Lydia Hallie ✨ @lydiahallie
ex-@Vercel, instructor @FrontendMasters React (@expo, @nextjs), JavaScript, Web Performance, Technical Writing lydiahallie.com Joined June 2017-
Tweets743
-
Followers39K
-
Following55
-
Likes3K
🚀 Build native iOS apps over-the-air with @expo 51 beta! 𝝠 npx expo run:ios --device ◆ Supports Vision Pro 🥽 ◆ Connects to all iOS dev devices on the network 🌐 ◆ Feels like absolute magic 🪄
🔥 New video!! Learn how the browser's event loop, Web APIs, and (micro)task queues enable async non-blocking JavaScript youtu.be/eiC58R16hb8
New course by @lydiahallie: Testing Your JavaScript Knowledge! Challenge yourself with 50 interactive quiz questions on the event loop, scopes and closures, the "this" keyword, classes and prototypes, garbage collection, and more frontendmasters.com/courses/javasc…
🚀 This is universal React with the new "react-strict-dom" by @Meta (experimental): ◆ Light-weight, web-first API ◆ Truly native components on each platform ◆ No div-soup on web ◆ Fully accessible/indexable primitives ◆ Can be used with Tailwind CSS
Introducing @expo Router v3 Beta ◆ Build server endpoints with API Routes ◆ Bundle splitting for web ◆ 2x Faster web exports ◆ Customizable app/ directory ◆ Not Found Routes ◆ Auto font optimizations ◆ Hot reloading for Tailwind Learn more ↓ blog.expo.dev/expo-router-v3…
📣 Like @vuejs? Excited to announce the free new Vue design patterns guide on patterns.dev/vue! @lydiahallie and I were thrilled to partner with @djirdehh to ship this 🥳
Brainstorming some ideas for my @nextjs conf talk, I'd love to hear what topics you'd be interested in learning more (in-depth) about! 🙏
🥳 Excited for @nextjs conf!! See you in San Francisco! nextjs.org/conf/ticket/ly…
v0 by Vercel Labs Generate UI with simple text prompts. Copy, paste, ship. Explore the prompt library and join the waitlist today. v0.dev
I'm hiring for the @expo dev tools team! Expo Router has an ambitious roadmap and a lot of interesting problems to solve. Are you're good at TypeScript, love React, and want to make "Write Once, Run Everywhere" a reality? Send evidence of exceptional ability to jobs@expo.dev
Here it is! Patterns for Reactivity (~18 of them!) with Modern Vanilla JavaScript frontendmasters.com/blog/vanilla-j…
Like @vuejs? Happy to share @lydiahallie and I are teaming up with @djirdehh (author of Fullstack Vue) to bring a free Vue design patterns guide to Patterns.dev 🥳 Excited to share more updates soon. Stay tuned!
Observer pattern in JavaScript by @lydiahallie From her "Tour of JavaScript & React Patterns" course: frontendmasters.com/courses/tour-j…
This is a great deep dive for anyone wanting to learn more about React. Kudos to @lydiahallie! vercel.com/blog/how-react…
Learn how React 18 improves application performance. Including diagrams and examples of Transitions, Suspense, Server Components, and more. vercel.com/blog/how-react…
Introducing @expo Router v2 ◆ Static rendering on web ◆ Auto TypeScript for file-based routes ◆ New documentation ◆ src/app directory support ◆ Experimental Async Routes ◆ Imperative API ◆ Expo Head for Handoff and Metadata Learn more ↓ blog.expo.dev/introducing-ex… ↑
Matt Pocock @mattpocockuk
142K Followers 581 Following Full-time TypeScript educator. Ex-@vercel, @statelyai. Used to be a voice coach. He/him. Author of Total TypeScript 🧙 Hire me to teach your team TypeScript!
