Logo
Picture

Thomas Chetwin @TChetwin

Software Engineer at Bloomberg. Opinions are my own. London Joined June 2009
  • Tweets
    282
  • Followers
    211
  • Following
    1K
  • Likes
    9K
Thomas Chetwin retweeted
TechAtBloomberg Profile Picture

Tech At Bloomberg @TechAtBloomberg

4 months ago

Our engineers @Bloomberg have been contributing to the #JavaScript ecosystem for more than a decade. So, it's time they had somewhere to tell their story. This week, we are setting up our new #JS engineering blog. More posts will follow soon! bloom.bg/3OQsgYd

TChetwin Profile Picture

Thomas Chetwin @TChetwin

7 months ago

@Rightpeg @james_sprt I think VS9 has left the gate again now

TChetwin Profile Picture

Thomas Chetwin @TChetwin

7 months ago

@james_sprt @Virgin @VirginAtlantic

Thomas Chetwin retweeted
jaffathecake Profile Picture

Jake Archibald @jaffathecake

8 months ago

JavaScript top-level await is no longer considered 'baseline' due to a pretty big Safari bug caniuse.com/mdn-javascript… The module graph fails in cases where two modules import a third at the same time. Demo: random-stuff.jakearchibald.com/bug-repros/top… It's best to avoid the feature for now 😔

Thomas Chetwin retweeted
robpalmer2 Profile Picture

Rob Palmer @robpalmer2

a year ago

Ecma Recognition 😉 This award for my work as co-chair of @TC39 for the last five years was a lovely surprise 🙏 I'm grateful for the sustained encouragement & support from leadership at @TechAtBloomberg championing the value of open source & standards 👍

EcmaIntl Profile Picture

Ecma International @EcmaIntl

a year ago

The 129th General Assembly held in Geneva on 25 June 2025 approved four new Ecma recognition awards to honour Touradj Ebrahimi, Hyun Kahng, Robert Palmer and Michael Saboff for their contributions and services to Ecma. More information is available at ecma-international.org/news/

Thomas Chetwin retweeted
mattpocockuk Profile Picture

Matt Pocock @mattpocockuk

a year ago

Here's why the Records and Tuples proposal died, and how Composites might solve it. I did my homework for this one - I interviewed @acutmore, the Composites TC39 champion. And I'm really proud of how it turned out. I'd love any feedback you can give me, and I'll make any necessary adjustments before it goes live.

TChetwin Profile Picture

Thomas Chetwin @TChetwin

a year ago

@wunderacle @nodejs User friendly per the link you shared, with N-API version, V8 version, and ideally showing all patch versions denoting when a given line became LTS. I think this was the state about 3 years ago and I struggle to find some of that data now, was it moved elsewhere?

Thomas Chetwin retweeted
robpalmer2 Profile Picture

Rob Palmer @robpalmer2

2 years ago

✨ dtsx is a fast new DTS emitter for TypeScript. It leverages tsconfig "isolatedDeclarations" to ensure that source code is sufficiently annotated with types.

stacksjs Profile Picture

Stacks @stacksjs

2 years ago

We have been working hard these past few weeks on creating a very fast .d.ts emitter, using @bunjavascript. And we finally have a release out that works across our packages. 📢 Say welcome to... dtsx!

Thomas Chetwin retweeted
NodeConfEU Profile Picture

NodeConf EU @NodeConfEU

2 years ago

📷Huge thanks to @TechAtBloomberg for being a #gold sponsor at @NodeConfEU 2024!! Your partnership is helping us create something truly special. 📷 #Sponsorship #Techatbloomberg #gold #waterford #ireland #techevents

Thomas Chetwin retweeted
nodejs Profile Picture

Node.js @nodejs

2 years ago

🚀 Node.js 23 is here! 🚀 New features, performance boosts, and a smoother developer experience. With better compatibility and stability, Node.js 23 delivers more power for building efficient apps. Read here: 👉hubs.la/Q02TFFXp0 #NodeJS #JavaScript #WebDevelopment

Thomas Chetwin retweeted
typescript Profile Picture

TypeScript @typescript

2 years ago

TypeScript 5.7 beta is now available to try! Read up on what's new today! devblogs.microsoft.com/typescript/ann…

Thomas Chetwin retweeted
robpalmer2 Profile Picture

Rob Palmer @robpalmer2

2 years ago

TypeScript London is tomorrow 😮 After two new open source releases, here's the line up: 🔷 @alistaiir to kick us off 🔤 Stricli: Building Better CLIs 🪿 Porffor: Type-Driven Runtime Optimizations 👻 ts-blank-space: Faster TypeScript Compilation And some very special guests 💙

TechAtBloomberg Profile Picture

Tech At Bloomberg @TechAtBloomberg

2 years ago

We're hosting our first London #TypeScript Community Meetup at @Bloomberg's EMEA HQ in London on Wed., October 2 (18:00 BST). Join us for 3 exciting talks & to meet London @typescript community members, including some TypeScript contributors. bloom.bg/4enU9OF #opensource

