Scaleup Guide
React Native's New Architecture: Fabric, TurboModules and JSI
Direct Answer
This guide gives a simple overview of react native's new architecture: fabric, turbomodules and jsi. If you need help turning the idea into a website, app, or business system, the related Scaleup Infotech services are listed below.
The New Architecture is now the default in React Native. It removes the old asynchronous 'bridge' that serialized every message between JS and native — the source of years of performance bottlenecks.
JSI — The Foundation
The JavaScript Interface lets JS hold direct references to native objects and call them synchronously, with no JSON serialization. This is what makes everything else possible.
Fabric — The New Renderer
- Concurrent rendering support, aligning RN with React 18+ features like Suspense.
- Synchronous layout and measurement, reducing flicker in complex UIs.
- A shared C++ core across platforms for consistency.
TurboModules — Lazy Native Modules
TurboModules load native modules only when first used (instead of all at startup), cutting app launch time, and expose type-safe interfaces via Codegen.
Migrating Old Native Modules
Legacy native modules still work via the interop layer, but for best performance migrate them to TurboModules with Codegen-typed specs.