.umirc.js

export default {
  plugins: [
    [
      'umi-plugin-react',
      {
        routes: {
          exclude: [/exclude/]
        },
        dynamicImport: {
          webpackChunkName: true,
          level: 2
        }
      }
    ]
  ],
  chainWebpack(config) {
    const src_path = __dirname
    const isSrc = path => path.indexOf('node_modules') === -1
    config.optimization.splitChunks({
      name: true,
      chunks: 'all',
      cacheGroups: {
        srcCommon: {
          name: 'src-common',
          priority: 9,
          minSize: 1,
          chunks: 'all',
          reuseExistingChunk: true,
          test(module) {
            if (!module || !isSrc(module.context)) {
              return false
            }

            console.log(module.context, ' -- --')
            return !isSrc(module.context)
          },
          minChunks: 2
        },
        verdors: {
          name: 'verdors',
          test: /[\\/]node_modules[\\/]/,
          chunks: 'all',
          priority: 1
        }
      }
    })
    return config
  }
}