What is Prettier? An opinionated code formatter Supports many languages Integrates with most editors Has few options »

Suddenly our previous format for calling function breaks down because this is too long. Prettier is going to do the painstaking work of reprinting it like that for you:

In addition to running Prettier from the command line (prettier --write), checking formatting in CI, and running Prettier from your editor, many people like to run Prettier as a pre-commit hook as well.

Prettier can restrict itself to only format files that contain a special comment, called a pragma, at the top of the file. This is very useful when gradually transitioning large, unformatted codebases to Prettier.

Test your code formatting with Prettier's online playground, which allows you to experiment with different options and see real-time results.

To get the most out of Prettier, it’s recommended to run it from your editor. If your editor does not support Prettier, you can instead run Prettier with a file watcher.

By default, Prettier automatically infers which parser to use based on the input file extension. Combined with overrides you can teach Prettier how to parse files it does not recognize.

So why choose the “Prettier style guide” over any other random style guide? Because Prettier is the only “style guide” that is fully automatic. Even if Prettier does not format all code 100% the way you’d like, …

This is unreleased documentation for Prettier next version. For up-to-date documentation, see the latest version (stable).

It’s better to use a configuration file for formatting options like --single-quote and --trailing-comma instead of passing them as CLI flags. This way the Prettier CLI, editor integrations, and other tooling …