required field being deserialized as empty string

[scullionw]

Is this expected? From what i understand, in proto2, if a field is marked as required then deserialization should fail if it is missing

Generated code (See required field)

Raw protoc decode (field is missing)

prost decoded struct (deserialization succeeded, empty string)

fwiw our nodejs protobuf library does fail on decode, but im wondering what the expected behaviour is