Module format "cjs" does not support top-level await. Use the "es" or "system" output formats rather.

[Vladislav-Lukyanuk]

Hi! If I try to build a cjs code using

build: {
    outDir: './dist',
    modulePreload: false,
    minify: false,
    cssCodeSplit: true,
    assetsDir: '',

    rollupOptions: {
      output: {
        format: 'commonjs',
      }
    }
  },

I got the error Module format "cjs" does not support top-level await. Use the "es" or "system" output formats rather. from node_modules/__mf__virtual/xxx__loadShare__react__loadShare__

;() => import("__mf__virtual/xxx__prebuild__react__prebuild__.js").catch(() => {});
// dev uses dynamic import to separate chunks

const {loadShare} = require("@module-federation/runtime")
const {initPromise} = require("__mf__virtual/xxx__mf_v__runtimeInit__mf_v__.js")
const res = initPromise.then(_ => loadShare("react", {
customShareInfo: {shareConfig:{
  singleton: true,
  strictVersion: false,
  requiredVersion: "17.0.2"
}}}))
const exportModule = await res.then(factory => factory())
module.exports = exportModule

It seems to me comes from runtime code generation by library. Can I build __mf__virtual using cjs ?

[gioboa]

Hi @Vladislav-Lukyanuk
No it's not working, I'm sorry.
Is cjs mandatory for you?

[momotofu]

I'm using @module-federation/vite and it which uses a mix of ESM and CommonJS patterns. At the moment, CJS is mandatory.