[docs] Adding `prepend: true` to emotion cache breaks remix example

Duplicates

• I have searched the existing issues

Latest version

• I have tested the latest version

Current behavior 😯

Adding prepend: true to the emotion cache used in the remix-with-typescript example to modify the injection order of mui styles and global css styles causes DOMExceptions.

Removing CssBaseline from entry.client.tsx will remove the DOMException, but the hydration warning remains.

Moving the style tag generator in root.tsx also does not help to remove the hydration warning.

Expected behavior 🤔

Expected the mui styles to move from the bottom of the head element to the top of the head element, and the DOM to render without exceptions.

Steps to reproduce 🕹

Steps:

1. Clone the https://github.com/mui-org/material-ui/blob/master/examples/remix-with-typescript/ example
2. Add the prepend: true option to createCache in https://github.com/mui-org/material-ui/blob/master/examples/remix-with-typescript/app/src/createEmotionCache.ts

import createCache from '@emotion/cache';

export default function createEmotionCache() {
  return createCache({ key: 'css', prepend: true });
}

1. npm install, npm run dev and open in the browser

Context 🔦

Trying to reduce the precedence of mui when interoperating with other style methods (e.g. using global styles)

Your environment 🌎

`npx @mui/envinfo`

 System:
    OS: Linux 4.4 Ubuntu 18.04.4 LTS (Bionic Beaver)
  Binaries:
    Node: 16.13.0 - ~/.nvm/versions/node/v16.13.0/bin/node
    Yarn: 1.22.10 - /mnt/c/Program Files (x86)/Yarn/bin/yarn
    npm: 8.1.0 - ~/.nvm/versions/node/v16.13.0/bin/npm
  Browsers:
    Chrome: Not Found
    Firefox: Not Found
  npmPackages:
    @emotion/react: latest => 11.7.1 
    @emotion/styled: latest => 11.6.0 
    @mui/base:  5.0.0-alpha.61 
    @mui/material: latest => 5.2.5 
    @mui/private-theming:  5.2.3 
    @mui/styled-engine:  5.2.5 
    @mui/system:  5.2.5 
    @mui/types:  7.1.0 
    @mui/utils:  5.2.3 
    @types/react: latest => 17.0.37 
    react: latest => 17.0.2 
    react-dom: latest => 17.0.2 
    typescript: latest => 4.5.4 

Browser used: Firefox

[mnajdova]

@ShuPink there is definitely some issue with the Remix example, e. g. https://github.com/mui/material-ui/issues/31957. I will need to dive deeper before I can share any update.

[ShuPink]

@mnajdova I’m not sure why I can’t see your reply here… so I guess I’ll just look like I’m talking to myself 😅 .

Sorry for not being very clear, I was trying to make my global/shared styles take precedence over mui’s because mui’s styles would override them. Hopefully this picture might make it clearer: green = global css file, and blue = mui styles.

global css file being overridden by mui

document head element style tag order

Um, but I actually managed to get the prepend: true option working with the emotion cache as expected by removing the block that you mentioned: https://github.com/mui-org/material-ui/blob/master/examples/remix-with-typescript/app/root.tsx#L25, so I’ll close the issue.

Thanks very much for your time, apologies for the muck about.