25 bool IsValidImplementation(ir::AstNode *astNode)  in IsValidImplementation()  argument
27     if (astNode == nullptr) {  in IsValidImplementation()
31 …return !IsThis(astNode) && !IsInitializer(astNode) && !IsReturnNode(astNode) && !IsAsTypeNode(astN…  in IsValidImplementation()
34 bool IsInitializer(ir::AstNode *astNode)  in IsInitializer()  argument
36     return astNode != nullptr && astNode->Parent() != nullptr &&  in IsInitializer()
37            ((astNode->IsClassProperty() && astNode->AsClassProperty()->Value() != nullptr) ||  in IsInitializer()
38             (astNode->IsAssignmentExpression() &&  in IsInitializer()
39              astNode->AsAssignmentExpression()->Target()->Declaration()->IsLetOrConstDecl()) ||  in IsInitializer()
40             astNode->IsVariableDeclaration());  in IsInitializer()
43 bool IsThis(ir::AstNode *astNode)  in IsThis()  argument
45     return astNode->IsThisExpression() || astNode->IsTSThisType();  in IsThis()
48 bool IsReturnNode(ir::AstNode *astNode)  in IsReturnNode()  argument
50 …return astNode != nullptr && astNode->Parent() != nullptr && astNode->Parent()->IsReturnStatement(…  in IsReturnNode()
53 bool IsAsTypeNode(ir::AstNode *astNode)  in IsAsTypeNode()  argument
55     return astNode != nullptr && astNode->IsAssignmentExpression() &&  in IsAsTypeNode()
56            astNode->AsAssignmentExpression()->Right()->IsTSAsExpression();  in IsAsTypeNode()