rollup3.x+vue2打包组件的实现

import { defineConfig } from 'rollup'
import vue from 'rollup-plugin-vue'
import { cleandir } from 'rollup-plugin-cleandir'
import { babel } from '@rollup/plugin-babel';
import postcss from 'rollup-plugin-postcss'

export default defineConfig({
  input: './src/index.js',
  output: [
    {
      file: 'lib/index.esm.js',
      format: 'esm',
      exports: 'named'
    },
    {
      file: 'lib/index.umd.js',
      format: 'umd',
      name: 'w'
    }
  ],
  plugins: [
    cleandir('lib'),
    vue({}),
    babel({
      exclude: 'node_modules/**',
      presets: ['@vue/babel-preset-jsx'],
     // bundled-需要显示指明babelHelpers 配置， 没配置，控制台有一些warning
      babelHelpers: 'bundled',
      // 5.2.1 是可以不用配置  extensions
      // 5.2.2 以后 需要将 vue配置进去
      // extensions:['.js', '.jsx', '.es6', '.es', '.mjs','.vue'],
    }),
    // 需要处理vue中的css
    postcss()
  ],
  external: [
    "Vue"
  ]
})

import { defineConfig } from 'rollup'
import vue from 'rollup-plugin-vue'
import { cleandir } from 'rollup-plugin-cleandir'
import { babel } from '@rollup/plugin-babel';
import postcss from 'rollup-plugin-postcss'

export default defineConfig({
  input: './src/index.js',
  output: [
    {
      file: 'lib/index.esm.js',
      format: 'esm',
      exports: 'named'
    },
    {
      file: 'lib/index.umd.js',
      format: 'umd',
      name: 'w'
    }
  ],
  plugins: [
    cleandir('lib'),
    vue({
    }),
    babel({
      // @rollup/plugin-babel 6.0.3 如果使用 filter 就注释掉 exclude - 互斥的
      // exclude: 'node_modules/**',
      presets: ['@vue/babel-preset-jsx'],
      // 需要显示指明babelHelpers 配置， 没配置，控制台有一些warning
      babelHelpers: 'bundled',
      // 5.2.1 是不需要配置 extensions 的
      // 5.2.2 以后 需要将 vue配置进去
      extensions:['.js', '.jsx', '.es6', '.es', '.mjs','.vue'],

      // filter @rollup/plugin-babel 在 5.3.0 版本才有
      // filter配置和 exclude 配置是互斥的，需要自己去实现去掉 node_modules的过滤
      filter: id=>{
        return /(\.js|\.jsx|\.es6|\.es|\.mjs)$/.test(id) && !/node_modules/.test(id)
      }
    }),

    // 处理 vue中的 css
    postcss()
  ],
  external: [
    "Vue"
  ]
})

{
  "name": "chapter-08",
  "version": "1.0.0",
  "description": "",
  "main": "lib/index.js",
  "module": "lib/index.esm.js",
  "type": "module",
  "scripts": {
    "build": "rollup -c"
  },
  "devDependencies": {
    "@babel/core": "^7.21.3",
    "@rollup/plugin-babel": "^6.0.3",
    "@vue/babel-helper-vue-jsx-merge-props": "^1.4.0",
    "@vue/babel-preset-jsx": "^1.4.0",
    "postcss": "^8.4.21",
    "rollup": "^3.20.0",
    "rollup-plugin-cleandir": "^2.0.0",
    "rollup-plugin-postcss": "^4.0.2",
    "rollup-plugin-vue": "^5.1.9",
    "vue": "2.7.10",
    "vue-template-compiler": "2.7.10"
  }
}