webpack在Vue项目当中的应用(2)-生产模式

基本使用:

  1. 下载vue-loader(已下载过就不需要重新下载)
npm install -D vue-loader vue-template-compiler
  1. 下载其他的依赖(plugin , loader等..)(已下载过就不需要重新下载)
什么插件没下就下什么插件
npm i mini-css-extract-plugin css-minimizer-webpack-plugin terser-webpack-plugin image-minimizer-webpack-plugin -D

npm install imagemin-gifsicle imagemin-jpegtran imagemin-optipng imagemin-svgo -D

npm install imagemin-gifsicle imagemin-mozjpeg imagemin-pngquant imagemin-svgo -D

npm i copy-webpack-plugin -D
  1. 配置webpack.prod.js文件
// webpack.prod.js
const path = require("path");
const ESLintWebpackPlugin = require("eslint-webpack-plugin");
const HtmlWebpackPlugin = require("html-webpack-plugin");
const MiniCssExtractPlugin = require("mini-css-extract-plugin");//css压缩插件
const CssMinimizerPlugin = require("css-minimizer-webpack-plugin");//css压缩插件
const TerserWebpackPlugin = require("terser-webpack-plugin");//内置语法插件
const ImageMinimizerPlugin = require("image-minimizer-webpack-plugin");//图片压缩插件
const CopyPlugin = require("copy-webpack-plugin")
const { VueLoaderPlugin } = require("vue-loader");
const { DefinePlugin } = require("webpack");//webpack中专门用于定义环境变量的插件

const getStyleLoaders = (preProcessor) => {
  return [
    MiniCssExtractPlugin.loader,
    "css-loader",
    {
      loader: "postcss-loader",
      options: {
        postcssOptions: {
          plugins: [
            "postcss-preset-env", // 能解决大多数样式兼容性问题
          ],
        },
      },
    },
    preProcessor,
  ].filter(Boolean);
};

