fix(webrtc): resolve lint and type declaration issues

Author: Nkovaturient

libp2p/transport/webrtc/__init__.py

@@ -34,11 +34,11 @@ class WebRTCCodec:
     """Codec for WebRTC protocol (empty protocol with no value)."""
     SIZE = 0
     IS_PATH = False
-    
+
     @staticmethod
     def to_bytes(proto: Any, s: str) -> bytes:
         return b""
-    
+
     @staticmethod
     def to_string(proto: Any, b: bytes) -> str:
         return ""
@@ -48,11 +48,11 @@ class WebRTCDirectCodec:
     """Codec for WebRTC-Direct protocol (empty protocol with no value)."""
     SIZE = 0
     IS_PATH = False
-    
+
     @staticmethod
     def to_bytes(proto: Any, s: str) -> bytes:
         return b""
-    
+
     @staticmethod
     def to_string(proto: Any, b: bytes) -> str:
         return ""
@@ -63,7 +63,7 @@ class CerthashCodec:
     SIZE = -1  # Variable size protocol
     LENGTH_PREFIXED_VAR_SIZE = -1
     IS_PATH = False
-    
+
     @staticmethod
     def to_bytes(proto: Any, s: str) -> bytes:
         if not s:
@@ -84,7 +84,7 @@ def to_bytes(proto: Any, s: str) -> bytes:
             return base64.urlsafe_b64decode(s_bytes)
         except Exception:
             return s.encode('utf-8')
-    
+
     @staticmethod
     def to_string(proto: Any, b: bytes) -> str:
         if not b:
@@ -96,55 +96,55 @@ def to_string(proto: Any, b: bytes) -> str:
 
 # Register WebRTC protocols with multiaddr
 try:
-    
+
     # Create codec instances
     webrtc_codec = WebRTCCodec()
     webrtc_direct_codec = WebRTCDirectCodec()
     certhash_codec = CerthashCodec()
-    
+
     # Register codec modules for multiaddr
     sys.modules['multiaddr.codecs.webrtc'] = webrtc_codec  # type: ignore
     sys.modules['multiaddr.codecs.webrtc_direct'] = webrtc_direct_codec  # type: ignore
     sys.modules['multiaddr.codecs.certhash'] = certhash_codec  # type: ignore
-    
+
     setattr(codecs, 'webrtc', webrtc_codec)
     setattr(codecs, 'webrtc_direct', webrtc_direct_codec)
     setattr(codecs, 'certhash', certhash_codec)
-    
+
     # Create Protocol objects with string codec names
     webrtc_protocol = Protocol(
         code=CODEC_WEBRTC,
         name=PROTOCOL_WEBRTC,
-        codec="webrtc" 
+        codec="webrtc"
     )
-    
+
     webrtc_direct_protocol = Protocol(
         code=CODEC_WEBRTC_DIRECT,
         name=PROTOCOL_WEBRTC_DIRECT,
-        codec="webrtc_direct" 
+        codec="webrtc_direct"
     )
-    
+
     certhash_protocol = Protocol(
         code=CODEC_CERTHASH,
         name=PROTOCOL_CERTHASH,
-        codec="certhash" 
+        codec="certhash"
     )
-    
+
     # Register protocols using the add_protocol function
     protocols.add_protocol(webrtc_protocol)
     protocols.add_protocol(webrtc_direct_protocol)
     protocols.add_protocol(certhash_protocol)
-    
+
     print("✅ WebRTC protocols registered with multiaddr")
-    
+
 except ImportError as e:
     print(f"⚠️ Failed to register WebRTC protocols: {e}")
 except Exception as e:
     print(f"⚠️ Error registering WebRTC protocols: {e}")
 
 __all__ = [
     "WebRTCTransport",
-    "WebRTCDirectTransport", 
+    "WebRTCDirectTransport",
     "DEFAULT_ICE_SERVERS",
     "SIGNALING_PROTOCOL",
     "MUXER_PROTOCOL",
@@ -159,11 +159,11 @@ def to_string(proto: Any, b: bytes) -> str:
 ]
 
 
-def webrtc(config: Dict[str, Any] | None = None) -> WebRTCTransport:
+def webrtc(config: dict[str, Any] | None = None) -> WebRTCTransport:
     """Create a WebRTC transport instance (private-to-private)."""
     return WebRTCTransport(config)
 
 
-def webrtc_direct(config: Dict[str, Any] | None = None) -> WebRTCDirectTransport:
+def webrtc_direct(config: dict[str, Any] | None = None) -> WebRTCDirectTransport:
     """Create a WebRTC-Direct transport instance (private-to-public)."""
-    return WebRTCDirectTransport(config)
+    return WebRTCDirectTransport(config)