Version

3.1.5

Reproduction link

https://github.com/frandiox/vite-vue-bundle-issue

Steps to reproduce

yarn && yarn build && yarn test

What is expected?

It should create a functional SSR bundle.

What is actually happening?

The created SSR bundle is missing ssrUtils so the app crashes since it tries to read a property of null. It is likely related to this line: https://github.com/vuejs/vue-next/blob/3a75d5d6942a1743789192dca9161f7c30a71e58/packages/runtime-core/src/index.ts#L316

SSR bundle is useful for environments such as workers, where there is no import or require at run time. The bundle is generated correctly using Webpack or ESBuild but I could not make it work with Vite.

A related problem is that Vue imports Node's stream at the top of the bundle (it is used when calling renderToStream), which crashes the worker. It is currently necessary mocking the stream module in the bundler.