Thomas Chetwin retweeted
Zairex Profile Picture

@molisani.bsky.social @Zairex

2 years ago

I'm excited to announce Stricli, a brand new #opensource framework for building type-safe, lazy-loaded CLI applications with #TypeScript. We developed this framework for our internal CLIs at @TechAtBloomberg, and now we want to share it with the world. bloomberg.github.io/stricli/blog/i…

Thomas Chetwin retweeted
apaprocki Profile Picture

Andrew Paprocki @apaprocki

2 years ago

@andywingo @igalia Now w/ 20+ years SpiderMonkey experience, ~15 v8/Node, Chromium etc. we’ve assembled one of the best sets of passionate JS ecosystem engineers in NYC/London. London! Go meet Rob (TC39 co-chair) and everyone doing amazing things with JS/TS in London HQ on Wednesday!

TechAtBloomberg Profile Picture

Tech At Bloomberg @TechAtBloomberg

2 years ago

We're hosting our first London #TypeScript Community Meetup at @Bloomberg's EMEA HQ in London on Wed., October 2 (18:00 BST). Join us for 3 exciting talks & to meet London @typescript community members, including some TypeScript contributors. bloom.bg/4enU9OF #opensource

Thomas Chetwin retweeted
andhaveaniceday Profile Picture

Jake Bailey @andhaveaniceday

2 years ago

TypeScript 5.7 will load 2.5x faster than TypeScript 5.6 when run in Node 22+, thanks to @JoyeeCheung's work to provide an offical API for V8 compile caching. That's 60% less time waiting for tsc/tsserver to actually start doing work. PR: github.com/microsoft/Type…

Thomas Chetwin retweeted
acutmore Profile Picture

Ashley Claymore @acutmore

2 years ago

Today, I'm releasing a TypeScript compiler called ts-blank-space 🎈 We use this at @TechAtBloomberg to perform type-stripping on a modern subset of TypeScript. It's written in TypeScript and is fast because it uses whitespace to enable work-skipping. bloomberg.github.io/ts-blank-space

Thomas Chetwin retweeted
TechAtBloomberg Profile Picture

Tech At Bloomberg @TechAtBloomberg

2 years ago

We're hosting our first London #TypeScript Community Meetup at @Bloomberg's EMEA HQ in London on Wed., October 2 (18:00 BST). Join us for 3 exciting talks & to meet London @typescript community members, including some TypeScript contributors. bloom.bg/4enU9OF #opensource

Thomas Chetwin retweeted
TechAtBloomberg Profile Picture

Tech At Bloomberg @TechAtBloomberg

2 years ago

(1/2) @Bloomberg is excited to join the Unicode Consortium (@unicode) as a Supporting member, where we'll have the opportunity to help advance the state of internationalized software for global financial applications bloom.bg/3Twl1UI #opensource

Thomas Chetwin retweeted
typescript Profile Picture

TypeScript @typescript

2 years ago

The release candidate for TypeScript 5.6 is now available for testing! Give it a try today for more new checks, ways to speed-up your builds, new JS features, and more! devblogs.microsoft.com/typescript/ann…

Thomas Chetwin retweeted
_rafaelgss Profile Picture

Rafael Gonzaga @_rafaelgss

2 years ago

Node.js 22.7.0 is out 💚 * Experimental Node.js to support TypeScript syntax such as Enum and namespace🙌 * Module syntax detection is now enabled by default 🙌 * Faster Buffer.copy & Buffer.write ⚡ Check it out nodejs.org/en/blog/releas…

Trends for United States

Balogun
Belgium
Bosnia
#USMNT
FIFA
Tillman
Country Roads
Pepi
Celtics
Paul George
Pulisic
Poch
Red Card
Jaylen Brown
Team USA
Soccer
#AEWDynamite
John Denver
Sixers
Tatum

You might like

JavaScript Infrastructure & Tooling at Bloomberg. Co-chairing @TC39. Likely to tweet tech stuff about JS & software performance. Opinions are my own.
Rob Palmer
@robpalmer2
12K Followers
JavaScript Infrastructure & Tooling @Bloomberg, creator of @boa_engine
Jason Williams
@Jason_williams
1K Followers
Product Lead for @ChromeDevTools. Ideas my own. he/him
Michael Hablich
@MHablich
1K Followers
Engineering @Bloomberg; tech/music/believing in young people; raising £ for STEM/music education at @bigchange_ @mission44 @stemettes etc. Opinions my own.
Paul Williams
@pcwilliams
2K Followers
Sr. Engineer at Bloomberg LP
Andrew Paprocki
@apaprocki
706 Followers
javascript engines / language design / infra
Rick Button
@rickbutton
245 Followers