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Guy Bedford

@guybedford.com
1.4K followers 52 following 16 posts

Rabbit hole explorer. Working on JS & WebAssembly at Cloudflare. TC39. Creator jspm.org.

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Guy Bedford @guybedford.com · 22/04/2026
We recently undertook an effort to improve the reliability of Rust Workers, which involved implementing panic=unwind and abort recovery in Wasm Bindgen using WebAssembly Exception Handling. Excited to be able to share this work! blog.cloudflare.com/making-rust-...
blog.cloudflare.com
Making Rust Workers reliable: panic and abort recovery in wasm‑bindgen
Panics in Rust Workers were historically fatal, poisoning the entire instance. By collaborating upstream on the wasm‑bindgen project, Rust Workers now support resilient critical error recovery, includ...
0110
Reposted by Guy Bedford
Justin Fagnani @justinfagnani.com · 13/08/2025
PSA: If you want to use standard CSS Modules before they ships in Safari and Firefox, I built a Rollup plugin to support them: www.npmjs.com/package/roll... Converting CSS Modules to JS this way also support bundling before @sheet (which lets you put multiple stylsheets in one CSS file) lands.
npmjs.com
rollup-plugin-css-modules
Rollup support for standard CSS modules. Latest version: 0.1.2, last published: 2 years ago. Start using rollup-plugin-css-modules in your project by running `npm i rollup-plugin-css-modules`. There a...
1145
Reposted by Guy Bedford
Steven ⬢ @styfle.dev · 04/07/2025
Freedom github.com/styfle/propo...
github.com
GitHub - styfle/proposal-import-bytes: A modest proposal for importing bytes in javascript
A modest proposal for importing bytes in javascript - styfle/proposal-import-bytes
1124
Reposted by Guy Bedford
Shu-yu Guo @rfrn.org · 03/07/2025
We're hiring JavaScriptCore VM engineers in Cupertino, CA. Good opportunity to work on some truly foundational tech that underpins web performance in Apple products. jobs.apple.com/en-us/detail...
jobs.apple.com
JavaScript Virtual Machine Compiler Engineer - Jobs - Careers at Apple
Apply for a JavaScript Virtual Machine Compiler Engineer job at Apple. Read about the role and find out if it’s right for you.
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Guy Bedford @guybedford.com · 03/07/2025
Fascinating writeup by @hoodmane.bsky.social of Pyodide's WebAssembly JS promise integration, including a description and fix for the linear memory stack reentrancy problem. blog.pyodide.org/posts/jspi-w...
blog.pyodide.org
Integrating JSPI with the WebAssembly C Runtime
Using JSPI with C code compiled to the wasm32-unknown-unknown target
023
Reposted by Guy Bedford
ECMAScript.News @ecmascript.news · 26/05/2025
JSPM 4.0: dependency management via import maps in browsers (benefits: reduced tooling and more) @guybedford.com jspm.org/jspm-4.0-rel... #ECMAScript #JavaScript
jspm.org
JSPM - JSPM 4.0 Release
JSPM 4.0 release post featuring a refreshed local development workflow for modern standards
032
Reposted by Guy Bedford
Guy Bedford @guybedford.com · 12/05/2025
First update on the open source I've been working on this past month: ES Module Shims 2.5 - featuring hot reloading for native modules. guybedford.com/hot-reloadin...
guybedford.com
ES Module Shims 2.5 Release Update
ES Module Shims 2.5 release update, including hot reloading, import defer and new baseline feature support.
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Guy Bedford @guybedford.com · 12/05/2025
First update on the open source I've been working on this past month: ES Module Shims 2.5 - featuring hot reloading for native modules. guybedford.com/hot-reloadin...
guybedford.com
ES Module Shims 2.5 Release Update
ES Module Shims 2.5 release update, including hot reloading, import defer and new baseline feature support.
1236
Guy Bedford @guybedford.com · 23/04/2025
Interesting experiment - Google’s experimenting with performance exceptions in the origin-segmented script cache, seemingly primarily for their own advertising, YouTube and Google Maps scripts. bsky.app/profile/inte...
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Guy Bedford @guybedford.com · 22/04/2025
Excited to announce I'll be joining Cloudflare next month as a Systems Engineer on the Workers Runtime team, continuing to work on the platform-level intersection of JavaScript and WebAssembly. And in the mean time, I will be taking a much needed break and dusting off some OSS work...
8593
Reposted by Guy Bedford
IntentToShip @intenttoship.dev · 27/03/2025
Blink: Intent to Prototype: Source phase imports
groups.google.com
Blink: Intent to Prototype: Source phase imports
Blink: Intent to Prototype: Source phase imports
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Guy Bedford @guybedford.com · 10/02/2025
It blows my mind when JS packages publish for every commit and end up with thousands of versions on npm. For example Primer React (www.npmjs.com/package/@pri...) publishes ~20 - 30 times a day via commit-based CI. Good dev pattern, or misuse of npm?
npmjs.com
@primer/react
An implementation of GitHub's Primer Design System using React. Latest version: 37.12.0, last published: 3 days ago. Start using @primer/react in your project by running `npm i @primer/react`. There a...
590
Reposted by Guy Bedford
Guy Bedford @guybedford.com · 27/01/2025
Announcing ES Module Shims 2.0. The latest version of what started out as an import maps polyfill now supports production polyfilling of more than 8 existing and upcoming native browser modules features 🧵
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Guy Bedford @guybedford.com · 27/01/2025
Announcing ES Module Shims 2.0. The latest version of what started out as an import maps polyfill now supports production polyfilling of more than 8 existing and upcoming native browser modules features 🧵
17224