docs: function copyFile(source, dest) {
  
    fs.stat(dest, function (err, stats) {
  
      // If there was an error that is NOT that the file doesn't exist, then throw it.
      if (err && err.code !== 'ENOENT') {
        throw new Error(err);
      }
  
      // If the file exists then skip it.
      if (typeof stats === 'object') {
        process.stdout.write(`File exists: skipping (${dest})\n`);
      }
  
      return fs.createReadStream(source)
        .pipe(fs.createWriteStream(dest));
  
    });
  
  }