Bug: Cannot read property __SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED of undefined

[code913]

I got this issue when using react in deno deploy, but i think it will still throw this error in nodejs

Code: https://github.com/code913/react-ssr-deno

React version: 17.0.2 react-dom, react version latest

Steps To Reproduce

1. Import react-dom from the umd production or development url (havent tested others): https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.min.js
2. Try to hydrate some data from react-dom/server

[code913]

Oh btw if you wanna see this in action go here: https://react-ssr-deno-b539c876.deno.dev

[lucacasonato]

This issue is invalid. OP is not importing "react".

[bvaughn]

__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED is a property of the React export. The error message indicates that React isn't being imported or bundled with the app you're referring to.

The source code of the application you linked to tries to find React as a global:

require("react")

Looking at your source though, you're only including react-dom:

<script src="https://cdnjs.cloudflare.com/ajax/libs/react-dom/17.0.2/umd/react-dom.development.min.js" integrity="sha512-aNBFq6ue8EmNDwVD/l0mWFy3iVZLIxtQaD7fEYBn3HluJer36T1AhJK0THj6MKKfhZrexxWsKX1T16TxLZo6uQ==" crossorigin="anonymous"></script>

You'll need to add a <script> tag for React too, and load it before react-dom.