## Changes
see commits
## Additional Info
Since this example is quite complex I tried to remove additional noise
(unused type inference).
## 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/examples/adding-examples.md)
## Related
Closes: #40975
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
```
Changes:
- Migrate to TypeScript. `react-intl` natively supports TypeScript now.
- Upgrade corresponding `formatjs` packages.
- Dynamically polyfill Intl API per locale since those polyfills are huge.
- Migrate to recommended workflow per https://formatjs.io/docs/getting-started/application-workflow
