const fs = require('fs');
const F = 'utils/brand-colors.js';
let s = fs.readFileSync(F, 'utf8');
const marker = 'export const primaryPale';
if (s.includes(marker)) {
  console.log('already present');
  process.exit(0);
}
const add = [
  '',
  '// 具名快捷导出（历史写法：页面按名引入，如 import { body, primary } from ...；与 BrandColors.xxx 等价）',
  'export const primaryPale = BrandColors.primaryPale',
  'export const body = BrandColors.body',
  'export const primary = BrandColors.primary',
  'export const success = BrandColors.success',
  'export const white = BrandColors.white',
  'export const wisdom = BrandColors.wisdom',
  'export const danger = BrandColors.danger',
  '',
].join('\n');
s = s.replace(/\s*$/, '\n') + add;
fs.writeFileSync(F, s, 'utf8');
console.log('appended; len', s.length);