poi/lib/webpack/transform-vue.js

const cssLoaders = require('./css-loaders')

module.exports = (config, { babel, cssOptions, vueOptions }) => {
  config.module
    .rule('vue')
      .test(/\.vue$/)
      .use('vue-loader')
        .loader('vue-loader')
        .options(Object.assign({
          postcss: cssOptions.postcss,
          cssModules: {
            localIdentName: '[name]__[local]___[hash:base64:5]',
            camelCase: true
          },
          loaders: Object.assign(cssLoaders.vue(cssOptions), {
            js: {
              loader: 'babel-loader',
              options: babel
            }
          })
        }, vueOptions))
}