Josh W. Comeau @JoshWComeau
127K Followers 2K Following Indie hacker and educator. Blogging at https://t.co/kbdJDUdLg5. Previously @gatsbyjs, @digitalocean, @concordia_btcmp, @khanacademy. He/Him 🌈
Theo - t3.gg @t3dotgg
137K Followers 2K Following I make videos, dev tools, companies, and investments. Founder of @pingdotgg (YC W22)
Lee Robinson @leeerob
126K Followers 706 Following VP of Product @Vercel. Helping developers build a faster web. Teaching about React and Next.js.
Steve (Builder.io) @Steve8708
87K Followers 685 Following CEO @builderio - design to production, faster
Addy Osmani @addyosmani
343K Followers 2K Following Engineering leader, @GoogleChrome • Author • Great user & developer experiences • @ChromiumDev @ChromeDevTools • @____lighthouse • @ChromeUXReport
David K 🎹 @DavidKPiano
66K Followers 3K Following Making state machines at @statelyai · prev. @Microsoft · I play piano
Seb ⚛️ ThisWeekIn.. @sebastienlorber
41K Followers 5K Following 🔥 Join 37k devs - Stay up-to-date with React: • 📨 https://t.co/DvLGHeLY5G • @ThisWeekInReact • @docusaurus maintainer
Tanner Linsley @tannerlinsley
64K Followers 728 Following ⚔️ Sir Tan of the Stack 🎉 TypeScript 🌎 Web ⚛️Open Source Software💡UI/UX/DX 🎯 SEO 💼Co-Founder @NozzleIO 🛠Creator @tan_stack 👨👩👧👦@Ch_JesusChrist
Shu @shuding_
36K Followers 2K Following Core team @nextjs, @vercel AI. @v0, Satori, SWR creator. Don’t talk unless you can improve the silence.
swyx @swyx
91K Followers 3K Following Anti-ego ideas for anti-ergodic life. Founder, @smolmodels ▹ Listen: @latentspacepod ▹ Read: @coding_career ▹ Join: @aiDotengineer
Jared Palmer @jaredpalmer
67K Followers 2K Following @Vercel VP of AI • @v0 Creator • @Turborepo Founder (acquired by @Vercel) • Angel Investor
Jason Lengstorf @jlengstorf
53K Followers 2K Following I team up with dev-focused companies to make video developers actually want to watch {...💜} 📺 host @LWJShow 💻 web generalist 👨🏫 tech educator
Hassan @nutlope
74K Followers 948 Following Developer Relations @togethercompute. Building AI apps like @roomGPT and https://t.co/3NFbnMUHJP. Tweeting about AI, web dev, and my side projects.
shadcn @shadcn
87K Followers 187 Following building → @v0 - https://t.co/HJcOr0AmKT - https://t.co/5Zh4De1fom
sunil pai, etc. @threepointone
33K Followers 2K Following 🎈 Entscheidungsproblem. Building @partykit_io.
Alex / KATT 🐱 @alexdotjs
19K Followers 2K Following 👋 I'm Alex & I tweet about web dev stuff. 👉 Creator of @trpcio (⭐️30k+). 🧙♂️ Open-sourcerer & fully-stacked typescripter. 🗣 Speak 🇸🇪🏴🇧🇷
David Gee @idavidgeo
109 Followers 1K Following Don’t listen to what people say, watch what they do.
Dean @deankerr
64 Followers 289 Following
Alexandra Stoica @alexandrasto_
37 Followers 212 Following UX Engineer. Currently building @tryarcane. Previously worked with @google, @androiddev, Area 120, and @protocollabs.
Yoandri Garcia Villar @YoaProgramer
24 Followers 229 Following
Parth @Parth4149
29 Followers 752 Following Frontend Developer | Passionate about Coding, Design, and Innovation | Seeking New Challenges and Learning Opportunities
Edison Eduardo Abreu @dinho_abreu
4 Followers 167 Following
from Dev to Prod @DevProd73412
3 Followers 9 Following I do video tutorials about web development on YouTube!
Volodymyr Khomovyi @khomovyi
3 Followers 34 Following
Leighton Carr @LeightonJCarr
86 Followers 255 Following Chief Software Engineer @ Boeing Training Solutions. I enjoy technology, space flight, travel and spending time with my family.
