webpack.client.config.js

const webpack = require('webpack')
const merge = require('webpack-merge')
const base = require('./webpack.base.config')
const SWPrecachePlugin = require('sw-precache-webpack-plugin')
const VueSSRClientPlugin = require('vue-server-renderer/client-plugin')

const config = merge(base, {
  entry: {
    app: './src/entry-client.js'
  },
  resolve: {
    alias: {
      'create-api': './create-api-client.js'
    }
  },
  plugins: [
    // strip dev-only code in Vue source
    new webpack.DefinePlugin({
      'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV || 'development'),
      'process.env.VUE_ENV': '"client"'
    }),

    new VueSSRClientPlugin()
  ],
  optimization:{
        runtimeChunk: {
            name: "manifest"
        },
      // extract webpack runtime & manifest to avoid vendor chunk hash changing
      // on every build.
      // extract vendor chunks for better caching
        splitChunks:{
            chunks:"initial",
            cacheGroups: {
                vendors: function (module) {
                    // a module is extracted into the vendor chunk if...
                    return (
                        // it's inside node_modules
                        /node_modules/.test(module.context) &&
                        // and not a CSS file (due to extract-text-webpack-plugin limitation)
                        !/\.css$/.test(module.request)
                    )
                }
            }
        }
    },
})

if (process.env.NODE_ENV === 'production') {
  config.plugins.push(
    // auto generate service worker
    new SWPrecachePlugin({
      cacheId: 'vue-hn',
      filename: 'service-worker.js',
      minify: true,
      dontCacheBustUrlsMatching: /./,
      staticFileGlobsIgnorePatterns: [/\.map$/, /\.json$/],
      runtimeCaching: [
        {
          urlPattern: '/',
          handler: 'networkFirst'
        },
        {
          urlPattern: /\/(top|new|show|ask|jobs)/,
          handler: 'networkFirst'
        },
        {
          urlPattern: '/item/:id',
          handler: 'networkFirst'
        },
        {
          urlPattern: '/user/:id',
          handler: 'networkFirst'
        }
      ]
    })
  )
}

module.exports = config