function build()

in scripts/build.js [128:147]


function build(previousSizeMap) {
  console.log('Creating an optimized production build...');
  webpack(config).run((err, stats) => {
    if (err) {
      console.error('Failed to create a production build. Reason:');
      console.error(err.message || err);
      process.exit(1);
    }

    console.log(chalk.green('Compiled successfully.'));
    console.log();

    console.log('File sizes after gzip:');
    console.log();
    printFileSizes(stats, previousSizeMap);
    console.log();

    console.log('The project is now ready to be published to npm.');
  });
}