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Doug Lowder

@douglowder.com

Currently at @expo.dev . Building and maintaining React Native for Apple TV and Android TV. https://github.com/react-native-tvos/react-native-tvos

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Latest posts by Doug Lowder @douglowder.com

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Ship smaller OTA updates: bundle diffing comes to EAS Update in SDK 55 SDK 55 introduces bundle diffing in EAS Update. Devices now download patches instead of full bundles, reducing download sizes by up to 75%.

Less is more: Bundle diffing comes to EAS Update.

Instead of downloading the full bundle on every update, devices now receive a binary patch of only what changed.

Result: ~75% smaller downloads.

♦ A 3MB update drops to ~0.75MB
♦ Opt-in beta, safe fallback to full bundles

expo.dev/blog/ship-sm...

27.02.2026 19:40 👍 17 🔁 3 💬 0 📌 0
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Expo SDK 55 - Expo Changelog Learn about the changes and how to upgrade

Expo SDK 55 is out 😅
RN 0.83, React 19.2 & a long list of things that make your app faster, smaller, & easier to build

♦ Hermes bytecode diffing cuts update sizes by ~75%
♦ Brownfield support gets a serious upgrade
♦ MCP now queries EAS + TestFlight crashes

Full changelog: expo.dev/changelog/sd...

26.02.2026 00:11 👍 53 🔁 8 💬 4 📌 0

I have seen cases where an extra noop instruction had to be inserted in assembly code, to fix a timing issue… 😃

22.02.2026 12:36 👍 1 🔁 0 💬 0 📌 0

feels cruel for Bluesky to have a Popular With Friends tab, if any of us were popular with friends we wouldn't be on Bluesky

16.02.2026 08:53 👍 945 🔁 158 💬 9 📌 14
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At 9:18, 3rd period of the Finland-Switzerland women's ice hockey QF game, the ice crew came to clean the ice during a pause

What follows is the funniest use of the slo-mo alternate angle tech I've seen them use during these Olympics of one of the crew members falling

15.02.2026 00:14 👍 7782 🔁 2369 💬 9 📌 176

Saw Super Bowl ad for new “Disclosure Day” movie and all I could hear was “Epstein Files Disclosure Day”

09.02.2026 00:10 👍 2 🔁 1 💬 0 📌 0
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Complete React Native: Build iOS & Android Apps with Kadi Kraman Use your React skills to build feature-rich, native mobile apps for iOS and Android using React Native and Expo.

Try frontendmasters.com/courses/reac...

26.01.2026 16:33 👍 1 🔁 0 💬 1 📌 0

There is also the screen dimensions hook from React Native itself, as in this example github.com/react-native...

26.01.2026 16:27 👍 1 🔁 0 💬 0 📌 0
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DeviceMotion A library that provides access to a device's motion and orientation sensors.

docs.expo.dev/versions/lat...

26.01.2026 16:23 👍 0 🔁 0 💬 0 📌 0

I’m not sure what that has to do with React Native… in any language it’s pretty easy to build a flow that takes you to a dead end with no return path (not that I’ve ever inadvertently done that 😃)

28.12.2025 01:52 👍 0 🔁 0 💬 0 📌 0

I love it… it has kept me gainfully employed for quite awhile now 🎉

22.10.2025 22:54 👍 0 🔁 0 💬 0 📌 0

The joys of being a developer 😀

22.10.2025 21:43 👍 1 🔁 0 💬 0 📌 0

My 14-year-old self would never have guessed that, in 50 years' time, all the world's music would be available at the click of a button, you'd navigate the globe by carrying a tiny computer around in your pocket, and the US President would post a video of himself shitting over American citizens.

19.10.2025 09:34 👍 14713 🔁 3479 💬 21 📌 164

Or compiling React Native itself, especially the Android artifacts 😃

19.10.2025 02:45 👍 3 🔁 0 💬 0 📌 0
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Does Palantir face a new threat from Salesforce? Software giants clash over lucrative government contracts. A rivalry between Palantir and Salesforce is heating up as Salesforce launches a national security business division called Missionforce.

I don’t think so, but here is the direct link: www.marketwatch.com/story/does-p...

13.10.2025 11:09 👍 1 🔁 0 💬 1 📌 0
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Does Palantir face a new threat from Salesforce? Software giants clash over lucrative government contracts. — MarketWatch Rivalry heats up as Salesforce launches a national security business division called Missionforce

I’m sure this is totally unrelated (*sarcasm*)…. stocks.apple.com/AJ6PMLVSjQsq...