Simó Dávid @simiikee
0 Followers 12 Following
Raja Selvaraj @Rajaaltus2
0 Followers 26 Following
prathap chandra @prathap_moola
67 Followers 2K Following
Hugues🍓Aux🍓Frai.. @HuguesOfraises
23 Followers 210 Following Front-end developper { ReactEnthusiast }. Éleveur et reproducteur agréé de vaisselle sale depuis 1992. English/日本語 OK
Jhimy Michel @jhimy_michel
75 Followers 547 Following 💻 Software Engineer Living in SW 🇨🇭 Made in Bolivia 🇧🇴
adam @adamtrll
9 Followers 59 Following Building https://t.co/cQ2hNuoIdv for a passwordless future and sharing the journey. Teaching modern tech at my local university.
Curnel @Robberts_Dad
20 Followers 341 Following
bingbing1992 @bingbing_1992
7 Followers 83 Following
tomc thomas @SkTomsi
102 Followers 125 Following designer + developer @ flipkart and shell backed startup | contributor @SuperteamDAO
Zayd Thabit @De8886280607
12 Followers 207 Following daily reads, interested findings, quotes I like and ideas that inspire me. About me Software Engineer who loves to learn stuff and sharing them.
🟢 gaurang.tsx @Soham_Asmi
347 Followers 862 Following Maker. Helping makers make ||| Lover of music, life, & code 🟢 ||| Live ✊ & ❤️ fully.
Xun Hong @xunhongt
91 Followers 379 Following
流云 @Tsing_Danny
25 Followers 73 Following
Alex Sexton @SlexAxton
33K Followers 1K Following Fun and cool/strong — onions are my own — engineering at @stripe
Barret Ge @barret_ge
0 Followers 3 Following
Afzal Hussain @afzalhussain23
75 Followers 922 Following Backend Engineer | 5+ yrs of exp | Startup Enthusiastic
davii concept @daviiconcept
43 Followers 247 Following
Claes Nilsson @ClaesNNilsson
20 Followers 109 Following
Hanna @hanna_510S
0 Followers 34 Following
Jason @JasonHassold
216 Followers 283 Following Web dev, Shopify, design, obsessed with learning Founder & lead dev https://t.co/5b551LAPp2 Shopify dev tool: https://t.co/N99rXfMYih
Petr Glaser @BleedingDev
90 Followers 150 Following
Neil Lewitton @programmingwow
30 Followers 401 Following
dantxal @dantxal1
2 Followers 34 Following
Vanshika @vanshikatech
5K Followers 197 Following SDE @JPMorgan | IG: 200k+ @codecrookshanks | 30k+ LinkedIn | GDSC Lead ‘21 | Speaker🎙️#devrel #communities #developeradvocate
Jovan @jvnkri
1 Followers 125 Following
thorgas @timhorgas
62 Followers 363 Following
Rich @cyanicp13
3 Followers 69 Following
Kris Kiwi @KrisFresh6
10 Followers 8 Following
Stefano Formicola @steformicola
97 Followers 268 Following Mobile Engineer | React Native Developer and OSS contributor 🇪🇺🇮🇹 taking a break to build a startup
Ryan Kim @ryan_kim_dev
411 Followers 281 Following 주니어 웹 프론트엔드 개발자입니다. / 경력 휴식기(24.02~06 FLab FE 멘토링 수강) / 개발 이야기, 3D, 디자인, 자동차, 잡담
Tosho @tosho
739 Followers 461 Following It's me! // alt acc @ToshoPhotos // // https://t.co/ZvXSd2jOm4
Matt Pocock @mattpocockuk
142K Followers 581 Following Full-time TypeScript educator. Ex-@vercel, @statelyai. Used to be a voice coach. He/him. Author of Total TypeScript 🧙 Hire me to teach your team TypeScript!
