GCP API gRPC Node.js

grpcClient.js

// yarn add grpc google-protobuf grpc-tools grpc_tools_node_protoc_ts

// git clone https://github.com/googleapis/googleapis /googleapis

// npx grpc_tools_node_protoc \
//   --js_out=import_style=commonjs,binary:. \
//   --grpc_out=. \
//   --plugin=protoc-gen-grpc=./node_modules/grpc-tools/bin/grpc_node_plugin \
//   -I /googleapis \
//   /Users/horota/work/googleapis/google/cloud/texttospeech/v1/*.proto

// npx grpc_tools_node_protoc \
//   --js_out=import_style=commonjs,binary:. \
//   --grpc_out=. \
//   --plugin=protoc-gen-grpc=./node_modules/grpc-tools/bin/grpc_node_plugin \
//   -I /googleapis \
//   /googleapis/google/api/*.proto


const grpc = require('grpc');
const cloud_tts_grpc_pb = require('./google/cloud/texttospeech/v1/cloud_tts_grpc_pb');
const cloud_tts_pb = require('./google/cloud/texttospeech/v1/cloud_tts_pb');

const client = new cloud_tts_grpc_pb.TextToSpeechClient(
  'texttospeech.googleapis.com',
  grpc.credentials.createInsecure(),
);

const req = new cloud_tts_pb.SynthesizeSpeechRequest();

req.setInput(new cloud_tts_pb.SynthesisInput({
  text: 'Hello'
}));
req.setVoice(new cloud_tts_pb.VoiceSelectionParams({
  languageCode: 'en-US',
  name: 'en-US-Wavenet-F',
  ssmlGender: cloud_tts_pb.SsmlVoiceGender.FEMALE,
}));
req.setAudioConfig(new cloud_tts_pb.AudioConfig({
  audioEncoding: cloud_tts_pb.AudioEncoding.MP3,
  pitch: 1,
}));

client.synthesizeSpeech(req, (error, result) => {
  if (error) {
    console.log('ERROR');
    console.error(error);
    return;
  }
  console.log('RESULT');
  console.log(result);
})

Does not work.