vue项目首屏打开速度慢的解决方法

// webpack.prod.conf.js
if (config.build.bundleAnalyzerReport) {
 const BundleAnalyzerPlugin = require('webpack-bundle-analyzer').BundleAnalyzerPlugin
 webpackConfig.plugins.push(new BundleAnalyzerPlugin())
}
// config/index.js
build: {
 // Run the build mand with an extra argument to
 // View the bundle analyzer report after build finishes:
 // `npm run build --report`
 // Set to `true` or `false` to always turn it on or off
 bundleAnalyzerReport: process.env.npm_config_report
}

externals: {
  'vue': 'Vue',
  'element-ui': 'ELEMENT',
  'axios': 'axios'
 },