rollup.config.js

import resolve from '@rollup/plugin-node-resolve'
import commonjs from '@rollup/plugin-commonjs'
import ts from 'rollup-plugin-typescript2'
import path from 'path'
import packageJSON from './package.json'

const getPath = (_path) => path.resolve(__dirname, _path)

const extensions = ['.js', '.ts', '.tsx']

// // ts
const tsPlugin = ts({
  tsconfig: getPath('./tsconfig.esm.json'), // 导入本地ts配置
  extensions,
})

const resolvePlugin = resolve(extensions)
const commonjsPlugin = commonjs()

const commonConf = {
  input: getPath('./src/index.ts'),
  plugins: [tsPlugin, resolvePlugin],
  output: {
    name: packageJSON.name,
  },
}
const preOutName = 'utils'
const output = (type, preName = preOutName) =>
  path.resolve(__dirname, 'lib', `${preName}.${type}.js`)

const OutputFormat = {
  //  异步模块定义，用于像RequireJS这样的模块加载器
  AMD: 'amd',
  //CommonJS，适用于 Node 和 Browserify/Webpack
  CJS: 'cjs',
  ESM: 'esm',
  IIFE: 'iife',
  UMD: 'umd',
  SYSTEM: 'system',
}
function genOutPut(type) {
  return {
    output: {
      format: type,
      file: output(type),
    },
  }
}

const builds = [
  {
    output: {
      file: packageJSON.main,
      format: OutputFormat.CJS,
    },
  },
  {
    output: {
      file: packageJSON.module,
      format: OutputFormat.ESM,
    },
  },
  {
    output: {
      name: packageJSON.name,
      file: packageJSON.unpkg,
      format: OutputFormat.UMD,
    },
  },
  {
    output: {
      file: packageJSON.jsdelivr,
      format: OutputFormat.IIFE,
    },
  },
  genOutPut(OutputFormat.AMD),
  genOutPut(OutputFormat.SYSTEM),
]

const buildConf = (options) => {
  return {
    ...commonConf,
    ...options,
  }
}

export default builds.map((output) => {
  return buildConf(output)
})