Theo - t3.gg @t3dotgg
137K Followers 2K Following I make videos, dev tools, companies, and investments. Founder of @pingdotgg (YC W22)
Lee Robinson @leeerob
126K Followers 706 Following VP of Product @Vercel. Helping developers build a faster web. Teaching about React and Next.js.
Addy Osmani @addyosmani
343K Followers 2K Following Engineering leader, @GoogleChrome • Author • Great user & developer experiences • @ChromiumDev @ChromeDevTools • @____lighthouse • @ChromeUXReport
Shu @shuding_
36K Followers 2K Following Core team @nextjs, @vercel AI. @v0, Satori, SWR creator. Don’t talk unless you can improve the silence.
Tim @timneutkens
39K Followers 623 Following Tech lead for Next.js and Turbopack @vercel, co-author of @nextjs, MDX, Micro, and ncc. Opinions are my own.
Evil Rabbit @evilrabbit_
19K Followers 666 Following Founding Designer @vercel @nextjs | Prev: @Auth0
Fernando Rojo @FernandoTheRojo
10K Followers 177 Following yc w’19. co-founder @ https://t.co/xHqT8QX0Ly & open source tinkerer 🇦🇷 🇺🇸
Marc Grabanski @1Marc
16K Followers 821 Following CEO & UI Developer @FrontendMasters. Created jQuery UI Datepicker. Currently into fitness 🏃♂️🤸🏻
Andreas Klinger 🏝 @andreasklinger
56K Followers 4K Following Global first-check and first-round investor; proud european – prev: 🔧 CTO & co @beondeck @producthunt @coinlist @angellist – ❤️ @susanneknoll – 💬 DMs open
Tzvetan Mikov @tmikov
4K Followers 421 Following Not my employer's opinions. Facebook, Working on Static Hermes - a native AOT JavaScript compiler, previously Bloomberg L.P. https://t.co/4Dd6s0Hm9v
Anthony Shew @anthonysheww
3K Followers 272 Following Turbo DX at @vercel | Used to play pro ⚾, now I’m a full-stack comedian.
Ivan Akulov @iamakulov
7K Followers 369 Following Web perf engineer @ Framer. Prev. web perf consultant (Google, Appsmith, Toggl, etc). Getting React interactions 2-4x faster. GDE. He/him 🏳️🌈
Kadi Kraman 💚 @kadikraman
12K Followers 701 Following Software Developer at @expo • instructor at @FrontendMasters and @eggheadio • React (Native) • GraphQL • 🇪🇪 🇬🇧
ThePrimeagen @ThePrimeagen
176K Followers 816 Following skill issues: 🟩⬛️⬛️⬛️⬛️⬛️(69/420) https://t.co/qvibjmtqFm https://t.co/gVnVukutsf
Miško Hevery (Builde.. @mhevery
51K Followers 454 Following CTO at @builderio, creator of @QwikDev, @angular, @angularjs, co-creator of #karmajs
Seth Webster @sethwebster
4K Followers 1K Following EM of React/React Native @ Meta | Photographer, Aspiring Funnyman he/him/his | threads @sethwebster
Sathya Gunasekaran @_gsathya
6K Followers 444 Following Building @reactjs compiler @meta; formerly: @v8js @google
cedric @cedric_dev
3K Followers 408 Following Doing stuff with 𝝠 @expo - Creator of https://t.co/7Xtw2U0EPi - Don't let your memes be dreams
Bel Curcio @okbel
12K Followers 3K Following engineering & jack of all trades @vercel — The Web should be fast and beautiful — ex: @mozilla @coralproject @rga
Igor Minar @IgorMinar
25K Followers 466 Following Helping make the world a bit better through better Web. I love creating great things with great people. He/him. @Cloudflare. Previously: Angular, Google, Sun
Kudo @kudochien
3K Followers 691 Following React Native enthusiast, author of react-native-skia and react-native-v8. Working on @expo previous @puffinbrowser @trendmicro
Hank Taylor @theHankTaylor
1K Followers 523 Following Marketing/Ops/DevRel advisor for startups selling technical products to devs from 0 to $30M Prev. VP Marketing ▲@Vercel / @Nextjs. Also @GitLab, @Neo4j, @MySQL
Kara Erickson @karaforthewin
13K Followers 629 Following Staff eng / TLM of Aurora team @ Google Chrome. She / her Bluesky: kerickson@
Ben Hong @bencodezen
11K Followers 1K Following 🧑💻 staff devex engineer 👨💻 @vuejs core team 🧑💻 @angular team 👨💻 @nuxt_js ambassador 📝 @obsdmd nerd
Brendan Falk ◧ @BrendanFalk
3K Followers 2K Following Co-founder & CEO at @fig (acquired by @Amazon) | Prev. @ycombinator @brexHQ @harvard | Australian 🇦🇺
Matt Biilmann @biilmann
10K Followers 3K Following CEO and Co-founder of Netlify, builder of things. "It's a webpack, Michael. What could possibly go wrong?!"
