Violina Popova

As React applications scale, asynchronous logic often turns into a source of fragility and frustration. Scattered useEffect hooks, ad-hoc retries, manual loading states, and inconsistent error handling create race conditions, memory leaks, and business logic that’s nearly impossible to test reliably.This talk introduces Effect-TS - a powerful, type-safe toolkit that brings clarity and control to async workflows in React. Instead of functional programming theory, we’ll focus on practical, battle-tested patterns that solve real production problems:Separating effects from execution for better composabilityTyped error channels that eliminate silent failures and runtime surprisesDeclarative retries, cancellation, and parallel executionBulletproof handling of component unmounts and stale requestsSmooth, incremental adoption in existing React or Expo codebasesAttendees will leave with concrete strategies to transform chaotic async code into logic that is predictable, testable, and maintainable - even in large, complex applications.

By 2025, our React and React Native apps were struggling with inconsistent APIs, causing bugs, duplicated work, and slow onboarding. We adopted a schema-driven workflow with OpenAPI, generating type-safe TypeScript clients and enabling AI-assisted development of hooks, components, and tests. This talk shares our real-world lessons, practical strategies, and incremental approach to ship features faster and more reliably across web and mobile.

Master real-time communication in React and React Native! We'll explore WebSockets, WebRTC, and the future with WebTransport to build highly interactive, live applications across web and mobile platforms.