Can Angular and React run side by side during migration?

Yes. We use Module Federation or custom bridges to run both frameworks simultaneously, allowing incremental migration without a big-bang rewrite.

How do we handle Angular services in React?

Angular services are converted to custom React hooks or context providers. Dependency injection is replaced with React's built-in composition model.

Will our Angular unit tests be reusable?

The test logic and assertions are reusable, but test syntax changes from Jasmine/Karma to Jest/React Testing Library. We migrate tests alongside components.

Migrate from Angular to React

Move to React's flexible, component-driven ecosystem with a smaller bundle size and access to the largest frontend developer community.

Migration: Angular to React

From Angular to React

Why Migrate

Smaller Bundle Size: React's core library is significantly smaller than Angular's framework. Combined with tree-shaking, this leads to faster initial page loads.
Larger Talent Pool: React is the most popular frontend framework by adoption. Finding and hiring React developers is faster and often more cost-effective.
Flexible Architecture: React's unopinionated approach lets you choose the best tools for state management, routing, and styling rather than being locked into Angular's prescribed patterns.

Migration Roadmap

Component Mapping (1–2 weeks): Map Angular components, services, and modules to React equivalents. Define state management strategy and routing approach.
- Component migration mapping document
- State management architecture (Redux/Zustand)
- Routing strategy with React Router
Parallel Build (4–8 weeks): Build React components alongside Angular using Module Federation or iframe bridges. Migrate page by page while both frameworks coexist.
- React component library
- Shared state bridge between Angular and React
- Migrated pages with visual regression tests
Angular Removal (1–2 weeks): Remove the Angular framework once all pages are migrated, optimize the React bundle, and run final performance audits.
- Angular-free production build
- Lighthouse performance report
- Developer onboarding guide

Risks & Mitigation

Angular-specific patterns (RxJS, dependency injection) have no direct React equivalents: We map RxJS observables to React hooks and replace dependency injection with React context or composition patterns during the architecture phase.
Visual regressions during component migration: We use visual regression testing tools like Chromatic to catch pixel-level differences between Angular and React versions of each component.

Estimated Scope

Hours: 150–300 | Cost: $300–$600 | Timeline: 6–12 weeks

Frequently Asked Questions

Can Angular and React run side by side during migration?: Yes. We use Module Federation or custom bridges to run both frameworks simultaneously, allowing incremental migration without a big-bang rewrite.
How do we handle Angular services in React?: Angular services are converted to custom React hooks or context providers. Dependency injection is replaced with React's built-in composition model.
Will our Angular unit tests be reusable?: The test logic and assertions are reusable, but test syntax changes from Jasmine/Karma to Jest/React Testing Library. We migrate tests alongside components.