Eric Simons @ericsimons40
14K Followers 975 Following CEO @StackBlitz making web development fast & secure. Viva la Web!
shubhie @shubhie
6K Followers 591 Following Software Engineer @googlechrome, Web Platform. Engineering lead, Anti-tracking. Privacy sandbox. Past: Chrome Aurora, #Blink, google JS infrastructure
Xuan Huang · 黄玄 @Huxpro
12K Followers 1K Following ⚛️ Formerly @Reactjs core (Forget✨), @ReactNative, @HermesEngine, @ReasonML · 🔨 UI Fwk/PLR/Xplat/Web/+AI @Bytedance ·👨🔬 λ.TaPL/FP/Compiler/VM/@TC39 · e/acc
Iris van Ollefen @irisvanollefen
61 Followers 129 Following web developer https://t.co/eGmJVHkOi4 @CMDAmsterdam graduate
Expo @expo
53K Followers 1K Following Develop, review, & deploy native apps from a single React codebase for Android, iOS, & web. Status: @expo_status Discord: https://t.co/zLNkwFJ7oV
Ben Awad @benawad
118K Followers 592 Following building https://t.co/SZfF7dW76F • software consultant • youtuber
Vincent Riemer @vincentriemer
10K Followers 583 Following 💼 Xplat React @ Meta 📷 "Shot on iPhone" Photographer 👨 He/Him 🟦 @vincentriemer.social 🟪 @[email protected]
Phil 🫠 @_philpl
9K Followers 712 Following 👋 strangely typed • dev tools at @expo 𝝠 • n+1 semi-archived GraphQL/TS/React projects 🗻 • urql core team • 🐙 github @kitten • 🗨️ discord @philpl
brent 🇺🇦 @notbrent
16K Followers 3K Following Web/mobile developer working on Expo (https://t.co/7wMi8MMZjc) and React Native. He/him.
Jane Manchun Wong @wongmjane
165K Followers 2K Following the real hidden features are the friends we made along the way・forbes 30u30・engineer × security at @instagram・🇭🇰×🇯🇵
Zack Argyle @ZackArgyle
8K Followers 1K Following Building DMs on https://t.co/EJvgz0YRNJ. Terrible Dungeon Master. Decent human. Prev: React Native Core+Messenger+Pinterest+Playstation. Nights @SFFAuthor.
Johannes Schickling @schickling
8K Followers 587 Following Building a local-first music app @overtone_app. Sometimes over-engineering. 🎙️ @localfirstfm. DX @EffectTS_. Founded @prisma. he/him.
Franziska Hinkelmann,.. @fhinkel
14K Followers 3K Following Principal Engineering Manager @Microsoft. @nodejs TSC member. Former @Google Chrome @v8js. Puppies and tacos. she/they
Paul Irish @paul_irish
227K Followers 3K Following @[email protected] on Mastodon I 💗 the web • I work on performance, Chrome DevTools, Lighthouse, and PageSpeed Insights.
