Yannick Croissant (@[email protected])

Hello les TypeScripters 👋 Nouveau meetup en approche et non des moindres, le 40éme 🎉 Rendez-vous le 12 novembre chez @avec_alan ! Le programme arrive d'ici peu 😉 meetup.com/fr-FR/paris-ty…

v7.35.0 of npmjs.com/eslint-plugin-… has just been released, with eslint 9 and flat config support. Please try it out, and file issues if you have any trouble!

Here's a fun little perf win I managed over the weekend on eslint-plugin-react: github.com/jsx-eslint/esl… This shaves off about 1/3 of the time spent linting TypeScript/JavaScript in the @getsentry repo - about 70 seconds!

instead of leetcode we need 5 rounds of interviews to see if you can understand the legacy service that's failing on a decomisioned cloud api with no documentation and you have to find the engineer who first wrote part of the code so he can point you to a 5 years old jira ticket

I'm giving a lightning talk at this event on this Wednesday ! <Writing Your First Vite Plugin>

@tseslint @geteslint ✨ Announcing typescript-eslint v8 Beta ✨ typescript-eslint.io/blog/announcin…

React Conf 2024 recap! react.dev/blog/2024/05/2…

💡 TIL about Compute Pressure API This permits observing compute pressure on things such as: - CPU - GPU - thermals Pressure levels: critical > serious > fair > nominal This just landed in Chrome 125 This could be useful under the hood for Concurrent React? 🤔

New post on my blog: Modern React testing, part 5: Playwright sapegin.me/blog/react-tes… @playwrightweb

Node.js 22 is here 😎 Featuring: require()ing ESM graphs, WebSocket client, updates of the V8 JavaScript engine, and more. Big thank you to @_rafaelgss and @satanacchio for their work on this 🎉

Say hello to the new React Paris meetup ! meetup.com/fr-FR/react-pa… Gabriel and I are looking for a host and speakers for the first one ! Feel free to reach me if you are interested 😉

React 19 will improve DX! Notably hydration errors + reporting 🎉 Error handling was refactored + 2 new React APIs 🧪️ 💡 onRecoverableError: now includes Error.cause with a helpful message 🆕 onCaughtError: catch boundary errors 🆕 onUncaughtError: catch other errors

This release also includes the new config inspector written by the prolific @antfu7: eslint.org/blog/2024/04/e…

ESLint v9.0.0 has been released! 🎉 eslint.org/blog/2024/04/e…

OH MY GOD IT'S HAPPENING In TS 5.5, type predicates will be inferred automatically from functions that return a narrowing statement. No more 'val is string' to force TypeScript's hand. @danvdk, I can't believe you got it merged. Incredible work.

Oh, yeeeeah, this has been merged 😍😍😍😍😍😍😍😍😍 TS 5.5 is gonna be one of the most epic releases in a while, once again - huge props to @danvdk github.com/microsoft/Type…

Announcing TypeScript 5.4! 📢 Now with: ✅ Smarter control-flow analysis in closures ✅ The `NoInfer` utility type ✅ Broader support for bundlers and runtimes ✅ Quick fixes for missing parameters ✅ Improved auto-imports and more! Try it today! devblogs.microsoft.com/typescript/ann…

JSR - the JavaScript Registry - is now available in public beta. 🛠️ TypeScript first, ESM only 🌐 Works across runtimes (Node, Deno, Bun, workerd and more) and alongside npm/yarn/pnpm 🤗 Free and open source Read about it on the Deno blog: deno.com/blog/jsr_open_…

Put up my second #TypeScript PR! It allows the type checker to infer "type predicates" when a function returns a boolean that's tied to a refinement on one of its parameters. I have no idea if it'll be accepted, but I sure learned a lot implementing it! github.com/microsoft/Type…

By the end of 2024, you’ll likely never need these APIs again: • useMemo, useCallback, memo → React Compiler • forwardRef → ref is a prop • React.lazy → RSC, promise-as-child • useContext → use(Context) • throw promise → use(promise) • <Context.Provider> → <Context>