| 53 | } |
| 54 | }, |
| 55 | chainWebpack(config) { |
| 56 | // it can improve the speed of the first screen, it is recommended to turn on preload |
| 57 | config.plugin('preload').tap(() => [ |
| 58 | { |
| 59 | rel: 'preload', |
| 60 | // to ignore runtime.js |
| 61 | // https://github.com/vuejs/vue-cli/blob/dev/packages/@vue/cli-service/lib/config/app.js#L171 |
| 62 | fileBlacklist: [/\.map$/, /hot-update\.js$/, /runtime\..*\.js$/], |
| 63 | include: 'initial' |
| 64 | } |
| 65 | ]) |
| 66 | |
| 67 | // when there are many pages, it will cause too many meaningless requests |
| 68 | config.plugins.delete('prefetch') |
| 69 | |
| 70 | // set svg-sprite-loader |
| 71 | config.module |
| 72 | .rule('svg') |
| 73 | .exclude.add(resolve('src/icons')) |
| 74 | .end() |
| 75 | config.module |
| 76 | .rule('icons') |
| 77 | .test(/\.svg$/) |
| 78 | .include.add(resolve('src/icons')) |
| 79 | .end() |
| 80 | .use('svg-sprite-loader') |
| 81 | .loader('svg-sprite-loader') |
| 82 | .options({ |
| 83 | symbolId: 'icon-[name]' |
| 84 | }) |
| 85 | .end() |
| 86 | |
| 87 | config |
| 88 | .when(process.env.NODE_ENV !== 'development', |
| 89 | config => { |
| 90 | config |
| 91 | .plugin('ScriptExtHtmlWebpackPlugin') |
| 92 | .after('html') |
| 93 | .use('script-ext-html-webpack-plugin', [{ |
| 94 | // `runtime` must same as runtimeChunk name. default is `runtime` |
| 95 | inline: /runtime\..*\.js$/ |
| 96 | }]) |
| 97 | .end() |
| 98 | config |
| 99 | .optimization.splitChunks({ |
| 100 | chunks: 'all', |
| 101 | cacheGroups: { |
| 102 | libs: { |
| 103 | name: 'chunk-libs', |
| 104 | test: /[\\/]node_modules[\\/]/, |
| 105 | priority: 10, |
| 106 | chunks: 'initial' // only package third parties that are initially dependent |
| 107 | }, |
| 108 | elementUI: { |
| 109 | name: 'chunk-elementUI', // split elementUI into a single package |
| 110 | priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app |
| 111 | test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm |
| 112 | }, |