staff engineer at @bitvavocom • startup & open-source enthusiast • passionate about react & react native • 🇧🇷 → 🇳🇱

Joined March 2016
117 Photos and videos
Pinned Tweet
19 Nov 2019
Today the React Native Community is excited to launch `react-native doctor`, a brand-new React Native CLI command to help you out with getting started, troubleshooting and automatically fixing errors with your development environment: facebook.github.io/react-nat…

Check out `react-native doctor` built by @lbentosilva and many others. It's a new command to troubleshoot and fix errors in your environment so you can spend more time building your apps! facebook.github.io/react-nat…
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6 desenvolvedores na entrevista, nenhum passou no teste do pezinho
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The Gemini team seeing Google invest in their largest competitor
BREAKING: Google plans to invest up to $40 billion in Anthropic.
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Formatting text input has been a pain point in RN because of async updates. We solved this using worklets running on the UI thread.
Flickers don't belong in premium apps! That's why we built react-native-transformer-text-input. Instead of going Native/JS/Native, it runs on the UI thread, thanks to @swmansion 's RN worklets. Demo built in 15 minutes with @expo Skills.
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Almost got hacked this morning - here's a replay of what happened: 1. A VC whom I've met in person reached out for a catchup 2. She sent me a Microsoft Teams link a few min ahead of the meeting 3. When I joined, it asked me to download update script 4. Got a funny feeling and ended the call immediately 5. Claude inspected the file and it was indeed malicious Not sure if this person was just hacked or a bad actor, but I wanted to post this as a PSA. Stay safe.
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We’re building a Claude app clone in React Native to showcase various open-source libraries and common patterns from mobile apps. Markdown streaming, haptic feedback, keyboard handling, text-to-speech etc. Please leave a ❤️ if you find this interesting
Let's build Claude clone in React Native #1 👀 Rendering markdown from an LLM stream is hard without a reliable tool. Models send text token by token, so markdown parsers need complete tokens to know what to render. We built react-native-streamdown to handle all of that complexity. For you, it's 2 lines of code. See how it works 👇
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Ever wondered why animations on #reactnative's new architecture were so laggy? We partnered with the @discord team, found the bottlenecks, and helped make their mobile app feel buttery smooth. Here’s the before/after 👇
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Replying to @peterpme
Or just use Argent, our new AI tooling for profiling and optimization React Native apps
Profiling React Native gives you a broad spectrum of distinct insights. 🧩 Because Argent keeps the context, you have total flexibility: 🔨 Fix one issue, then come back and re-query the data for another 🔍 Or, immediately switch Argent's focus to dig deeper into an anomaly. Either way, re-querying prevents false positives and having to run redundant profiling sessions. Great for deep drill-downs 🕵️ Just take a look 👇
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Mar 31
🚨 CRITICAL: Active supply chain attack on axios -- one of npm's most depended-on packages. The latest axios@1.14.1 now pulls in plain-crypto-js@4.2.1, a package that did not exist before today. This is a live compromise. This is textbook supply chain installer malware. axios has 100M weekly downloads. Every npm install pulling the latest version is potentially compromised right now. Socket AI analysis confirms this is malware. plain-crypto-js is an obfuscated dropper/loader that: • Deobfuscates embedded payloads and operational strings at runtime • Dynamically loads fs, os, and execSync to evade static analysis • Executes decoded shell commands • Stages and copies payload files into OS temp and Windows ProgramData directories • Deletes and renames artifacts post-execution to destroy forensic evidence If you use axios, pin your version immediately and audit your lockfiles. Do not upgrade.
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overheard a new insult: you have a short context window 💀
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Hey! Looking for a full-stack job. Global remote. Contract or full-time. I build design tools and contribute to popular open-source projects. My CV: trysound.io/hire-me DM or email me at me@trysound.io
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Mar 23
“oye Claude haz todo mi trabajo hoy, yo me voy a por un café y a dar una vuelta, hablamos. make no mistakes”
Mar 23
You can now enable Claude to use your computer to complete tasks. It opens your apps, navigates your browser, fills in spreadsheets—anything you'd do sitting at your desk. Research preview in Claude Cowork and Claude Code, macOS only.
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Mar 19
no bro don’t buy airpods. you need the Sony WH-1000XM5-WHCH720N-WF1000XM5-CH520
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Mar 17
🤖 New in Expo SDK 55: Jetpack Compose in React Native. Not a JS approximation. The real thing. Material Design 3 components, Compose modifiers, native rendering. SwiftUI on iOS. Compose on Android. One codebase. Get all the details in @kudochien's blog post below ↓
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Mar 16
You're laughing? CloudFlare forked an open source repo and you're laughing?
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Mar 14
A small thank you to everyone using Claude: We’re doubling usage outside our peak hours for the next two weeks.
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Tips for getting the most out of OpenAI's Symphony (what actually worked for me): - Have an agent do an assessment of the task first to pick which model to execute on. You don't need the most powerful model to write docs - The "Merging" lane doesn't need 5.4 to land a PR. Cheaper models handle them just fine and can save you some tokens - Create a Testing lane so lightweight models can test the output and refuse/approve the work before you review it - Have Codex improve on the web dashboard, I had it create a log console per task so I can see which models are being used for what tasks and what is slowing them down - Create helpers for common tasks so it's clear to agents how to get them, e.g. I created a small bash script so agents can easily fetch ticket details from Linear and update the task - After each batch of tasks, spin an agent to analyze past sessions and identify bottlenecks, continuous learning and improvement Symphony is quite impressive but will still eat your token budget alive if you don't pay attention
Any insights to share? 🙂 so far I wonder why the agent always consumes the full workflow file, regardless of the stage. And why it has to do orientation manually
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Congratulations on working 40 hours! You are now free to dissociate for 2 days
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🎁 Happy Friday - Opus 4.6 1M is now the default Opus model for Claude Code users on Max, Team, and Enterprise plans. Pro and Sonnet users can opt in with /extra-usage.
Mar 13
1 million context window: Now generally available for Claude Opus 4.6 and Claude Sonnet 4.6.
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