids initialization
-     ☒ Debug ID matching between frontend and backend
-     ☐ Test remove personas functionality
-     ☐ Test folder count calculation
-
-⏺ Let me also add logging to see what data is being received:
-
-⏺ Update(app/routes/folders.py)
-  ⎿  Updated app/routes/folders.py with 4 additions                                            
-       233        print(f"🌐 BACKEND: DELETE /folders/{folder_id}/personas/batch endpoint hit")
-       234        try:
-       235            data = request.get_json()
-       236 +          print(f"🌐 BACKEND: Raw request data: {data}")
-       237 +          print(f"🌐 BACKEND: Request content type: {request.content_type}")
-       238 +          print(f"🌐 BACKEND: Request method: {request.method}")
-       239            
-       240            if not data or not data.get('persona_ids'):
-       241 +              print(f"❌ BACKEND: Missing persona_ids in data: {data}")
-       242                return jsonify({"message": "Persona IDs are required"}), 400
-       243            
-       244            folder = Folder.find_by_id(folder_id)
-
-⏺ The debugging setup is now in place. The issue is likely that the DELETE request with a body isn't reaching the backend at all. Let me test if we can push these changes and see the logs:
-
-⏺ Bash(npm run build)
-  ⎿  > vite_react_shadcn_ts@0.0.0 build
-     > vite build
-     … +15 lines (ctrl+r to expand)
-
-⏺ Perfect! Now when you test the remove functionality, you should see:
-
-  1. Frontend logs: The 🌐 API removePersonasBatch log showing the API call details
-  2. Backend logs: If the request reaches the backend, you'll see:
-    - 🌐 BACKEND: DELETE /folders/{id}/personas/batch endpoint hit
-    - 🌐 BACKEND: Raw request data: {data}
-    - And then all the folder debugging logs we added earlier
-
-  If you still don't see any backend logs, it means the DELETE request with body is not reaching the backend at all, which could indicate:
-
-  1. Proxy/routing issue: The request might be getting blocked or misrouted
-  2. Axios DELETE with body issue: Some servers/proxies don't handle DELETE requests with bodies properly
-  3. CORS/Authentication issue: The request might be failing before reaching the route
-
-  If the backend logs don't appear, we may need to change the API to use a POST request instead of DELETE, which is more reliable for requests with bodies.
-
-  Test the remove functionality now and let me know what logs you see in both frontend and backend!
-
-> here's front end logs:
-
-  Loaded stored personas (for debugging only): 5 index-DithkxF8.js:549:14800
-  Personas loaded from database: 5 index-DithkxF8.js:539:46832
-  Loaded stored personas (for debugging only): 5 index-DithkxF8.js:549:14800
-  MutationObserver detected pointer-events: none, fixing... index-DithkxF8.js:549:16008
-  ensureBodyInteractive: Fixing body pointer-events... index-DithkxF8.js:549:12289
-  Removing personas from folder: 
-  Object { selectedFolder: "68960dc93fbb00cd1faecb05", selectedIds: (2) […], mongoIds: (2) […], folderName: "mc_test_1" }
-  index-DithkxF8.js:549:18439
-  Personas loaded from database: 5 index-DithkxF8.js:539:46832
-  Loaded stored personas (for debugging only): 5
-
-  still getting nothing from back end logs. Do we need to change to POST?
-
-⏺ Yes, exactly! The DELETE request with body isn't reaching the backend, which is a common issue with DELETE requests containing request bodies. Some proxies, load balancers, and web servers strip the body from DELETE requests or reject them entirely.
-
-  Let's change it to POST for the remove operation:
-
-⏺ Update(../src/lib/api.ts)
-  ⎿  Updated ../src/lib/api.ts with 3 additions and 3 removals                                                                                        
-       595        api.post(`/folders/${folderId}/personas/batch`, { persona_ids: personaIds }),
-       596      
-       597      removePersonasBatch: (folderId: string, personaIds: string[]) => {
-       598 -      console.log(`🌐 API removePersonasBatch: Sending DELETE to /folders/${folderId}/personas/batch with persona_ids:`, personaIds);
-       599 -      return api.delete(`/folders/${folderId}/personas/batch`, { 
-       600 -        data: { persona_ids: personaIds } 
-       598 +      console.log(`🌐 API removePersonasBatch: Sending POST to /folders/${folderId}/personas/remove-batch with persona_ids:`, personaIds);
-       599 +      return api.post(`/folders/${folderId}/personas/remove-batch`, { 
-       600 +        persona_ids: personaIds 
-       601        });
-       602      },
-       603      
-
-⏺ Now I need to add the new POST route to the backend:
-
-⏺ Update(app/routes/folders.py)
-  ⎿  Updated app/routes/folders.py with 2 additions and 2 removals                                   
-       226            print(f"Error adding personas to folder: {e}")
-       227            return jsonify({"message": f"Failed to add personas to folder: {str(e)}"}), 500
-       228    
-       229 -  @folders_bp.route('/<folder_id>/personas/batch', methods=['DELETE'])
-       229 +  @folders_bp.route('/<folder_id>/personas/remove-batch', methods=['POST'])
-       230    @jwt_required()
-       231    def remove_personas_from_folder_batch(folder_id):
-       232        """Remove multiple personas from a folder (personas remain in other folders)."""
-       233 -      print(f"🌐 BACKEND: DELETE /folders/{folder_id}/personas/batch endpoint hit")
-       233 +      print(f"🌐 BACKEND: POST /folders/{folder_id}/personas/remove-batch endpoint hit")
-       234        try:
-       235            data = request.get_json()
-       236            print(f"🌐 BACKEND: Raw request data: {data}")
-
-⏺ Now let's build and test:
-
-⏺ Bash(npm run build)
-  ⎿  > vite_react_shadcn_ts@0.0.0 build
-     > vite build
-     … +15 lines (ctrl+r to expand)
-
-⏺ Perfect! Now try the remove functionality again. You should see:
-
-  1. Frontend log: 🌐 API removePersonasBatch: Sending POST to /folders/{id}/personas/remove-batch
-  2. Backend logs:
-    - 🌐 BACKEND: POST /folders/{id}/personas/remove-batch endpoint hit
-    - 🌐 BACKEND: Raw request data: {persona_ids: [...]}
-    - And then all the detailed folder debugging logs with the emoji prefixes showing the remove operation
-
-  This should fix the issue where the backend wasn't receiving the request at all!
-
-⏺ Update Todos
-  ⎿  ☒ Add backend debugging for folder operations          
-     ☒ Fix persona folder_ids initialization
-     ☒ Debug ID matching between frontend and backend
-     ☒ Fix API endpoint for remove personas (DELETE to POST)
-     ☐ Test folder count calculation
-     ☐ Test remove personas functionality
-
-> now when I remove personas from folder I get this:
-
-  Removing personas from folder: 
-  Object { selectedFolder: "68960dc93fbb00cd1faecb05", selectedIds: (2) […], mongoIds: (2) […], folderName: "mc_test_1" }
-  index-BhZnhra6.js:549:18439
-  🌐 API removePersonasBatch: Sending POST to /folders/68960dc93fbb00cd1faecb05/personas/remove-batch with persona_ids: 
-  Array [ "689610e4c7f3eeaed15ebc2f", "689610e45072032668789a63" ]
-
-  but nothing in the backend logs
-
-  and it doesn't work
-  ⎿  API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.51: all messages must have non-empty content except for the optional final assistant message"}}
-
-> try again
-  ⎿  API Error: 400 {"type":"error","error":{"type":"invalid_request_error","message":"messages.51: all messages must have non-empty content except for the optional final assistant message"}}
-

backend/requirements.txt

@@ -1,15 +1,17 @@
-flask==2.2.3
-werkzeug==2.2.3
-flask-cors==3.0.10
-pymongo==4.3.3
-python-dotenv==1.0.0
-flask-jwt-extended==4.4.4
-bcrypt==4.0.1
-pydantic==1.10.7
+flask
+werkzeug
+flask-cors
+pymongo
+python-dotenv
+flask-jwt-extended
+bcrypt
+pydantic
 hypercorn
-google-generativeai==0.3.2
-openai>=1.0.0
-requests==2.31.0
+google-generativeai
+openai
+requests
 llama-cloud-services
-msal==1.24.1
-PyJWT==2.8.0
+msal
+PyJWT
+flask-socketio
+eventlet

backend/run.py

@@ -3,6 +3,14 @@ import subprocess
 import sys
 import tempfile
 
+# GPT-5 fix: Monkey patch BEFORE any other imports that might use threads/sockets
+try:
+    import eventlet
+    eventlet.monkey_patch()
+    print("✅ GPT-5 FIX: Early eventlet monkey patching applied")
+except ImportError:
+    print("⚠️ Eventlet not available for early monkey patching")
+
 # Set up temp directories FIRST, before any imports that might use temp files
 def setup_early_temp_directories():
     """Set up temp directories before Flask imports."""
@@ -40,43 +48,56 @@ from app.models.user import User
 # Create the Flask app
 flask_app = create_app()
 
-@flask_app.before_first_request
+# Initialize database on startup
 def initialize_database():
     # Create default user if it doesn't exist
     User.create_default_user()
 
-# Wrap Flask app for ASGI compatibility with hypercorn
-try:
-    from hypercorn.middleware import WSGIMiddleware
-    app = WSGIMiddleware(flask_app)
-except ImportError:
-    # Fallback for when hypercorn isn't installed yet
-    app = flask_app
+# Call initialization immediately
+with flask_app.app_context():
+    initialize_database()
+
+# For SocketIO, we need to use the socketio app directly
+app = flask_app
 
 if __name__ == '__main__':
-    # Check if hypercorn is available
+    # Check if we have SocketIO support and run with eventlet
     try:
-        import hypercorn
-    except ImportError:
-        print("Hypercorn not found. Installing it...")
-        subprocess.check_call([sys.executable, "-m", "pip", "install", "hypercorn"])
-    
-    # Start with hypercorn using command line arguments
-    cmd = [
-        sys.executable, "-m", "hypercorn",
-        "--bind", "0.0.0.0:5137",
-        "--workers", "4",
-        "--worker-class", "asyncio",
-        "--keep-alive", "65",
-        "--access-log", "/dev/null",
-        "--error-log", "-",
-        "--log-level", "info",
-        "run:app"
-    ]
-    
-    print("Starting Flask app with Hypercorn...")
-    try:
-        subprocess.run(cmd)
+        import eventlet
+        print("Starting Flask-SocketIO app with eventlet...")
+        print("Started Semblance back end service")
+        
+        # Run with SocketIO support - use the socketio instance to run the app
+        flask_app.socketio.run(
+            flask_app,
+            host='0.0.0.0',
+            port=5137,
+            debug=False,
+            use_reloader=False,
+            allow_unsafe_werkzeug=True
+        )
+        
+    except ImportError as e:
+        print("Eventlet not found. Installing it...")
+        subprocess.check_call([sys.executable, "-m", "pip", "install", "eventlet", "flask-socketio"])
+        
+        # Try again
+        try:
+            import eventlet
+            print("Started Semblance back end service")
+            flask_app.socketio.run(
+                flask_app,
+                host='0.0.0.0',
+                port=5137,
+                debug=False,
+                use_reloader=False,
+                allow_unsafe_werkzeug=True
+            )
+        except Exception as e:
+            print(f"Failed to start with SocketIO: {e}")
+            print("Falling back to regular Flask...")
+            print("Started Semblance back end service")
+            flask_app.run(host='0.0.0.0', port=5137, debug=False)
     except KeyboardInterrupt:
         print("\nShutting down...")
         sys.exit(0)

backend/test_websocket_cross_process.py

@@ -0,0 +1,109 @@
+#!/usr/bin/env python3
+"""
+Test script to demonstrate cross-process WebSocket emission issues.
+This simulates what happens when AI processing runs in separate asyncio context.
+"""
+
+import os
+import threading
+import time
+import asyncio
+from app import create_app
+from app.models.focus_group import emit_websocket_event
+
+def simulate_main_process():
+    """Simulate the main Flask/SocketIO process."""
+    print("=" * 50)
+    print("SIMULATING MAIN FLASK/SOCKETIO PROCESS")
+    print("=" * 50)
+    
+    # Create Flask app (this initializes WebSocket manager)
+    app = create_app()
+    
+    main_pid = os.getpid()
+    main_thread = threading.get_ident()
+    print(f"🔌 Main Process - PID: {main_pid}, Thread: {main_thread}")
+    
+    # Simulate WebSocket connection handling
+    print("🔌 WebSocket connections would be handled in this process/thread")
+    
+    return app
+
+def simulate_ai_processing():
+    """Simulate AI processing that emits WebSocket events."""
+    print("\n" + "=" * 50)
+    print("SIMULATING AI PROCESSING (SEPARATE CONTEXT)")
+    print("=" * 50)
+    
+    ai_pid = os.getpid()
+    ai_thread = threading.get_ident()
+    print(f"🤖 AI Process - PID: {ai_pid}, Thread: {ai_thread}")
+    
+    # Simulate emitting WebSocket events from AI processing
+    test_focus_group_id = "test_fg_123"
+    test_message_data = {
+        "id": "msg_456",
+        "content": "This is a test message from AI processing",
+        "sender_name": "AI Assistant",
+        "timestamp": time.time()
+    }
+    
+    print(f"🤖 AI attempting to emit WebSocket event...")
+    emit_websocket_event('message_update', test_focus_group_id, test_message_data)
+    print(f"🤖 AI emit completed")
+
+async def simulate_async_ai_processing():
+    """Simulate asyncio-based AI processing (like AutonomousConversationController)."""
+    print("\n" + "=" * 50)
+    print("SIMULATING ASYNCIO AI PROCESSING")
+    print("=" * 50)
+    
+    async_pid = os.getpid()
+    async_thread = threading.get_ident()
+    print(f"🔄 AsyncIO Process - PID: {async_pid}, Thread: {async_thread}")
+    
+    # Simulate async AI processing with WebSocket events
+    test_focus_group_id = "test_fg_async_789"
+    test_message_data = {
+        "id": "msg_async_101",
+        "content": "This is a test message from asyncio AI processing",
+        "sender_name": "Async AI Assistant",
+        "timestamp": time.time()
+    }
+    
+    print(f"🔄 AsyncIO AI attempting to emit WebSocket event...")
+    emit_websocket_event('message_update', test_focus_group_id, test_message_data)
+    print(f"🔄 AsyncIO AI emit completed")
+    
+    # Simulate processing delay
+    await asyncio.sleep(0.1)
+
+def main():
+    """Main test function."""
+    print("🧪 WEBSOCKET CROSS-PROCESS TEST")
+    print("This test demonstrates potential cross-process WebSocket emission issues")
+    print("identified by GPT-5 analysis.\n")
+    
+    # Step 1: Simulate main Flask/SocketIO process
+    app = simulate_main_process()
+    
+    # Step 2: Simulate AI processing in same thread
+    simulate_ai_processing()
+    
+    # Step 3: Simulate async AI processing
+    print("\n🔄 Running asyncio AI simulation...")
+    asyncio.run(simulate_async_ai_processing())
+    
+    print("\n" + "=" * 50)
+    print("TEST ANALYSIS")
+    print("=" * 50)
+    print("👀 Key observations to look for:")
+    print("1. Are all PID/Thread IDs the same?")
+    print("2. If different, this confirms cross-process emission issue")
+    print("3. WebSocket events emitted from different process won't reach clients")
+    print("4. This explains why AI mode messages don't appear in real-time")
+    
+    print("\n✅ Cross-process test completed")
+
+if __name__ == "__main__":
+    main()

dist/index.html

@@ -7,8 +7,8 @@
     <meta name="description" content="Lovable Generated Project" />
     <meta name="author" content="Lovable" />
     <meta property="og:image" content="/og-image.png" />
-    <script type="module" crossorigin src="/semblance/assets/index-DHXCQiw7.js"></script>
-    <link rel="stylesheet" crossorigin href="/semblance/assets/index-D7sAAnG7.css">
+    <script type="module" crossorigin src="/semblance/assets/index-_LzirAYA.js"></script>
+    <link rel="stylesheet" crossorigin href="/semblance/assets/index-BttT7ZR2.css">
   </head>
 
   <body>

node_modules/.package-lock.json

@@ -2594,6 +2594,12 @@
         "win32"
       ]
     },
+    "node_modules/@socket.io/component-emitter": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/@socket.io/component-emitter/-/component-emitter-3.1.2.tgz",
+      "integrity": "sha512-9BCxFwvbGg/RsZK9tjXd8s4UcwR0MWeFQ1XEKIQVVvAGJyINdrqKMcTRyLoK8Rse1GjzLV9cwjWV1olXRWEXVA==",
+      "license": "MIT"
+    },
     "node_modules/@swc/core": {
       "version": "1.7.39",
       "resolved": "https://registry.npmjs.org/@swc/core/-/core-1.7.39.tgz",
@@ -4195,7 +4201,6 @@
       "version": "4.3.7",
       "resolved": "https://registry.npmjs.org/debug/-/debug-4.3.7.tgz",
       "integrity": "sha512-Er2nc/H7RrMXZBFCEim6TCmMk02Z8vLC2Rbi1KEBggpo0fS6l0S1nnapwmIi3yW/+GOJap1Krg4w0Hg80oCqgQ==",
-      "dev": true,
       "license": "MIT",
       "dependencies": {
         "ms": "^2.1.3"
@@ -4320,6 +4325,28 @@
       "integrity": "sha512-L18DaJsXSUk2+42pv8mLs5jJT2hqFkFE4j21wOmgbUqsZ2hL72NsUU785g9RXgo3s0ZNgVl42TiHp3ZtOv/Vyg==",
       "license": "MIT"
     },
+    "node_modules/engine.io-client": {
+      "version": "6.6.3",
+      "resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-6.6.3.tgz",
+      "integrity": "sha512-T0iLjnyNWahNyv/lcjS2y4oE358tVS/SYQNxYXGAJ9/GLgH4VCvOQ/mhTjqU88mLZCQgiG8RIegFHYCdVC+j5w==",
+      "license": "MIT",
+      "dependencies": {
+        "@socket.io/component-emitter": "~3.1.0",
+        "debug": "~4.3.1",
+        "engine.io-parser": "~5.2.1",
+        "ws": "~8.17.1",
+        "xmlhttprequest-ssl": "~2.1.1"
+      }
+    },
+    "node_modules/engine.io-parser": {
+      "version": "5.2.3",
+      "resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-5.2.3.tgz",
+      "integrity": "sha512-HqD3yTBfnBxIrbnM1DoD6Pcq8NECnh8d4As1Qgh0z5Gg3jRRIqijury0CL3ghu/edArpUYiYqQiDUQBIs4np3Q==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
     "node_modules/es-define-property": {
       "version": "1.0.1",
       "resolved": "https://registry.npmjs.org/es-define-property/-/es-define-property-1.0.1.tgz",
@@ -5901,7 +5928,6 @@
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/ms/-/ms-2.1.3.tgz",
       "integrity": "sha512-6FlzubTLZG3J2a/NVCAleEhjzq5oxgHyaCU9yYXvcLsvoVaHJq/s5xXI6/XXP6tz7R9xAOtHnSO/tXtF3WRTlA==",
-      "dev": true,
       "license": "MIT"
     },
     "node_modules/mz": {
@@ -6760,6 +6786,34 @@
         "url": "https://github.com/sponsors/isaacs"
       }
     },
+    "node_modules/socket.io-client": {
+      "version": "4.8.1",
+      "resolved": "https://registry.npmjs.org/socket.io-client/-/socket.io-client-4.8.1.tgz",
+      "integrity": "sha512-hJVXfu3E28NmzGk8o1sHhN3om52tRvwYeidbj7xKy2eIIse5IoKX3USlS6Tqt3BHAtflLIkCQBkzVrEEfWUyYQ==",
+      "license": "MIT",
+      "dependencies": {
+        "@socket.io/component-emitter": "~3.1.0",
+        "debug": "~4.3.2",
+        "engine.io-client": "~6.6.1",
+        "socket.io-parser": "~4.2.4"
+      },
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
+    "node_modules/socket.io-parser": {
+      "version": "4.2.4",
+      "resolved": "https://registry.npmjs.org/socket.io-parser/-/socket.io-parser-4.2.4.tgz",
+      "integrity": "sha512-/GbIKmo8ioc+NIWIhwdecY0ge+qVBSMdgxGygevmdHj24bsfgtCmcUUcQ5ZzcylGFHsN3k4HB4Cgkl96KVnuew==",
+      "license": "MIT",
+      "dependencies": {
+        "@socket.io/component-emitter": "~3.1.0",
+        "debug": "~4.3.1"
+      },
+      "engines": {
+        "node": ">=10.0.0"
+      }
+    },
     "node_modules/sonner": {
       "version": "1.5.0",
       "resolved": "https://registry.npmjs.org/sonner/-/sonner-1.5.0.tgz",
@@ -7418,6 +7472,35 @@
         "url": "https://github.com/chalk/ansi-styles?sponsor=1"
       }
     },
+    "node_modules/ws": {
+      "version": "8.17.1",
+      "resolved": "https://registry.npmjs.org/ws/-/ws-8.17.1.tgz",
+      "integrity": "sha512-6XQFvXTkbfUOZOKKILFG1PDK2NDQs4azKQl26T0YS5CxqWLgXajbPZ+h4gZekJyRqFU8pvnbAbbs/3TgRPy+GQ==",
+      "license": "MIT",
+      "engines": {
+        "node": ">=10.0.0"
+      },
+      "peerDependencies": {
+        "bufferutil": "^4.0.1",
+        "utf-8-validate": ">=5.0.2"
+      },
+      "peerDependenciesMeta": {
+        "bufferutil": {
+          "optional": true
+        },
+        "utf-8-validate": {
+          "optional": true
+        }
+      }
+    },
+    "node_modules/xmlhttprequest-ssl": {
+      "version": "2.1.2",
+      "resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-2.1.2.tgz",
+      "integrity": "sha512-TEU+nJVUUnA4CYJFLvK5X9AOeH4KvDvhIfm0vV1GaQRtchnG0hgK5p8hw/xjv8cunWYCsiPCSDzObPyhEwq3KQ==",
+      "engines": {
+        "node": ">=0.4.0"
+      }
+    },
     "node_modules/yaml": {
       "version": "2.6.0",
       "resolved": "https://registry.npmjs.org/yaml/-/yaml-2.6.0.tgz",

node_modules/@socket.io/component-emitter/LICENSE

@@ -0,0 +1,24 @@
+(The MIT License)
+
+Copyright (c) 2014 Component contributors <dev@component.io>
+
+Permission is hereby granted, free of charge, to any person
+obtaining a copy of this software and associated documentation
+files (the "Software"), to deal in the Software without
+restriction, including without limitation the rights to use,
+copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the
+Software is furnished to do so, subject to the following
+conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
+OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
+HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.

