June 25, 2025

Subject: Prettier 3.6; Biome v2; JSON modules; top-level await; Web Engines Hackfest

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Prettier 3.6: experimental fast CLI, OXC plugin and more

prettier.io github.com/sosukesuzuki

Highlights:
  • A new fast CLI with optimized JavaScript is over 22 times faster with caching and about five times faster without caching.
  • An OXC plugin switches Prettier to the – faster – Rust-based parser OXC for JavaScript and TypeScript.

Biome v2 (“Biotype”): type-aware linting without tsc

biomejs.dev @biomejs@fosstodon.org @ematipico@fosstodon.org

JSON module scripts are now Baseline Newly Available

web.dev @tomayac@toot.cafe

The ECMAScript specification and the HTML specification use different terminology: That’s why the HTML spec uses the name “JSON module scripts” for JSON modules.

Using await at the top level in ES modules

allthingssmitty.com github.com/allthingssmitty

Videos: Web Engines Hackfest 2025

www.youtube.com @webhackfest@floss.social

The titles of the talks:
  • Oliver Medhurst – Compiling JavaScript ahead-of-time
  • Andreu Botella & Luca Casonato – WinterTC: a standard for server-side runtimes
  • Leo Kettmeir – JSR: under the hood & native support in the ecosystem
  • Joyee Cheung – Bridging CommonJS and ESM in Node.js
  • Haukenes, Barash & Carr – Cross-Engine Contributions at Scale: How newcomers accelerated Temporal...
  • Christian Ulbrich – Versioned Web Components
  • Adrián Pérez de Castro – Jumping Over the Garden Wall – WPE WebKit on Android
  • Mike Pennisi – Automating Assistive Tech with Standards
  • Thomas Steiner – Built-in AI APIs for the Web
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