marcello 🐀 🍕

React Native/Expo app developer.
Owner of builder and Indie developer.

[manny @manny_eI]

re-parenting views in react native is easy thanks to @ziusko’s react native teleport library. used it to create visual/playback continuity moving between inline and viewer for media.

[Expo @expo]

Swift now talks to JSI directly. The Objective-C++ middle layer is gone.

In Expo SDK 56 we rewrote the native module infrastructure on Apple platforms. Calls are faster and the stack is simpler. The seam that used to make debugging miserable is gone too.

Here's how 🧵

[Aiden Bai @aidenybai]

Introducing React Native Doctor

Find performance and security bugs in your mobile app

Run via CLI and fix with agents. Fully open source

npx react-doctor@latest

[Evan Bacon 🥓 @Baconbrix]

1) add expo mcp
2) ask the agent to fix all of your TestFlight crashes
3) watch it magically work

[Software Mansion @swmansion]

Local models are becoming increasingly capable in agentic workflows 🪄

Here’s @googlegemma 4 controlling the iOS simulator with Argent 👇

[William Candillon @wcandillon]

Woah 😮

[Evan Bacon 🥓 @Baconbrix]

You can now 'inspect element' for any iOS app directly in Codex or the browser!

~ / npx serve-sim

S/O @rounak for the contribution 🚀

[Supabase @supabase]

supabase-micro a micro-python library that makes it easy to connect microcontrollers to Supabase

[Steven @StevenCravotta]

I recorded a full video explaining how to acquire your first 10,000 app users without spending a dime

[Movez @0xMovez]

This 1 hour podcast with the Head of Claude Code will teach you more about vibe-coding than 100 paid courses.

Bookmark this & give it 1 hour today. It's the best video about AI you'll watch this week. Then read the article below.

[Parth Jadhav @ParthJadhav8]

If you have an iOS app this is gold. A SKILL which automates asset capture for your app in multiple languages.

Not only screens, but widgets & individual elements as well.

Don't start your app in every language and capture screenshots like a caveman 😭 Use this 👇

https://t.co/PReel0dXEk

[Adam Wathan @adamwathan]

Quick https://t.co/AIW2moVHHW demo — generating multiple design ideas to choose from, no matter what tech stack you use:

[Thomino @ThominoDesign]

Uniwind Starter Template is now available 🚀
https://t.co/oza9V6fRhx

40+ components, dark & light theming, tab and drawer navigation, basic screens and Claude/Cursor rules included.

Built with @reactnative @expo @swmansion reanimated and Uniwind

[Software Mansion @swmansion]

Meet Pulsar: your haptic presets library for Swift, Kotlin, and React Native! 🚀

👉 150+ free patterns you can browse, filter, preview, and ship in minutes
👉 Audio preview of each preset so you can test it on a simulator without deploying
👉 Playground and app that let you feel the haptics on your phone

[Evan Bacon 🥓 @Baconbrix]

In the next version of expo

create-expo-app will auto-generate an AGENTS.md file with official Expo Agent skills

this guides agents towards the latest APIs and domain-specific knowledge

also creates a symlink to the non-standard `CLAUDE.md`

disable with --no-agents-md

[Paul Copplestone - e/postgres @kiwicopple]

we just released the official Agent Skills for @supabase

it's a set of instructions that teach agents how to build with Supabase correctly, including:

◆ Security and RLS
◆ Docs and product knowledge
◆ Schema management
◆ CLI + MCP instructions

[Evan Bacon 🥓 @Baconbrix]

The new Expo Agent skills improve native UI usage (headers, toolbars, sheets) by +46% in our evals 🚀

Add them to Claude Code:

/plugin install expo@claude-plugins-official

Other agents:

bunx skills add expo/skills

[Railway @Railway]

We moved Railway's entire frontend off Next.js. Two PRs, zero downtime.

Builds went from 10+ minutes to under two. 200+ routes on @vite_js + @tan_stack Router, instant HMR, and dev server startup in seconds.

@vrzgc's full breakdown: https://t.co/01jxBHWEqZ

[Adam Lyttle @adamlyttleapps]

Building a high converting app onboarding flow is hard..

So I built a Claude Skill that does it for me

Instead of spending hours figuring out the right questions and pain points… now it's done in 5 minutes

Just point it at your codebase and it does the rest

Questionnaires. Custom plans. App demos. The exact strategy used by Cal AI ($1M/mo) and Mob ($100k/mo)

It's the App Onboarding Questionnaire skill and it's available on github here:
https://t.co/zinpGegRX0

[Expo @expo]

In SDK 55 𝚎𝚡𝚙𝚘-𝚌𝚘𝚗𝚝𝚊𝚌𝚝𝚜 and 𝚎𝚡𝚙𝚘-𝚖𝚎𝚍𝚒𝚊-𝚕𝚒𝚋𝚛𝚊𝚛𝚢 get a full API redesign.

Object-oriented, granular access, no more fetching massive objects just to read one property.

◆ One-line contact updates with .𝚙𝚊𝚝𝚌𝚑()
◆ Builder-pattern media queries

@WPSmaga shows the code in the blog below ↓