node_modules/@socket.io/component-emitter/Readme.md

@@ -0,0 +1,79 @@
+# `@socket.io/component-emitter`
+
+  Event emitter component.
+
+This project is a fork of the [`component-emitter`](https://github.com/sindresorhus/component-emitter) project, with [Socket.IO](https://socket.io/)-specific TypeScript typings.
+
+## Installation
+
+```
+$ npm i @socket.io/component-emitter
+```
+
+## API
+
+### Emitter(obj)
+
+  The `Emitter` may also be used as a mixin. For example
+  a "plain" object may become an emitter, or you may
+  extend an existing prototype.
+
+  As an `Emitter` instance:
+
+```js
+import { Emitter } from '@socket.io/component-emitter';
+
+var emitter = new Emitter;
+emitter.emit('something');
+```
+
+  As a mixin:
+
+```js
+import { Emitter } from '@socket.io/component-emitter';
+
+var user = { name: 'tobi' };
+Emitter(user);
+
+user.emit('im a user');
+```
+
+  As a prototype mixin:
+
+```js
+import { Emitter } from '@socket.io/component-emitter';
+
+Emitter(User.prototype);
+```
+
+### Emitter#on(event, fn)
+
+  Register an `event` handler `fn`.
+
+### Emitter#once(event, fn)
+
+  Register a single-shot `event` handler `fn`,
+  removed immediately after it is invoked the
+  first time.
+
+### Emitter#off(event, fn)
+
+  * Pass `event` and `fn` to remove a listener.
+  * Pass `event` to remove all listeners on that event.
+  * Pass nothing to remove all listeners on all events.
+
+### Emitter#emit(event, ...)
+
+  Emit an `event` with variable option args.
+
+### Emitter#listeners(event)
+
+  Return an array of callbacks, or an empty array.
+
+### Emitter#hasListeners(event)
+
+  Check if this emitter has `event` handlers.
+
+## License
+
+MIT

node_modules/@socket.io/component-emitter/lib/cjs/index.d.ts

@@ -0,0 +1,179 @@
+/**
+ * An events map is an interface that maps event names to their value, which
+ * represents the type of the `on` listener.
+ */
+export interface EventsMap {
+    [event: string]: any;
+}
+
+/**
+ * The default events map, used if no EventsMap is given. Using this EventsMap
+ * is equivalent to accepting all event names, and any data.
+ */
+export interface DefaultEventsMap {
+    [event: string]: (...args: any[]) => void;
+}
+
+/**
+ * Returns a union type containing all the keys of an event map.
+ */
+export type EventNames<Map extends EventsMap> = keyof Map & (string | symbol);
+
+/** The tuple type representing the parameters of an event listener */
+export type EventParams<
+    Map extends EventsMap,
+    Ev extends EventNames<Map>
+    > = Parameters<Map[Ev]>;
+
+/**
+ * The event names that are either in ReservedEvents or in UserEvents
+ */
+export type ReservedOrUserEventNames<
+    ReservedEventsMap extends EventsMap,
+    UserEvents extends EventsMap
+    > = EventNames<ReservedEventsMap> | EventNames<UserEvents>;
+
+/**
+ * Type of a listener of a user event or a reserved event. If `Ev` is in
+ * `ReservedEvents`, the reserved event listener is returned.
+ */
+export type ReservedOrUserListener<
+    ReservedEvents extends EventsMap,
+    UserEvents extends EventsMap,
+    Ev extends ReservedOrUserEventNames<ReservedEvents, UserEvents>
+    > = FallbackToUntypedListener<
+    Ev extends EventNames<ReservedEvents>
+        ? ReservedEvents[Ev]
+        : Ev extends EventNames<UserEvents>
+        ? UserEvents[Ev]
+        : never
+    >;
+
+/**
+ * Returns an untyped listener type if `T` is `never`; otherwise, returns `T`.
+ *
+ * This is a hack to mitigate https://github.com/socketio/socket.io/issues/3833.
+ * Needed because of https://github.com/microsoft/TypeScript/issues/41778
+ */
+type FallbackToUntypedListener<T> = [T] extends [never]
+    ? (...args: any[]) => void | Promise<void>
+    : T;
+
+/**
+ * Strictly typed version of an `EventEmitter`. A `TypedEventEmitter` takes type
+ * parameters for mappings of event names to event data types, and strictly
+ * types method calls to the `EventEmitter` according to these event maps.
+ *
+ * @typeParam ListenEvents - `EventsMap` of user-defined events that can be
+ * listened to with `on` or `once`
+ * @typeParam EmitEvents - `EventsMap` of user-defined events that can be
+ * emitted with `emit`
+ * @typeParam ReservedEvents - `EventsMap` of reserved events, that can be
+ * emitted by socket.io with `emitReserved`, and can be listened to with
+ * `listen`.
+ */
+export class Emitter<
+    ListenEvents extends EventsMap,
+    EmitEvents extends EventsMap,
+    ReservedEvents extends EventsMap = {}
+    > {
+    /**
+     * Adds the `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     * @param listener Callback function
+     */
+    on<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
+        ev: Ev,
+        listener: ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>
+    ): this;
+
+    /**
+     * Adds a one-time `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     * @param listener Callback function
+     */
+    once<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
+        ev: Ev,
+        listener: ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>
+    ): this;
+
+    /**
+     * Removes the `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     * @param listener Callback function
+     */
+    off<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
+        ev?: Ev,
+        listener?: ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>
+    ): this;
+
+    /**
+     * Emits an event.
+     *
+     * @param ev Name of the event
+     * @param args Values to send to listeners of this event
+     */
+    emit<Ev extends EventNames<EmitEvents>>(
+        ev: Ev,
+        ...args: EventParams<EmitEvents, Ev>
+    ): this;
+
+    /**
+     * Emits a reserved event.
+     *
+     * This method is `protected`, so that only a class extending
+     * `StrictEventEmitter` can emit its own reserved events.
+     *
+     * @param ev Reserved event name
+     * @param args Arguments to emit along with the event
+     */
+    protected emitReserved<Ev extends EventNames<ReservedEvents>>(
+        ev: Ev,
+        ...args: EventParams<ReservedEvents, Ev>
+    ): this;
+
+    /**
+     * Returns the listeners listening to an event.
+     *
+     * @param event Event name
+     * @returns Array of listeners subscribed to `event`
+     */
+    listeners<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
+        event: Ev
+    ): ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>[];
+
+    /**
+     * Returns true if there is a listener for this event.
+     *
+     * @param event Event name
+     * @returns boolean
+     */
+    hasListeners<
+        Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>
+        >(event: Ev): boolean;
+
+    /**
+     * Removes the `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     * @param listener Callback function
+     */
+    removeListener<
+        Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>
+        >(
+        ev?: Ev,
+        listener?: ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>
+    ): this;
+
+    /**
+     * Removes all `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     */
+    removeAllListeners<
+        Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>
+        >(ev?: Ev): this;
+}

node_modules/@socket.io/component-emitter/lib/cjs/index.js

@@ -0,0 +1,176 @@
+
+/**
+ * Expose `Emitter`.
+ */
+
+exports.Emitter = Emitter;
+
+/**
+ * Initialize a new `Emitter`.
+ *
+ * @api public
+ */
+
+function Emitter(obj) {
+  if (obj) return mixin(obj);
+}
+
+/**
+ * Mixin the emitter properties.
+ *
+ * @param {Object} obj
+ * @return {Object}
+ * @api private
+ */
+
+function mixin(obj) {
+  for (var key in Emitter.prototype) {
+    obj[key] = Emitter.prototype[key];
+  }
+  return obj;
+}
+
+/**
+ * Listen on the given `event` with `fn`.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.on =
+Emitter.prototype.addEventListener = function(event, fn){
+  this._callbacks = this._callbacks || {};
+  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])
+    .push(fn);
+  return this;
+};
+
+/**
+ * Adds an `event` listener that will be invoked a single
+ * time then automatically removed.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.once = function(event, fn){
+  function on() {
+    this.off(event, on);
+    fn.apply(this, arguments);
+  }
+
+  on.fn = fn;
+  this.on(event, on);
+  return this;
+};
+
+/**
+ * Remove the given callback for `event` or all
+ * registered callbacks.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.off =
+Emitter.prototype.removeListener =
+Emitter.prototype.removeAllListeners =
+Emitter.prototype.removeEventListener = function(event, fn){
+  this._callbacks = this._callbacks || {};
+
+  // all
+  if (0 == arguments.length) {
+    this._callbacks = {};
+    return this;
+  }
+
+  // specific event
+  var callbacks = this._callbacks['$' + event];
+  if (!callbacks) return this;
+
+  // remove all handlers
+  if (1 == arguments.length) {
+    delete this._callbacks['$' + event];
+    return this;
+  }
+
+  // remove specific handler
+  var cb;
+  for (var i = 0; i < callbacks.length; i++) {
+    cb = callbacks[i];
+    if (cb === fn || cb.fn === fn) {
+      callbacks.splice(i, 1);
+      break;
+    }
+  }
+
+  // Remove event specific arrays for event types that no
+  // one is subscribed for to avoid memory leak.
+  if (callbacks.length === 0) {
+    delete this._callbacks['$' + event];
+  }
+
+  return this;
+};
+
+/**
+ * Emit `event` with the given args.
+ *
+ * @param {String} event
+ * @param {Mixed} ...
+ * @return {Emitter}
+ */
+
+Emitter.prototype.emit = function(event){
+  this._callbacks = this._callbacks || {};
+
+  var args = new Array(arguments.length - 1)
+    , callbacks = this._callbacks['$' + event];
+
+  for (var i = 1; i < arguments.length; i++) {
+    args[i - 1] = arguments[i];
+  }
+
+  if (callbacks) {
+    callbacks = callbacks.slice(0);
+    for (var i = 0, len = callbacks.length; i < len; ++i) {
+      callbacks[i].apply(this, args);
+    }
+  }
+
+  return this;
+};
+
+// alias used for reserved events (protected method)
+Emitter.prototype.emitReserved = Emitter.prototype.emit;
+
+/**
+ * Return array of callbacks for `event`.
+ *
+ * @param {String} event
+ * @return {Array}
+ * @api public
+ */
+
+Emitter.prototype.listeners = function(event){
+  this._callbacks = this._callbacks || {};
+  return this._callbacks['$' + event] || [];
+};
+
+/**
+ * Check if this emitter has `event` handlers.
+ *
+ * @param {String} event
+ * @return {Boolean}
+ * @api public
+ */
+
+Emitter.prototype.hasListeners = function(event){
+  return !! this.listeners(event).length;
+};

node_modules/@socket.io/component-emitter/lib/cjs/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "@socket.io/component-emitter",
+  "type": "commonjs"
+}

node_modules/@socket.io/component-emitter/lib/esm/index.d.ts

@@ -0,0 +1,179 @@
+/**
+ * An events map is an interface that maps event names to their value, which
+ * represents the type of the `on` listener.
+ */
+export interface EventsMap {
+    [event: string]: any;
+}
+
+/**
+ * The default events map, used if no EventsMap is given. Using this EventsMap
+ * is equivalent to accepting all event names, and any data.
+ */
+export interface DefaultEventsMap {
+    [event: string]: (...args: any[]) => void;
+}
+
+/**
+ * Returns a union type containing all the keys of an event map.
+ */
+export type EventNames<Map extends EventsMap> = keyof Map & (string | symbol);
+
+/** The tuple type representing the parameters of an event listener */
+export type EventParams<
+    Map extends EventsMap,
+    Ev extends EventNames<Map>
+    > = Parameters<Map[Ev]>;
+
+/**
+ * The event names that are either in ReservedEvents or in UserEvents
+ */
+export type ReservedOrUserEventNames<
+    ReservedEventsMap extends EventsMap,
+    UserEvents extends EventsMap
+    > = EventNames<ReservedEventsMap> | EventNames<UserEvents>;
+
+/**
+ * Type of a listener of a user event or a reserved event. If `Ev` is in
+ * `ReservedEvents`, the reserved event listener is returned.
+ */
+export type ReservedOrUserListener<
+    ReservedEvents extends EventsMap,
+    UserEvents extends EventsMap,
+    Ev extends ReservedOrUserEventNames<ReservedEvents, UserEvents>
+    > = FallbackToUntypedListener<
+    Ev extends EventNames<ReservedEvents>
+        ? ReservedEvents[Ev]
+        : Ev extends EventNames<UserEvents>
+        ? UserEvents[Ev]
+        : never
+    >;
+
+/**
+ * Returns an untyped listener type if `T` is `never`; otherwise, returns `T`.
+ *
+ * This is a hack to mitigate https://github.com/socketio/socket.io/issues/3833.
+ * Needed because of https://github.com/microsoft/TypeScript/issues/41778
+ */
+type FallbackToUntypedListener<T> = [T] extends [never]
+    ? (...args: any[]) => void | Promise<void>
+    : T;
+
+/**
+ * Strictly typed version of an `EventEmitter`. A `TypedEventEmitter` takes type
+ * parameters for mappings of event names to event data types, and strictly
+ * types method calls to the `EventEmitter` according to these event maps.
+ *
+ * @typeParam ListenEvents - `EventsMap` of user-defined events that can be
+ * listened to with `on` or `once`
+ * @typeParam EmitEvents - `EventsMap` of user-defined events that can be
+ * emitted with `emit`
+ * @typeParam ReservedEvents - `EventsMap` of reserved events, that can be
+ * emitted by socket.io with `emitReserved`, and can be listened to with
+ * `listen`.
+ */
+export class Emitter<
+    ListenEvents extends EventsMap,
+    EmitEvents extends EventsMap,
+    ReservedEvents extends EventsMap = {}
+    > {
+    /**
+     * Adds the `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     * @param listener Callback function
+     */
+    on<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
+        ev: Ev,
+        listener: ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>
+    ): this;
+
+    /**
+     * Adds a one-time `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     * @param listener Callback function
+     */
+    once<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
+        ev: Ev,
+        listener: ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>
+    ): this;
+
+    /**
+     * Removes the `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     * @param listener Callback function
+     */
+    off<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
+        ev?: Ev,
+        listener?: ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>
+    ): this;
+
+    /**
+     * Emits an event.
+     *
+     * @param ev Name of the event
+     * @param args Values to send to listeners of this event
+     */
+    emit<Ev extends EventNames<EmitEvents>>(
+        ev: Ev,
+        ...args: EventParams<EmitEvents, Ev>
+    ): this;
+
+    /**
+     * Emits a reserved event.
+     *
+     * This method is `protected`, so that only a class extending
+     * `StrictEventEmitter` can emit its own reserved events.
+     *
+     * @param ev Reserved event name
+     * @param args Arguments to emit along with the event
+     */
+    protected emitReserved<Ev extends EventNames<ReservedEvents>>(
+        ev: Ev,
+        ...args: EventParams<ReservedEvents, Ev>
+    ): this;
+
+    /**
+     * Returns the listeners listening to an event.
+     *
+     * @param event Event name
+     * @returns Array of listeners subscribed to `event`
+     */
+    listeners<Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>>(
+        event: Ev
+    ): ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>[];
+
+    /**
+     * Returns true if there is a listener for this event.
+     *
+     * @param event Event name
+     * @returns boolean
+     */
+    hasListeners<
+        Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>
+        >(event: Ev): boolean;
+
+    /**
+     * Removes the `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     * @param listener Callback function
+     */
+    removeListener<
+        Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>
+        >(
+        ev?: Ev,
+        listener?: ReservedOrUserListener<ReservedEvents, ListenEvents, Ev>
+    ): this;
+
+    /**
+     * Removes all `listener` function as an event listener for `ev`.
+     *
+     * @param ev Name of the event
+     */
+    removeAllListeners<
+        Ev extends ReservedOrUserEventNames<ReservedEvents, ListenEvents>
+        >(ev?: Ev): this;
+}

node_modules/@socket.io/component-emitter/lib/esm/index.js

@@ -0,0 +1,169 @@
+/**
+ * Initialize a new `Emitter`.
+ *
+ * @api public
+ */
+
+export function Emitter(obj) {
+  if (obj) return mixin(obj);
+}
+
+/**
+ * Mixin the emitter properties.
+ *
+ * @param {Object} obj
+ * @return {Object}
+ * @api private
+ */
+
+function mixin(obj) {
+  for (var key in Emitter.prototype) {
+    obj[key] = Emitter.prototype[key];
+  }
+  return obj;
+}
+
+/**
+ * Listen on the given `event` with `fn`.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.on =
+Emitter.prototype.addEventListener = function(event, fn){
+  this._callbacks = this._callbacks || {};
+  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])
+    .push(fn);
+  return this;
+};
+
+/**
+ * Adds an `event` listener that will be invoked a single
+ * time then automatically removed.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.once = function(event, fn){
+  function on() {
+    this.off(event, on);
+    fn.apply(this, arguments);
+  }
+
+  on.fn = fn;
+  this.on(event, on);
+  return this;
+};
+
+/**
+ * Remove the given callback for `event` or all
+ * registered callbacks.
+ *
+ * @param {String} event
+ * @param {Function} fn
+ * @return {Emitter}
+ * @api public
+ */
+
+Emitter.prototype.off =
+Emitter.prototype.removeListener =
+Emitter.prototype.removeAllListeners =
+Emitter.prototype.removeEventListener = function(event, fn){
+  this._callbacks = this._callbacks || {};
+
+  // all
+  if (0 == arguments.length) {
+    this._callbacks = {};
+    return this;
+  }
+
+  // specific event
+  var callbacks = this._callbacks['$' + event];
+  if (!callbacks) return this;
+
+  // remove all handlers
+  if (1 == arguments.length) {
+    delete this._callbacks['$' + event];
+    return this;
+  }
+
+  // remove specific handler
+  var cb;
+  for (var i = 0; i < callbacks.length; i++) {
+    cb = callbacks[i];
+    if (cb === fn || cb.fn === fn) {
+      callbacks.splice(i, 1);
+      break;
+    }
+  }
+
+  // Remove event specific arrays for event types that no
+  // one is subscribed for to avoid memory leak.
+  if (callbacks.length === 0) {
+    delete this._callbacks['$' + event];
+  }
+
+  return this;
+};
+
+/**
+ * Emit `event` with the given args.
+ *
+ * @param {String} event
+ * @param {Mixed} ...
+ * @return {Emitter}
+ */
+
+Emitter.prototype.emit = function(event){
+  this._callbacks = this._callbacks || {};
+
+  var args = new Array(arguments.length - 1)
+    , callbacks = this._callbacks['$' + event];
+
+  for (var i = 1; i < arguments.length; i++) {
+    args[i - 1] = arguments[i];
+  }
+
+  if (callbacks) {
+    callbacks = callbacks.slice(0);
+    for (var i = 0, len = callbacks.length; i < len; ++i) {
+      callbacks[i].apply(this, args);
+    }
+  }
+
+  return this;
+};
+
+// alias used for reserved events (protected method)
+Emitter.prototype.emitReserved = Emitter.prototype.emit;
+
+/**
+ * Return array of callbacks for `event`.
+ *
+ * @param {String} event
+ * @return {Array}
+ * @api public
+ */
+
+Emitter.prototype.listeners = function(event){
+  this._callbacks = this._callbacks || {};
+  return this._callbacks['$' + event] || [];
+};
+
+/**
+ * Check if this emitter has `event` handlers.
+ *
+ * @param {String} event
+ * @return {Boolean}
+ * @api public
+ */
+
+Emitter.prototype.hasListeners = function(event){
+  return !! this.listeners(event).length;
+};

node_modules/@socket.io/component-emitter/lib/esm/package.json

@@ -0,0 +1,4 @@
+{
+  "name": "@socket.io/component-emitter",
+  "type": "module"
+}

node_modules/@socket.io/component-emitter/package.json

@@ -0,0 +1,28 @@
+{
+  "name": "@socket.io/component-emitter",
+  "description": "Event emitter",
+  "version": "3.1.2",
+  "license": "MIT",
+  "devDependencies": {
+    "mocha": "*",
+    "should": "*"
+  },
+  "component": {
+    "scripts": {
+      "emitter/index.js": "index.js"
+    }
+  },
+  "main": "./lib/cjs/index.js",
+  "module": "./lib/esm/index.js",
+  "types": "./lib/cjs/index.d.ts",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/socketio/emitter.git"
+  },
+  "scripts": {
+    "test": "make test"
+  },
+  "files": [
+    "lib/"
+  ]
+}

node_modules/engine.io-client/LICENSE

@@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2014-present Guillermo Rauch and Socket.IO contributors
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

