We are still seeking feedback for the --experimental-ternaries option released in Prettier 3.1. Please read A curious case of the ternaries and respond via the Google Forms link provided.

Additionally, we recommend reading Prettier's CLI: A Performance Deep Dive by Fabio Spampinato. This faster CLI is slated to be released as version 4.0.

This means that we can now focus on the next important aspect: Performance. Prettier has never been fast per se, but fast enough for most use cases. This has always felt unsatisfying so we wanted to do something about it. What better way than a friendly competition.

On November 9th, we put up a $10k bounty for any project written in Rust that would pass 95% of Prettier test suite. Guillermo Rauch, CEO of Vercel, matched it to bring it to $20k and napi.rs added another $2.5k. The folks at Algora even made an amazing landing page for it.

Read on for our journey and the motivation behind this change, along with early developer feedback and an overview of the "curious ternaries" style.

Please give the --experimental-ternaries option a try and let us know what you think!

For a quick tl;dr, see the release post.

We have also added support for the control flow syntax in Angular v17. For details on the syntax, please read the official Angular release post.

We have made the migration to using ECMAScript Modules for all our source code. This change has significantly improved the development experience for the Prettier team. Please rest assured that when using Prettier as a library, you can still use it as CommonJS as well.

This update comes with several breaking changes. One notable example is the alteration in markdown formatting - spaces are no longer inserted between Latin characters and Chinese or Japanese characters. We'd like to extend our gratitude to Tatsunori Uchino, who has made significant contributions to Prettier over the past year, particularly with this feature. Additionally, the default value of trailingComma has been changed to "all".

Another important change in this release is the significant overhaul of the plugin interface. Prettier now supports plugins written using ECMAScript Modules and async parsers. If you're a plugin developer, please exercise caution while updating. You can find the migration guide here. As always, we welcome bug reports and feedback!

This release also includes numerous formatting improvements and bug fixes.

If you appreciate Prettier and would like to support our work, please consider sponsoring us directly via our OpenCollective or by sponsoring the projects we depend on, such as typescript-eslint, remark, and Babel. Thank you for your continued support!

We're also adding support for TypeScript 4.9 satisfies operator!

If you enjoy Prettier and would like to support our work, consider sponsoring us directly via our OpenCollective or by sponsoring the projects we depend on, including typescript-eslint, remark, and Babel.

The Prettier team plans to release 3.0 within the next few months. If you are a plugin developer, get ready for the migration. Visit the migration guide and issue #13606 for more information.

We've also added support formatting for TypeScript 4.7 syntax!

If you enjoy Prettier and would like to support our work, consider sponsoring us directly via our OpenCollective or by sponsoring the projects we depend on, including typescript-eslint, remark, and Babel.

We've also added support formatting for some new JavaScript syntax proposals via Babel.

If you enjoy Prettier and would like to support our work, consider sponsoring us directly via our OpenCollective or by sponsoring the projects we depend on, including typescript-eslint, remark, and Babel.

We’ve also added support for TypeScript 4.4, including new syntax features such as class static blocks.

If you enjoy Prettier and would like to support our work, consider sponsoring us directly via our OpenCollective or by sponsoring the projects we depend on, including typescript-eslint, remark, and Babel.

A remarkable milestone is the long-awaited release of the Ember / Handlebars formatter. It’s supposed to be the last formatter included directly in the core library. In the future, for sustainability, languages should be added only by plugins.

We are grateful to our financial contributors: Salesforce, Indeed, Frontend Masters, Airbnb, Shogun Labs, Skyscanner, Konstantin Pschera, and many others who help us keep going. If you enjoy Prettier and would like to support our work, head to our OpenCollective. Please consider also supporting the projects Prettier depends on, such as typescript-eslint, remark, and Babel.

Most of the changes in this release are thanks to the hard work of Fisker Cheung, Georgii Dolzhykov, and Sosuke Suzuki, along with many other contributors.

And just a reminder, when Prettier is installed or updated, it’s strongly recommended to specify the exact version in package.json: "2.3.0", not "^2.3.0".

After a long and careful consideration, we decided to change the default values for the trailingComma, arrowParens, and endOfLine options. We made the CLI more intuitive. And we've finally dropped support for Node versions older than 10, which had grown to become a huge maintenance hassle and an obstacle for contributors. Read below in details.

It's also a good opportunity to remind that Prettier is now accepting donations! If you enjoy Prettier and would like to support our work, head to our OpenCollective.

Since the last release, the Prettier website has gotten an all-new design thanks to @orta!

Facebook is 💯% Prettier

Another exciting announcement is that all the JavaScript files in the Facebook codebase have now been converted to Prettier! What's mind-blowing is that there hasn't been a concerted push to convert the codebase to Prettier, we just added the tooling in place and documentation on how to migrate a folder to Prettier and people just started converting their piece of the codebase.

In 8 months, 75% of the codebase was organically converted and last week we did a final push to convert the rest and enforce that every file from now on is using Prettier! It shows that Prettier is robust to support all the crazy edge cases you can imagine and also that it provides a lot of value given the crazy adoption rate.

It's also an exciting release in itself because Prettier now has partial support for .vue files and the internals have been refactored such that there's a proper plugin API in order to support different languages!

We officially announced prettier over two months ago as a way to solve the problem of wasting time formatting your code. It started as an experiment but it clearly resonated with a lot of people, amassing ~7000 GitHub stars and over 100,000 monthly npm downloads in just two months.