What am I doing wrong while trying to create a GRPC for web from my proto definition using protoc command in JavaScript?

Question

I'm trying to create a JavaScript from my proto definition.

I'm using this command:

protoc \
--proto_path=./grpc \
--grpc-web_out=mode=grpcwebtext:./lib/gerado/grpc/js/ \
--fatal_warnings interface.proto 

But nothing is generated. And no one message of error is show.
What I'm doing wrong?

I have been tried all kind of approach to solve this.

P.S.: Only now i notice that if in my .proto file there is at least one service, than no output is generated to javascript.

Answer 1

interface.proto:

syntax = "proto3";

service X {
    rpc Y(Z) returns (Z);
}

message Z {
};

With binaries from the releases added to {PATH}:

• protoc-gen-grpc-web 1.4.2
• protobuf-javascript v3.21.2

And without --js_out:

protoc \
--proto_path=${PWD} \
--grpc-web_out=import_style=commonjs,mode=grpcwebtext:${PWD} \
${PWD}/interface.proto

Generates interface_grpc_web_pb.js as expected.

With --js_out:

protoc \
--proto_path=${PWD} \
--js_out=import_style=commonjs:${PWD} \
--grpc-web_out=import_style=commonjs,mode=grpcwebtext:${PWD} \
${PWD}/interface.proto

Additionally generates interface_pb.js