node_modules/engine.io-client/README.md

@@ -0,0 +1,331 @@
+
+# Engine.IO client
+
+[![Build Status](https://github.com/socketio/engine.io-client/workflows/CI/badge.svg?branch=main)](https://github.com/socketio/engine.io-client/actions)
+[![NPM version](https://badge.fury.io/js/engine.io-client.svg)](http://badge.fury.io/js/engine.io-client)
+
+This is the client for [Engine.IO](http://github.com/socketio/engine.io),
+the implementation of transport-based cross-browser/cross-device
+bi-directional communication layer for [Socket.IO](http://github.com/socketio/socket.io).
+
+## How to use
+
+### Standalone
+
+You can find an `engine.io.js` file in this repository, which is a
+standalone build you can use as follows:
+
+```html
+<script src="/path/to/engine.io.js"></script>
+<script>
+  // eio = Socket
+  const socket = eio('ws://localhost');
+  socket.on('open', () => {
+    socket.on('message', (data) => {});
+    socket.on('close', () => {});
+  });
+</script>
+```
+
+### With browserify
+
+Engine.IO is a commonjs module, which means you can include it by using
+`require` on the browser and package using [browserify](http://browserify.org/):
+
+1. install the client package
+
+    ```bash
+    $ npm install engine.io-client
+    ```
+
+1. write your app code
+
+    ```js
+    const { Socket } = require('engine.io-client');
+    const socket = new Socket('ws://localhost');
+    socket.on('open', () => {
+      socket.on('message', (data) => {});
+      socket.on('close', () => {});
+    });
+    ```
+
+1. build your app bundle
+
+    ```bash
+    $ browserify app.js > bundle.js
+    ```
+
+1. include on your page
+
+    ```html
+    <script src="/path/to/bundle.js"></script>
+    ```
+
+### Sending and receiving binary
+
+```html
+<script src="/path/to/engine.io.js"></script>
+<script>
+  const socket = eio('ws://localhost/');
+  socket.binaryType = 'blob';
+  socket.on('open', () => {
+    socket.send(new Int8Array(5));
+    socket.on('message', (blob) => {});
+    socket.on('close', () => {});
+  });
+</script>
+```
+
+### Node.JS
+
+Add `engine.io-client` to your `package.json` and then:
+
+```js
+const { Socket } = require('engine.io-client');
+const socket = new Socket('ws://localhost');
+socket.on('open', () => {
+  socket.on('message', (data) => {});
+  socket.on('close', () => {});
+});
+```
+
+### Node.js with certificates
+```js
+const opts = {
+  key: fs.readFileSync('test/fixtures/client.key'),
+  cert: fs.readFileSync('test/fixtures/client.crt'),
+  ca: fs.readFileSync('test/fixtures/ca.crt')
+};
+
+const { Socket } = require('engine.io-client');
+const socket = new Socket('ws://localhost', opts);
+socket.on('open', () => {
+  socket.on('message', (data) => {});
+  socket.on('close', () => {});
+});
+```
+
+### Node.js with extraHeaders
+```js
+const opts = {
+  extraHeaders: {
+    'X-Custom-Header-For-My-Project': 'my-secret-access-token',
+    'Cookie': 'user_session=NI2JlCKF90aE0sJZD9ZzujtdsUqNYSBYxzlTsvdSUe35ZzdtVRGqYFr0kdGxbfc5gUOkR9RGp20GVKza; path=/; expires=Tue, 07-Apr-2015 18:18:08 GMT; secure; HttpOnly'
+  }
+};
+
+const { Socket } = require('engine.io-client');
+const socket = new Socket('ws://localhost', opts);
+socket.on('open', () => {
+  socket.on('message', (data) => {});
+  socket.on('close', () => {});
+});
+```
+
+In the browser, the [WebSocket](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket) object does not support additional headers.
+In case you want to add some headers as part of some authentication mechanism, you can use the `transportOptions` attribute.
+Please note that in this case the headers won't be sent in the WebSocket upgrade request.
+
+```js
+// WILL NOT WORK in the browser
+const socket = new Socket('http://localhost', {
+  extraHeaders: {
+    'X-Custom-Header-For-My-Project': 'will not be sent'
+  }
+});
+// WILL NOT WORK
+const socket = new Socket('http://localhost', {
+  transports: ['websocket'], // polling is disabled
+  transportOptions: {
+    polling: {
+      extraHeaders: {
+        'X-Custom-Header-For-My-Project': 'will not be sent'
+      }
+    }
+  }
+});
+// WILL WORK
+const socket = new Socket('http://localhost', {
+  transports: ['polling', 'websocket'],
+  transportOptions: {
+    polling: {
+      extraHeaders: {
+        'X-Custom-Header-For-My-Project': 'will be used'
+      }
+    }
+  }
+});
+```
+
+## Features
+
+- Lightweight
+- Runs on browser and node.js seamlessly
+- Transports are independent of `Engine`
+  - Easy to debug
+  - Easy to unit test
+- Runs inside HTML5 WebWorker
+- Can send and receive binary data
+  - Receives as ArrayBuffer or Blob when in browser, and Buffer or ArrayBuffer
+    in Node
+  - When XHR2 or WebSockets are used, binary is emitted directly. Otherwise
+    binary is encoded into base64 strings, and decoded when binary types are
+    supported.
+  - With browsers that don't support ArrayBuffer, an object { base64: true,
+    data: dataAsBase64String } is emitted on the `message` event.
+
+## API
+
+### Socket
+
+The client class. Mixes in [Emitter](http://github.com/component/emitter).
+Exposed as `eio` in the browser standalone build.
+
+#### Properties
+
+- `protocol` _(Number)_: protocol revision number
+- `binaryType` _(String)_ : can be set to 'arraybuffer' or 'blob' in browsers,
+  and `buffer` or `arraybuffer` in Node. Blob is only used in browser if it's
+  supported.
+
+#### Events
+
+- `open`
+  - Fired upon successful connection.
+- `message`
+  - Fired when data is received from the server.
+  - **Arguments**
+    - `String` | `ArrayBuffer`: utf-8 encoded data or ArrayBuffer containing
+      binary data
+- `close`
+  - Fired upon disconnection. In compliance with the WebSocket API spec, this event may be
+    fired even if the `open` event does not occur (i.e. due to connection error or `close()`).
+- `error`
+  - Fired when an error occurs.
+- `flush`
+  - Fired upon completing a buffer flush
+- `drain`
+  - Fired after `drain` event of transport if writeBuffer is empty
+- `upgradeError`
+  - Fired if an error occurs with a transport we're trying to upgrade to.
+- `upgrade`
+  - Fired upon upgrade success, after the new transport is set
+- `ping`
+  - Fired upon receiving a ping packet.
+- `pong`
+  - Fired upon _flushing_ a pong packet (ie: actual packet write out)
+
+#### Methods
+
+- **constructor**
+    - Initializes the client
+    - **Parameters**
+      - `String` uri
+      - `Object`: optional, options object
+    - **Options**
+      - `agent` (`http.Agent`): `http.Agent` to use, defaults to `false` (NodeJS only)
+      - `upgrade` (`Boolean`): defaults to true, whether the client should try
+      to upgrade the transport from long-polling to something better.
+      - `forceBase64` (`Boolean`): forces base 64 encoding for polling transport even when XHR2 responseType is available and WebSocket even if the used standard supports binary.
+      - `withCredentials` (`Boolean`): defaults to `false`, whether to include credentials (cookies, authorization headers, TLS client certificates, etc.) with cross-origin XHR polling requests.
+      - `timestampRequests` (`Boolean`): whether to add the timestamp with each
+        transport request. Note: polling requests are always stamped unless this
+        option is explicitly set to `false` (`false`)
+      - `timestampParam` (`String`): timestamp parameter (`t`)
+      - `path` (`String`): path to connect to, default is `/engine.io`
+      - `transports` (`Array`): a list of transports to try (in order).
+      Defaults to `['polling', 'websocket', 'webtransport']`. `Engine`
+      always attempts to connect directly with the first one, provided the
+      feature detection test for it passes.
+      - `transportOptions` (`Object`): hash of options, indexed by transport name, overriding the common options for the given transport
+      - `rememberUpgrade` (`Boolean`): defaults to false.
+        If true and if the previous websocket connection to the server succeeded,
+        the connection attempt will bypass the normal upgrade process and will initially
+        try websocket. A connection attempt following a transport error will use the
+        normal upgrade process. It is recommended you turn this on only when using
+        SSL/TLS connections, or if you know that your network does not block websockets.
+      - `pfx` (`String`|`Buffer`): Certificate, Private key and CA certificates to use for SSL. Can be used in Node.js client environment to manually specify certificate information.
+      - `key` (`String`): Private key to use for SSL. Can be used in Node.js client environment to manually specify certificate information.
+      - `passphrase` (`String`): A string of passphrase for the private key or pfx. Can be used in Node.js client environment to manually specify certificate information.
+      - `cert` (`String`): Public x509 certificate to use. Can be used in Node.js client environment to manually specify certificate information.
+      - `ca` (`String`|`Array`): An authority certificate or array of authority certificates to check the remote host against.. Can be used in Node.js client environment to manually specify certificate information.
+      - `ciphers` (`String`): A string describing the ciphers to use or exclude. Consult the [cipher format list](http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT) for details on the format. Can be used in Node.js client environment to manually specify certificate information.
+      - `rejectUnauthorized` (`Boolean`): If true, the server certificate is verified against the list of supplied CAs. An 'error' event is emitted if verification fails. Verification happens at the connection level, before the HTTP request is sent. Can be used in Node.js client environment to manually specify certificate information.
+      - `perMessageDeflate` (`Object|Boolean`): parameters of the WebSocket permessage-deflate extension
+        (see [ws module](https://github.com/einaros/ws) api docs). Set to `false` to disable. (`true`)
+        - `threshold` (`Number`): data is compressed only if the byte size is above this value. This option is ignored on the browser. (`1024`)
+      - `extraHeaders` (`Object`): Headers that will be passed for each request to the server (via xhr-polling and via websockets). These values then can be used during handshake or for special proxies. Can only be used in Node.js client environment.
+      - `localAddress` (`String`): the local IP address to connect to
+      - `autoUnref` (`Boolean`): whether the transport should be `unref`'d upon creation. This calls `unref` on the underlying timers and sockets so that the program is allowed to exit if they are the only timers/sockets in the event system (Node.js only)
+      - `useNativeTimers` (`Boolean`): Whether to always use the native timeouts. This allows the client to reconnect when the native timeout functions are overridden, such as when mock clocks are installed with [`@sinonjs/fake-timers`](https://github.com/sinonjs/fake-timers).
+    - **Polling-only options**
+      - `requestTimeout` (`Number`): Timeout for xhr-polling requests in milliseconds (`0`)
+    - **Websocket-only options**
+      - `protocols` (`Array`): a list of subprotocols (see [MDN reference](https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Writing_WebSocket_servers#Subprotocols))
+      - `closeOnBeforeunload` (`Boolean`): whether to silently close the connection when the [`beforeunload`](https://developer.mozilla.org/en-US/docs/Web/API/Window/beforeunload_event) event is emitted in the browser (defaults to `false`)
+- `send`
+    - Sends a message to the server
+    - **Parameters**
+      - `String` | `ArrayBuffer` | `ArrayBufferView` | `Blob`: data to send
+      - `Object`: optional, options object
+      - `Function`: optional, callback upon `drain`
+    - **Options**
+      - `compress` (`Boolean`): whether to compress sending data. This option is ignored and forced to be `true` on the browser. (`true`)
+- `close`
+    - Disconnects the client.
+
+### Transport
+
+The transport class. Private. _Inherits from EventEmitter_.
+
+#### Events
+
+- `poll`: emitted by polling transports upon starting a new request
+- `pollComplete`: emitted by polling transports upon completing a request
+- `drain`: emitted by polling transports upon a buffer drain
+
+## Tests
+
+`engine.io-client` is used to test
+[engine](http://github.com/socketio/engine.io). Running the `engine.io`
+test suite ensures the client works and vice-versa.
+
+Browser tests are run using [zuul](https://github.com/defunctzombie/zuul). You can
+run the tests locally using the following command.
+
+```
+./node_modules/.bin/zuul --local 8080 -- test/index.js
+```
+
+Additionally, `engine.io-client` has a standalone test suite you can run
+with `make test` which will run node.js and browser tests. You must have zuul setup with
+a saucelabs account.
+
+## Support
+
+The support channels for `engine.io-client` are the same as `socket.io`:
+  - irc.freenode.net **#socket.io**
+  - [Google Groups](http://groups.google.com/group/socket_io)
+  - [Website](http://socket.io)
+
+## Development
+
+To contribute patches, run tests or benchmarks, make sure to clone the
+repository:
+
+```bash
+git clone git://github.com/socketio/engine.io-client.git
+```
+
+Then:
+
+```bash
+cd engine.io-client
+npm install
+```
+
+See the `Tests` section above for how to run tests before submitting any patches.
+
+## License
+
+MIT - Copyright (c) 2014 Automattic, Inc.

node_modules/engine.io-client/build/cjs/browser-entrypoint.d.ts

@@ -0,0 +1,3 @@
+import { Socket } from "./socket.js";
+declare const _default: (uri: any, opts: any) => Socket;
+export default _default;

node_modules/engine.io-client/build/cjs/browser-entrypoint.js

@@ -0,0 +1,4 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+const socket_js_1 = require("./socket.js");
+exports.default = (uri, opts) => new socket_js_1.Socket(uri, opts);

node_modules/engine.io-client/build/cjs/contrib/has-cors.d.ts

@@ -0,0 +1 @@
+export declare const hasCORS: boolean;

node_modules/engine.io-client/build/cjs/contrib/has-cors.js

@@ -0,0 +1,14 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.hasCORS = void 0;
+// imported from https://github.com/component/has-cors
+let value = false;
+try {
+    value = typeof XMLHttpRequest !== 'undefined' &&
+        'withCredentials' in new XMLHttpRequest();
+}
+catch (err) {
+    // if XMLHttp support is disabled in IE then it will throw
+    // when trying to create
+}
+exports.hasCORS = value;

node_modules/engine.io-client/build/cjs/contrib/parseqs.d.ts

@@ -0,0 +1,15 @@
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+export declare function encode(obj: any): string;
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+export declare function decode(qs: any): {};

node_modules/engine.io-client/build/cjs/contrib/parseqs.js

@@ -0,0 +1,38 @@
+"use strict";
+// imported from https://github.com/galkn/querystring
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.encode = encode;
+exports.decode = decode;
+function encode(obj) {
+    let str = '';
+    for (let i in obj) {
+        if (obj.hasOwnProperty(i)) {
+            if (str.length)
+                str += '&';
+            str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
+        }
+    }
+    return str;
+}
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+function decode(qs) {
+    let qry = {};
+    let pairs = qs.split('&');
+    for (let i = 0, l = pairs.length; i < l; i++) {
+        let pair = pairs[i].split('=');
+        qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
+    }
+    return qry;
+}

node_modules/engine.io-client/build/cjs/contrib/parseuri.d.ts

@@ -0,0 +1 @@
+export declare function parse(str: string): any;

node_modules/engine.io-client/build/cjs/contrib/parseuri.js

@@ -0,0 +1,67 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.parse = parse;
+// imported from https://github.com/galkn/parseuri
+/**
+ * Parses a URI
+ *
+ * Note: we could also have used the built-in URL object, but it isn't supported on all platforms.
+ *
+ * See:
+ * - https://developer.mozilla.org/en-US/docs/Web/API/URL
+ * - https://caniuse.com/url
+ * - https://www.rfc-editor.org/rfc/rfc3986#appendix-B
+ *
+ * History of the parse() method:
+ * - first commit: https://github.com/socketio/socket.io-client/commit/4ee1d5d94b3906a9c052b459f1a818b15f38f91c
+ * - export into its own module: https://github.com/socketio/engine.io-client/commit/de2c561e4564efeb78f1bdb1ba39ef81b2822cb3
+ * - reimport: https://github.com/socketio/engine.io-client/commit/df32277c3f6d622eec5ed09f493cae3f3391d242
+ *
+ * @author Steven Levithan <stevenlevithan.com> (MIT license)
+ * @api private
+ */
+const re = /^(?:(?![^:@\/?#]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@\/?#]*)(?::([^:@\/?#]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
+const parts = [
+    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
+];
+function parse(str) {
+    if (str.length > 8000) {
+        throw "URI too long";
+    }
+    const src = str, b = str.indexOf('['), e = str.indexOf(']');
+    if (b != -1 && e != -1) {
+        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
+    }
+    let m = re.exec(str || ''), uri = {}, i = 14;
+    while (i--) {
+        uri[parts[i]] = m[i] || '';
+    }
+    if (b != -1 && e != -1) {
+        uri.source = src;
+        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
+        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
+        uri.ipv6uri = true;
+    }
+    uri.pathNames = pathNames(uri, uri['path']);
+    uri.queryKey = queryKey(uri, uri['query']);
+    return uri;
+}
+function pathNames(obj, path) {
+    const regx = /\/{2,9}/g, names = path.replace(regx, "/").split("/");
+    if (path.slice(0, 1) == '/' || path.length === 0) {
+        names.splice(0, 1);
+    }
+    if (path.slice(-1) == '/') {
+        names.splice(names.length - 1, 1);
+    }
+    return names;
+}
+function queryKey(uri, query) {
+    const data = {};
+    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
+        if ($1) {
+            data[$1] = $2;
+        }
+    });
+    return data;
+}

node_modules/engine.io-client/build/cjs/globals.d.ts

@@ -0,0 +1,4 @@
+export declare const nextTick: (cb: any, setTimeoutFn: any) => any;
+export declare const globalThisShim: any;
+export declare const defaultBinaryType = "arraybuffer";
+export declare function createCookieJar(): void;

node_modules/engine.io-client/build/cjs/globals.js

@@ -0,0 +1,26 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.defaultBinaryType = exports.globalThisShim = exports.nextTick = void 0;
+exports.createCookieJar = createCookieJar;
+exports.nextTick = (() => {
+    const isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function";
+    if (isPromiseAvailable) {
+        return (cb) => Promise.resolve().then(cb);
+    }
+    else {
+        return (cb, setTimeoutFn) => setTimeoutFn(cb, 0);
+    }
+})();
+exports.globalThisShim = (() => {
+    if (typeof self !== "undefined") {
+        return self;
+    }
+    else if (typeof window !== "undefined") {
+        return window;
+    }
+    else {
+        return Function("return this")();
+    }
+})();
+exports.defaultBinaryType = "arraybuffer";
+function createCookieJar() { }

node_modules/engine.io-client/build/cjs/globals.node.d.ts

@@ -0,0 +1,21 @@
+export declare const nextTick: (callback: Function, ...args: any[]) => void;
+export declare const globalThisShim: typeof globalThis;
+export declare const defaultBinaryType = "nodebuffer";
+export declare function createCookieJar(): CookieJar;
+interface Cookie {
+    name: string;
+    value: string;
+    expires?: Date;
+}
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+ */
+export declare function parse(setCookieString: string): Cookie;
+export declare class CookieJar {
+    private _cookies;
+    parseCookies(values: string[]): void;
+    get cookies(): IterableIterator<[string, Cookie]>;
+    addCookies(xhr: any): void;
+    appendCookies(headers: Headers): void;
+}
+export {};

node_modules/engine.io-client/build/cjs/globals.node.js

@@ -0,0 +1,97 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CookieJar = exports.defaultBinaryType = exports.globalThisShim = exports.nextTick = void 0;
+exports.createCookieJar = createCookieJar;
+exports.parse = parse;
+exports.nextTick = process.nextTick;
+exports.globalThisShim = global;
+exports.defaultBinaryType = "nodebuffer";
+function createCookieJar() {
+    return new CookieJar();
+}
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+ */
+function parse(setCookieString) {
+    const parts = setCookieString.split("; ");
+    const i = parts[0].indexOf("=");
+    if (i === -1) {
+        return;
+    }
+    const name = parts[0].substring(0, i).trim();
+    if (!name.length) {
+        return;
+    }
+    let value = parts[0].substring(i + 1).trim();
+    if (value.charCodeAt(0) === 0x22) {
+        // remove double quotes
+        value = value.slice(1, -1);
+    }
+    const cookie = {
+        name,
+        value,
+    };
+    for (let j = 1; j < parts.length; j++) {
+        const subParts = parts[j].split("=");
+        if (subParts.length !== 2) {
+            continue;
+        }
+        const key = subParts[0].trim();
+        const value = subParts[1].trim();
+        switch (key) {
+            case "Expires":
+                cookie.expires = new Date(value);
+                break;
+            case "Max-Age":
+                const expiration = new Date();
+                expiration.setUTCSeconds(expiration.getUTCSeconds() + parseInt(value, 10));
+                cookie.expires = expiration;
+                break;
+            default:
+            // ignore other keys
+        }
+    }
+    return cookie;
+}
+class CookieJar {
+    constructor() {
+        this._cookies = new Map();
+    }
+    parseCookies(values) {
+        if (!values) {
+            return;
+        }
+        values.forEach((value) => {
+            const parsed = parse(value);
+            if (parsed) {
+                this._cookies.set(parsed.name, parsed);
+            }
+        });
+    }
+    get cookies() {
+        const now = Date.now();
+        this._cookies.forEach((cookie, name) => {
+            var _a;
+            if (((_a = cookie.expires) === null || _a === void 0 ? void 0 : _a.getTime()) < now) {
+                this._cookies.delete(name);
+            }
+        });
+        return this._cookies.entries();
+    }
+    addCookies(xhr) {
+        const cookies = [];
+        for (const [name, cookie] of this.cookies) {
+            cookies.push(`${name}=${cookie.value}`);
+        }
+        if (cookies.length) {
+            xhr.setDisableHeaderCheck(true);
+            xhr.setRequestHeader("cookie", cookies.join("; "));
+        }
+    }
+    appendCookies(headers) {
+        for (const [name, cookie] of this.cookies) {
+            headers.append("cookie", `${name}=${cookie.value}`);
+        }
+    }
+}
+exports.CookieJar = CookieJar;

node_modules/engine.io-client/build/cjs/index.d.ts

@@ -0,0 +1,15 @@
+import { Socket } from "./socket.js";
+export { Socket };
+export { SocketOptions, SocketWithoutUpgrade, SocketWithUpgrade, } from "./socket.js";
+export declare const protocol: number;
+export { Transport, TransportError } from "./transport.js";
+export { transports } from "./transports/index.js";
+export { installTimerFunctions } from "./util.js";
+export { parse } from "./contrib/parseuri.js";
+export { nextTick } from "./globals.node.js";
+export { Fetch } from "./transports/polling-fetch.js";
+export { XHR as NodeXHR } from "./transports/polling-xhr.node.js";
+export { XHR } from "./transports/polling-xhr.js";
+export { WS as NodeWebSocket } from "./transports/websocket.node.js";
+export { WS as WebSocket } from "./transports/websocket.js";
+export { WT as WebTransport } from "./transports/webtransport.js";

node_modules/engine.io-client/build/cjs/index.js

@@ -0,0 +1,32 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WebTransport = exports.WebSocket = exports.NodeWebSocket = exports.XHR = exports.NodeXHR = exports.Fetch = exports.nextTick = exports.parse = exports.installTimerFunctions = exports.transports = exports.TransportError = exports.Transport = exports.protocol = exports.SocketWithUpgrade = exports.SocketWithoutUpgrade = exports.Socket = void 0;
+const socket_js_1 = require("./socket.js");
+Object.defineProperty(exports, "Socket", { enumerable: true, get: function () { return socket_js_1.Socket; } });
+var socket_js_2 = require("./socket.js");
+Object.defineProperty(exports, "SocketWithoutUpgrade", { enumerable: true, get: function () { return socket_js_2.SocketWithoutUpgrade; } });
+Object.defineProperty(exports, "SocketWithUpgrade", { enumerable: true, get: function () { return socket_js_2.SocketWithUpgrade; } });
+exports.protocol = socket_js_1.Socket.protocol;
+var transport_js_1 = require("./transport.js");
+Object.defineProperty(exports, "Transport", { enumerable: true, get: function () { return transport_js_1.Transport; } });
+Object.defineProperty(exports, "TransportError", { enumerable: true, get: function () { return transport_js_1.TransportError; } });
+var index_js_1 = require("./transports/index.js");
+Object.defineProperty(exports, "transports", { enumerable: true, get: function () { return index_js_1.transports; } });
+var util_js_1 = require("./util.js");
+Object.defineProperty(exports, "installTimerFunctions", { enumerable: true, get: function () { return util_js_1.installTimerFunctions; } });
+var parseuri_js_1 = require("./contrib/parseuri.js");
+Object.defineProperty(exports, "parse", { enumerable: true, get: function () { return parseuri_js_1.parse; } });
+var globals_node_js_1 = require("./globals.node.js");
+Object.defineProperty(exports, "nextTick", { enumerable: true, get: function () { return globals_node_js_1.nextTick; } });
+var polling_fetch_js_1 = require("./transports/polling-fetch.js");
+Object.defineProperty(exports, "Fetch", { enumerable: true, get: function () { return polling_fetch_js_1.Fetch; } });
+var polling_xhr_node_js_1 = require("./transports/polling-xhr.node.js");
+Object.defineProperty(exports, "NodeXHR", { enumerable: true, get: function () { return polling_xhr_node_js_1.XHR; } });
+var polling_xhr_js_1 = require("./transports/polling-xhr.js");
+Object.defineProperty(exports, "XHR", { enumerable: true, get: function () { return polling_xhr_js_1.XHR; } });
+var websocket_node_js_1 = require("./transports/websocket.node.js");
+Object.defineProperty(exports, "NodeWebSocket", { enumerable: true, get: function () { return websocket_node_js_1.WS; } });
+var websocket_js_1 = require("./transports/websocket.js");
+Object.defineProperty(exports, "WebSocket", { enumerable: true, get: function () { return websocket_js_1.WS; } });
+var webtransport_js_1 = require("./transports/webtransport.js");
+Object.defineProperty(exports, "WebTransport", { enumerable: true, get: function () { return webtransport_js_1.WT; } });

node_modules/engine.io-client/build/cjs/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "engine.io-client",
+  "type": "commonjs",
+  "browser": {
+    "ws": false,
+    "./transports/polling-xhr.node.js": "./transports/polling-xhr.js",
+    "./transports/websocket.node.js": "./transports/websocket.js",
+    "./globals.node.js": "./globals.js"
+  }
+}

