function makeRequireCodeForPolyfill(module) {
  return `require("../../../../node_modules/core-js/modules/${module}")`;
}
/main.bundle.browserify.min.js`)) {
      const size = fs.readFileSync(bundle).length;
      variants.push({name: path.relative(variantGroupFolder, bundle), size});
    }

    const maxNumberChars = Math.ceil(Math.max(...variants.map(v => Math.log10(v.size))));
    variants.sort((a, b) => {
      const sizeDiff = b.size - a.size;
      if (sizeDiff !== 0) return sizeDiff;
      return b.name.localeCompare(a.name);
    });
    for (const variant of variants) {
      // Line up the digits.
      const sizeField = `${variant.size}`.padStart(maxNumberChars);
      // Buffer of 12 characters so a new entry with more digits doesn't change every line.
      lines.push(`  ${sizeField.padEnd(12)} ${variant.name}`);
    }
    lines.push('');
  }

  fs.writeFileSync(`${scriptDir}/summary-sizes.txt`, lines.join('\n'));
}

/**
@param {string} module