Further refactoring of declarations in the AST:

src/rewriter.cc

Index: src/rewriter.cc
diff --git a/src/rewriter.cc b/src/rewriter.cc
index 8308792baa8a00d1e38bb887bf828768caf3cdec..a92c3c3ae278b977f0263eea9376d8574f3bbd34 100644
--- a/src/rewriter.cc
+++ b/src/rewriter.cc
@@ -210,6 +210,7 @@ void Processor::VisitWithStatement(WithStatement* node) {
 
 // Do nothing:
 void Processor::VisitVariableDeclaration(VariableDeclaration* node) {}
+void Processor::VisitFunctionDeclaration(FunctionDeclaration* node) {}
 void Processor::VisitModuleDeclaration(ModuleDeclaration* node) {}
 void Processor::VisitModuleLiteral(ModuleLiteral* node) {}
 void Processor::VisitModuleVariable(ModuleVariable* node) {}