node_modules/engine.io-client/build/cjs/socket.d.ts

@@ -0,0 +1,482 @@
+import { Emitter } from "@socket.io/component-emitter";
+import type { Packet, BinaryType, RawData } from "engine.io-parser";
+import { CloseDetails, Transport } from "./transport.js";
+import { CookieJar } from "./globals.node.js";
+export interface SocketOptions {
+    /**
+     * The host that we're connecting to. Set from the URI passed when connecting
+     */
+    host?: string;
+    /**
+     * The hostname for our connection. Set from the URI passed when connecting
+     */
+    hostname?: string;
+    /**
+     * If this is a secure connection. Set from the URI passed when connecting
+     */
+    secure?: boolean;
+    /**
+     * The port for our connection. Set from the URI passed when connecting
+     */
+    port?: string | number;
+    /**
+     * Any query parameters in our uri. Set from the URI passed when connecting
+     */
+    query?: {
+        [key: string]: any;
+    };
+    /**
+     * `http.Agent` to use, defaults to `false` (NodeJS only)
+     *
+     * Note: the type should be "undefined | http.Agent | https.Agent | false", but this would break browser-only clients.
+     *
+     * @see https://nodejs.org/api/http.html#httprequestoptions-callback
+     */
+    agent?: string | boolean;
+    /**
+     * Whether the client should try to upgrade the transport from
+     * long-polling to something better.
+     * @default true
+     */
+    upgrade?: boolean;
+    /**
+     * Forces base 64 encoding for polling transport even when XHR2
+     * responseType is available and WebSocket even if the used standard
+     * supports binary.
+     */
+    forceBase64?: boolean;
+    /**
+     * The param name to use as our timestamp key
+     * @default 't'
+     */
+    timestampParam?: string;
+    /**
+     * Whether to add the timestamp with each transport request. Note: this
+     * is ignored if the browser is IE or Android, in which case requests
+     * are always stamped
+     * @default false
+     */
+    timestampRequests?: boolean;
+    /**
+     * A list of transports to try (in order). Engine.io always attempts to
+     * connect directly with the first one, provided the feature detection test
+     * for it passes.
+     *
+     * @default ['polling','websocket', 'webtransport']
+     */
+    transports?: ("polling" | "websocket" | "webtransport" | string)[] | TransportCtor[];
+    /**
+     * Whether all the transports should be tested, instead of just the first one.
+     *
+     * If set to `true`, the client will first try to connect with HTTP long-polling, and then with WebSocket in case of
+     * failure, and finally with WebTransport if the previous attempts have failed.
+     *
+     * If set to `false` (default), if the connection with HTTP long-polling fails, then the client will not test the
+     * other transports and will abort the connection.
+     *
+     * @default false
+     */
+    tryAllTransports?: boolean;
+    /**
+     * If true and if the previous websocket connection to the server succeeded,
+     * the connection attempt will bypass the normal upgrade process and will
+     * initially try websocket. A connection attempt following a transport error
+     * will use the normal upgrade process. It is recommended you turn this on
+     * only when using SSL/TLS connections, or if you know that your network does
+     * not block websockets.
+     * @default false
+     */
+    rememberUpgrade?: boolean;
+    /**
+     * Timeout for xhr-polling requests in milliseconds (0) (only for polling transport)
+     */
+    requestTimeout?: number;
+    /**
+     * Transport options for Node.js client (headers etc)
+     */
+    transportOptions?: Object;
+    /**
+     * (SSL) Certificate, Private key and CA certificates to use for SSL.
+     * Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    pfx?: string;
+    /**
+     * (SSL) Private key to use for SSL. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    key?: string;
+    /**
+     * (SSL) A string or passphrase for the private key or pfx. Can be
+     * used in Node.js client environment to manually specify certificate
+     * information.
+     */
+    passphrase?: string;
+    /**
+     * (SSL) Public x509 certificate to use. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    cert?: string;
+    /**
+     * (SSL) An authority certificate or array of authority certificates to
+     * check the remote host against.. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    ca?: string | string[];
+    /**
+     * (SSL) A string describing the ciphers to use or exclude. Consult the
+     * [cipher format list]
+     * (http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT) for
+     * details on the format.. Can be used in Node.js client environment to
+     * manually specify certificate information.
+     */
+    ciphers?: string;
+    /**
+     * (SSL) If true, the server certificate is verified against the list of
+     * supplied CAs. An 'error' event is emitted if verification fails.
+     * Verification happens at the connection level, before the HTTP request
+     * is sent. Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    rejectUnauthorized?: boolean;
+    /**
+     * Headers that will be passed for each request to the server (via xhr-polling and via websockets).
+     * These values then can be used during handshake or for special proxies.
+     */
+    extraHeaders?: {
+        [header: string]: string;
+    };
+    /**
+     * Whether to include credentials (cookies, authorization headers, TLS
+     * client certificates, etc.) with cross-origin XHR polling requests
+     * @default false
+     */
+    withCredentials?: boolean;
+    /**
+     * Whether to automatically close the connection whenever the beforeunload event is received.
+     * @default false
+     */
+    closeOnBeforeunload?: boolean;
+    /**
+     * Whether to always use the native timeouts. This allows the client to
+     * reconnect when the native timeout functions are overridden, such as when
+     * mock clocks are installed.
+     * @default false
+     */
+    useNativeTimers?: boolean;
+    /**
+     * Whether the heartbeat timer should be unref'ed, in order not to keep the Node.js event loop active.
+     *
+     * @see https://nodejs.org/api/timers.html#timeoutunref
+     * @default false
+     */
+    autoUnref?: boolean;
+    /**
+     * parameters of the WebSocket permessage-deflate extension (see ws module api docs). Set to false to disable.
+     * @default false
+     */
+    perMessageDeflate?: {
+        threshold: number;
+    };
+    /**
+     * The path to get our client file from, in the case of the server
+     * serving it
+     * @default '/engine.io'
+     */
+    path?: string;
+    /**
+     * Whether we should add a trailing slash to the request path.
+     * @default true
+     */
+    addTrailingSlash?: boolean;
+    /**
+     * Either a single protocol string or an array of protocol strings. These strings are used to indicate sub-protocols,
+     * so that a single server can implement multiple WebSocket sub-protocols (for example, you might want one server to
+     * be able to handle different types of interactions depending on the specified protocol)
+     * @default []
+     */
+    protocols?: string | string[];
+}
+type TransportCtor = {
+    new (o: any): Transport;
+};
+type BaseSocketOptions = Omit<SocketOptions, "transports"> & {
+    transports: TransportCtor[];
+};
+interface HandshakeData {
+    sid: string;
+    upgrades: string[];
+    pingInterval: number;
+    pingTimeout: number;
+    maxPayload: number;
+}
+interface SocketReservedEvents {
+    open: () => void;
+    handshake: (data: HandshakeData) => void;
+    packet: (packet: Packet) => void;
+    packetCreate: (packet: Packet) => void;
+    data: (data: RawData) => void;
+    message: (data: RawData) => void;
+    drain: () => void;
+    flush: () => void;
+    heartbeat: () => void;
+    ping: () => void;
+    pong: () => void;
+    error: (err: string | Error) => void;
+    upgrading: (transport: Transport) => void;
+    upgrade: (transport: Transport) => void;
+    upgradeError: (err: Error) => void;
+    close: (reason: string, description?: CloseDetails | Error) => void;
+}
+type SocketState = "opening" | "open" | "closing" | "closed";
+interface WriteOptions {
+    compress?: boolean;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
+ * successfully establishes the connection.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithoutUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithUpgrade
+ * @see Socket
+ */
+export declare class SocketWithoutUpgrade extends Emitter<Record<never, never>, Record<never, never>, SocketReservedEvents> {
+    id: string;
+    transport: Transport;
+    binaryType: BinaryType;
+    readyState: SocketState;
+    writeBuffer: Packet[];
+    protected readonly opts: BaseSocketOptions;
+    protected readonly transports: string[];
+    protected upgrading: boolean;
+    protected setTimeoutFn: typeof setTimeout;
+    private _prevBufferLen;
+    private _pingInterval;
+    private _pingTimeout;
+    private _maxPayload?;
+    private _pingTimeoutTimer;
+    /**
+     * The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
+     * callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
+     */
+    private _pingTimeoutTime;
+    private clearTimeoutFn;
+    private readonly _beforeunloadEventListener;
+    private readonly _offlineEventListener;
+    private readonly secure;
+    private readonly hostname;
+    private readonly port;
+    private readonly _transportsByName;
+    /**
+     * The cookie jar will store the cookies sent by the server (Node. js only).
+     */
+    readonly _cookieJar: CookieJar;
+    static priorWebsocketSuccess: boolean;
+    static protocol: number;
+    /**
+     * Socket constructor.
+     *
+     * @param {String|Object} uri - uri or options
+     * @param {Object} opts - options
+     */
+    constructor(uri: string | BaseSocketOptions, opts: BaseSocketOptions);
+    /**
+     * Creates transport of the given type.
+     *
+     * @param {String} name - transport name
+     * @return {Transport}
+     * @private
+     */
+    protected createTransport(name: string): Transport;
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @private
+     */
+    private _open;
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @private
+     */
+    protected setTransport(transport: Transport): void;
+    /**
+     * Called when connection is deemed open.
+     *
+     * @private
+     */
+    protected onOpen(): void;
+    /**
+     * Handles a packet.
+     *
+     * @private
+     */
+    private _onPacket;
+    /**
+     * Called upon handshake completion.
+     *
+     * @param {Object} data - handshake obj
+     * @private
+     */
+    protected onHandshake(data: HandshakeData): void;
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @private
+     */
+    private _resetPingTimeout;
+    /**
+     * Called on `drain` event
+     *
+     * @private
+     */
+    private _onDrain;
+    /**
+     * Flush write buffers.
+     *
+     * @private
+     */
+    protected flush(): void;
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    private _getWritablePackets;
+    /**
+     * Checks whether the heartbeat timer has expired but the socket has not yet been notified.
+     *
+     * Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
+     * `write()` method then the message would not be buffered by the Socket.IO client.
+     *
+     * @return {boolean}
+     * @private
+     */
+    _hasPingExpired(): boolean;
+    /**
+     * Sends a message.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    write(msg: RawData, options?: WriteOptions, fn?: () => void): this;
+    /**
+     * Sends a message. Alias of {@link Socket#write}.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    send(msg: RawData, options?: WriteOptions, fn?: () => void): this;
+    /**
+     * Sends a packet.
+     *
+     * @param {String} type: packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @private
+     */
+    private _sendPacket;
+    /**
+     * Closes the connection.
+     */
+    close(): this;
+    /**
+     * Called upon transport error
+     *
+     * @private
+     */
+    private _onError;
+    /**
+     * Called upon transport close.
+     *
+     * @private
+     */
+    private _onClose;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see Socket
+ */
+export declare class SocketWithUpgrade extends SocketWithoutUpgrade {
+    private _upgrades;
+    onOpen(): void;
+    /**
+     * Probes a transport.
+     *
+     * @param {String} name - transport name
+     * @private
+     */
+    private _probe;
+    onHandshake(data: HandshakeData): void;
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} upgrades - server upgrades
+     * @private
+     */
+    private _filterUpgrades;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * @example
+ * import { Socket } from "engine.io-client";
+ *
+ * const socket = new Socket();
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see SocketWithUpgrade
+ */
+export declare class Socket extends SocketWithUpgrade {
+    constructor(uri?: string, opts?: SocketOptions);
+    constructor(opts: SocketOptions);
+}
+export {};

node_modules/engine.io-client/build/cjs/socket.js

@@ -0,0 +1,765 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Socket = exports.SocketWithUpgrade = exports.SocketWithoutUpgrade = void 0;
+const index_js_1 = require("./transports/index.js");
+const util_js_1 = require("./util.js");
+const parseqs_js_1 = require("./contrib/parseqs.js");
+const parseuri_js_1 = require("./contrib/parseuri.js");
+const component_emitter_1 = require("@socket.io/component-emitter");
+const engine_io_parser_1 = require("engine.io-parser");
+const globals_node_js_1 = require("./globals.node.js");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:socket"); // debug()
+const withEventListeners = typeof addEventListener === "function" &&
+    typeof removeEventListener === "function";
+const OFFLINE_EVENT_LISTENERS = [];
+if (withEventListeners) {
+    // within a ServiceWorker, any event handler for the 'offline' event must be added on the initial evaluation of the
+    // script, so we create one single event listener here which will forward the event to the socket instances
+    addEventListener("offline", () => {
+        debug("closing %d connection(s) because the network was lost", OFFLINE_EVENT_LISTENERS.length);
+        OFFLINE_EVENT_LISTENERS.forEach((listener) => listener());
+    }, false);
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
+ * successfully establishes the connection.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithoutUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithUpgrade
+ * @see Socket
+ */
+class SocketWithoutUpgrade extends component_emitter_1.Emitter {
+    /**
+     * Socket constructor.
+     *
+     * @param {String|Object} uri - uri or options
+     * @param {Object} opts - options
+     */
+    constructor(uri, opts) {
+        super();
+        this.binaryType = globals_node_js_1.defaultBinaryType;
+        this.writeBuffer = [];
+        this._prevBufferLen = 0;
+        this._pingInterval = -1;
+        this._pingTimeout = -1;
+        this._maxPayload = -1;
+        /**
+         * The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
+         * callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
+         */
+        this._pingTimeoutTime = Infinity;
+        if (uri && "object" === typeof uri) {
+            opts = uri;
+            uri = null;
+        }
+        if (uri) {
+            const parsedUri = (0, parseuri_js_1.parse)(uri);
+            opts.hostname = parsedUri.host;
+            opts.secure =
+                parsedUri.protocol === "https" || parsedUri.protocol === "wss";
+            opts.port = parsedUri.port;
+            if (parsedUri.query)
+                opts.query = parsedUri.query;
+        }
+        else if (opts.host) {
+            opts.hostname = (0, parseuri_js_1.parse)(opts.host).host;
+        }
+        (0, util_js_1.installTimerFunctions)(this, opts);
+        this.secure =
+            null != opts.secure
+                ? opts.secure
+                : typeof location !== "undefined" && "https:" === location.protocol;
+        if (opts.hostname && !opts.port) {
+            // if no port is specified manually, use the protocol default
+            opts.port = this.secure ? "443" : "80";
+        }
+        this.hostname =
+            opts.hostname ||
+                (typeof location !== "undefined" ? location.hostname : "localhost");
+        this.port =
+            opts.port ||
+                (typeof location !== "undefined" && location.port
+                    ? location.port
+                    : this.secure
+                        ? "443"
+                        : "80");
+        this.transports = [];
+        this._transportsByName = {};
+        opts.transports.forEach((t) => {
+            const transportName = t.prototype.name;
+            this.transports.push(transportName);
+            this._transportsByName[transportName] = t;
+        });
+        this.opts = Object.assign({
+            path: "/engine.io",
+            agent: false,
+            withCredentials: false,
+            upgrade: true,
+            timestampParam: "t",
+            rememberUpgrade: false,
+            addTrailingSlash: true,
+            rejectUnauthorized: true,
+            perMessageDeflate: {
+                threshold: 1024,
+            },
+            transportOptions: {},
+            closeOnBeforeunload: false,
+        }, opts);
+        this.opts.path =
+            this.opts.path.replace(/\/$/, "") +
+                (this.opts.addTrailingSlash ? "/" : "");
+        if (typeof this.opts.query === "string") {
+            this.opts.query = (0, parseqs_js_1.decode)(this.opts.query);
+        }
+        if (withEventListeners) {
+            if (this.opts.closeOnBeforeunload) {
+                // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
+                // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
+                // closed/reloaded)
+                this._beforeunloadEventListener = () => {
+                    if (this.transport) {
+                        // silently close the transport
+                        this.transport.removeAllListeners();
+                        this.transport.close();
+                    }
+                };
+                addEventListener("beforeunload", this._beforeunloadEventListener, false);
+            }
+            if (this.hostname !== "localhost") {
+                debug("adding listener for the 'offline' event");
+                this._offlineEventListener = () => {
+                    this._onClose("transport close", {
+                        description: "network connection lost",
+                    });
+                };
+                OFFLINE_EVENT_LISTENERS.push(this._offlineEventListener);
+            }
+        }
+        if (this.opts.withCredentials) {
+            this._cookieJar = (0, globals_node_js_1.createCookieJar)();
+        }
+        this._open();
+    }
+    /**
+     * Creates transport of the given type.
+     *
+     * @param {String} name - transport name
+     * @return {Transport}
+     * @private
+     */
+    createTransport(name) {
+        debug('creating transport "%s"', name);
+        const query = Object.assign({}, this.opts.query);
+        // append engine.io protocol identifier
+        query.EIO = engine_io_parser_1.protocol;
+        // transport name
+        query.transport = name;
+        // session id if we already have one
+        if (this.id)
+            query.sid = this.id;
+        const opts = Object.assign({}, this.opts, {
+            query,
+            socket: this,
+            hostname: this.hostname,
+            secure: this.secure,
+            port: this.port,
+        }, this.opts.transportOptions[name]);
+        debug("options: %j", opts);
+        return new this._transportsByName[name](opts);
+    }
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @private
+     */
+    _open() {
+        if (this.transports.length === 0) {
+            // Emit error on next tick so it can be listened to
+            this.setTimeoutFn(() => {
+                this.emitReserved("error", "No transports available");
+            }, 0);
+            return;
+        }
+        const transportName = this.opts.rememberUpgrade &&
+            SocketWithoutUpgrade.priorWebsocketSuccess &&
+            this.transports.indexOf("websocket") !== -1
+            ? "websocket"
+            : this.transports[0];
+        this.readyState = "opening";
+        const transport = this.createTransport(transportName);
+        transport.open();
+        this.setTransport(transport);
+    }
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @private
+     */
+    setTransport(transport) {
+        debug("setting transport %s", transport.name);
+        if (this.transport) {
+            debug("clearing existing transport %s", this.transport.name);
+            this.transport.removeAllListeners();
+        }
+        // set up transport
+        this.transport = transport;
+        // set up transport listeners
+        transport
+            .on("drain", this._onDrain.bind(this))
+            .on("packet", this._onPacket.bind(this))
+            .on("error", this._onError.bind(this))
+            .on("close", (reason) => this._onClose("transport close", reason));
+    }
+    /**
+     * Called when connection is deemed open.
+     *
+     * @private
+     */
+    onOpen() {
+        debug("socket open");
+        this.readyState = "open";
+        SocketWithoutUpgrade.priorWebsocketSuccess =
+            "websocket" === this.transport.name;
+        this.emitReserved("open");
+        this.flush();
+    }
+    /**
+     * Handles a packet.
+     *
+     * @private
+     */
+    _onPacket(packet) {
+        if ("opening" === this.readyState ||
+            "open" === this.readyState ||
+            "closing" === this.readyState) {
+            debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
+            this.emitReserved("packet", packet);
+            // Socket is live - any packet counts
+            this.emitReserved("heartbeat");
+            switch (packet.type) {
+                case "open":
+                    this.onHandshake(JSON.parse(packet.data));
+                    break;
+                case "ping":
+                    this._sendPacket("pong");
+                    this.emitReserved("ping");
+                    this.emitReserved("pong");
+                    this._resetPingTimeout();
+                    break;
+                case "error":
+                    const err = new Error("server error");
+                    // @ts-ignore
+                    err.code = packet.data;
+                    this._onError(err);
+                    break;
+                case "message":
+                    this.emitReserved("data", packet.data);
+                    this.emitReserved("message", packet.data);
+                    break;
+            }
+        }
+        else {
+            debug('packet received with socket readyState "%s"', this.readyState);
+        }
+    }
+    /**
+     * Called upon handshake completion.
+     *
+     * @param {Object} data - handshake obj
+     * @private
+     */
+    onHandshake(data) {
+        this.emitReserved("handshake", data);
+        this.id = data.sid;
+        this.transport.query.sid = data.sid;
+        this._pingInterval = data.pingInterval;
+        this._pingTimeout = data.pingTimeout;
+        this._maxPayload = data.maxPayload;
+        this.onOpen();
+        // In case open handler closes socket
+        if ("closed" === this.readyState)
+            return;
+        this._resetPingTimeout();
+    }
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @private
+     */
+    _resetPingTimeout() {
+        this.clearTimeoutFn(this._pingTimeoutTimer);
+        const delay = this._pingInterval + this._pingTimeout;
+        this._pingTimeoutTime = Date.now() + delay;
+        this._pingTimeoutTimer = this.setTimeoutFn(() => {
+            this._onClose("ping timeout");
+        }, delay);
+        if (this.opts.autoUnref) {
+            this._pingTimeoutTimer.unref();
+        }
+    }
+    /**
+     * Called on `drain` event
+     *
+     * @private
+     */
+    _onDrain() {
+        this.writeBuffer.splice(0, this._prevBufferLen);
+        // setting prevBufferLen = 0 is very important
+        // for example, when upgrading, upgrade packet is sent over,
+        // and a nonzero prevBufferLen could cause problems on `drain`
+        this._prevBufferLen = 0;
+        if (0 === this.writeBuffer.length) {
+            this.emitReserved("drain");
+        }
+        else {
+            this.flush();
+        }
+    }
+    /**
+     * Flush write buffers.
+     *
+     * @private
+     */
+    flush() {
+        if ("closed" !== this.readyState &&
+            this.transport.writable &&
+            !this.upgrading &&
+            this.writeBuffer.length) {
+            const packets = this._getWritablePackets();
+            debug("flushing %d packets in socket", packets.length);
+            this.transport.send(packets);
+            // keep track of current length of writeBuffer
+            // splice writeBuffer and callbackBuffer on `drain`
+            this._prevBufferLen = packets.length;
+            this.emitReserved("flush");
+        }
+    }
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    _getWritablePackets() {
+        const shouldCheckPayloadSize = this._maxPayload &&
+            this.transport.name === "polling" &&
+            this.writeBuffer.length > 1;
+        if (!shouldCheckPayloadSize) {
+            return this.writeBuffer;
+        }
+        let payloadSize = 1; // first packet type
+        for (let i = 0; i < this.writeBuffer.length; i++) {
+            const data = this.writeBuffer[i].data;
+            if (data) {
+                payloadSize += (0, util_js_1.byteLength)(data);
+            }
+            if (i > 0 && payloadSize > this._maxPayload) {
+                debug("only send %d out of %d packets", i, this.writeBuffer.length);
+                return this.writeBuffer.slice(0, i);
+            }
+            payloadSize += 2; // separator + packet type
+        }
+        debug("payload size is %d (max: %d)", payloadSize, this._maxPayload);
+        return this.writeBuffer;
+    }
+    /**
+     * Checks whether the heartbeat timer has expired but the socket has not yet been notified.
+     *
+     * Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
+     * `write()` method then the message would not be buffered by the Socket.IO client.
+     *
+     * @return {boolean}
+     * @private
+     */
+    /* private */ _hasPingExpired() {
+        if (!this._pingTimeoutTime)
+            return true;
+        const hasExpired = Date.now() > this._pingTimeoutTime;
+        if (hasExpired) {
+            debug("throttled timer detected, scheduling connection close");
+            this._pingTimeoutTime = 0;
+            (0, globals_node_js_1.nextTick)(() => {
+                this._onClose("ping timeout");
+            }, this.setTimeoutFn);
+        }
+        return hasExpired;
+    }
+    /**
+     * Sends a message.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    write(msg, options, fn) {
+        this._sendPacket("message", msg, options, fn);
+        return this;
+    }
+    /**
+     * Sends a message. Alias of {@link Socket#write}.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    send(msg, options, fn) {
+        this._sendPacket("message", msg, options, fn);
+        return this;
+    }
+    /**
+     * Sends a packet.
+     *
+     * @param {String} type: packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @private
+     */
+    _sendPacket(type, data, options, fn) {
+        if ("function" === typeof data) {
+            fn = data;
+            data = undefined;
+        }
+        if ("function" === typeof options) {
+            fn = options;
+            options = null;
+        }
+        if ("closing" === this.readyState || "closed" === this.readyState) {
+            return;
+        }
+        options = options || {};
+        options.compress = false !== options.compress;
+        const packet = {
+            type: type,
+            data: data,
+            options: options,
+        };
+        this.emitReserved("packetCreate", packet);
+        this.writeBuffer.push(packet);
+        if (fn)
+            this.once("flush", fn);
+        this.flush();
+    }
+    /**
+     * Closes the connection.
+     */
+    close() {
+        const close = () => {
+            this._onClose("forced close");
+            debug("socket closing - telling transport to close");
+            this.transport.close();
+        };
+        const cleanupAndClose = () => {
+            this.off("upgrade", cleanupAndClose);
+            this.off("upgradeError", cleanupAndClose);
+            close();
+        };
+        const waitForUpgrade = () => {
+            // wait for upgrade to finish since we can't send packets while pausing a transport
+            this.once("upgrade", cleanupAndClose);
+            this.once("upgradeError", cleanupAndClose);
+        };
+        if ("opening" === this.readyState || "open" === this.readyState) {
+            this.readyState = "closing";
+            if (this.writeBuffer.length) {
+                this.once("drain", () => {
+                    if (this.upgrading) {
+                        waitForUpgrade();
+                    }
+                    else {
+                        close();
+                    }
+                });
+            }
+            else if (this.upgrading) {
+                waitForUpgrade();
+            }
+            else {
+                close();
+            }
+        }
+        return this;
+    }
+    /**
+     * Called upon transport error
+     *
+     * @private
+     */
+    _onError(err) {
+        debug("socket error %j", err);
+        SocketWithoutUpgrade.priorWebsocketSuccess = false;
+        if (this.opts.tryAllTransports &&
+            this.transports.length > 1 &&
+            this.readyState === "opening") {
+            debug("trying next transport");
+            this.transports.shift();
+            return this._open();
+        }
+        this.emitReserved("error", err);
+        this._onClose("transport error", err);
+    }
+    /**
+     * Called upon transport close.
+     *
+     * @private
+     */
+    _onClose(reason, description) {
+        if ("opening" === this.readyState ||
+            "open" === this.readyState ||
+            "closing" === this.readyState) {
+            debug('socket close with reason: "%s"', reason);
+            // clear timers
+            this.clearTimeoutFn(this._pingTimeoutTimer);
+            // stop event from firing again for transport
+            this.transport.removeAllListeners("close");
+            // ensure transport won't stay open
+            this.transport.close();
+            // ignore further transport communication
+            this.transport.removeAllListeners();
+            if (withEventListeners) {
+                if (this._beforeunloadEventListener) {
+                    removeEventListener("beforeunload", this._beforeunloadEventListener, false);
+                }
+                if (this._offlineEventListener) {
+                    const i = OFFLINE_EVENT_LISTENERS.indexOf(this._offlineEventListener);
+                    if (i !== -1) {
+                        debug("removing listener for the 'offline' event");
+                        OFFLINE_EVENT_LISTENERS.splice(i, 1);
+                    }
+                }
+            }
+            // set ready state
+            this.readyState = "closed";
+            // clear session id
+            this.id = null;
+            // emit close event
+            this.emitReserved("close", reason, description);
+            // clean buffers after, so users can still
+            // grab the buffers on `close` event
+            this.writeBuffer = [];
+            this._prevBufferLen = 0;
+        }
+    }
+}
+exports.SocketWithoutUpgrade = SocketWithoutUpgrade;
+SocketWithoutUpgrade.protocol = engine_io_parser_1.protocol;
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see Socket
+ */
+class SocketWithUpgrade extends SocketWithoutUpgrade {
+    constructor() {
+        super(...arguments);
+        this._upgrades = [];
+    }
+    onOpen() {
+        super.onOpen();
+        if ("open" === this.readyState && this.opts.upgrade) {
+            debug("starting upgrade probes");
+            for (let i = 0; i < this._upgrades.length; i++) {
+                this._probe(this._upgrades[i]);
+            }
+        }
+    }
+    /**
+     * Probes a transport.
+     *
+     * @param {String} name - transport name
+     * @private
+     */
+    _probe(name) {
+        debug('probing transport "%s"', name);
+        let transport = this.createTransport(name);
+        let failed = false;
+        SocketWithoutUpgrade.priorWebsocketSuccess = false;
+        const onTransportOpen = () => {
+            if (failed)
+                return;
+            debug('probe transport "%s" opened', name);
+            transport.send([{ type: "ping", data: "probe" }]);
+            transport.once("packet", (msg) => {
+                if (failed)
+                    return;
+                if ("pong" === msg.type && "probe" === msg.data) {
+                    debug('probe transport "%s" pong', name);
+                    this.upgrading = true;
+                    this.emitReserved("upgrading", transport);
+                    if (!transport)
+                        return;
+                    SocketWithoutUpgrade.priorWebsocketSuccess =
+                        "websocket" === transport.name;
+                    debug('pausing current transport "%s"', this.transport.name);
+                    this.transport.pause(() => {
+                        if (failed)
+                            return;
+                        if ("closed" === this.readyState)
+                            return;
+                        debug("changing transport and sending upgrade packet");
+                        cleanup();
+                        this.setTransport(transport);
+                        transport.send([{ type: "upgrade" }]);
+                        this.emitReserved("upgrade", transport);
+                        transport = null;
+                        this.upgrading = false;
+                        this.flush();
+                    });
+                }
+                else {
+                    debug('probe transport "%s" failed', name);
+                    const err = new Error("probe error");
+                    // @ts-ignore
+                    err.transport = transport.name;
+                    this.emitReserved("upgradeError", err);
+                }
+            });
+        };
+        function freezeTransport() {
+            if (failed)
+                return;
+            // Any callback called by transport should be ignored since now
+            failed = true;
+            cleanup();
+            transport.close();
+            transport = null;
+        }
+        // Handle any error that happens while probing
+        const onerror = (err) => {
+            const error = new Error("probe error: " + err);
+            // @ts-ignore
+            error.transport = transport.name;
+            freezeTransport();
+            debug('probe transport "%s" failed because of error: %s', name, err);
+            this.emitReserved("upgradeError", error);
+        };
+        function onTransportClose() {
+            onerror("transport closed");
+        }
+        // When the socket is closed while we're probing
+        function onclose() {
+            onerror("socket closed");
+        }
+        // When the socket is upgraded while we're probing
+        function onupgrade(to) {
+            if (transport && to.name !== transport.name) {
+                debug('"%s" works - aborting "%s"', to.name, transport.name);
+                freezeTransport();
+            }
+        }
+        // Remove all listeners on the transport and on self
+        const cleanup = () => {
+            transport.removeListener("open", onTransportOpen);
+            transport.removeListener("error", onerror);
+            transport.removeListener("close", onTransportClose);
+            this.off("close", onclose);
+            this.off("upgrading", onupgrade);
+        };
+        transport.once("open", onTransportOpen);
+        transport.once("error", onerror);
+        transport.once("close", onTransportClose);
+        this.once("close", onclose);
+        this.once("upgrading", onupgrade);
+        if (this._upgrades.indexOf("webtransport") !== -1 &&
+            name !== "webtransport") {
+            // favor WebTransport
+            this.setTimeoutFn(() => {
+                if (!failed) {
+                    transport.open();
+                }
+            }, 200);
+        }
+        else {
+            transport.open();
+        }
+    }
+    onHandshake(data) {
+        this._upgrades = this._filterUpgrades(data.upgrades);
+        super.onHandshake(data);
+    }
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} upgrades - server upgrades
+     * @private
+     */
+    _filterUpgrades(upgrades) {
+        const filteredUpgrades = [];
+        for (let i = 0; i < upgrades.length; i++) {
+            if (~this.transports.indexOf(upgrades[i]))
+                filteredUpgrades.push(upgrades[i]);
+        }
+        return filteredUpgrades;
+    }
+}
+exports.SocketWithUpgrade = SocketWithUpgrade;
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * @example
+ * import { Socket } from "engine.io-client";
+ *
+ * const socket = new Socket();
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see SocketWithUpgrade
+ */
+class Socket extends SocketWithUpgrade {
+    constructor(uri, opts = {}) {
+        const o = typeof uri === "object" ? uri : opts;
+        if (!o.transports ||
+            (o.transports && typeof o.transports[0] === "string")) {
+            o.transports = (o.transports || ["polling", "websocket", "webtransport"])
+                .map((transportName) => index_js_1.transports[transportName])
+                .filter((t) => !!t);
+        }
+        super(uri, o);
+    }
+}
+exports.Socket = Socket;