module.exports = {
  entry: "./src/main.js",
  output: {
    path: undefined,
    filename: "static/js/[name].[contenthash:10].js",
    chunkFilename: "static/js/[name].[contenthash:10].chunk.js",
    assetModuleFilename: "static/js/[hash:10][ext][query]",
    clean: true,
  },
  module: {
    rules: [
      {
        // 用来匹配 .css 结尾的文件
        test: /\.css$/,
        // use 数组里面 Loader 执行顺序是从右到左
        use: getStyleLoaders(),
      },
      {
        test: /\.less$/,
        use: getStyleLoaders("less-loader"),
      },
      {
        test: /\.(png|jpe?g|gif|svg)$/,
        type: "asset",
        parser: {
          dataUrlCondition: {
            maxSize: 10 * 1024, // 小于10kb的图片会被base64处理
          },
        },
      },
      {
        test: /\.(ttf|woff2?)$/,
        type: "asset/resource",
      },
      {
        test: /\.(jsx|js)$/,
        include: path.resolve(__dirname, "../src"),
        loader: "babel-loader",
        options: {
          cacheDirectory: true,
          cacheCompression: false,
          plugins: [
            // "@babel/plugin-transform-runtime" // presets中包含了
          ],
        },
      },
      // vue-loader不支持oneOf
      {
        test: /\.vue$/,
        loader: "vue-loader", // 内部会给vue文件注入HMR功能代码
        options: {
          // 开启缓存
          cacheDirectory: path.resolve(
            __dirname,
            "node_modules/.cache/vue-loader"
          ),
        },
      },
    ],
  },
  plugins: [
    new ESLintWebpackPlugin({
      context: path.resolve(__dirname, "../src"),
      exclude: "node_modules",
      cache: true,
      cacheLocation: path.resolve(
        __dirname,
        "../node_modules/.cache/.eslintcache"
      ),
    }),
    new HtmlWebpackPlugin({
      template: path.resolve(__dirname, "../public/index.html"),
    }),
    new CopyPlugin({
      patterns: [
        {
          from: path.resolve(__dirname, "../public"),
          to: path.resolve(__dirname, "../dist"),
          toType: "dir",
          noErrorOnMissing: true,
          globOptions: {
            ignore: ["**/index.html"],
          },
          info: {
            minimized: true,
          },
        },
      ],
    }),
    new MiniCssExtractPlugin({
      filename: "static/css/[name].[contenthash:10].css",
      chunkFilename: "static/css/[name].[contenthash:10].chunk.css",
    }),
    new VueLoaderPlugin(),
    new DefinePlugin({
      __VUE_OPTIONS_API__: "true",
      __VUE_PROD_DEVTOOLS__: "false",
    }),
  ],
  optimization: {
    // 压缩的操作
    minimizer: [
      new CssMinimizerPlugin(),
      new TerserWebpackPlugin(),
      new ImageMinimizerPlugin({
        minimizer: {
          implementation: ImageMinimizerPlugin.imageminGenerate,
          options: {
            plugins: [
              ["gifsicle", { interlaced: true }],
              ["jpegtran", { progressive: true }],
              ["optipng", { optimizationLevel: 5 }],
              [
                "svgo",
                {
                  plugins: [
                    "preset-default",
                    "prefixIds",
                    {
                      name: "sortAttrs",
                      params: {
                        xmlnsOrder: "alphabetical",
                      },
                    },
                  ],
                },
              ],
            ],
          },
        },
      }),
    ],
    splitChunks: {
      chunks: "all",
    },
    runtimeChunk: {
      name: (entrypoint) => `runtime~${entrypoint.name}`,
    },
  },
  resolve: {
    extensions: [".vue", ".js", ".json"],
  },
  mode: "production",
  devtool: "source-map",
};
  1. 配置.eslintrc.js文件
// Eslint语法检查
module.exports = {
    root: true,
    env: {
      node: true,//启用node的环境变量
    },
    extends: ["plugin:vue/vue3-essential", "eslint:recommended"],//继承vue3的官方规则和eslint默认的规则
    parserOptions: {
      parser: "@babel/eslint-parser",//解析选项使用babel
    },
  };
  1. 配置babel.config.js文件
module.exports = {
    presets: ["@vue/cli-plugin-babel/preset"],//预设使用vue团队的即可
};
  1. 随便配置点Vue代码
  • main.js
// 使用的是Vue3
import { createApp } from "vue"//引入 createApp
import App from './App' 

// 引入路由
import router from './router'

// 创建app并挂载到对应的元素上
createApp(App).use(router).mount(document.getElementById("app"));
  • router.js
import {createRouter , createWebHistory} from 'vue-router'

// 路由懒加载
const Home = () => import('../views/Home')
const About = () => import('../views/About')

export default createRouter({
    // 路由模式
    history: createWebHistory(),
    // 路由规则配置
    routes:[
        {
            path: '/home',
            component: Home
        },
        {
            path: '/about',
            component: About
        }
    ]
})
  • App.vue
<template>
    <h1 class="app">hello! App</h1>
    <Home/>

    <router-link to="/home">Home</router-link><br><br>
    <router-link to="/about">About</router-link>

    <!-- 路由显示 -->
    <router-view></router-view>
</template>

<script>
    import Home from './views/Home.vue'
    export default {
        name: "App",
        components:{
            Home,
        }
    }
</script>

<style scoped>
    .app{
        color: aqua;
    }
</style>
  1. 配置运行指令(再package.json中)
"scripts": {
  "start": "npm run dev",
  "dev": "cross-env NODE_ENV=development webpack serve --config ./config/webpack.dev.js",
  "build": "cross-env NODE_ENV=production webpack --config ./config/webpack.prod.js"
},
  1. 初始化项目以及运行指令
# 初始化项目
npm init -y

# 打包项目
npm build

结果展示:(可以成功运行)

image