React App Builder

React remains the dominant framework for building web application interfaces, powering everything from small personal projects to enterprise applications serving millions of users. However, starting a new React project still involves significant boilerplate: configuring build tools, setting up routing, choosing a state management solution, integrating a component library, and establishing TypeScript conventions. Fabricate eliminates all of this setup time by generating complete, well-architected React applications from descriptions.

Fabricate generates React code that leverages the framework's latest capabilities. Functional components with hooks are the default pattern, with proper use of useState, useEffect, useCallback, useMemo, and custom hooks where appropriate. The AI understands when to use React Context for simple state sharing versus more sophisticated solutions for complex state management, making architecture decisions that fit the scale of your application.

The component architecture generated by Fabricate follows established React best practices. Presentational and container components are separated appropriately. Reusable UI components live in a shared directory while page-specific components are colocated with their routes. Each component receives a proper TypeScript interface for its props, ensuring type safety across the application and making components self-documenting.

Styling is handled with hand-written CSS in a single stylesheet, so there is no utility framework or build step to learn. The AI generates responsive layouts that work across desktop, tablet, and mobile viewports, and adds dark mode with CSS variables when you ask for it. When you request specific design changes, the AI edits the stylesheet and components to match your vision. If you want ready-made primitives, npm libraries such as Radix can be added.

Routing is set up on the client for multi-page apps, with loading states and error boundaries. Protected routes are automatically created when authentication is part of your application. The AI generates route configurations that follow RESTful conventions and include proper navigation components for seamless user experiences.

Fabricate generates React 19 applications written in TypeScript. The client entry is src/client.tsx, the page shell is public/index.html, and styles live in public/styles.css. There is no build tool for you to configure: the platform bundles the app for preview and for publishing.

State management is selected based on application complexity. Simple applications use React state and Context with useReducer for predictable updates. Applications with more complex state requirements can receive a store library such as Zustand as an npm dependency. The AI creates custom hooks that encapsulate state logic, keeping components focused on rendering.

Data comes from the app's own server: plain TypeScript in src/index.ts, running inside a Durable Object, whose routes read and write the built-in SQLite database. Error boundaries are generated at the page and component level, ensuring graceful degradation when errors occur.

Component styling uses hand-written CSS with class names you can read, and CSS variables handle theming, including dark mode when you ask for it. Tailwind classes are not compiled and shadcn/ui is not included; if you want accessible primitives, npm libraries such as Radix can be added and styled from the same stylesheet.