node_modules/engine.io-client/build/cjs/transport.d.ts

@@ -0,0 +1,106 @@
+import type { Packet, RawData } from "engine.io-parser";
+import { Emitter } from "@socket.io/component-emitter";
+import type { Socket, SocketOptions } from "./socket.js";
+export declare class TransportError extends Error {
+    readonly description: any;
+    readonly context: any;
+    readonly type = "TransportError";
+    constructor(reason: string, description: any, context: any);
+}
+export interface CloseDetails {
+    description: string;
+    context?: unknown;
+}
+interface TransportReservedEvents {
+    open: () => void;
+    error: (err: TransportError) => void;
+    packet: (packet: Packet) => void;
+    close: (details?: CloseDetails) => void;
+    poll: () => void;
+    pollComplete: () => void;
+    drain: () => void;
+}
+type TransportState = "opening" | "open" | "closed" | "pausing" | "paused";
+export declare abstract class Transport extends Emitter<Record<never, never>, Record<never, never>, TransportReservedEvents> {
+    query: Record<string, string>;
+    writable: boolean;
+    protected opts: SocketOptions;
+    protected supportsBinary: boolean;
+    protected readyState: TransportState;
+    protected socket: Socket;
+    protected setTimeoutFn: typeof setTimeout;
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts: any);
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    protected onError(reason: string, description: any, context?: any): this;
+    /**
+     * Opens the transport.
+     */
+    open(): this;
+    /**
+     * Closes the transport.
+     */
+    close(): this;
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets: any): void;
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    protected onOpen(): void;
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    protected onData(data: RawData): void;
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    protected onPacket(packet: Packet): void;
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    protected onClose(details?: CloseDetails): void;
+    /**
+     * The name of the transport
+     */
+    abstract get name(): string;
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause: () => void): void;
+    protected createUri(schema: string, query?: Record<string, unknown>): string;
+    private _hostname;
+    private _port;
+    private _query;
+    protected abstract doOpen(): any;
+    protected abstract doClose(): any;
+    protected abstract write(packets: Packet[]): any;
+}
+export {};

node_modules/engine.io-client/build/cjs/transport.js

@@ -0,0 +1,153 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Transport = exports.TransportError = void 0;
+const engine_io_parser_1 = require("engine.io-parser");
+const component_emitter_1 = require("@socket.io/component-emitter");
+const util_js_1 = require("./util.js");
+const parseqs_js_1 = require("./contrib/parseqs.js");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:transport"); // debug()
+class TransportError extends Error {
+    constructor(reason, description, context) {
+        super(reason);
+        this.description = description;
+        this.context = context;
+        this.type = "TransportError";
+    }
+}
+exports.TransportError = TransportError;
+class Transport extends component_emitter_1.Emitter {
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts) {
+        super();
+        this.writable = false;
+        (0, util_js_1.installTimerFunctions)(this, opts);
+        this.opts = opts;
+        this.query = opts.query;
+        this.socket = opts.socket;
+        this.supportsBinary = !opts.forceBase64;
+    }
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    onError(reason, description, context) {
+        super.emitReserved("error", new TransportError(reason, description, context));
+        return this;
+    }
+    /**
+     * Opens the transport.
+     */
+    open() {
+        this.readyState = "opening";
+        this.doOpen();
+        return this;
+    }
+    /**
+     * Closes the transport.
+     */
+    close() {
+        if (this.readyState === "opening" || this.readyState === "open") {
+            this.doClose();
+            this.onClose();
+        }
+        return this;
+    }
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets) {
+        if (this.readyState === "open") {
+            this.write(packets);
+        }
+        else {
+            // this might happen if the transport was silently closed in the beforeunload event handler
+            debug("transport is not open, discarding packets");
+        }
+    }
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    onOpen() {
+        this.readyState = "open";
+        this.writable = true;
+        super.emitReserved("open");
+    }
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    onData(data) {
+        const packet = (0, engine_io_parser_1.decodePacket)(data, this.socket.binaryType);
+        this.onPacket(packet);
+    }
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    onPacket(packet) {
+        super.emitReserved("packet", packet);
+    }
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    onClose(details) {
+        this.readyState = "closed";
+        super.emitReserved("close", details);
+    }
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause) { }
+    createUri(schema, query = {}) {
+        return (schema +
+            "://" +
+            this._hostname() +
+            this._port() +
+            this.opts.path +
+            this._query(query));
+    }
+    _hostname() {
+        const hostname = this.opts.hostname;
+        return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
+    }
+    _port() {
+        if (this.opts.port &&
+            ((this.opts.secure && Number(this.opts.port !== 443)) ||
+                (!this.opts.secure && Number(this.opts.port) !== 80))) {
+            return ":" + this.opts.port;
+        }
+        else {
+            return "";
+        }
+    }
+    _query(query) {
+        const encodedQuery = (0, parseqs_js_1.encode)(query);
+        return encodedQuery.length ? "?" + encodedQuery : "";
+    }
+}
+exports.Transport = Transport;

node_modules/engine.io-client/build/cjs/transports/index.d.ts

@@ -0,0 +1,8 @@
+import { XHR } from "./polling-xhr.node.js";
+import { WS } from "./websocket.node.js";
+import { WT } from "./webtransport.js";
+export declare const transports: {
+    websocket: typeof WS;
+    webtransport: typeof WT;
+    polling: typeof XHR;
+};

node_modules/engine.io-client/build/cjs/transports/index.js

@@ -0,0 +1,11 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.transports = void 0;
+const polling_xhr_node_js_1 = require("./polling-xhr.node.js");
+const websocket_node_js_1 = require("./websocket.node.js");
+const webtransport_js_1 = require("./webtransport.js");
+exports.transports = {
+    websocket: websocket_node_js_1.WS,
+    webtransport: webtransport_js_1.WT,
+    polling: polling_xhr_node_js_1.XHR,
+};

node_modules/engine.io-client/build/cjs/transports/polling-fetch.d.ts

@@ -0,0 +1,15 @@
+import { Polling } from "./polling.js";
+/**
+ * HTTP long-polling based on the built-in `fetch()` method.
+ *
+ * Usage: browser, Node.js (since v18), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/fetch
+ * @see https://caniuse.com/fetch
+ * @see https://nodejs.org/api/globals.html#fetch
+ */
+export declare class Fetch extends Polling {
+    doPoll(): void;
+    doWrite(data: string, callback: () => void): void;
+    private _fetch;
+}

node_modules/engine.io-client/build/cjs/transports/polling-fetch.js

@@ -0,0 +1,60 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Fetch = void 0;
+const polling_js_1 = require("./polling.js");
+/**
+ * HTTP long-polling based on the built-in `fetch()` method.
+ *
+ * Usage: browser, Node.js (since v18), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/fetch
+ * @see https://caniuse.com/fetch
+ * @see https://nodejs.org/api/globals.html#fetch
+ */
+class Fetch extends polling_js_1.Polling {
+    doPoll() {
+        this._fetch()
+            .then((res) => {
+            if (!res.ok) {
+                return this.onError("fetch read error", res.status, res);
+            }
+            res.text().then((data) => this.onData(data));
+        })
+            .catch((err) => {
+            this.onError("fetch read error", err);
+        });
+    }
+    doWrite(data, callback) {
+        this._fetch(data)
+            .then((res) => {
+            if (!res.ok) {
+                return this.onError("fetch write error", res.status, res);
+            }
+            callback();
+        })
+            .catch((err) => {
+            this.onError("fetch write error", err);
+        });
+    }
+    _fetch(data) {
+        var _a;
+        const isPost = data !== undefined;
+        const headers = new Headers(this.opts.extraHeaders);
+        if (isPost) {
+            headers.set("content-type", "text/plain;charset=UTF-8");
+        }
+        (_a = this.socket._cookieJar) === null || _a === void 0 ? void 0 : _a.appendCookies(headers);
+        return fetch(this.uri(), {
+            method: isPost ? "POST" : "GET",
+            body: isPost ? data : null,
+            headers,
+            credentials: this.opts.withCredentials ? "include" : "omit",
+        }).then((res) => {
+            var _a;
+            // @ts-ignore getSetCookie() was added in Node.js v19.7.0
+            (_a = this.socket._cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(res.headers.getSetCookie());
+            return res;
+        });
+    }
+}
+exports.Fetch = Fetch;

node_modules/engine.io-client/build/cjs/transports/polling-xhr.d.ts

@@ -0,0 +1,108 @@
+import { Polling } from "./polling.js";
+import { Emitter } from "@socket.io/component-emitter";
+import type { SocketOptions } from "../socket.js";
+import type { CookieJar } from "../globals.node.js";
+import type { RawData } from "engine.io-parser";
+export declare abstract class BaseXHR extends Polling {
+    protected readonly xd: boolean;
+    private pollXhr;
+    /**
+     * XHR Polling constructor.
+     *
+     * @param {Object} opts
+     * @package
+     */
+    constructor(opts: any);
+    /**
+     * Creates a request.
+     *
+     * @private
+     */
+    abstract request(opts?: Record<string, any>): any;
+    /**
+     * Sends data.
+     *
+     * @param {String} data to send.
+     * @param {Function} called upon flush.
+     * @private
+     */
+    doWrite(data: any, fn: any): void;
+    /**
+     * Starts a poll cycle.
+     *
+     * @private
+     */
+    doPoll(): void;
+}
+interface RequestReservedEvents {
+    success: () => void;
+    data: (data: RawData) => void;
+    error: (err: number | Error, context: unknown) => void;
+}
+export type RequestOptions = SocketOptions & {
+    method?: string;
+    data?: RawData;
+    xd: boolean;
+    cookieJar: CookieJar;
+};
+export declare class Request extends Emitter<Record<never, never>, Record<never, never>, RequestReservedEvents> {
+    private readonly createRequest;
+    private readonly _opts;
+    private readonly _method;
+    private readonly _uri;
+    private readonly _data;
+    private _xhr;
+    private setTimeoutFn;
+    private _index;
+    static requestsCount: number;
+    static requests: {};
+    /**
+     * Request constructor
+     *
+     * @param {Object} options
+     * @package
+     */
+    constructor(createRequest: (opts: RequestOptions) => XMLHttpRequest, uri: string, opts: RequestOptions);
+    /**
+     * Creates the XHR object and sends the request.
+     *
+     * @private
+     */
+    private _create;
+    /**
+     * Called upon error.
+     *
+     * @private
+     */
+    private _onError;
+    /**
+     * Cleans up house.
+     *
+     * @private
+     */
+    private _cleanup;
+    /**
+     * Called upon load.
+     *
+     * @private
+     */
+    private _onLoad;
+    /**
+     * Aborts the request.
+     *
+     * @package
+     */
+    abort(): void;
+}
+/**
+ * HTTP long-polling based on the built-in `XMLHttpRequest` object.
+ *
+ * Usage: browser
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export declare class XHR extends BaseXHR {
+    constructor(opts: any);
+    request(opts?: Record<string, any>): Request;
+}
+export {};

node_modules/engine.io-client/build/cjs/transports/polling-xhr.js

@@ -0,0 +1,285 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.XHR = exports.Request = exports.BaseXHR = void 0;
+const polling_js_1 = require("./polling.js");
+const component_emitter_1 = require("@socket.io/component-emitter");
+const util_js_1 = require("../util.js");
+const globals_node_js_1 = require("../globals.node.js");
+const has_cors_js_1 = require("../contrib/has-cors.js");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:polling"); // debug()
+function empty() { }
+class BaseXHR extends polling_js_1.Polling {
+    /**
+     * XHR Polling constructor.
+     *
+     * @param {Object} opts
+     * @package
+     */
+    constructor(opts) {
+        super(opts);
+        if (typeof location !== "undefined") {
+            const isSSL = "https:" === location.protocol;
+            let port = location.port;
+            // some user agents have empty `location.port`
+            if (!port) {
+                port = isSSL ? "443" : "80";
+            }
+            this.xd =
+                (typeof location !== "undefined" &&
+                    opts.hostname !== location.hostname) ||
+                    port !== opts.port;
+        }
+    }
+    /**
+     * Sends data.
+     *
+     * @param {String} data to send.
+     * @param {Function} called upon flush.
+     * @private
+     */
+    doWrite(data, fn) {
+        const req = this.request({
+            method: "POST",
+            data: data,
+        });
+        req.on("success", fn);
+        req.on("error", (xhrStatus, context) => {
+            this.onError("xhr post error", xhrStatus, context);
+        });
+    }
+    /**
+     * Starts a poll cycle.
+     *
+     * @private
+     */
+    doPoll() {
+        debug("xhr poll");
+        const req = this.request();
+        req.on("data", this.onData.bind(this));
+        req.on("error", (xhrStatus, context) => {
+            this.onError("xhr poll error", xhrStatus, context);
+        });
+        this.pollXhr = req;
+    }
+}
+exports.BaseXHR = BaseXHR;
+class Request extends component_emitter_1.Emitter {
+    /**
+     * Request constructor
+     *
+     * @param {Object} options
+     * @package
+     */
+    constructor(createRequest, uri, opts) {
+        super();
+        this.createRequest = createRequest;
+        (0, util_js_1.installTimerFunctions)(this, opts);
+        this._opts = opts;
+        this._method = opts.method || "GET";
+        this._uri = uri;
+        this._data = undefined !== opts.data ? opts.data : null;
+        this._create();
+    }
+    /**
+     * Creates the XHR object and sends the request.
+     *
+     * @private
+     */
+    _create() {
+        var _a;
+        const opts = (0, util_js_1.pick)(this._opts, "agent", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "autoUnref");
+        opts.xdomain = !!this._opts.xd;
+        const xhr = (this._xhr = this.createRequest(opts));
+        try {
+            debug("xhr open %s: %s", this._method, this._uri);
+            xhr.open(this._method, this._uri, true);
+            try {
+                if (this._opts.extraHeaders) {
+                    // @ts-ignore
+                    xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
+                    for (let i in this._opts.extraHeaders) {
+                        if (this._opts.extraHeaders.hasOwnProperty(i)) {
+                            xhr.setRequestHeader(i, this._opts.extraHeaders[i]);
+                        }
+                    }
+                }
+            }
+            catch (e) { }
+            if ("POST" === this._method) {
+                try {
+                    xhr.setRequestHeader("Content-type", "text/plain;charset=UTF-8");
+                }
+                catch (e) { }
+            }
+            try {
+                xhr.setRequestHeader("Accept", "*/*");
+            }
+            catch (e) { }
+            (_a = this._opts.cookieJar) === null || _a === void 0 ? void 0 : _a.addCookies(xhr);
+            // ie6 check
+            if ("withCredentials" in xhr) {
+                xhr.withCredentials = this._opts.withCredentials;
+            }
+            if (this._opts.requestTimeout) {
+                xhr.timeout = this._opts.requestTimeout;
+            }
+            xhr.onreadystatechange = () => {
+                var _a;
+                if (xhr.readyState === 3) {
+                    (_a = this._opts.cookieJar) === null || _a === void 0 ? void 0 : _a.parseCookies(
+                    // @ts-ignore
+                    xhr.getResponseHeader("set-cookie"));
+                }
+                if (4 !== xhr.readyState)
+                    return;
+                if (200 === xhr.status || 1223 === xhr.status) {
+                    this._onLoad();
+                }
+                else {
+                    // make sure the `error` event handler that's user-set
+                    // does not throw in the same tick and gets caught here
+                    this.setTimeoutFn(() => {
+                        this._onError(typeof xhr.status === "number" ? xhr.status : 0);
+                    }, 0);
+                }
+            };
+            debug("xhr data %s", this._data);
+            xhr.send(this._data);
+        }
+        catch (e) {
+            // Need to defer since .create() is called directly from the constructor
+            // and thus the 'error' event can only be only bound *after* this exception
+            // occurs.  Therefore, also, we cannot throw here at all.
+            this.setTimeoutFn(() => {
+                this._onError(e);
+            }, 0);
+            return;
+        }
+        if (typeof document !== "undefined") {
+            this._index = Request.requestsCount++;
+            Request.requests[this._index] = this;
+        }
+    }
+    /**
+     * Called upon error.
+     *
+     * @private
+     */
+    _onError(err) {
+        this.emitReserved("error", err, this._xhr);
+        this._cleanup(true);
+    }
+    /**
+     * Cleans up house.
+     *
+     * @private
+     */
+    _cleanup(fromError) {
+        if ("undefined" === typeof this._xhr || null === this._xhr) {
+            return;
+        }
+        this._xhr.onreadystatechange = empty;
+        if (fromError) {
+            try {
+                this._xhr.abort();
+            }
+            catch (e) { }
+        }
+        if (typeof document !== "undefined") {
+            delete Request.requests[this._index];
+        }
+        this._xhr = null;
+    }
+    /**
+     * Called upon load.
+     *
+     * @private
+     */
+    _onLoad() {
+        const data = this._xhr.responseText;
+        if (data !== null) {
+            this.emitReserved("data", data);
+            this.emitReserved("success");
+            this._cleanup();
+        }
+    }
+    /**
+     * Aborts the request.
+     *
+     * @package
+     */
+    abort() {
+        this._cleanup();
+    }
+}
+exports.Request = Request;
+Request.requestsCount = 0;
+Request.requests = {};
+/**
+ * Aborts pending requests when unloading the window. This is needed to prevent
+ * memory leaks (e.g. when using IE) and to ensure that no spurious error is
+ * emitted.
+ */
+if (typeof document !== "undefined") {
+    // @ts-ignore
+    if (typeof attachEvent === "function") {
+        // @ts-ignore
+        attachEvent("onunload", unloadHandler);
+    }
+    else if (typeof addEventListener === "function") {
+        const terminationEvent = "onpagehide" in globals_node_js_1.globalThisShim ? "pagehide" : "unload";
+        addEventListener(terminationEvent, unloadHandler, false);
+    }
+}
+function unloadHandler() {
+    for (let i in Request.requests) {
+        if (Request.requests.hasOwnProperty(i)) {
+            Request.requests[i].abort();
+        }
+    }
+}
+const hasXHR2 = (function () {
+    const xhr = newRequest({
+        xdomain: false,
+    });
+    return xhr && xhr.responseType !== null;
+})();
+/**
+ * HTTP long-polling based on the built-in `XMLHttpRequest` object.
+ *
+ * Usage: browser
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+class XHR extends BaseXHR {
+    constructor(opts) {
+        super(opts);
+        const forceBase64 = opts && opts.forceBase64;
+        this.supportsBinary = hasXHR2 && !forceBase64;
+    }
+    request(opts = {}) {
+        Object.assign(opts, { xd: this.xd }, this.opts);
+        return new Request(newRequest, this.uri(), opts);
+    }
+}
+exports.XHR = XHR;
+function newRequest(opts) {
+    const xdomain = opts.xdomain;
+    // XMLHttpRequest can be disabled on IE
+    try {
+        if ("undefined" !== typeof XMLHttpRequest && (!xdomain || has_cors_js_1.hasCORS)) {
+            return new XMLHttpRequest();
+        }
+    }
+    catch (e) { }
+    if (!xdomain) {
+        try {
+            return new globals_node_js_1.globalThisShim[["Active"].concat("Object").join("X")]("Microsoft.XMLHTTP");
+        }
+        catch (e) { }
+    }
+}

