@wgoo/cli/lib/config/babel.config.js

Wgoo Cli 是一个 React 组件库构建工具，通过 Wgoo Cli 可以快速搭建一套功能完备的 React 组件库。

/**
 * options = { loose?: boolean; enableObjectSlots?: boolean; }
 */
module.exports = function (api, options) {
  if (api) {
    api.cache.never();
  }

  const { BABEL_MODULE, NODE_ENV } = process.env;
  const isTest = NODE_ENV === 'test';
  const useESModules = BABEL_MODULE !== 'commonjs' && !isTest;

  return {
    presets: [
      [
        '@babel/preset-env',
        {
          modules: useESModules ? false : 'commonjs',
          loose: options.loose,
        },
      ],
      '@babel/preset-react',
    ],
    plugins: [
      [
        '@babel/plugin-transform-runtime',
        {
          corejs: false,
          useESModules,
        },
      ],
      ["@babel/plugin-proposal-decorators", { legacy: true }],
      ['@babel/plugin-proposal-class-properties', { loose: true }],
      ['@babel/plugin-proposal-private-methods', { loose: true }],
      'transform-commonjs',
    ],
  };
};