module.exports = {
  sourceType: 'unambiguous',
  presets: [
    [
      '@babel/preset-env',
      {
        modules: false,
        useBuiltIns: 'entry',
        corejs: { version: 3, proposals: true },
        shippedProposals: true,
        targets: { ie: 9 }
      }
    ],
    ['@babel/preset-react']
  ],
  plugins: [
    ['@babel/plugin-syntax-dynamic-import'],
    ['@babel/plugin-syntax-class-properties'],
    ['@babel/plugin-proposal-decorators', { legacy: true }],
    [
      '@babel/plugin-transform-runtime',
      {
        corejs: { version: 3, proposals: true },
      }
    ],
    '@babel/plugin-proposal-optional-chaining',
    '@babel/plugin-proposal-class-properties',
    'transform-es2015-shorthand-properties',
    'lodash',
    ['import', { libraryName: 'antd', style: true }, 'antd'],
    [
      'transform-imports',
      {
        'uc-fun': {
          transform: 'uc-fun/src/${member}',
          preventFullImport: true
        }
      }
    ]
  ]
};