node_modules/engine.io-client/build/cjs/transports/polling-xhr.node.d.ts

@@ -0,0 +1,11 @@
+import { BaseXHR, Request } from "./polling-xhr.js";
+/**
+ * HTTP long-polling based on the `XMLHttpRequest` object provided by the `xmlhttprequest-ssl` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+export declare class XHR extends BaseXHR {
+    request(opts?: Record<string, any>): Request;
+}

node_modules/engine.io-client/build/cjs/transports/polling-xhr.node.js

@@ -0,0 +1,44 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.XHR = void 0;
+const XMLHttpRequestModule = __importStar(require("xmlhttprequest-ssl"));
+const polling_xhr_js_1 = require("./polling-xhr.js");
+const XMLHttpRequest = XMLHttpRequestModule.default || XMLHttpRequestModule;
+/**
+ * HTTP long-polling based on the `XMLHttpRequest` object provided by the `xmlhttprequest-ssl` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest
+ */
+class XHR extends polling_xhr_js_1.BaseXHR {
+    request(opts = {}) {
+        var _a;
+        Object.assign(opts, { xd: this.xd, cookieJar: (_a = this.socket) === null || _a === void 0 ? void 0 : _a._cookieJar }, this.opts);
+        return new polling_xhr_js_1.Request((opts) => new XMLHttpRequest(opts), this.uri(), opts);
+    }
+}
+exports.XHR = XHR;

node_modules/engine.io-client/build/cjs/transports/polling.d.ts

@@ -0,0 +1,52 @@
+import { Transport } from "../transport.js";
+export declare abstract class Polling extends Transport {
+    private _polling;
+    get name(): string;
+    /**
+     * Opens the socket (triggers polling). We write a PING message to determine
+     * when the transport is open.
+     *
+     * @protected
+     */
+    doOpen(): void;
+    /**
+     * Pauses polling.
+     *
+     * @param {Function} onPause - callback upon buffers are flushed and transport is paused
+     * @package
+     */
+    pause(onPause: any): void;
+    /**
+     * Starts polling cycle.
+     *
+     * @private
+     */
+    private _poll;
+    /**
+     * Overloads onData to detect payloads.
+     *
+     * @protected
+     */
+    onData(data: any): void;
+    /**
+     * For polling, send a close packet.
+     *
+     * @protected
+     */
+    doClose(): void;
+    /**
+     * Writes a packets payload.
+     *
+     * @param {Array} packets - data packets
+     * @protected
+     */
+    write(packets: any): void;
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    protected uri(): string;
+    abstract doPoll(): any;
+    abstract doWrite(data: string, callback: () => void): any;
+}

node_modules/engine.io-client/build/cjs/transports/polling.js

@@ -0,0 +1,165 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Polling = void 0;
+const transport_js_1 = require("../transport.js");
+const util_js_1 = require("../util.js");
+const engine_io_parser_1 = require("engine.io-parser");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:polling"); // debug()
+class Polling extends transport_js_1.Transport {
+    constructor() {
+        super(...arguments);
+        this._polling = false;
+    }
+    get name() {
+        return "polling";
+    }
+    /**
+     * Opens the socket (triggers polling). We write a PING message to determine
+     * when the transport is open.
+     *
+     * @protected
+     */
+    doOpen() {
+        this._poll();
+    }
+    /**
+     * Pauses polling.
+     *
+     * @param {Function} onPause - callback upon buffers are flushed and transport is paused
+     * @package
+     */
+    pause(onPause) {
+        this.readyState = "pausing";
+        const pause = () => {
+            debug("paused");
+            this.readyState = "paused";
+            onPause();
+        };
+        if (this._polling || !this.writable) {
+            let total = 0;
+            if (this._polling) {
+                debug("we are currently polling - waiting to pause");
+                total++;
+                this.once("pollComplete", function () {
+                    debug("pre-pause polling complete");
+                    --total || pause();
+                });
+            }
+            if (!this.writable) {
+                debug("we are currently writing - waiting to pause");
+                total++;
+                this.once("drain", function () {
+                    debug("pre-pause writing complete");
+                    --total || pause();
+                });
+            }
+        }
+        else {
+            pause();
+        }
+    }
+    /**
+     * Starts polling cycle.
+     *
+     * @private
+     */
+    _poll() {
+        debug("polling");
+        this._polling = true;
+        this.doPoll();
+        this.emitReserved("poll");
+    }
+    /**
+     * Overloads onData to detect payloads.
+     *
+     * @protected
+     */
+    onData(data) {
+        debug("polling got data %s", data);
+        const callback = (packet) => {
+            // if its the first message we consider the transport open
+            if ("opening" === this.readyState && packet.type === "open") {
+                this.onOpen();
+            }
+            // if its a close packet, we close the ongoing requests
+            if ("close" === packet.type) {
+                this.onClose({ description: "transport closed by the server" });
+                return false;
+            }
+            // otherwise bypass onData and handle the message
+            this.onPacket(packet);
+        };
+        // decode payload
+        (0, engine_io_parser_1.decodePayload)(data, this.socket.binaryType).forEach(callback);
+        // if an event did not trigger closing
+        if ("closed" !== this.readyState) {
+            // if we got data we're not polling
+            this._polling = false;
+            this.emitReserved("pollComplete");
+            if ("open" === this.readyState) {
+                this._poll();
+            }
+            else {
+                debug('ignoring poll - transport state "%s"', this.readyState);
+            }
+        }
+    }
+    /**
+     * For polling, send a close packet.
+     *
+     * @protected
+     */
+    doClose() {
+        const close = () => {
+            debug("writing close packet");
+            this.write([{ type: "close" }]);
+        };
+        if ("open" === this.readyState) {
+            debug("transport open - closing");
+            close();
+        }
+        else {
+            // in case we're trying to close while
+            // handshaking is in progress (GH-164)
+            debug("transport not open - deferring close");
+            this.once("open", close);
+        }
+    }
+    /**
+     * Writes a packets payload.
+     *
+     * @param {Array} packets - data packets
+     * @protected
+     */
+    write(packets) {
+        this.writable = false;
+        (0, engine_io_parser_1.encodePayload)(packets, (data) => {
+            this.doWrite(data, () => {
+                this.writable = true;
+                this.emitReserved("drain");
+            });
+        });
+    }
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    uri() {
+        const schema = this.opts.secure ? "https" : "http";
+        const query = this.query || {};
+        // cache busting is forced
+        if (false !== this.opts.timestampRequests) {
+            query[this.opts.timestampParam] = (0, util_js_1.randomString)();
+        }
+        if (!this.supportsBinary && !query.sid) {
+            query.b64 = 1;
+        }
+        return this.createUri(schema, query);
+    }
+}
+exports.Polling = Polling;

node_modules/engine.io-client/build/cjs/transports/websocket.d.ts

@@ -0,0 +1,36 @@
+import { Transport } from "../transport.js";
+import type { Packet, RawData } from "engine.io-parser";
+export declare abstract class BaseWS extends Transport {
+    protected ws: any;
+    get name(): string;
+    doOpen(): this;
+    abstract createSocket(uri: string, protocols: string | string[] | undefined, opts: Record<string, any>): any;
+    /**
+     * Adds event listeners to the socket
+     *
+     * @private
+     */
+    private addEventListeners;
+    write(packets: any): void;
+    abstract doWrite(packet: Packet, data: RawData): any;
+    doClose(): void;
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    private uri;
+}
+/**
+ * WebSocket transport based on the built-in `WebSocket` object.
+ *
+ * Usage: browser, Node.js (since v21), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ * @see https://nodejs.org/api/globals.html#websocket
+ */
+export declare class WS extends BaseWS {
+    createSocket(uri: string, protocols: string | string[] | undefined, opts: Record<string, any>): any;
+    doWrite(_packet: Packet, data: RawData): void;
+}

node_modules/engine.io-client/build/cjs/transports/websocket.js

@@ -0,0 +1,136 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WS = exports.BaseWS = void 0;
+const transport_js_1 = require("../transport.js");
+const util_js_1 = require("../util.js");
+const engine_io_parser_1 = require("engine.io-parser");
+const globals_node_js_1 = require("../globals.node.js");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:websocket"); // debug()
+// detect ReactNative environment
+const isReactNative = typeof navigator !== "undefined" &&
+    typeof navigator.product === "string" &&
+    navigator.product.toLowerCase() === "reactnative";
+class BaseWS extends transport_js_1.Transport {
+    get name() {
+        return "websocket";
+    }
+    doOpen() {
+        const uri = this.uri();
+        const protocols = this.opts.protocols;
+        // React Native only supports the 'headers' option, and will print a warning if anything else is passed
+        const opts = isReactNative
+            ? {}
+            : (0, util_js_1.pick)(this.opts, "agent", "perMessageDeflate", "pfx", "key", "passphrase", "cert", "ca", "ciphers", "rejectUnauthorized", "localAddress", "protocolVersion", "origin", "maxPayload", "family", "checkServerIdentity");
+        if (this.opts.extraHeaders) {
+            opts.headers = this.opts.extraHeaders;
+        }
+        try {
+            this.ws = this.createSocket(uri, protocols, opts);
+        }
+        catch (err) {
+            return this.emitReserved("error", err);
+        }
+        this.ws.binaryType = this.socket.binaryType;
+        this.addEventListeners();
+    }
+    /**
+     * Adds event listeners to the socket
+     *
+     * @private
+     */
+    addEventListeners() {
+        this.ws.onopen = () => {
+            if (this.opts.autoUnref) {
+                this.ws._socket.unref();
+            }
+            this.onOpen();
+        };
+        this.ws.onclose = (closeEvent) => this.onClose({
+            description: "websocket connection closed",
+            context: closeEvent,
+        });
+        this.ws.onmessage = (ev) => this.onData(ev.data);
+        this.ws.onerror = (e) => this.onError("websocket error", e);
+    }
+    write(packets) {
+        this.writable = false;
+        // encodePacket efficient as it uses WS framing
+        // no need for encodePayload
+        for (let i = 0; i < packets.length; i++) {
+            const packet = packets[i];
+            const lastPacket = i === packets.length - 1;
+            (0, engine_io_parser_1.encodePacket)(packet, this.supportsBinary, (data) => {
+                // Sometimes the websocket has already been closed but the browser didn't
+                // have a chance of informing us about it yet, in that case send will
+                // throw an error
+                try {
+                    this.doWrite(packet, data);
+                }
+                catch (e) {
+                    debug("websocket closed before onclose event");
+                }
+                if (lastPacket) {
+                    // fake drain
+                    // defer to next tick to allow Socket to clear writeBuffer
+                    (0, globals_node_js_1.nextTick)(() => {
+                        this.writable = true;
+                        this.emitReserved("drain");
+                    }, this.setTimeoutFn);
+                }
+            });
+        }
+    }
+    doClose() {
+        if (typeof this.ws !== "undefined") {
+            this.ws.onerror = () => { };
+            this.ws.close();
+            this.ws = null;
+        }
+    }
+    /**
+     * Generates uri for connection.
+     *
+     * @private
+     */
+    uri() {
+        const schema = this.opts.secure ? "wss" : "ws";
+        const query = this.query || {};
+        // append timestamp to URI
+        if (this.opts.timestampRequests) {
+            query[this.opts.timestampParam] = (0, util_js_1.randomString)();
+        }
+        // communicate binary support capabilities
+        if (!this.supportsBinary) {
+            query.b64 = 1;
+        }
+        return this.createUri(schema, query);
+    }
+}
+exports.BaseWS = BaseWS;
+const WebSocketCtor = globals_node_js_1.globalThisShim.WebSocket || globals_node_js_1.globalThisShim.MozWebSocket;
+/**
+ * WebSocket transport based on the built-in `WebSocket` object.
+ *
+ * Usage: browser, Node.js (since v21), Deno, Bun
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ * @see https://nodejs.org/api/globals.html#websocket
+ */
+class WS extends BaseWS {
+    createSocket(uri, protocols, opts) {
+        return !isReactNative
+            ? protocols
+                ? new WebSocketCtor(uri, protocols)
+                : new WebSocketCtor(uri)
+            : new WebSocketCtor(uri, protocols, opts);
+    }
+    doWrite(_packet, data) {
+        this.ws.send(data);
+    }
+}
+exports.WS = WS;

node_modules/engine.io-client/build/cjs/transports/websocket.node.d.ts

@@ -0,0 +1,14 @@
+import type { Packet, RawData } from "engine.io-parser";
+import { BaseWS } from "./websocket.js";
+/**
+ * WebSocket transport based on the `WebSocket` object provided by the `ws` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ */
+export declare class WS extends BaseWS {
+    createSocket(uri: string, protocols: string | string[] | undefined, opts: Record<string, any>): any;
+    doWrite(packet: Packet, data: RawData): void;
+}

node_modules/engine.io-client/build/cjs/transports/websocket.node.js

@@ -0,0 +1,68 @@
+"use strict";
+var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+}));
+var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+});
+var __importStar = (this && this.__importStar) || function (mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WS = void 0;
+const ws = __importStar(require("ws"));
+const websocket_js_1 = require("./websocket.js");
+/**
+ * WebSocket transport based on the `WebSocket` object provided by the `ws` package.
+ *
+ * Usage: Node.js, Deno (compat), Bun (compat)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebSocket
+ * @see https://caniuse.com/mdn-api_websocket
+ */
+class WS extends websocket_js_1.BaseWS {
+    createSocket(uri, protocols, opts) {
+        var _a;
+        if ((_a = this.socket) === null || _a === void 0 ? void 0 : _a._cookieJar) {
+            opts.headers = opts.headers || {};
+            opts.headers.cookie =
+                typeof opts.headers.cookie === "string"
+                    ? [opts.headers.cookie]
+                    : opts.headers.cookie || [];
+            for (const [name, cookie] of this.socket._cookieJar.cookies) {
+                opts.headers.cookie.push(`${name}=${cookie.value}`);
+            }
+        }
+        return new ws.WebSocket(uri, protocols, opts);
+    }
+    doWrite(packet, data) {
+        const opts = {};
+        if (packet.options) {
+            opts.compress = packet.options.compress;
+        }
+        if (this.opts.perMessageDeflate) {
+            const len = 
+            // @ts-ignore
+            "string" === typeof data ? Buffer.byteLength(data) : data.length;
+            if (len < this.opts.perMessageDeflate.threshold) {
+                opts.compress = false;
+            }
+        }
+        this.ws.send(data, opts);
+    }
+}
+exports.WS = WS;

node_modules/engine.io-client/build/cjs/transports/webtransport.d.ts

@@ -0,0 +1,18 @@
+import { Transport } from "../transport.js";
+import { Packet } from "engine.io-parser";
+/**
+ * WebTransport transport based on the built-in `WebTransport` object.
+ *
+ * Usage: browser, Node.js (with the `@fails-components/webtransport` package)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebTransport
+ * @see https://caniuse.com/webtransport
+ */
+export declare class WT extends Transport {
+    private _transport;
+    private _writer;
+    get name(): string;
+    protected doOpen(): this;
+    protected write(packets: Packet[]): void;
+    protected doClose(): void;
+}

node_modules/engine.io-client/build/cjs/transports/webtransport.js

@@ -0,0 +1,94 @@
+"use strict";
+var __importDefault = (this && this.__importDefault) || function (mod) {
+    return (mod && mod.__esModule) ? mod : { "default": mod };
+};
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.WT = void 0;
+const transport_js_1 = require("../transport.js");
+const globals_node_js_1 = require("../globals.node.js");
+const engine_io_parser_1 = require("engine.io-parser");
+const debug_1 = __importDefault(require("debug")); // debug()
+const debug = (0, debug_1.default)("engine.io-client:webtransport"); // debug()
+/**
+ * WebTransport transport based on the built-in `WebTransport` object.
+ *
+ * Usage: browser, Node.js (with the `@fails-components/webtransport` package)
+ *
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/WebTransport
+ * @see https://caniuse.com/webtransport
+ */
+class WT extends transport_js_1.Transport {
+    get name() {
+        return "webtransport";
+    }
+    doOpen() {
+        try {
+            // @ts-ignore
+            this._transport = new WebTransport(this.createUri("https"), this.opts.transportOptions[this.name]);
+        }
+        catch (err) {
+            return this.emitReserved("error", err);
+        }
+        this._transport.closed
+            .then(() => {
+            debug("transport closed gracefully");
+            this.onClose();
+        })
+            .catch((err) => {
+            debug("transport closed due to %s", err);
+            this.onError("webtransport error", err);
+        });
+        // note: we could have used async/await, but that would require some additional polyfills
+        this._transport.ready.then(() => {
+            this._transport.createBidirectionalStream().then((stream) => {
+                const decoderStream = (0, engine_io_parser_1.createPacketDecoderStream)(Number.MAX_SAFE_INTEGER, this.socket.binaryType);
+                const reader = stream.readable.pipeThrough(decoderStream).getReader();
+                const encoderStream = (0, engine_io_parser_1.createPacketEncoderStream)();
+                encoderStream.readable.pipeTo(stream.writable);
+                this._writer = encoderStream.writable.getWriter();
+                const read = () => {
+                    reader
+                        .read()
+                        .then(({ done, value }) => {
+                        if (done) {
+                            debug("session is closed");
+                            return;
+                        }
+                        debug("received chunk: %o", value);
+                        this.onPacket(value);
+                        read();
+                    })
+                        .catch((err) => {
+                        debug("an error occurred while reading: %s", err);
+                    });
+                };
+                read();
+                const packet = { type: "open" };
+                if (this.query.sid) {
+                    packet.data = `{"sid":"${this.query.sid}"}`;
+                }
+                this._writer.write(packet).then(() => this.onOpen());
+            });
+        });
+    }
+    write(packets) {
+        this.writable = false;
+        for (let i = 0; i < packets.length; i++) {
+            const packet = packets[i];
+            const lastPacket = i === packets.length - 1;
+            this._writer.write(packet).then(() => {
+                if (lastPacket) {
+                    (0, globals_node_js_1.nextTick)(() => {
+                        this.writable = true;
+                        this.emitReserved("drain");
+                    }, this.setTimeoutFn);
+                }
+            });
+        }
+    }
+    doClose() {
+        var _a;
+        (_a = this._transport) === null || _a === void 0 ? void 0 : _a.close();
+    }
+}
+exports.WT = WT;

node_modules/engine.io-client/build/cjs/util.d.ts

@@ -0,0 +1,7 @@
+export declare function pick(obj: any, ...attr: any[]): any;
+export declare function installTimerFunctions(obj: any, opts: any): void;
+export declare function byteLength(obj: any): number;
+/**
+ * Generates a random 8-characters string.
+ */
+export declare function randomString(): string;

node_modules/engine.io-client/build/cjs/util.js

@@ -0,0 +1,65 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.pick = pick;
+exports.installTimerFunctions = installTimerFunctions;
+exports.byteLength = byteLength;
+exports.randomString = randomString;
+const globals_node_js_1 = require("./globals.node.js");
+function pick(obj, ...attr) {
+    return attr.reduce((acc, k) => {
+        if (obj.hasOwnProperty(k)) {
+            acc[k] = obj[k];
+        }
+        return acc;
+    }, {});
+}
+// Keep a reference to the real timeout functions so they can be used when overridden
+const NATIVE_SET_TIMEOUT = globals_node_js_1.globalThisShim.setTimeout;
+const NATIVE_CLEAR_TIMEOUT = globals_node_js_1.globalThisShim.clearTimeout;
+function installTimerFunctions(obj, opts) {
+    if (opts.useNativeTimers) {
+        obj.setTimeoutFn = NATIVE_SET_TIMEOUT.bind(globals_node_js_1.globalThisShim);
+        obj.clearTimeoutFn = NATIVE_CLEAR_TIMEOUT.bind(globals_node_js_1.globalThisShim);
+    }
+    else {
+        obj.setTimeoutFn = globals_node_js_1.globalThisShim.setTimeout.bind(globals_node_js_1.globalThisShim);
+        obj.clearTimeoutFn = globals_node_js_1.globalThisShim.clearTimeout.bind(globals_node_js_1.globalThisShim);
+    }
+}
+// base64 encoded buffers are about 33% bigger (https://en.wikipedia.org/wiki/Base64)
+const BASE64_OVERHEAD = 1.33;
+// we could also have used `new Blob([obj]).size`, but it isn't supported in IE9
+function byteLength(obj) {
+    if (typeof obj === "string") {
+        return utf8Length(obj);
+    }
+    // arraybuffer or blob
+    return Math.ceil((obj.byteLength || obj.size) * BASE64_OVERHEAD);
+}
+function utf8Length(str) {
+    let c = 0, length = 0;
+    for (let i = 0, l = str.length; i < l; i++) {
+        c = str.charCodeAt(i);
+        if (c < 0x80) {
+            length += 1;
+        }
+        else if (c < 0x800) {
+            length += 2;
+        }
+        else if (c < 0xd800 || c >= 0xe000) {
+            length += 3;
+        }
+        else {
+            i++;
+            length += 4;
+        }
+    }
+    return length;
+}
+/**
+ * Generates a random 8-characters string.
+ */
+function randomString() {
+    return (Date.now().toString(36).substring(3) +
+        Math.random().toString(36).substring(2, 5));
+}

node_modules/engine.io-client/build/esm-debug/browser-entrypoint.d.ts

@@ -0,0 +1,3 @@
+import { Socket } from "./socket.js";
+declare const _default: (uri: any, opts: any) => Socket;
+export default _default;

node_modules/engine.io-client/build/esm-debug/browser-entrypoint.js

@@ -0,0 +1,2 @@
+import { Socket } from "./socket.js";
+export default (uri, opts) => new Socket(uri, opts);

node_modules/engine.io-client/build/esm-debug/contrib/has-cors.d.ts

@@ -0,0 +1 @@
+export declare const hasCORS: boolean;

node_modules/engine.io-client/build/esm-debug/contrib/has-cors.js

@@ -0,0 +1,11 @@
+// imported from https://github.com/component/has-cors
+let value = false;
+try {
+    value = typeof XMLHttpRequest !== 'undefined' &&
+        'withCredentials' in new XMLHttpRequest();
+}
+catch (err) {
+    // if XMLHttp support is disabled in IE then it will throw
+    // when trying to create
+}
+export const hasCORS = value;

node_modules/engine.io-client/build/esm-debug/contrib/parseqs.d.ts

@@ -0,0 +1,15 @@
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+export declare function encode(obj: any): string;
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+export declare function decode(qs: any): {};

node_modules/engine.io-client/build/esm-debug/contrib/parseqs.js

@@ -0,0 +1,34 @@
+// imported from https://github.com/galkn/querystring
+/**
+ * Compiles a querystring
+ * Returns string representation of the object
+ *
+ * @param {Object}
+ * @api private
+ */
+export function encode(obj) {
+    let str = '';
+    for (let i in obj) {
+        if (obj.hasOwnProperty(i)) {
+            if (str.length)
+                str += '&';
+            str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
+        }
+    }
+    return str;
+}
+/**
+ * Parses a simple querystring into an object
+ *
+ * @param {String} qs
+ * @api private
+ */
+export function decode(qs) {
+    let qry = {};
+    let pairs = qs.split('&');
+    for (let i = 0, l = pairs.length; i < l; i++) {
+        let pair = pairs[i].split('=');
+        qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
+    }
+    return qry;
+}

node_modules/engine.io-client/build/esm-debug/contrib/parseuri.d.ts

@@ -0,0 +1 @@
+export declare function parse(str: string): any;

