前端工程化回顾-vite 构建神器

1.构建vite 项目

pnpm create vite

2.常用的配置：

1.公共资源路径配置：

 base: './',  默认是/

2.路径别名配置：

 resolve: {
    alias: {
      '@': path.resolve(__dirname, './src'),
      'ass': path.resolve(__dirname, './src/assets'),
      'comp': path.resolve(__dirname, './src/components')
    }
  },
    import WXl from "comp/HelloWorld.vue";

    import test from "@/components/HelloWorld.vue";

    import logo from "ass/logo.png";

3.文件省略后缀配置：

 extensions: ['.js', '.vue', '.json'] //引入对应的文件时可以忽略其后缀

4.生产环境log去除：

1.terser

 build: {
    minify: 'terser',
    terserOptions: {
      compress: {
        drop_console: true,
        drop_debugger: true
      }
    }

  }

2.vite-plugin-remove-console

pnpm i vite-plugin-remove-console -D

import removeConsole from 'vite-plugin-remove-console';
plugins: [vue(), removeConsole()),

5.图片压缩 viteImagemin

import viteImagemin from 'vite-plugin-imagemin'

viteImagemin({
    gifsicle: {
      optimizationLevel: 7,
      interlaced: false
    },
    optipng: {
      optimizationLevel: 7
    },
    mozjpeg: {
      quality: 20
    },
    pngquant: {
      quality: [0.8, 0.9],
      speed: 4
    },
    svgo: {
      plugins: [
        {
          name: 'removeViewBox'
        },
        {
          name: 'removeEmptyAttrs',
          active: false
        }
      ]
    }
  })

见下图效果

6、打包优化查看工具 rollup-plugin-visualizer

import { visualizer } from 'rollup-plugin-visualizer';
plugins: [vue(), removeConsole(), visualizer({ open: true }),

7.cdn优化打包提交

1.上一步6可以看出elemetuiplus 占用大量包体积

1.vite-plugin-cdn-import

下面vue等引用cdn资源

import importToCDN from 'vite-plugin-cdn-import'

 importToCDN({
    modules: [
      {
        name: "vue",
        var: "Vue",
        path: "https://unpkg.com/vue@3.2.31"
      },
      {
        name: "element-plus",
        var: "ElementPlus",
        path: "https://unpkg.com/element-plus@2.1.9",
        css: "https://unpkg.com/element-plus/dist/index.css"
      }
    ]
  },


  ),

完整配置文件如下：

import { defineConfig } from 'vite'
import vue from '@vitejs/plugin-vue'
import path from 'path'

import removeConsole from 'vite-plugin-remove-console';

import { visualizer } from 'rollup-plugin-visualizer';

import viteImagemin from 'vite-plugin-imagemin'


import importToCDN from 'vite-plugin-cdn-import'

import viteCompression from 'vite-plugin-compression'
// https://vitejs.dev/config/
export default defineConfig({
  plugins: [vue(), removeConsole(), visualizer({ open: true }),


  importToCDN({
    modules: [
      {
        name: "vue",
        var: "Vue",
        path: "https://unpkg.com/vue@3.2.31"
      },
      {
        name: "element-plus",
        var: "ElementPlus",
        path: "https://unpkg.com/element-plus@2.1.9",
        css: "https://unpkg.com/element-plus/dist/index.css"
      }
    ]
  },


  ),
  viteCompression({
    threshold: 1024 // 对大于 1mb 的文件进行压缩
  }),
  viteImagemin({
    gifsicle: {
      optimizationLevel: 7,
      interlaced: false
    },
    optipng: {
      optimizationLevel: 7
    },
    mozjpeg: {
      quality: 20
    },
    pngquant: {
      quality: [0.8, 0.9],
      speed: 4
    },
    svgo: {
      plugins: [
        {
          name: 'removeViewBox'
        },
        {
          name: 'removeEmptyAttrs',
          active: false
        }
      ]
    }
  })

  ],
  base: './',
  server: {
    host: '0.0.0.0',
    port: 8888,
    proxy: {

    }


  },
  resolve: {
    alias: {
      '@': path.resolve(__dirname, './src'),
      'ass': path.resolve(__dirname, './src/assets'),
      'comp': path.resolve(__dirname, './src/components')
    }
  },
  extensions: ['.js', '.vue', '.json'] // 引入对应的文件时可以忽略其后缀
  // build: {
  //   minify: 'terser',
  //   terserOptions: {
  //     compress: {
  //       drop_console: true,
  //       drop_debugger: true
  //     }
  //   }

  // }


})