google-tts-api/example/es6-generator.js

Google TTS (Text-To-Speech) for node.js

"use strict";
require('es6-promise').polyfill();

const co = require('co');   // npm install co
const fs = require('fs');
const path = require('path');
const http = require('http');
const https = require('https');
const urlParse  = require('url').parse;
const googleTTS = require('..');

function downloadFile (url, dest) {
  return new Promise((resolve, reject) => {
    const info = urlParse(url);
    const httpClient = info.protocol === 'https:' ? https : http;
    const options = {
      host: info.host,
      path: info.path,
      headers: {
        'user-agent': 'WHAT_EVER'
      }
    };

    httpClient.get(options, function(res) {
      // check status code
      if (res.statusCode !== 200) {
        reject(new Error(`request to ${url} failed, status code = ${res.statusCode} (${res.statusMessage})`));
        return;
      }

      const file = fs.createWriteStream(dest);
      file.on('finish', function() {
        // close() is async, call resolve after close completes.
        file.close(resolve);
      });
      file.on('error', function (err) {
        // Delete the file async. (But we don't check the result)
        fs.unlink(dest);
        reject(err);
      });

      res.pipe(file);
    })
    .on('error', function(err) {
      reject(err);
    })
    .end();
  });
}

// start
co(function * () {
  const url = yield googleTTS('hello');
  console.log(url); // https://translate.google.com/translate_tts?...

  const dest = path.resolve(__dirname, 'hello.mp3'); // file destination
  console.log(`Download to ${dest} ...`);

  yield downloadFile(url, dest);
  console.log('Download success');
})
.catch(err => console.error(err.stack));