node_modules/engine.io-client/build/esm-debug/contrib/parseuri.js

@@ -0,0 +1,64 @@
+// imported from https://github.com/galkn/parseuri
+/**
+ * Parses a URI
+ *
+ * Note: we could also have used the built-in URL object, but it isn't supported on all platforms.
+ *
+ * See:
+ * - https://developer.mozilla.org/en-US/docs/Web/API/URL
+ * - https://caniuse.com/url
+ * - https://www.rfc-editor.org/rfc/rfc3986#appendix-B
+ *
+ * History of the parse() method:
+ * - first commit: https://github.com/socketio/socket.io-client/commit/4ee1d5d94b3906a9c052b459f1a818b15f38f91c
+ * - export into its own module: https://github.com/socketio/engine.io-client/commit/de2c561e4564efeb78f1bdb1ba39ef81b2822cb3
+ * - reimport: https://github.com/socketio/engine.io-client/commit/df32277c3f6d622eec5ed09f493cae3f3391d242
+ *
+ * @author Steven Levithan <stevenlevithan.com> (MIT license)
+ * @api private
+ */
+const re = /^(?:(?![^:@\/?#]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@\/?#]*)(?::([^:@\/?#]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
+const parts = [
+    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
+];
+export function parse(str) {
+    if (str.length > 8000) {
+        throw "URI too long";
+    }
+    const src = str, b = str.indexOf('['), e = str.indexOf(']');
+    if (b != -1 && e != -1) {
+        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
+    }
+    let m = re.exec(str || ''), uri = {}, i = 14;
+    while (i--) {
+        uri[parts[i]] = m[i] || '';
+    }
+    if (b != -1 && e != -1) {
+        uri.source = src;
+        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
+        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
+        uri.ipv6uri = true;
+    }
+    uri.pathNames = pathNames(uri, uri['path']);
+    uri.queryKey = queryKey(uri, uri['query']);
+    return uri;
+}
+function pathNames(obj, path) {
+    const regx = /\/{2,9}/g, names = path.replace(regx, "/").split("/");
+    if (path.slice(0, 1) == '/' || path.length === 0) {
+        names.splice(0, 1);
+    }
+    if (path.slice(-1) == '/') {
+        names.splice(names.length - 1, 1);
+    }
+    return names;
+}
+function queryKey(uri, query) {
+    const data = {};
+    query.replace(/(?:^|&)([^&=]*)=?([^&]*)/g, function ($0, $1, $2) {
+        if ($1) {
+            data[$1] = $2;
+        }
+    });
+    return data;
+}

node_modules/engine.io-client/build/esm-debug/globals.d.ts

@@ -0,0 +1,4 @@
+export declare const nextTick: (cb: any, setTimeoutFn: any) => any;
+export declare const globalThisShim: any;
+export declare const defaultBinaryType = "arraybuffer";
+export declare function createCookieJar(): void;

node_modules/engine.io-client/build/esm-debug/globals.js

@@ -0,0 +1,22 @@
+export const nextTick = (() => {
+    const isPromiseAvailable = typeof Promise === "function" && typeof Promise.resolve === "function";
+    if (isPromiseAvailable) {
+        return (cb) => Promise.resolve().then(cb);
+    }
+    else {
+        return (cb, setTimeoutFn) => setTimeoutFn(cb, 0);
+    }
+})();
+export const globalThisShim = (() => {
+    if (typeof self !== "undefined") {
+        return self;
+    }
+    else if (typeof window !== "undefined") {
+        return window;
+    }
+    else {
+        return Function("return this")();
+    }
+})();
+export const defaultBinaryType = "arraybuffer";
+export function createCookieJar() { }

node_modules/engine.io-client/build/esm-debug/globals.node.d.ts

@@ -0,0 +1,21 @@
+export declare const nextTick: (callback: Function, ...args: any[]) => void;
+export declare const globalThisShim: typeof globalThis;
+export declare const defaultBinaryType = "nodebuffer";
+export declare function createCookieJar(): CookieJar;
+interface Cookie {
+    name: string;
+    value: string;
+    expires?: Date;
+}
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+ */
+export declare function parse(setCookieString: string): Cookie;
+export declare class CookieJar {
+    private _cookies;
+    parseCookies(values: string[]): void;
+    get cookies(): IterableIterator<[string, Cookie]>;
+    addCookies(xhr: any): void;
+    appendCookies(headers: Headers): void;
+}
+export {};

node_modules/engine.io-client/build/esm-debug/globals.node.js

@@ -0,0 +1,91 @@
+export const nextTick = process.nextTick;
+export const globalThisShim = global;
+export const defaultBinaryType = "nodebuffer";
+export function createCookieJar() {
+    return new CookieJar();
+}
+/**
+ * @see https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie
+ */
+export function parse(setCookieString) {
+    const parts = setCookieString.split("; ");
+    const i = parts[0].indexOf("=");
+    if (i === -1) {
+        return;
+    }
+    const name = parts[0].substring(0, i).trim();
+    if (!name.length) {
+        return;
+    }
+    let value = parts[0].substring(i + 1).trim();
+    if (value.charCodeAt(0) === 0x22) {
+        // remove double quotes
+        value = value.slice(1, -1);
+    }
+    const cookie = {
+        name,
+        value,
+    };
+    for (let j = 1; j < parts.length; j++) {
+        const subParts = parts[j].split("=");
+        if (subParts.length !== 2) {
+            continue;
+        }
+        const key = subParts[0].trim();
+        const value = subParts[1].trim();
+        switch (key) {
+            case "Expires":
+                cookie.expires = new Date(value);
+                break;
+            case "Max-Age":
+                const expiration = new Date();
+                expiration.setUTCSeconds(expiration.getUTCSeconds() + parseInt(value, 10));
+                cookie.expires = expiration;
+                break;
+            default:
+            // ignore other keys
+        }
+    }
+    return cookie;
+}
+export class CookieJar {
+    constructor() {
+        this._cookies = new Map();
+    }
+    parseCookies(values) {
+        if (!values) {
+            return;
+        }
+        values.forEach((value) => {
+            const parsed = parse(value);
+            if (parsed) {
+                this._cookies.set(parsed.name, parsed);
+            }
+        });
+    }
+    get cookies() {
+        const now = Date.now();
+        this._cookies.forEach((cookie, name) => {
+            var _a;
+            if (((_a = cookie.expires) === null || _a === void 0 ? void 0 : _a.getTime()) < now) {
+                this._cookies.delete(name);
+            }
+        });
+        return this._cookies.entries();
+    }
+    addCookies(xhr) {
+        const cookies = [];
+        for (const [name, cookie] of this.cookies) {
+            cookies.push(`${name}=${cookie.value}`);
+        }
+        if (cookies.length) {
+            xhr.setDisableHeaderCheck(true);
+            xhr.setRequestHeader("cookie", cookies.join("; "));
+        }
+    }
+    appendCookies(headers) {
+        for (const [name, cookie] of this.cookies) {
+            headers.append("cookie", `${name}=${cookie.value}`);
+        }
+    }
+}

node_modules/engine.io-client/build/esm-debug/index.d.ts

@@ -0,0 +1,15 @@
+import { Socket } from "./socket.js";
+export { Socket };
+export { SocketOptions, SocketWithoutUpgrade, SocketWithUpgrade, } from "./socket.js";
+export declare const protocol: number;
+export { Transport, TransportError } from "./transport.js";
+export { transports } from "./transports/index.js";
+export { installTimerFunctions } from "./util.js";
+export { parse } from "./contrib/parseuri.js";
+export { nextTick } from "./globals.node.js";
+export { Fetch } from "./transports/polling-fetch.js";
+export { XHR as NodeXHR } from "./transports/polling-xhr.node.js";
+export { XHR } from "./transports/polling-xhr.js";
+export { WS as NodeWebSocket } from "./transports/websocket.node.js";
+export { WS as WebSocket } from "./transports/websocket.js";
+export { WT as WebTransport } from "./transports/webtransport.js";

node_modules/engine.io-client/build/esm-debug/index.js

@@ -0,0 +1,15 @@
+import { Socket } from "./socket.js";
+export { Socket };
+export { SocketWithoutUpgrade, SocketWithUpgrade, } from "./socket.js";
+export const protocol = Socket.protocol;
+export { Transport, TransportError } from "./transport.js";
+export { transports } from "./transports/index.js";
+export { installTimerFunctions } from "./util.js";
+export { parse } from "./contrib/parseuri.js";
+export { nextTick } from "./globals.node.js";
+export { Fetch } from "./transports/polling-fetch.js";
+export { XHR as NodeXHR } from "./transports/polling-xhr.node.js";
+export { XHR } from "./transports/polling-xhr.js";
+export { WS as NodeWebSocket } from "./transports/websocket.node.js";
+export { WS as WebSocket } from "./transports/websocket.js";
+export { WT as WebTransport } from "./transports/webtransport.js";

node_modules/engine.io-client/build/esm-debug/package.json

@@ -0,0 +1,10 @@
+{
+  "name": "engine.io-client",
+  "type": "module",
+  "browser": {
+    "ws": false,
+    "./transports/polling-xhr.node.js": "./transports/polling-xhr.js",
+    "./transports/websocket.node.js": "./transports/websocket.js",
+    "./globals.node.js": "./globals.js"
+  }
+}

node_modules/engine.io-client/build/esm-debug/socket.d.ts

@@ -0,0 +1,482 @@
+import { Emitter } from "@socket.io/component-emitter";
+import type { Packet, BinaryType, RawData } from "engine.io-parser";
+import { CloseDetails, Transport } from "./transport.js";
+import { CookieJar } from "./globals.node.js";
+export interface SocketOptions {
+    /**
+     * The host that we're connecting to. Set from the URI passed when connecting
+     */
+    host?: string;
+    /**
+     * The hostname for our connection. Set from the URI passed when connecting
+     */
+    hostname?: string;
+    /**
+     * If this is a secure connection. Set from the URI passed when connecting
+     */
+    secure?: boolean;
+    /**
+     * The port for our connection. Set from the URI passed when connecting
+     */
+    port?: string | number;
+    /**
+     * Any query parameters in our uri. Set from the URI passed when connecting
+     */
+    query?: {
+        [key: string]: any;
+    };
+    /**
+     * `http.Agent` to use, defaults to `false` (NodeJS only)
+     *
+     * Note: the type should be "undefined | http.Agent | https.Agent | false", but this would break browser-only clients.
+     *
+     * @see https://nodejs.org/api/http.html#httprequestoptions-callback
+     */
+    agent?: string | boolean;
+    /**
+     * Whether the client should try to upgrade the transport from
+     * long-polling to something better.
+     * @default true
+     */
+    upgrade?: boolean;
+    /**
+     * Forces base 64 encoding for polling transport even when XHR2
+     * responseType is available and WebSocket even if the used standard
+     * supports binary.
+     */
+    forceBase64?: boolean;
+    /**
+     * The param name to use as our timestamp key
+     * @default 't'
+     */
+    timestampParam?: string;
+    /**
+     * Whether to add the timestamp with each transport request. Note: this
+     * is ignored if the browser is IE or Android, in which case requests
+     * are always stamped
+     * @default false
+     */
+    timestampRequests?: boolean;
+    /**
+     * A list of transports to try (in order). Engine.io always attempts to
+     * connect directly with the first one, provided the feature detection test
+     * for it passes.
+     *
+     * @default ['polling','websocket', 'webtransport']
+     */
+    transports?: ("polling" | "websocket" | "webtransport" | string)[] | TransportCtor[];
+    /**
+     * Whether all the transports should be tested, instead of just the first one.
+     *
+     * If set to `true`, the client will first try to connect with HTTP long-polling, and then with WebSocket in case of
+     * failure, and finally with WebTransport if the previous attempts have failed.
+     *
+     * If set to `false` (default), if the connection with HTTP long-polling fails, then the client will not test the
+     * other transports and will abort the connection.
+     *
+     * @default false
+     */
+    tryAllTransports?: boolean;
+    /**
+     * If true and if the previous websocket connection to the server succeeded,
+     * the connection attempt will bypass the normal upgrade process and will
+     * initially try websocket. A connection attempt following a transport error
+     * will use the normal upgrade process. It is recommended you turn this on
+     * only when using SSL/TLS connections, or if you know that your network does
+     * not block websockets.
+     * @default false
+     */
+    rememberUpgrade?: boolean;
+    /**
+     * Timeout for xhr-polling requests in milliseconds (0) (only for polling transport)
+     */
+    requestTimeout?: number;
+    /**
+     * Transport options for Node.js client (headers etc)
+     */
+    transportOptions?: Object;
+    /**
+     * (SSL) Certificate, Private key and CA certificates to use for SSL.
+     * Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    pfx?: string;
+    /**
+     * (SSL) Private key to use for SSL. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    key?: string;
+    /**
+     * (SSL) A string or passphrase for the private key or pfx. Can be
+     * used in Node.js client environment to manually specify certificate
+     * information.
+     */
+    passphrase?: string;
+    /**
+     * (SSL) Public x509 certificate to use. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    cert?: string;
+    /**
+     * (SSL) An authority certificate or array of authority certificates to
+     * check the remote host against.. Can be used in Node.js client
+     * environment to manually specify certificate information.
+     */
+    ca?: string | string[];
+    /**
+     * (SSL) A string describing the ciphers to use or exclude. Consult the
+     * [cipher format list]
+     * (http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT) for
+     * details on the format.. Can be used in Node.js client environment to
+     * manually specify certificate information.
+     */
+    ciphers?: string;
+    /**
+     * (SSL) If true, the server certificate is verified against the list of
+     * supplied CAs. An 'error' event is emitted if verification fails.
+     * Verification happens at the connection level, before the HTTP request
+     * is sent. Can be used in Node.js client environment to manually specify
+     * certificate information.
+     */
+    rejectUnauthorized?: boolean;
+    /**
+     * Headers that will be passed for each request to the server (via xhr-polling and via websockets).
+     * These values then can be used during handshake or for special proxies.
+     */
+    extraHeaders?: {
+        [header: string]: string;
+    };
+    /**
+     * Whether to include credentials (cookies, authorization headers, TLS
+     * client certificates, etc.) with cross-origin XHR polling requests
+     * @default false
+     */
+    withCredentials?: boolean;
+    /**
+     * Whether to automatically close the connection whenever the beforeunload event is received.
+     * @default false
+     */
+    closeOnBeforeunload?: boolean;
+    /**
+     * Whether to always use the native timeouts. This allows the client to
+     * reconnect when the native timeout functions are overridden, such as when
+     * mock clocks are installed.
+     * @default false
+     */
+    useNativeTimers?: boolean;
+    /**
+     * Whether the heartbeat timer should be unref'ed, in order not to keep the Node.js event loop active.
+     *
+     * @see https://nodejs.org/api/timers.html#timeoutunref
+     * @default false
+     */
+    autoUnref?: boolean;
+    /**
+     * parameters of the WebSocket permessage-deflate extension (see ws module api docs). Set to false to disable.
+     * @default false
+     */
+    perMessageDeflate?: {
+        threshold: number;
+    };
+    /**
+     * The path to get our client file from, in the case of the server
+     * serving it
+     * @default '/engine.io'
+     */
+    path?: string;
+    /**
+     * Whether we should add a trailing slash to the request path.
+     * @default true
+     */
+    addTrailingSlash?: boolean;
+    /**
+     * Either a single protocol string or an array of protocol strings. These strings are used to indicate sub-protocols,
+     * so that a single server can implement multiple WebSocket sub-protocols (for example, you might want one server to
+     * be able to handle different types of interactions depending on the specified protocol)
+     * @default []
+     */
+    protocols?: string | string[];
+}
+type TransportCtor = {
+    new (o: any): Transport;
+};
+type BaseSocketOptions = Omit<SocketOptions, "transports"> & {
+    transports: TransportCtor[];
+};
+interface HandshakeData {
+    sid: string;
+    upgrades: string[];
+    pingInterval: number;
+    pingTimeout: number;
+    maxPayload: number;
+}
+interface SocketReservedEvents {
+    open: () => void;
+    handshake: (data: HandshakeData) => void;
+    packet: (packet: Packet) => void;
+    packetCreate: (packet: Packet) => void;
+    data: (data: RawData) => void;
+    message: (data: RawData) => void;
+    drain: () => void;
+    flush: () => void;
+    heartbeat: () => void;
+    ping: () => void;
+    pong: () => void;
+    error: (err: string | Error) => void;
+    upgrading: (transport: Transport) => void;
+    upgrade: (transport: Transport) => void;
+    upgradeError: (err: Error) => void;
+    close: (reason: string, description?: CloseDetails | Error) => void;
+}
+type SocketState = "opening" | "open" | "closing" | "closed";
+interface WriteOptions {
+    compress?: boolean;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
+ * successfully establishes the connection.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithoutUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithUpgrade
+ * @see Socket
+ */
+export declare class SocketWithoutUpgrade extends Emitter<Record<never, never>, Record<never, never>, SocketReservedEvents> {
+    id: string;
+    transport: Transport;
+    binaryType: BinaryType;
+    readyState: SocketState;
+    writeBuffer: Packet[];
+    protected readonly opts: BaseSocketOptions;
+    protected readonly transports: string[];
+    protected upgrading: boolean;
+    protected setTimeoutFn: typeof setTimeout;
+    private _prevBufferLen;
+    private _pingInterval;
+    private _pingTimeout;
+    private _maxPayload?;
+    private _pingTimeoutTimer;
+    /**
+     * The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
+     * callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
+     */
+    private _pingTimeoutTime;
+    private clearTimeoutFn;
+    private readonly _beforeunloadEventListener;
+    private readonly _offlineEventListener;
+    private readonly secure;
+    private readonly hostname;
+    private readonly port;
+    private readonly _transportsByName;
+    /**
+     * The cookie jar will store the cookies sent by the server (Node. js only).
+     */
+    readonly _cookieJar: CookieJar;
+    static priorWebsocketSuccess: boolean;
+    static protocol: number;
+    /**
+     * Socket constructor.
+     *
+     * @param {String|Object} uri - uri or options
+     * @param {Object} opts - options
+     */
+    constructor(uri: string | BaseSocketOptions, opts: BaseSocketOptions);
+    /**
+     * Creates transport of the given type.
+     *
+     * @param {String} name - transport name
+     * @return {Transport}
+     * @private
+     */
+    protected createTransport(name: string): Transport;
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @private
+     */
+    private _open;
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @private
+     */
+    protected setTransport(transport: Transport): void;
+    /**
+     * Called when connection is deemed open.
+     *
+     * @private
+     */
+    protected onOpen(): void;
+    /**
+     * Handles a packet.
+     *
+     * @private
+     */
+    private _onPacket;
+    /**
+     * Called upon handshake completion.
+     *
+     * @param {Object} data - handshake obj
+     * @private
+     */
+    protected onHandshake(data: HandshakeData): void;
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @private
+     */
+    private _resetPingTimeout;
+    /**
+     * Called on `drain` event
+     *
+     * @private
+     */
+    private _onDrain;
+    /**
+     * Flush write buffers.
+     *
+     * @private
+     */
+    protected flush(): void;
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    private _getWritablePackets;
+    /**
+     * Checks whether the heartbeat timer has expired but the socket has not yet been notified.
+     *
+     * Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
+     * `write()` method then the message would not be buffered by the Socket.IO client.
+     *
+     * @return {boolean}
+     * @private
+     */
+    _hasPingExpired(): boolean;
+    /**
+     * Sends a message.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    write(msg: RawData, options?: WriteOptions, fn?: () => void): this;
+    /**
+     * Sends a message. Alias of {@link Socket#write}.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    send(msg: RawData, options?: WriteOptions, fn?: () => void): this;
+    /**
+     * Sends a packet.
+     *
+     * @param {String} type: packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @private
+     */
+    private _sendPacket;
+    /**
+     * Closes the connection.
+     */
+    close(): this;
+    /**
+     * Called upon transport error
+     *
+     * @private
+     */
+    private _onError;
+    /**
+     * Called upon transport close.
+     *
+     * @private
+     */
+    private _onClose;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see Socket
+ */
+export declare class SocketWithUpgrade extends SocketWithoutUpgrade {
+    private _upgrades;
+    onOpen(): void;
+    /**
+     * Probes a transport.
+     *
+     * @param {String} name - transport name
+     * @private
+     */
+    private _probe;
+    onHandshake(data: HandshakeData): void;
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} upgrades - server upgrades
+     * @private
+     */
+    private _filterUpgrades;
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * @example
+ * import { Socket } from "engine.io-client";
+ *
+ * const socket = new Socket();
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see SocketWithUpgrade
+ */
+export declare class Socket extends SocketWithUpgrade {
+    constructor(uri?: string, opts?: SocketOptions);
+    constructor(opts: SocketOptions);
+}
+export {};

