test-repo/changelog_unreleased/cli/17151.md

[HIGHLIGHT] Support experimental CLI (#17151, #17396 by @fisker)

You may have already heard of or used our new performance improved CLI. From prettier main, you can now use it without installing unstable v4 version.

# Run CLI with `--experimental-cli`
prettier . --check --experimental-cli

# Or use environment variable `PRETTIER_EXPERIMENTAL_CLI=1`
PRETTIER_EXPERIMENTAL_CLI=1 prettier . --check