function buildFile()

in scripts/build.js [79:119]

• 40 lines of code
• 7 McCabe index (conditional complexity)

function buildFile(file, silent) {
  const destPath = getBuildPath(file, BUILD_DIR);

  fs.mkdirSync(path.dirname(destPath), {recursive: true});
  if (micromatch.isMatch(file, IGNORE_PATTERN)) {
    silent ||
      process.stdout.write(
        chalk.dim('  \u2022 ') +
          path.relative(PACKAGES_DIR, file) +
          ' (ignore)\n'
      );
  } else if (!micromatch.isMatch(file, JS_FILES_PATTERN)) {
    fs.createReadStream(file).pipe(fs.createWriteStream(destPath));
    silent ||
      process.stdout.write(
        chalk.red('  \u2022 ') +
          path.relative(PACKAGES_DIR, file) +
          chalk.red(' \u21D2 ') +
          path.relative(PACKAGES_DIR, destPath) +
          ' (copy)' +
          '\n'
      );
  } else {
    const transformed = prettier.format(babel.transformFileSync(file, {}).code, {
      parser: 'babel',
    });
    fs.writeFileSync(destPath, transformed);
    const source = fs.readFileSync(file).toString('utf-8');
    if (/\@flow/.test(source)) {
      fs.createReadStream(file).pipe(fs.createWriteStream(destPath + '.flow'));
    }
    silent ||
      process.stdout.write(
        chalk.green('  \u2022 ') +
          path.relative(PACKAGES_DIR, file) +
          chalk.green(' \u21D2 ') +
          path.relative(PACKAGES_DIR, destPath) +
          '\n'
      );
  }
}