Rollup打包错误,onMounted中无法import？-灵析社区

RollupError: Invalid value "umd" for option "output.format" - UMD and IIFE output formats are not supported for code-splitting builds. 问题起因：vitepress内build的时候报错window is not defined,后查明是icon组件内iconfont.js有使用window。 改写为 import { computed, onMounted } from 'vue'; import './index.css'; // import './font/iconfont.js'; onMounted(() => { //@ts-ignore import('./font/iconfont.js').then(() => { }); }) rollup -c 打包会报错！！！ //rollup.config.js配置 module.exports = { input: './packages/index.ts', output: { name: 'XXXXXXX', file: file('umd'), format: 'umd' // 编译模式 }, plugins: [ nodeResolve(), typescript({ tsconfigOverride: overrides }), vuePlugin(), postcss({ plugins: [autoprefixer()], extract: 'style.css' }) ], external: ['vue'] // 依赖模块 }