rollup.config.js

// 通过 rollup进行打包

//（1）引入相关依赖
import ts from 'rollup-plugin-typescript2' //解析  ts
import json from '@rollup/plugin-json'
import resolvePlugin from '@rollup/plugin-node-resolve' //解析 第三方 插件
import path from 'path' // 处理路径
//（2）获取文件路径
let packagesDir = path.resolve(__dirname,'packages') //

// 2.1 获取需要打包的包
const packageDir = path.resolve(packagesDir, process.env.TARGET)
//2.2 打包获取到 每个包的项目配置
const resolve = p => path.resolve(packageDir, p)
const pkg = require(resolve(`package.json`)) //获取 json
const name =  path.basename(packageDir)
console.log(name,6666) //注意

//3创建一个 表
const outputOpions ={
    "esm-bundler":{
       file:resolve(`dist/${name}.esm-bundler.js`) ,
       format:'es'
    },
    "cjs":{
        file:resolve(`dist/${name}.cjs.js`) ,
        format:'cjs'
     },
     "global":{
        file:resolve(`dist/${name}.global.js`) ,
        format:'iife'
     }

}
const options = pkg.buildOptions
 
 function createConfig(format,output){
   //进行打包
   console.log()
   output.name = options.name
   output.sourcemap = true
   //生成rollup配置
   return  {
       input:resolve('src/index.ts'), //导入
       output,
       plugins:[
           json(),
           ts({ //解析 ts 
               tsconfig:path.resolve(__dirname,'tsconfig.json')
           }),
           resolvePlugin() //解析 第三方 插件
       ]
   }
 }
 //rullup 需要 导出一个配置
 
 export default options.formats.map(format=>createConfig(format,outputOpions[format]))