fix lint issue

.pubignore

@@ -37,3 +37,4 @@ example/.pub-cache/
 example/.pub/
 example/build/
 example
+example/android/app/debug.keystore

lib/src/fluwx_web.dart

@@ -21,8 +21,6 @@
 // of your plugin as a separate package, instead of inlining it in the same
 // package as the core of your plugin.
 // ignore: avoid_web_libraries_in_flutter
-import 'dart:html' as html show window;
-
 import 'package:flutter_web_plugins/flutter_web_plugins.dart';
 
 import 'method_channel/fluwx_platform_interface.dart';

lib/src/share/share_models.dart

@@ -145,7 +145,7 @@ class WeChatShareImageModel extends WeChatShareModel {
       this.messageExt,
       this.compressThumbnail = true,
       this.msgSignature})
-      : this.thumbnail = thumbnail ?? source;
+      : thumbnail = thumbnail ?? source;
 
   final WeChatImage source;
   final WeChatImage thumbnail;
@@ -288,7 +288,7 @@ class WeChatShareWebPageModel extends WeChatShareModel {
     this.msgSignature,
     this.compressThumbnail = true,
   })  : assert(webPage.isNotEmpty),
-        this.description = description ?? webPage;
+        description = description ?? webPage;
 
   final String webPage;
   final WeChatImage? thumbnail;