listVoices.js

/**
 * Copyright 2018, Google, Inc.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

'use strict';

async function listVoices() {
  // [START tts_list_voices]
  const textToSpeech = require('@google-cloud/text-to-speech');

  const client = new textToSpeech.TextToSpeechClient();

  const [result] = await client.listVoices({});
  const voices = result.voices;

  console.log('Voices:');
  voices.forEach(voice => {
    console.log(`Name: ${voice.name}`);
    console.log(`  SSML Voice Gender: ${voice.ssmlGender}`);
    console.log(`  Natural Sample Rate Hertz: ${voice.naturalSampleRateHertz}`);
    console.log(`  Supported languages:`);
    voice.languageCodes.forEach(languageCode => {
      console.log(`    ${languageCode}`);
    });
  });
  // [END tts_list_voices]
}

async function main() {
require(`yargs`) // eslint-disable-line
    .demand(1)
    .command(`list-voices`, `List supported voices.`, {}, () => listVoices())
    .example(`node $0 list-voices`)
    .wrap(120)
    .recommendCommands()
    .epilogue(
      `For more information, see https://cloud.google.com/text-to-speech/docs`
    )
    .help()
    .strict().argv;
}

main().catch(console.error);