fix dart format issues

Author: jumperchen

lib/src/darty.dart

@@ -164,7 +164,8 @@ class OptionBuilder {
     return this;
   }
 
-  OptionBuilder setAuthFn(void Function(void Function(Map auth) callback) authFn) {
+  OptionBuilder setAuthFn(
+      void Function(void Function(Map auth) callback) authFn) {
     _opts['auth'] = authFn;
     return this;
   }

lib/src/engine/socket.dart

@@ -103,9 +103,8 @@ class Socket extends EventEmitter {
     }
 
     upgrade = opts['upgrade'] != false;
-    path = '${(opts['path'] ?? '/engine.io')
-            .toString()
-            .replaceFirst(RegExp(r'\/$'), '')}/';
+    path =
+        '${(opts['path'] ?? '/engine.io').toString().replaceFirst(RegExp(r'\/$'), '')}/';
     forceJSONP = opts['forceJSONP'] == true;
     jsonp = opts['jsonp'] != false;
     forceBase64 = opts['forceBase64'] == true;

lib/src/socket.dart

@@ -219,7 +219,7 @@ class Socket extends EventEmitter {
   }
 
   /// Sends a CONNECT packet to initiate the Socket.IO session.
-  /// 
+  ///
   /// @param {data}
   /// @api private
   void sendConnectPacket(Map? data) {

test/io_client.dart

@@ -7,8 +7,7 @@ import 'package:socket_io_client/socket_io_client.dart' as io;
 void main() {
   var socket = io.io(
       'http://localhost:3000',
-      io.OptionBuilder()
-          .setTransports(['websocket'])
+      io.OptionBuilder().setTransports(['websocket'])
           // .disableAutoConnect()
           .build());