Closes#40366
Rebass is not dependent on `styled-components` anymore. See:
https://rebassjs.org/migrating/#v4-breaking-changesCloses#40367
Document has been converted (#39871) from class, so `this.props` threw
an error.
## Bug
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Errors have helpful link attached, see `contributing.md`
## Feature
- [ ] Implements an existing feature request or RFC. Make sure the
feature request has been accepted for implementation before opening a
PR.
- [ ] Related issues linked using `fixes #number`
- [ ] Integration tests added
- [ ] Documentation added
- [ ] Telemetry added. In case of a feature if it's used or not.
- [ ] Errors have helpful link attached, see `contributing.md`
## Documentation / Examples
- [ ] Make sure the linting passes by running `pnpm lint`
- [ ] The examples guidelines are followed from [our contributing
doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
## Changes
- Migrate class based `_document`s to functional documents
- Removed `_document.js` where default
- Removed `MyDocument.getInitialProps` where default
## Motivation
This removes some boilerplate and prepares examples for server components.
## Documentation / Examples
- [x] Make sure the linting passes by running `pnpm lint`
- [x] The examples guidelines are followed from [our contributing doc](https://github.com/vercel/next.js/blob/canary/contributing.md#adding-examples)
The with-rebass example was using an outdate version of rebass(v1) which was throwing all sorts of deprecated warnings in the terminal, I've bumped up the version to the latest(v4) and made necessary changes to index.js page to keep it working.
If there is any issue, or some additional work needed, I am absolutely open to help.
Love the next.js framework and work you guys are doing ✌.