11.10.2025 05:11 👍 3 🔁 0 💬 1 📌 0
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feat: upgrade to Expo SDK 54 by coolsoftwaretyler · Pull Request #2984 · infinitered/ignite Description This PR will upgrade Ignite to Expo 54. Moslty package.json changes, with a couple notable additions: Bumps to Expo 54, and all its required dependencies from install --fix (as of the ...

It took a little longer than we wanted, but Ignite is upgraded to Expo SDK 54!

github.com/infinitered/...

04.10.2025 00:17 👍 7 🔁 2 💬 0 📌 0
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feat(expo): Add WinterCG URL support by EvanBacon · Pull Request #24973 · expo/expo Why Split out of feat: Migrate SDK to built-in URL and URLSearchParams APIs #24941 but without the SDK integration. Add built-in support for the whatwg-compliant URL and URLSearchParams API. Injec...

The replacement of URLSearchParams was done as part of the work to have a WinterCG-compliant fetch implementation. See github.com/expo/expo/pu... .

02.10.2025 19:52 👍 2 🔁 0 💬 0 📌 0

You’re doing great I’m only 0.1x

02.10.2025 06:34 👍 0 🔁 0 💬 0 📌 0
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Expo Set of common methods and types for Expo and related packages.

Expo fetch does support streaming. docs.expo.dev/versions/lat...

01.10.2025 22:48 👍 3 🔁 0 💬 1 📌 0

I tried to come up with something witty here, but really can’t improve on this quote 😃

27.09.2025 10:53 👍 4 🔁 0 💬 0 📌 0
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Expo Expo is an open-source platform for making universal native apps for Android, iOS, and the web with JavaScript and React.

The new 𝝠 Expo home page is live: expo.dev

We were overdue for a new home that tells the story of what Expo has become: Everything you need to build apps.

We added more pages to explain how Expo serves different stages of business growth across different industries. We'll 🧵 some of those below ↓

18.09.2025 16:52 👍 28 🔁 3 💬 2 📌 3
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Lean for JavaScript Developers — overreacted Programming with proofs.

⚛️📝 New on Overreacted: Lean for JavaScript Developers

02.09.2025 15:42 👍 99 🔁 15 💬 5 📌 4
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Low key one of my favourite React Native Skia Animations I've ever made

14.09.2025 14:20 👍 18 🔁 4 💬 0 📌 0

This is excellent and nuanced writing. "The same values that make us horrified at his violent death are the ones that should embolden our commitment to defeating the politics he worked for in life."

14.09.2025 21:04 👍 7 🔁 0 💬 0 📌 0
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California's first solar-covered canal is now fully online The 1.6-MW pilot system is among a growing number of initiatives to put solar over waterways. The approach could generate gigawatts of power nationwide.

Have you heard the good news?

California finished a project that will create tons of clean renewable energy & help prevent evaporation and algae formations while keeping solar panels cooler & more efficient.

This article made my day!

www.canarymedia.com/articles/sol...

14.09.2025 15:19 👍 4452 🔁 1316 💬 121 📌 67

there's a lot of exciting things going on in SDK 54, but the less exciting changes will hopefully make your upgrade smoother and your everyday DX with dependencies more stable 💕

All kinds of reliability improvements land in SDK 54!
small thread about those 🧵

12.09.2025 06:33 👍 19 🔁 2 💬 2 📌 0

Try out Expo UI on both mobile and TV! 😀 github.com/react-native...

13.09.2025 01:10 👍 10 🔁 1 💬 0 📌 0
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Which work? Calling for gay people to be stoned to death? Blaming airplane crashes on black pilots? Anti-vax bullshit? Election denialism? Pushing Great Replacement Theory?

Kirk’s murder is awful and ominous for this country. But no, we don’t need to honor him or “continue his work.”

11.09.2025 01:32 👍 30282 🔁 6744 💬 1385 📌 570

Expo TV templates and demos have been updated to the new SDK release, and to React Native TV 0.81.4-0. The UpdatesAPIDemo repo has also been updated for SDK 54 and includes examples of the new expo-updates features!

10.09.2025 22:50 👍 10 🔁 0 💬 0 📌 0