Videos by Kacper Kapuściak
2026
Intro to e2e: agentic end-to-end testing, live
A live session that starts with an app that has no tests: run npx e2e init, have a coding agent write end-to-end tests for real flows, read a failing run, run the same test on an iOS simulator, and finish with the suite running on every pull request.
530 views
Getting Started with Agentic e2e in 4 Minutes
A hands-on walkthrough that takes a simple Next.js to-do app from zero to a working agentic test suite with e2e, the open source agentic end-to-end testing framework by TesterArmy.
634 views
Agentic E2E Explained in 2 Minutes
e2e in two minutes: an open source agentic end-to-end testing framework that mixes the flexibility of AI agents with the determinism of classic end-to-end testing, in one API for web, iOS and Android.
7,443 views
Argent Explained in 60 Seconds
Meet Argent, an agentic toolkit that lets AI control, debug and profile mobile, web, TV and desktop apps: tapping, swiping, inspecting the component tree, network requests and performance on a real device or simulator.
1,675 views
Radon | An IDE for React Native & Expo
Radon turns VS Code and Cursor into a React Native IDE with built-in iOS and Android previews, an element inspector, a network inspector and instant replays.
8,858 views
2025
React Conf 2025 Recap: React Native 0.82, Hermes V1 & New Architecture
A livestream recap of React Conf 2025: React Native 0.82, experimental Hermes V1 support, and the first release running entirely on the New Architecture.
3,094 views
Reanimated 4 live-coding – All you need to know about CSS Transition & Animations
A live-coding session showcasing how powerful Reanimated 4's CSS Transitions and Animations are, and what the future of animations in React Native looks like.
4,980 views
Introducing React Native Reanimated 4
React Native Reanimated 4 is stable: CSS Animations and Transitions, multithreading with React Native Worklets, and saying goodbye to the Legacy Architecture.
17,152 views
2024
Build a React Native app with Radon IDE in 1 hour
A one-hour live-coding session building a React Native app with Radon IDE, the VS Code extension that turns your editor into a full React Native and Expo IDE.
2,175 views
Expo Video Explained in 100 Seconds
A short, concise tutorial on Expo Video, the modern video playback library for React Native and Expo: the useVideoPlayer hook, the VideoView component, full-screen, Picture-in-Picture and background play.
9,981 views
React Native WebGPU Explained in 100 Seconds
The basics of React Native WebGPU in under two minutes: William Candillon's implementation of WebGPU using Dawn, then in technical preview and not yet suitable for production.
1,440 views
2023
How to Make a Sensor-Based Parallax Effect in React Native
A step-by-step tutorial on adding a sensor-based parallax effect to a React Native app with the useAnimatedSensor hook from React Native Reanimated.
4,949 views
How to Make a Bottom Sheet with React Native Reanimated
A step-by-step tutorial on building a dynamic bottom sheet with React Native Reanimated, covering layout animations, gestures and runOnJS.
36,891 views