webpack-html-externals-cdn v0.0.5

  npm i --save-dev webpack-html-externals-cdn

  yarn add --dev webpack-html-externals-cdn

// 无需配置 webpack externals
// modules 为空则不会生效

const cdnEnv = process.env.NODE_ENV === 'development' ? 'development' : 'production.min'
new HtmlExternalsCdnPlugin({
  modules: [
    { name: 'react', _var: 'React', path: `umd/react.${cdnEnv}.js` },
    { name: 'react-dom', _var: 'ReactDOM', path: `umd/react-dom.${cdnEnv}.js` },
  ],
}),