之前项目大部分把打包配置揉在一个文件， dev、预发布、生成环境都共用一个配置，或根据变量判断， 这几个一直在优化项目通过 mergeConfig 合并不同的配置

目录结构

image.png

基础配置

import { resolve } from 'path';
import { defineConfig } from 'vite';
import vue from '@vitejs/plugin-vue';
import vueJsx from '@vitejs/plugin-vue-jsx';
import svgLoader from 'vite-svg-loader';

export default defineConfig({
  plugins: [vue(), vueJsx(), svgLoader({ svgoConfig: {} })],
  resolve: {
    alias: [
      {
        find: '@',
        replacement: resolve(__dirname, '../src'),
      },
      {
        find: 'assets',
        replacement: resolve(__dirname, '../src/assets'),
      },

      {
        find: 'vue',
        replacement: 'vue/dist/vue.esm-bundler.js', // compile template
      },
    ],
    extensions: ['.ts', '.js'],
  },
  define: {
    'process.env': {},
  },
  css: {
    preprocessorOptions: {
      less: {
        modifyVars: {
          hack: `true; @import (reference) "${resolve(
            'src/assets/style/breakpoint.less'
          )}";`,
        },
        javascriptEnabled: true,
      },
    },
  },
});

生产环境和dev 环境

dev

import { mergeConfig } from 'vite';
import eslint from 'vite-plugin-eslint';
import baseConfig from './vite.config.base';
import createSvgIcon from './plugin/svg-icon';

export default mergeConfig(
  {
    mode: 'development',
    server: {
      open: true,
  
    },
    plugins: [
      eslint({
        cache: false,
        include: ['src/**/*.ts', 'src/**/*.tsx', 'src/**/*.vue'],
        exclude: ['node_modules'],
      }),
      createSvgIcon(false),
    ],
  },
  baseConfig
);

生产

import { mergeConfig } from 'vite';
import baseConfig from './vite.config.base';
import configCompressPlugin from './plugin/compress';
import configVisualizerPlugin from './plugin/visualizer';
import configArcoResolverPlugin from './plugin/arcoResolver';
import configStyleImportPlugin from './plugin/styleImport';
import configImageminPlugin from './plugin/imagemin';
import createSvgIcon from './plugin/svg-icon';

export default mergeConfig(
  {
    mode: 'production',
    plugins: [
      configCompressPlugin('gzip'),
      configVisualizerPlugin(),
      configArcoResolverPlugin(),
      configStyleImportPlugin(),
      configImageminPlugin(),
      createSvgIcon(true),
    ],
    build: {
      rollupOptions: {
        output: {
          manualChunks: {
            arco: ['@arco-design/web-vue'],
            chart: ['echarts', 'vue-echarts'],
            vue: ['vue', 'vue-router', 'pinia', '@vueuse/core', 'vue-i18n'],
          },
        },
      },
      chunkSizeWarningLimit: 2000,
    },
  },
  baseConfig
);

package.json

  "scripts": {
    "dev": "vite --config ./config/vite.config.dev.ts",
    "build": "vue-tsc --noEmit && vite build --config ./config/vite.config.prod.ts",
    "report": "cross-env REPORT=true npm run build",
    "preview": "npm run build && vite preview --host",
 
  },

最后

这种代码组织方式结构清晰， 做到了低耦合， 可扩展性也高。。本文主要是让自己，通过某个功能对自己代码进行review和重实现来提高代码质量，希望各位大佬多多指点