## 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)
I added ` *.tsbuildinfo` to gitignores of examples that use typescript and don't already have it. By use typescript I mean have `tsconfig` somewhere in their directory tree.
I used the following script to update the files:
```bash
#!/bin/bash
set -eou pipefail
cd examples
examples=`git ls-files . | grep tsconfig | xargs dirname | grep -v "/"`
for example in $examples; do
if ! grep -q tsbuildinfo $example/.gitignore; then
gitignore="$example/.gitignore"
echo $gitignore
tail -c1 $gitignore | read -r _ || echo >> $gitignore
echo -e "\n# typescript\n*.tsbuildinfo" >> $gitignore
fi
done
```
