优化

app/src/main/assets/web/help/md/ruleHelp.md

@@ -17,6 +17,8 @@
 > `JavaScript Code` 直接填写JavaScript片段  
 > `{"example":"https://www.example.com/js/example.js", ...}` 自动复用已经下载的js文件
 
+> 注意此处定义的函数可能会被多个线程同时调用，在函数里的全局变量内容将会共享使用，对其进行修改可能会出现竞争问题
+
 * 并发率
 > 并发限制，单位ms，可填写两种格式
 

app/src/main/java/io/legado/app/model/SharedJsScope.kt

@@ -70,13 +70,6 @@ object SharedJsScope {
             if (scope is ScriptableObject) {
                 scope.sealObject()
             }
-            if (scope is Map<*, *>) {
-                scope.entries.forEach {
-                    if (it is ScriptableObject) {
-                        it.sealObject()
-                    }
-                }
-            }
             scopeMap[key] = WeakReference(scope)
         }
         return scope

app/src/main/java/io/legado/app/model/analyzeRule/AnalyzeUrl.kt

@@ -97,7 +97,7 @@ class AnalyzeUrl(
         private set
     var type: String? = null
         private set
-    val headerMap = HashMap<String, String>()
+    val headerMap = LinkedHashMap<String, String>()
     private var urlNoQuery: String = ""
     private var encodedForm: String? = null
     private var encodedQuery: String? = null

app/src/main/java/io/legado/app/model/webBook/BookList.kt

@@ -189,7 +189,7 @@ object BookList {
         baseUrl: String,
         variable: String?,
         log: Boolean,
-        filter: ((name: String, author: String) -> Boolean)? = null,
+        filter: ((name: String, author: String) -> Boolean)?,
         ruleName: List<AnalyzeRule.SourceRule>,
         ruleBookUrl: List<AnalyzeRule.SourceRule>,
         ruleAuthor: List<AnalyzeRule.SourceRule>,