1、初始化项目

vue.config.js

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+'use strict'
+const path = require('path')
+const CompressionPlugin = require('compression-webpack-plugin')// 引入gzip压缩插件
+const defaultSettings = require('./src/settings.js')
+
+function resolve(dir) {
+  return path.join(__dirname, dir)
+}
+
+const name = defaultSettings.title || 'vue Element Admin' // page title
+
+// If your port is set to 80,
+// use administrator privileges to execute the command line.
+// For example, Mac: sudo npm run
+// You can change the port by the following method:
+// port = 9527 npm run dev OR npm run dev --port = 9527
+const port = process.env.port || process.env.npm_config_port || 9527 // dev port
+
+const MonacoWebpackPlugin = require('monaco-editor-webpack-plugin')
+
+// All configuration item explanations can be find in https://cli.vuejs.org/config/
+module.exports = {
+  /**
+   * You will need to set publicPath if you plan to deploy your site under a sub path,
+   * for example GitHub Pages. If you plan to deploy your site to https://foo.github.io/bar/,
+   * then publicPath should be set to "/bar/".
+   * In most cases please use '/' !!!
+   * Detail: https://cli.vuejs.org/config/#publicpath
+   */
+  publicPath: '/',
+  outputDir: 'dist',
+  // assetsDir: '../../static/admin',
+  // assetsDir: '/',
+  lintOnSave: process.env.NODE_ENV === 'development',
+  productionSourceMap: false,
+  devServer: {
+    port: port,
+    open: false,
+    overlay: {
+      warnings: false,
+      errors: true
+    }
+  },
+  configureWebpack: {
+    plugins: [
+      new CompressionPlugin({
+        algorithm: 'gzip',
+        test: /\.js$|\.html$|\.css/, // 匹配文件名
+        threshold: 10240, // 对超过10kb的数据进行压缩
+        deleteOriginalAssets: false, // 是否删除原文件
+        minRatio: 0.8
+      }),
+      new MonacoWebpackPlugin()
+    ],
+    name: name,
+    resolve: {
+      alias: {
+        '@': resolve('src')
+      }
+    }
+  },
+  chainWebpack(config) {
+    // it can improve the speed of the first screen, it is recommended to turn on preload
+    // config.plugins.delete('preload')
+
+    // when there are many pages, it will cause too many meaningless requests
+    config.plugins.delete('prefetch') //
+
+    config.module
+      .rule('svg')
+      .exclude.add(resolve('src/icons'))
+      .end()
+    config.module
+      .rule('icons')
+      .test(/\.svg$/)
+      .include.add(resolve('src/icons'))
+      .end()
+      .use('svg-sprite-loader')
+      .loader('svg-sprite-loader')
+      .options({
+        symbolId: 'icon-[name]'
+      })
+      .end()
+
+    // set preserveWhitespace
+    config.module
+      .rule('vue')
+      .use('vue-loader')
+      .loader('vue-loader')
+      .tap(options => {
+        options.compilerOptions.preserveWhitespace = true
+        return options
+      })
+      .end()
+
+    config
+      .when(process.env.NODE_ENV === 'development',
+        config => config.devtool('cheap-source-map')
+      )
+
+    config
+      .when(process.env.NODE_ENV !== 'development',
+        config => {
+          config
+            .plugin('ScriptExtHtmlWebpackPlugin')
+            .after('html')
+            .use('script-ext-html-webpack-plugin', [{
+              // `runtime` must same as runtimeChunk name. default is `runtime`
+              inline: /runtime\..*\.js$/
+            }])
+            .end()
+          config
+            .optimization.splitChunks({
+              chunks: 'all',
+              cacheGroups: {
+                libs: {
+                  name: 'chunk-libs',
+                  test: /[\\/]node_modules[\\/]/,
+                  priority: 10,
+                  chunks: 'initial' // only package third parties that are initially dependent
+                },
+                elementUI: {
+                  name: 'chunk-elementUI', // split elementUI into a single package
+                  priority: 20, // the weight needs to be larger than libs and app or it will be packaged into libs or app
+                  test: /[\\/]node_modules[\\/]_?element-ui(.*)/ // in order to adapt to cnpm
+                },
+                commons: {
+                  name: 'chunk-commons',
+                  test: resolve('src/components'), // can customize your rules
+                  minChunks: 3, //  minimum common number
+                  priority: 5,
+                  reuseExistingChunk: true
+                }
+              }
+            })
+          config.optimization.runtimeChunk('single')
+        }
+      )
+  },
+  css: {
+    loaderOptions: {
+      less: {
+        modifyVars: {
+          // less vars，customize ant design theme
+
+          // 'primary-color': '#F5222D',
+          // 'link-color': '#F5222D',
+          'border-radius-base': '2px'
+        },
+        // DO NOT REMOVE THIS LINE
+        javascriptEnabled: true
+      }
+    }
+  }
+}