import 'google/protobuf/timestamp.pb.dart' as $0;

[cruvie]

I have already run dart pub global activate protoc_plugin and add protobuf: ^2.1.0 protoc_plugin: ^20.0.1 but the generated file still has an error, thanks a lot for helping

[cruvie]

I fix it by protoc -I=. --dart_out=./ user_info_vo.proto google/protobuf/timestamp.proto thanks to #483 (comment)

[cruvie]

no , this way will generate these files again and again every time I use this cmd , there must be some problems of the protobuf: ^2.1.0 lib

[zs-dima]

This generated WellKnownTypes files leads to one more issue:
grpc/grpc-dart#614
so you could note separate them form the generated protocol and could not create packages that will use WellKnownTypes files.
Would be nice to keep it into account while fixing this issue.