diff --git a/es2panda/binder/variable.h b/es2panda/binder/variable.h
index d9408beec3ad53a41f22fd6856222dd07ded7b6b..fc7b31480e8fc1ebf5287cc6ee0bf7458935d644 100644
--- a/es2panda/binder/variable.h
+++ b/es2panda/binder/variable.h
@@ -46,7 +46,7 @@ public:
     NO_COPY_SEMANTIC(Variable);
     NO_MOVE_SEMANTIC(Variable);
 
-    VariableType virtual Type() const = 0;
+    virtual VariableType Type() const = 0;
 
 #define DECLARE_CHECKS_CASTS(variableType, className)     \
     bool Is##className() const                            \
diff --git a/es2panda/ir/expressions/literals/bigIntLiteral.cpp b/es2panda/ir/expressions/literals/bigIntLiteral.cpp
index 0a274fa6a227063a2e92c215839d7d85c1282f9a..47251cae62baa0140f520d192632c84824e05fe8 100644
--- a/es2panda/ir/expressions/literals/bigIntLiteral.cpp
+++ b/es2panda/ir/expressions/literals/bigIntLiteral.cpp
@@ -30,7 +30,7 @@ void BigIntLiteral::Dump(ir::AstDumper *dumper) const
 
 void BigIntLiteral::Compile(compiler::PandaGen *pg) const
 {
-    util::StringView bigIntValue = src_.Substr(0, src_.Length()-1);
+    util::StringView bigIntValue = src_.Substr(0, src_.Length() - 1);
     pg->LoadAccumulatorBigInt(this, bigIntValue);
 }
 
diff --git a/es2panda/parser/parserImpl.cpp b/es2panda/parser/parserImpl.cpp
index 4c44ee5f1e41ff53a13f63a25a90dd076249f04a..f7691770cdbcd568853e509328488c0e4fbe52a2 100644
--- a/es2panda/parser/parserImpl.cpp
+++ b/es2panda/parser/parserImpl.cpp
@@ -3396,7 +3396,7 @@ ir::Expression *ParserImpl::ParseFunctionParameter(bool isDeclare)
     return functionParameter;
 }
 
-void ParserImpl::ValidateLvalueAssignmentTarget(ir::Expression *node)
+void ParserImpl::ValidateLvalueAssignmentTarget(ir::Expression *node) const
 {
     switch (node->Type()) {
         case ir::AstNodeType::IDENTIFIER: {
diff --git a/es2panda/parser/parserImpl.h b/es2panda/parser/parserImpl.h
index 008933c30af5bc064b0945eb5990d96917ceb8dc..ee95e786e3eaf051da830632ad3c033be195801d 100644
--- a/es2panda/parser/parserImpl.h
+++ b/es2panda/parser/parserImpl.h
@@ -396,7 +396,7 @@ private:
     ir::AstNode *ParseImportDefaultSpecifier(ArenaVector<ir::AstNode *> *specifiers);
     ir::AstNode *ParseImportSpecifiers(ArenaVector<ir::AstNode *> *specifiers);
     void ValidateAssignmentTarget(ExpressionParseFlags flags, ir::Expression *node);
-    void ValidateLvalueAssignmentTarget(ir::Expression *node);
+    void ValidateLvalueAssignmentTarget(ir::Expression *node) const;
     void ValidateArrowParameterBindings(const ir::Expression *node);
 
     ir::ExportDefaultDeclaration *ParseExportDefaultDeclaration(const lexer::SourcePosition &startLoc,
diff --git a/ts2panda/ts2abc/ts2abc.cpp b/ts2panda/ts2abc/ts2abc.cpp
index 9b0be9940321f7d8618087d457a543c9e55b77bb..f244ae8830dc6baf537ee136f7c93126d9524e93 100644
--- a/ts2panda/ts2abc/ts2abc.cpp
+++ b/ts2panda/ts2abc/ts2abc.cpp
@@ -1450,7 +1450,7 @@ static bool EmitProgram(const std::string &output, int optLevel, std::string opt
     return true;
 }
 
-static bool EmitAndRestoreProgram(panda::pandasm::Program &prog, panda::ts2abc::Options options)
+static bool EmitAndRestoreProgram(panda::pandasm::Program &prog, const panda::ts2abc::Options options)
 {
     if (!EmitProgram(g_outputFileName, options.GetOptLevelArg(), options.GetOptLogLevelArg(), prog)) {
         std::cerr << "fail to emit porgram " << g_outputFileName << " in HandleBuffer" << std::endl;
@@ -1462,7 +1462,7 @@ static bool EmitAndRestoreProgram(panda::pandasm::Program &prog, panda::ts2abc::
 }
 
 static bool HandleBuffer(const int &ret, char *buff, std::string &data, panda::pandasm::Program &prog,
-                         panda::ts2abc::Options options)
+                         const panda::ts2abc::Options options)
 {
     uint32_t startPos = 0;
     if (options.IsMultiProgramsPipe() && ((buff[0] == '*' && data.back() != '#') ||
@@ -1509,7 +1509,7 @@ static bool HandleBuffer(const int &ret, char *buff, std::string &data, panda::p
     return true;
 }
 
-static bool ReadFromPipe(panda::pandasm::Program &prog, panda::ts2abc::Options options)
+static bool ReadFromPipe(panda::pandasm::Program &prog, const panda::ts2abc::Options options)
 {
     std::string data;
     const size_t bufSize = 4096;
@@ -1536,7 +1536,7 @@ static bool ReadFromPipe(panda::pandasm::Program &prog, panda::ts2abc::Options o
     return true;
 }
 
-bool GenerateProgramsFromPipe(panda::ts2abc::Options options)
+bool GenerateProgramsFromPipe(const panda::ts2abc::Options options)
 {
     panda::pandasm::Program prog = panda::pandasm::Program();
     prog.lang = panda::pandasm::extensions::Language::ECMASCRIPT;
diff --git a/ts2panda/ts2abc/ts2abc.h b/ts2panda/ts2abc/ts2abc.h
index dfcee1e337103d65e9564622e9e5c681dc01d371..390924d22e5dc1d513007977eda335fe02bd87d9 100644
--- a/ts2panda/ts2abc/ts2abc.h
+++ b/ts2panda/ts2abc/ts2abc.h
@@ -52,7 +52,7 @@ enum class OptLevel {
 
 bool HandleJsonFile(const std::string &input, std::string &data);
 bool GenerateProgram(const std::string &data, const std::string &output, panda::ts2abc::Options options);
-bool GenerateProgramsFromPipe(panda::ts2abc::Options options);
+bool GenerateProgramsFromPipe(const panda::ts2abc::Options options);
 bool CompileNpmEntries(const std::string &input, const std::string &output);
 bool GetDebugLog();
 void ParseLogEnable(const Json::Value &rootValue);