The panelists describe varied routes into programming, from learning Bash and JavaScript for work to starting with HTML, CSS, PHP, or C++. Several adopted React Native when they needed to build mobile apps and could reuse JavaScript and React experience. Mike Grabowski says it helped him avoid building a separate Android app in Java.
Q&A Panel
Speakers
Mike Cyril, co-founder of Callstack, hosts a React Native EU Q&A panel at Callstack’s Wrocław office with React Native contributors and maintainers Wojtek Witek, Pavel Trisva, Satya, and Mike Grabowski.
Pavel is interested in using JSI for synchronous code splitting in Re.Pack, while another panelist points to Fabric and synchronous layout measurement. The panel also highlights improving upgrades and a more coordinated release process, with Facebook and Microsoft contributors taking greater ownership. Satya explains JSI as the foundation for Turbo Modules and Fabric, which handle native modules and UI rendering.
One streaming application targets six React Native platforms, with plans to expand to nine to eleven; the panel estimates about 60% of its code is shared. Platform differences still require custom APIs and native code, and the panelists expect Windows and macOS library support to vary because each platform adds maintenance work. They also discuss wearable support, a Viro library for AR and VR, and React Navigation’s limitations on desktop.
Library maintainers say issue triage and housekeeping can take more time than coding, with one maintainer estimating that coding accounts for about 10% of the work. Pavel describes Re.Pack as plugins that make webpack usable for React Native bundling, and explains that it can work with Hermes. The panel advises evaluating UI libraries against a project’s design needs and notes that Microsoft contributes to Windows support and React Native tooling.
Asked about React Native’s future and Airbnb’s departure, the panel says Airbnb’s experience reflected its native team and integration needs, and that the framework and integration options have since changed. Panelists point to Facebook, Microsoft, and less visible production apps as evidence of continued adoption. The closing view is that the new architecture and enterprise involvement could support further growth.
Takeaways
- Choose React Native when shared JavaScript skills and cross-platform delivery fit the product’s needs.
- Budget for platform-specific code; one production example shared about 60% across six platforms.
- Treat open-source maintenance as ongoing issue triage and documentation work, not just coding.
- Evaluate UI libraries against the actual design before adopting or replacing them.
- Check library support and maintenance ownership for every platform the product must target.
Mentioned in this talk
MicrosoftSearch inside this talk
What was claimed 27
- builtCallstack Team built Re.Pack
“we also contribute to many open-source projects such as ... Re.Pack”
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Microsoft uses React Nativein brownfield apps“how Microsoft is using React Native at scale”
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- foundedMike Cyril founded Callstack Teamco-founder
“I'm Mike Cyril, co-founder of Callstack.”
0:12inMobile Payments in React NativeYouTube Verified2 sources· Talk
- integrates with
“We work closely with Meta, Callstack, and others.”
0:17inFrom Gaming to Productivity: how Microsoft is using React Native across a portfolio of experiencesYouTube Verified7 sources· Talk
- uses
Meta uses React Native
“we've been testing the rollout of them within our own apps, including the flagship Facebook app.”
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- built
“React Navigation from Satya”
YouTube Verified2 sources· Talk
- uses
“At Callstack, we're a consultancy with React and React Native expertise”
YouTube Unverified1 source· Talk
- role atMike Grabowski is CTO at Callstack Team
“he's a core contributor to React Native and the CTO at Callstack”
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