@stack_tracy_ @lydiahallie For sure. Thank you for creating @lydiahallie
It's time to start the European version of e/acc: 🇪🇺 eu/acc "Innovate, don't regulate" As a counter to the now rampant degrowth anti-tech anti-capitalist mind virus that's taken over most Europeans in 2024
The most concerning part about this is that most Europeans don't realize how stagnant Europe has now become Europeans are literally blue-pilled and are mostly concerned with climate change, immigration and the Ukraine war Nobody in Europe is thinking why increasingly everything…
Wake up Europe, the digital age is bypassing you. You have no Google , Amazon, Meta, Apple. You arrogantly called SpaceX a fanciful dream and it wiped out the European Space Agency. You have no Nvidia and your response to AI has been to regulate before you have anything domestic…
Anyway speaking of dirigiste failure, here's another banger. Going from calling reusable rockets a dream to not having a space industry in 10 years. Good job guys!
🚨 Tesla FSD 12 is running in Europe (Germany) and Tesla is giving demos to regulators 🚨 $TSLA
🚀 Build native iOS apps over-the-air with @expo 51 beta! 𝝠 npx expo run:ios --device ◆ Supports Vision Pro 🥽 ◆ Connects to all iOS dev devices on the network 🌐 ◆ Feels like absolute magic 🪄
🌶️ The best feature the React Native team could ship is precompiled code. iOS build times could be ~95% faster! Here's the stats (more in thread) ↓ Before: 82s ◆ pod install: 23s ◆ xcodebuild: 59s After: 4s 🚀 ◆ pod install: 1.7s ◆ xcodebuild: ~2.3s — Before / After
Mobile’s only hope is @expo. Literally every AI app I’ve used is built on Expo lol
unbelievably excited to be joining @vercel! still pinching myself as I've looked up to this team for years i'll be working on the devrel team, helping developers build incredible things
After over a year of building @dubdotco, we are finally launching on @ProductHunt → d.to/ph We're building the link management infrastructure for modern marketing teams. Think of us as the open-source Bitly successor. Your support would mean the world! 😸
This is my first week on the design team at @ClerkDev. Excited to build some nice things with talented people!
🥳 We need confetti cannons for when @expo CLI bundles an update in <500μs
Thought of a way to make cached bundling ~6x faster in Expo CLI... The hardest part has been coming up with a pretty log format for Fast Refresh 🫣
That is the actual sign at Starbase, Texas
Starship will take humanity to Mars
Big news! Today INP (Interaction to Next Paint) officially became a Core Web Vital, replacing FID (First Input Delay). It's a much better input responsiveness metric.
Frontend Masters is consistently helping me level up my skills. Their "Testing Your JavaScript Knowledge!" course by Lydia Hallie was fantastic. I learned a lot about various advanced JS concepts, and the course quiz based approach was super helpful. Definitely recommend!
New course by @lydiahallie: Testing Your JavaScript Knowledge! Challenge yourself with 50 interactive quiz questions on the event loop, scopes and closures, the "this" keyword, classes and prototypes, garbage collection, and more frontendmasters.com/courses/javasc…
Netherlands has no real competitive industries except ASML Banking isn't competitive No real startups except Adyen Companies there are to avoid tax (see IKEA etc) Unambitious conformist population Trying to kill of their agricultural sector
@levelsio You’ve said that the Netherlands is dying. Why do you think that is?
Just made the best angel investment of my life ❤️
POV: you just performed authentication in a layout route
To say this even strongly. I personally believe that this should actually be the law. I think a local authorization check should be part of regulation of software development. x.com/sebmarkbage/st…
I have a feeling that developers love AI-powered chat-based UIs a lot more than normal users do. Determinism and discoverability are extremely valuable.
The perf impact of this is curious. Arguments are very cheap in JS, unlike objects. Using the wrong order will kill the hidden class. A lot of optimizations need to happen to eliminate the object allocation and the property access cost. The function better be hot and inlineable.
Habit: If a function accepts two arguments of the same type, I accept an object. This protects from accidentally passing args in the wrong order.
Trends for United States
You might like