node_modules/engine.io-client/build/esm-debug/socket.js

@@ -0,0 +1,756 @@
+import { transports as DEFAULT_TRANSPORTS } from "./transports/index.js";
+import { installTimerFunctions, byteLength } from "./util.js";
+import { decode } from "./contrib/parseqs.js";
+import { parse } from "./contrib/parseuri.js";
+import { Emitter } from "@socket.io/component-emitter";
+import { protocol } from "engine.io-parser";
+import { createCookieJar, defaultBinaryType, nextTick, } from "./globals.node.js";
+import debugModule from "debug"; // debug()
+const debug = debugModule("engine.io-client:socket"); // debug()
+const withEventListeners = typeof addEventListener === "function" &&
+    typeof removeEventListener === "function";
+const OFFLINE_EVENT_LISTENERS = [];
+if (withEventListeners) {
+    // within a ServiceWorker, any event handler for the 'offline' event must be added on the initial evaluation of the
+    // script, so we create one single event listener here which will forward the event to the socket instances
+    addEventListener("offline", () => {
+        debug("closing %d connection(s) because the network was lost", OFFLINE_EVENT_LISTENERS.length);
+        OFFLINE_EVENT_LISTENERS.forEach((listener) => listener());
+    }, false);
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes without upgrade mechanism, which means that it will keep the first low-level transport that
+ * successfully establishes the connection.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithoutUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithoutUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithUpgrade
+ * @see Socket
+ */
+export class SocketWithoutUpgrade extends Emitter {
+    /**
+     * Socket constructor.
+     *
+     * @param {String|Object} uri - uri or options
+     * @param {Object} opts - options
+     */
+    constructor(uri, opts) {
+        super();
+        this.binaryType = defaultBinaryType;
+        this.writeBuffer = [];
+        this._prevBufferLen = 0;
+        this._pingInterval = -1;
+        this._pingTimeout = -1;
+        this._maxPayload = -1;
+        /**
+         * The expiration timestamp of the {@link _pingTimeoutTimer} object is tracked, in case the timer is throttled and the
+         * callback is not fired on time. This can happen for example when a laptop is suspended or when a phone is locked.
+         */
+        this._pingTimeoutTime = Infinity;
+        if (uri && "object" === typeof uri) {
+            opts = uri;
+            uri = null;
+        }
+        if (uri) {
+            const parsedUri = parse(uri);
+            opts.hostname = parsedUri.host;
+            opts.secure =
+                parsedUri.protocol === "https" || parsedUri.protocol === "wss";
+            opts.port = parsedUri.port;
+            if (parsedUri.query)
+                opts.query = parsedUri.query;
+        }
+        else if (opts.host) {
+            opts.hostname = parse(opts.host).host;
+        }
+        installTimerFunctions(this, opts);
+        this.secure =
+            null != opts.secure
+                ? opts.secure
+                : typeof location !== "undefined" && "https:" === location.protocol;
+        if (opts.hostname && !opts.port) {
+            // if no port is specified manually, use the protocol default
+            opts.port = this.secure ? "443" : "80";
+        }
+        this.hostname =
+            opts.hostname ||
+                (typeof location !== "undefined" ? location.hostname : "localhost");
+        this.port =
+            opts.port ||
+                (typeof location !== "undefined" && location.port
+                    ? location.port
+                    : this.secure
+                        ? "443"
+                        : "80");
+        this.transports = [];
+        this._transportsByName = {};
+        opts.transports.forEach((t) => {
+            const transportName = t.prototype.name;
+            this.transports.push(transportName);
+            this._transportsByName[transportName] = t;
+        });
+        this.opts = Object.assign({
+            path: "/engine.io",
+            agent: false,
+            withCredentials: false,
+            upgrade: true,
+            timestampParam: "t",
+            rememberUpgrade: false,
+            addTrailingSlash: true,
+            rejectUnauthorized: true,
+            perMessageDeflate: {
+                threshold: 1024,
+            },
+            transportOptions: {},
+            closeOnBeforeunload: false,
+        }, opts);
+        this.opts.path =
+            this.opts.path.replace(/\/$/, "") +
+                (this.opts.addTrailingSlash ? "/" : "");
+        if (typeof this.opts.query === "string") {
+            this.opts.query = decode(this.opts.query);
+        }
+        if (withEventListeners) {
+            if (this.opts.closeOnBeforeunload) {
+                // Firefox closes the connection when the "beforeunload" event is emitted but not Chrome. This event listener
+                // ensures every browser behaves the same (no "disconnect" event at the Socket.IO level when the page is
+                // closed/reloaded)
+                this._beforeunloadEventListener = () => {
+                    if (this.transport) {
+                        // silently close the transport
+                        this.transport.removeAllListeners();
+                        this.transport.close();
+                    }
+                };
+                addEventListener("beforeunload", this._beforeunloadEventListener, false);
+            }
+            if (this.hostname !== "localhost") {
+                debug("adding listener for the 'offline' event");
+                this._offlineEventListener = () => {
+                    this._onClose("transport close", {
+                        description: "network connection lost",
+                    });
+                };
+                OFFLINE_EVENT_LISTENERS.push(this._offlineEventListener);
+            }
+        }
+        if (this.opts.withCredentials) {
+            this._cookieJar = createCookieJar();
+        }
+        this._open();
+    }
+    /**
+     * Creates transport of the given type.
+     *
+     * @param {String} name - transport name
+     * @return {Transport}
+     * @private
+     */
+    createTransport(name) {
+        debug('creating transport "%s"', name);
+        const query = Object.assign({}, this.opts.query);
+        // append engine.io protocol identifier
+        query.EIO = protocol;
+        // transport name
+        query.transport = name;
+        // session id if we already have one
+        if (this.id)
+            query.sid = this.id;
+        const opts = Object.assign({}, this.opts, {
+            query,
+            socket: this,
+            hostname: this.hostname,
+            secure: this.secure,
+            port: this.port,
+        }, this.opts.transportOptions[name]);
+        debug("options: %j", opts);
+        return new this._transportsByName[name](opts);
+    }
+    /**
+     * Initializes transport to use and starts probe.
+     *
+     * @private
+     */
+    _open() {
+        if (this.transports.length === 0) {
+            // Emit error on next tick so it can be listened to
+            this.setTimeoutFn(() => {
+                this.emitReserved("error", "No transports available");
+            }, 0);
+            return;
+        }
+        const transportName = this.opts.rememberUpgrade &&
+            SocketWithoutUpgrade.priorWebsocketSuccess &&
+            this.transports.indexOf("websocket") !== -1
+            ? "websocket"
+            : this.transports[0];
+        this.readyState = "opening";
+        const transport = this.createTransport(transportName);
+        transport.open();
+        this.setTransport(transport);
+    }
+    /**
+     * Sets the current transport. Disables the existing one (if any).
+     *
+     * @private
+     */
+    setTransport(transport) {
+        debug("setting transport %s", transport.name);
+        if (this.transport) {
+            debug("clearing existing transport %s", this.transport.name);
+            this.transport.removeAllListeners();
+        }
+        // set up transport
+        this.transport = transport;
+        // set up transport listeners
+        transport
+            .on("drain", this._onDrain.bind(this))
+            .on("packet", this._onPacket.bind(this))
+            .on("error", this._onError.bind(this))
+            .on("close", (reason) => this._onClose("transport close", reason));
+    }
+    /**
+     * Called when connection is deemed open.
+     *
+     * @private
+     */
+    onOpen() {
+        debug("socket open");
+        this.readyState = "open";
+        SocketWithoutUpgrade.priorWebsocketSuccess =
+            "websocket" === this.transport.name;
+        this.emitReserved("open");
+        this.flush();
+    }
+    /**
+     * Handles a packet.
+     *
+     * @private
+     */
+    _onPacket(packet) {
+        if ("opening" === this.readyState ||
+            "open" === this.readyState ||
+            "closing" === this.readyState) {
+            debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
+            this.emitReserved("packet", packet);
+            // Socket is live - any packet counts
+            this.emitReserved("heartbeat");
+            switch (packet.type) {
+                case "open":
+                    this.onHandshake(JSON.parse(packet.data));
+                    break;
+                case "ping":
+                    this._sendPacket("pong");
+                    this.emitReserved("ping");
+                    this.emitReserved("pong");
+                    this._resetPingTimeout();
+                    break;
+                case "error":
+                    const err = new Error("server error");
+                    // @ts-ignore
+                    err.code = packet.data;
+                    this._onError(err);
+                    break;
+                case "message":
+                    this.emitReserved("data", packet.data);
+                    this.emitReserved("message", packet.data);
+                    break;
+            }
+        }
+        else {
+            debug('packet received with socket readyState "%s"', this.readyState);
+        }
+    }
+    /**
+     * Called upon handshake completion.
+     *
+     * @param {Object} data - handshake obj
+     * @private
+     */
+    onHandshake(data) {
+        this.emitReserved("handshake", data);
+        this.id = data.sid;
+        this.transport.query.sid = data.sid;
+        this._pingInterval = data.pingInterval;
+        this._pingTimeout = data.pingTimeout;
+        this._maxPayload = data.maxPayload;
+        this.onOpen();
+        // In case open handler closes socket
+        if ("closed" === this.readyState)
+            return;
+        this._resetPingTimeout();
+    }
+    /**
+     * Sets and resets ping timeout timer based on server pings.
+     *
+     * @private
+     */
+    _resetPingTimeout() {
+        this.clearTimeoutFn(this._pingTimeoutTimer);
+        const delay = this._pingInterval + this._pingTimeout;
+        this._pingTimeoutTime = Date.now() + delay;
+        this._pingTimeoutTimer = this.setTimeoutFn(() => {
+            this._onClose("ping timeout");
+        }, delay);
+        if (this.opts.autoUnref) {
+            this._pingTimeoutTimer.unref();
+        }
+    }
+    /**
+     * Called on `drain` event
+     *
+     * @private
+     */
+    _onDrain() {
+        this.writeBuffer.splice(0, this._prevBufferLen);
+        // setting prevBufferLen = 0 is very important
+        // for example, when upgrading, upgrade packet is sent over,
+        // and a nonzero prevBufferLen could cause problems on `drain`
+        this._prevBufferLen = 0;
+        if (0 === this.writeBuffer.length) {
+            this.emitReserved("drain");
+        }
+        else {
+            this.flush();
+        }
+    }
+    /**
+     * Flush write buffers.
+     *
+     * @private
+     */
+    flush() {
+        if ("closed" !== this.readyState &&
+            this.transport.writable &&
+            !this.upgrading &&
+            this.writeBuffer.length) {
+            const packets = this._getWritablePackets();
+            debug("flushing %d packets in socket", packets.length);
+            this.transport.send(packets);
+            // keep track of current length of writeBuffer
+            // splice writeBuffer and callbackBuffer on `drain`
+            this._prevBufferLen = packets.length;
+            this.emitReserved("flush");
+        }
+    }
+    /**
+     * Ensure the encoded size of the writeBuffer is below the maxPayload value sent by the server (only for HTTP
+     * long-polling)
+     *
+     * @private
+     */
+    _getWritablePackets() {
+        const shouldCheckPayloadSize = this._maxPayload &&
+            this.transport.name === "polling" &&
+            this.writeBuffer.length > 1;
+        if (!shouldCheckPayloadSize) {
+            return this.writeBuffer;
+        }
+        let payloadSize = 1; // first packet type
+        for (let i = 0; i < this.writeBuffer.length; i++) {
+            const data = this.writeBuffer[i].data;
+            if (data) {
+                payloadSize += byteLength(data);
+            }
+            if (i > 0 && payloadSize > this._maxPayload) {
+                debug("only send %d out of %d packets", i, this.writeBuffer.length);
+                return this.writeBuffer.slice(0, i);
+            }
+            payloadSize += 2; // separator + packet type
+        }
+        debug("payload size is %d (max: %d)", payloadSize, this._maxPayload);
+        return this.writeBuffer;
+    }
+    /**
+     * Checks whether the heartbeat timer has expired but the socket has not yet been notified.
+     *
+     * Note: this method is private for now because it does not really fit the WebSocket API, but if we put it in the
+     * `write()` method then the message would not be buffered by the Socket.IO client.
+     *
+     * @return {boolean}
+     * @private
+     */
+    /* private */ _hasPingExpired() {
+        if (!this._pingTimeoutTime)
+            return true;
+        const hasExpired = Date.now() > this._pingTimeoutTime;
+        if (hasExpired) {
+            debug("throttled timer detected, scheduling connection close");
+            this._pingTimeoutTime = 0;
+            nextTick(() => {
+                this._onClose("ping timeout");
+            }, this.setTimeoutFn);
+        }
+        return hasExpired;
+    }
+    /**
+     * Sends a message.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    write(msg, options, fn) {
+        this._sendPacket("message", msg, options, fn);
+        return this;
+    }
+    /**
+     * Sends a message. Alias of {@link Socket#write}.
+     *
+     * @param {String} msg - message.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @return {Socket} for chaining.
+     */
+    send(msg, options, fn) {
+        this._sendPacket("message", msg, options, fn);
+        return this;
+    }
+    /**
+     * Sends a packet.
+     *
+     * @param {String} type: packet type.
+     * @param {String} data.
+     * @param {Object} options.
+     * @param {Function} fn - callback function.
+     * @private
+     */
+    _sendPacket(type, data, options, fn) {
+        if ("function" === typeof data) {
+            fn = data;
+            data = undefined;
+        }
+        if ("function" === typeof options) {
+            fn = options;
+            options = null;
+        }
+        if ("closing" === this.readyState || "closed" === this.readyState) {
+            return;
+        }
+        options = options || {};
+        options.compress = false !== options.compress;
+        const packet = {
+            type: type,
+            data: data,
+            options: options,
+        };
+        this.emitReserved("packetCreate", packet);
+        this.writeBuffer.push(packet);
+        if (fn)
+            this.once("flush", fn);
+        this.flush();
+    }
+    /**
+     * Closes the connection.
+     */
+    close() {
+        const close = () => {
+            this._onClose("forced close");
+            debug("socket closing - telling transport to close");
+            this.transport.close();
+        };
+        const cleanupAndClose = () => {
+            this.off("upgrade", cleanupAndClose);
+            this.off("upgradeError", cleanupAndClose);
+            close();
+        };
+        const waitForUpgrade = () => {
+            // wait for upgrade to finish since we can't send packets while pausing a transport
+            this.once("upgrade", cleanupAndClose);
+            this.once("upgradeError", cleanupAndClose);
+        };
+        if ("opening" === this.readyState || "open" === this.readyState) {
+            this.readyState = "closing";
+            if (this.writeBuffer.length) {
+                this.once("drain", () => {
+                    if (this.upgrading) {
+                        waitForUpgrade();
+                    }
+                    else {
+                        close();
+                    }
+                });
+            }
+            else if (this.upgrading) {
+                waitForUpgrade();
+            }
+            else {
+                close();
+            }
+        }
+        return this;
+    }
+    /**
+     * Called upon transport error
+     *
+     * @private
+     */
+    _onError(err) {
+        debug("socket error %j", err);
+        SocketWithoutUpgrade.priorWebsocketSuccess = false;
+        if (this.opts.tryAllTransports &&
+            this.transports.length > 1 &&
+            this.readyState === "opening") {
+            debug("trying next transport");
+            this.transports.shift();
+            return this._open();
+        }
+        this.emitReserved("error", err);
+        this._onClose("transport error", err);
+    }
+    /**
+     * Called upon transport close.
+     *
+     * @private
+     */
+    _onClose(reason, description) {
+        if ("opening" === this.readyState ||
+            "open" === this.readyState ||
+            "closing" === this.readyState) {
+            debug('socket close with reason: "%s"', reason);
+            // clear timers
+            this.clearTimeoutFn(this._pingTimeoutTimer);
+            // stop event from firing again for transport
+            this.transport.removeAllListeners("close");
+            // ensure transport won't stay open
+            this.transport.close();
+            // ignore further transport communication
+            this.transport.removeAllListeners();
+            if (withEventListeners) {
+                if (this._beforeunloadEventListener) {
+                    removeEventListener("beforeunload", this._beforeunloadEventListener, false);
+                }
+                if (this._offlineEventListener) {
+                    const i = OFFLINE_EVENT_LISTENERS.indexOf(this._offlineEventListener);
+                    if (i !== -1) {
+                        debug("removing listener for the 'offline' event");
+                        OFFLINE_EVENT_LISTENERS.splice(i, 1);
+                    }
+                }
+            }
+            // set ready state
+            this.readyState = "closed";
+            // clear session id
+            this.id = null;
+            // emit close event
+            this.emitReserved("close", reason, description);
+            // clean buffers after, so users can still
+            // grab the buffers on `close` event
+            this.writeBuffer = [];
+            this._prevBufferLen = 0;
+        }
+    }
+}
+SocketWithoutUpgrade.protocol = protocol;
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * In order to allow tree-shaking, there are no transports included, that's why the `transports` option is mandatory.
+ *
+ * @example
+ * import { SocketWithUpgrade, WebSocket } from "engine.io-client";
+ *
+ * const socket = new SocketWithUpgrade({
+ *   transports: [WebSocket]
+ * });
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see Socket
+ */
+export class SocketWithUpgrade extends SocketWithoutUpgrade {
+    constructor() {
+        super(...arguments);
+        this._upgrades = [];
+    }
+    onOpen() {
+        super.onOpen();
+        if ("open" === this.readyState && this.opts.upgrade) {
+            debug("starting upgrade probes");
+            for (let i = 0; i < this._upgrades.length; i++) {
+                this._probe(this._upgrades[i]);
+            }
+        }
+    }
+    /**
+     * Probes a transport.
+     *
+     * @param {String} name - transport name
+     * @private
+     */
+    _probe(name) {
+        debug('probing transport "%s"', name);
+        let transport = this.createTransport(name);
+        let failed = false;
+        SocketWithoutUpgrade.priorWebsocketSuccess = false;
+        const onTransportOpen = () => {
+            if (failed)
+                return;
+            debug('probe transport "%s" opened', name);
+            transport.send([{ type: "ping", data: "probe" }]);
+            transport.once("packet", (msg) => {
+                if (failed)
+                    return;
+                if ("pong" === msg.type && "probe" === msg.data) {
+                    debug('probe transport "%s" pong', name);
+                    this.upgrading = true;
+                    this.emitReserved("upgrading", transport);
+                    if (!transport)
+                        return;
+                    SocketWithoutUpgrade.priorWebsocketSuccess =
+                        "websocket" === transport.name;
+                    debug('pausing current transport "%s"', this.transport.name);
+                    this.transport.pause(() => {
+                        if (failed)
+                            return;
+                        if ("closed" === this.readyState)
+                            return;
+                        debug("changing transport and sending upgrade packet");
+                        cleanup();
+                        this.setTransport(transport);
+                        transport.send([{ type: "upgrade" }]);
+                        this.emitReserved("upgrade", transport);
+                        transport = null;
+                        this.upgrading = false;
+                        this.flush();
+                    });
+                }
+                else {
+                    debug('probe transport "%s" failed', name);
+                    const err = new Error("probe error");
+                    // @ts-ignore
+                    err.transport = transport.name;
+                    this.emitReserved("upgradeError", err);
+                }
+            });
+        };
+        function freezeTransport() {
+            if (failed)
+                return;
+            // Any callback called by transport should be ignored since now
+            failed = true;
+            cleanup();
+            transport.close();
+            transport = null;
+        }
+        // Handle any error that happens while probing
+        const onerror = (err) => {
+            const error = new Error("probe error: " + err);
+            // @ts-ignore
+            error.transport = transport.name;
+            freezeTransport();
+            debug('probe transport "%s" failed because of error: %s', name, err);
+            this.emitReserved("upgradeError", error);
+        };
+        function onTransportClose() {
+            onerror("transport closed");
+        }
+        // When the socket is closed while we're probing
+        function onclose() {
+            onerror("socket closed");
+        }
+        // When the socket is upgraded while we're probing
+        function onupgrade(to) {
+            if (transport && to.name !== transport.name) {
+                debug('"%s" works - aborting "%s"', to.name, transport.name);
+                freezeTransport();
+            }
+        }
+        // Remove all listeners on the transport and on self
+        const cleanup = () => {
+            transport.removeListener("open", onTransportOpen);
+            transport.removeListener("error", onerror);
+            transport.removeListener("close", onTransportClose);
+            this.off("close", onclose);
+            this.off("upgrading", onupgrade);
+        };
+        transport.once("open", onTransportOpen);
+        transport.once("error", onerror);
+        transport.once("close", onTransportClose);
+        this.once("close", onclose);
+        this.once("upgrading", onupgrade);
+        if (this._upgrades.indexOf("webtransport") !== -1 &&
+            name !== "webtransport") {
+            // favor WebTransport
+            this.setTimeoutFn(() => {
+                if (!failed) {
+                    transport.open();
+                }
+            }, 200);
+        }
+        else {
+            transport.open();
+        }
+    }
+    onHandshake(data) {
+        this._upgrades = this._filterUpgrades(data.upgrades);
+        super.onHandshake(data);
+    }
+    /**
+     * Filters upgrades, returning only those matching client transports.
+     *
+     * @param {Array} upgrades - server upgrades
+     * @private
+     */
+    _filterUpgrades(upgrades) {
+        const filteredUpgrades = [];
+        for (let i = 0; i < upgrades.length; i++) {
+            if (~this.transports.indexOf(upgrades[i]))
+                filteredUpgrades.push(upgrades[i]);
+        }
+        return filteredUpgrades;
+    }
+}
+/**
+ * This class provides a WebSocket-like interface to connect to an Engine.IO server. The connection will be established
+ * with one of the available low-level transports, like HTTP long-polling, WebSocket or WebTransport.
+ *
+ * This class comes with an upgrade mechanism, which means that once the connection is established with the first
+ * low-level transport, it will try to upgrade to a better transport.
+ *
+ * @example
+ * import { Socket } from "engine.io-client";
+ *
+ * const socket = new Socket();
+ *
+ * socket.on("open", () => {
+ *   socket.send("hello");
+ * });
+ *
+ * @see SocketWithoutUpgrade
+ * @see SocketWithUpgrade
+ */
+export class Socket extends SocketWithUpgrade {
+    constructor(uri, opts = {}) {
+        const o = typeof uri === "object" ? uri : opts;
+        if (!o.transports ||
+            (o.transports && typeof o.transports[0] === "string")) {
+            o.transports = (o.transports || ["polling", "websocket", "webtransport"])
+                .map((transportName) => DEFAULT_TRANSPORTS[transportName])
+                .filter((t) => !!t);
+        }
+        super(uri, o);
+    }
+}

node_modules/engine.io-client/build/esm-debug/transport.d.ts

@@ -0,0 +1,106 @@
+import type { Packet, RawData } from "engine.io-parser";
+import { Emitter } from "@socket.io/component-emitter";
+import type { Socket, SocketOptions } from "./socket.js";
+export declare class TransportError extends Error {
+    readonly description: any;
+    readonly context: any;
+    readonly type = "TransportError";
+    constructor(reason: string, description: any, context: any);
+}
+export interface CloseDetails {
+    description: string;
+    context?: unknown;
+}
+interface TransportReservedEvents {
+    open: () => void;
+    error: (err: TransportError) => void;
+    packet: (packet: Packet) => void;
+    close: (details?: CloseDetails) => void;
+    poll: () => void;
+    pollComplete: () => void;
+    drain: () => void;
+}
+type TransportState = "opening" | "open" | "closed" | "pausing" | "paused";
+export declare abstract class Transport extends Emitter<Record<never, never>, Record<never, never>, TransportReservedEvents> {
+    query: Record<string, string>;
+    writable: boolean;
+    protected opts: SocketOptions;
+    protected supportsBinary: boolean;
+    protected readyState: TransportState;
+    protected socket: Socket;
+    protected setTimeoutFn: typeof setTimeout;
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts: any);
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    protected onError(reason: string, description: any, context?: any): this;
+    /**
+     * Opens the transport.
+     */
+    open(): this;
+    /**
+     * Closes the transport.
+     */
+    close(): this;
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets: any): void;
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    protected onOpen(): void;
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    protected onData(data: RawData): void;
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    protected onPacket(packet: Packet): void;
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    protected onClose(details?: CloseDetails): void;
+    /**
+     * The name of the transport
+     */
+    abstract get name(): string;
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause: () => void): void;
+    protected createUri(schema: string, query?: Record<string, unknown>): string;
+    private _hostname;
+    private _port;
+    private _query;
+    protected abstract doOpen(): any;
+    protected abstract doClose(): any;
+    protected abstract write(packets: Packet[]): any;
+}
+export {};

node_modules/engine.io-client/build/esm-debug/transport.js

@@ -0,0 +1,145 @@
+import { decodePacket } from "engine.io-parser";
+import { Emitter } from "@socket.io/component-emitter";
+import { installTimerFunctions } from "./util.js";
+import { encode } from "./contrib/parseqs.js";
+import debugModule from "debug"; // debug()
+const debug = debugModule("engine.io-client:transport"); // debug()
+export class TransportError extends Error {
+    constructor(reason, description, context) {
+        super(reason);
+        this.description = description;
+        this.context = context;
+        this.type = "TransportError";
+    }
+}
+export class Transport extends Emitter {
+    /**
+     * Transport abstract constructor.
+     *
+     * @param {Object} opts - options
+     * @protected
+     */
+    constructor(opts) {
+        super();
+        this.writable = false;
+        installTimerFunctions(this, opts);
+        this.opts = opts;
+        this.query = opts.query;
+        this.socket = opts.socket;
+        this.supportsBinary = !opts.forceBase64;
+    }
+    /**
+     * Emits an error.
+     *
+     * @param {String} reason
+     * @param description
+     * @param context - the error context
+     * @return {Transport} for chaining
+     * @protected
+     */
+    onError(reason, description, context) {
+        super.emitReserved("error", new TransportError(reason, description, context));
+        return this;
+    }
+    /**
+     * Opens the transport.
+     */
+    open() {
+        this.readyState = "opening";
+        this.doOpen();
+        return this;
+    }
+    /**
+     * Closes the transport.
+     */
+    close() {
+        if (this.readyState === "opening" || this.readyState === "open") {
+            this.doClose();
+            this.onClose();
+        }
+        return this;
+    }
+    /**
+     * Sends multiple packets.
+     *
+     * @param {Array} packets
+     */
+    send(packets) {
+        if (this.readyState === "open") {
+            this.write(packets);
+        }
+        else {
+            // this might happen if the transport was silently closed in the beforeunload event handler
+            debug("transport is not open, discarding packets");
+        }
+    }
+    /**
+     * Called upon open
+     *
+     * @protected
+     */
+    onOpen() {
+        this.readyState = "open";
+        this.writable = true;
+        super.emitReserved("open");
+    }
+    /**
+     * Called with data.
+     *
+     * @param {String} data
+     * @protected
+     */
+    onData(data) {
+        const packet = decodePacket(data, this.socket.binaryType);
+        this.onPacket(packet);
+    }
+    /**
+     * Called with a decoded packet.
+     *
+     * @protected
+     */
+    onPacket(packet) {
+        super.emitReserved("packet", packet);
+    }
+    /**
+     * Called upon close.
+     *
+     * @protected
+     */
+    onClose(details) {
+        this.readyState = "closed";
+        super.emitReserved("close", details);
+    }
+    /**
+     * Pauses the transport, in order not to lose packets during an upgrade.
+     *
+     * @param onPause
+     */
+    pause(onPause) { }
+    createUri(schema, query = {}) {
+        return (schema +
+            "://" +
+            this._hostname() +
+            this._port() +
+            this.opts.path +
+            this._query(query));
+    }
+    _hostname() {
+        const hostname = this.opts.hostname;
+        return hostname.indexOf(":") === -1 ? hostname : "[" + hostname + "]";
+    }
+    _port() {
+        if (this.opts.port &&
+            ((this.opts.secure && Number(this.opts.port !== 443)) ||
+                (!this.opts.secure && Number(this.opts.port) !== 80))) {
+            return ":" + this.opts.port;
+        }
+        else {
+            return "";
+        }
+    }
+    _query(query) {
+        const encodedQuery = encode(query);
+        return encodedQuery.length ? "?" + encodedQuery : "";
+    }
+}

node_modules/engine.io-client/build/esm-debug/transports/index.d.ts

@@ -0,0 +1,8 @@
+import { XHR } from "./polling-xhr.node.js";
+import { WS } from "./websocket.node.js";
+import { WT } from "./webtransport.js";
+export declare const transports: {
+    websocket: typeof WS;
+    webtransport: typeof WT;
+    polling: typeof XHR;
+};

node_modules/engine.io-client/build/esm-debug/transports/index.js

@@ -0,0 +1,8 @@
+import { XHR } from "./polling-xhr.node.js";
+import { WS } from "./websocket.node.js";
+import { WT } from "./webtransport.js";
+export const transports = {
+    websocket: WS,
+    webtransport: WT,
+    polling: XHR,
+};