Node-Based UIs in React - React Flow
Highly customizable React library for workflow builders, no-code apps, image processing, visualizers, and more
What it is
React Flow is a customizable open-source React component library designed for building node-based editors, interactive diagrams, and flow-based applications. It is intended for developers creating applications such as workflow editors, data processing tools, chatbot builders, machine learning interfaces, and musical synthesizers.
Main Features
Core Functionality
- Drag-and-drop nodes
- Zooming and panning of the canvas
- Selecting multiple nodes and edges
- Adding and removing nodes and edges
- Keyboard navigation for accessibility
Built-In Components
- Background component for visual guidance
- MiniMap for an overview of the flow
- Controls for zoom and fit-view actions
- NodeToolbar for contextual node actions
- NodeResizer for resizing nodes
Customization
- Fully customizable nodes as React components
- Customizable edges and edge labels
- Support for theming and utility classes
- Compatibility with Tailwind CSS and plain CSS
Advanced Capabilities
- Layouting algorithms (Dagre, Elkjs, etc.)
- Sub-flows and grouping of nodes
- Whiteboard features (freehand drawing, lasso selection)
- Server-side rendering (SSR) and image creation
- State management and performance optimization
How it works
Building a Simple Flow
Developers install the library and use the <ReactFlow /> component, providing an array of initial nodes and edges. The library handles rendering, user interactions, and viewport management out-of-the-box.
Creating Custom Node Editors
Users define their own node types as React components, which can contain any interactive elements, forms, or displays. These custom nodes are then passed to the React Flow instance and become fully interactive within the flow canvas.
Implementing Complex Applications
Advanced users utilize hooks like useReactFlow() and useStore() to manage complex state, implement custom layouting algorithms, add validation rules for connections, and create interactive features like undo/redo or collaborative editing.
Key Points
- React Flow is MIT-licensed open source software, with a commercial Pro option to support development.
- It is highly customizable, with nodes being standard React components.
- The library includes built-in accessibility features and keyboard navigation.
- It is widely used by companies including Stripe, Typeform, and Zapier for production applications.
- It supports TypeScript and includes extensive API references and utility functions.
Additional Details
- Installation: Available via npm, yarn, or pnpm:
npm install @xyflow/react - Requirements: A React project with npm, pnpm, or yarn installed.
- License: MIT license for the open-source version.
- Availability: The library is actively maintained, with regular updates and a public changelog.
- Support: Community support is available via Discord and GitHub. Commercial support is available through React Flow Pro.
- Related Projects: Maintained by the xyflow team, which also develops Svelte Flow for Svelte applications.
