Powerful open source libraries for building node-based UIs with React, Svelte, or Flutter. Ready out-of-the-box and infinitely customizable.

React Flow · Svelte Flow · Flutter · React Flow Pro · Discord

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The xyflow mono repo

The xyflow repository is the home of five packages:

• React Flow 12 @xyflow/react packages/react
• React Flow 11 reactflow v11 branch
• Svelte Flow @xyflow/svelte packages/svelte
• Flutter xyflow_flutter packages/xyflow_flutter
• Shared helper library @xyflow/system packages/system

Commercial usage

Are you using React Flow or Svelte Flow for a personal project? Great! No sponsorship needed, you can support us by reporting any bugs you find, sending us screenshots of your projects, and starring us on Github 🌟

Are you using React Flow or Svelte Flow at your organization and making money from it? Awesome! We rely on your support to keep our libraries developed and maintained under an MIT License, just how we like it. For React Flow you can do that on the React Flow Pro website and for both of our libraries you can do it through Github Sponsors.

Getting started

The best way to get started is to check out the React Flow or Svelte Flow learn section, or the Flutter package. However if you want to get a sneak peek of how to install and use the libraries you can see it here:

React Flow basic usage

Installation

npm install @xyflow/react

Basic usage

import { useCallback } from 'react';
import {
ReactFlow,
MiniMap,
Controls,
Background,
useNodesState,
useEdgesState,
addEdge,
} from '@xyflow/react';

import '@xyflow/react/dist/style.css';

const initialNodes = [
{ id: '1', position: { x: 0, y: 0 }, data: { label: '1' } },
{ id: '2', position: { x: 0, y: 100 }, data: { label: '2' } },
];

const initialEdges = [{ id: 'e1-2', source: '1', target: '2' }];

function Flow() {
const [nodes, setNodes, onNodesChange] = useNodesState(initialNodes);
const [edges, setEdges, onEdgesChange] = useEdgesState(initialEdges);

const onConnect = useCallback((params) => setEdges((eds) => addEdge(params, eds)), [setEdges]);

return (
  <ReactFlow
    nodes={nodes}
    edges={edges}
    onNodesChange={onNodesChange}
    onEdgesChange={onEdgesChange}
    onConnect={onConnect}
  >
    <MiniMap />
    <Controls />
    <Background />
  </ReactFlow>
);
}

export default Flow;

Svelte Flow basic usage

Installation

npm install @xyflow/svelte

Basic usage

<script lang="ts">
import { writable } from 'svelte/store';
import {
  SvelteFlow,
  Controls,
  Background,
  BackgroundVariant,
  MiniMap,
} from '@xyflow/svelte';

import '@xyflow/svelte/dist/style.css'

const nodes = writable([
  {
    id: '1',
    type: 'input',
    data: { label: 'Input Node' },
    position: { x: 0, y: 0 }
  },
  {
    id: '2',
    type: 'custom',
    data: { label: 'Node' },
    position: { x: 0, y: 150 }
  }
]);

const edges = writable([
  {
    id: '1-2',
    type: 'default',
    source: '1',
    target: '2',
    label: 'Edge Text'
  }
]);
</script>

<SvelteFlow
{nodes}
{edges}
fitView
on:nodeclick={(event) => console.log('on node click', event)}
>
<Controls />
<Background variant={BackgroundVariant.Dots} />
<MiniMap />
</SvelteFlow>

Flutter basic usage

Installation

Add the path dependency from this repo:

dependencies:
xyflow_flutter:
  path: packages/xyflow_flutter

Basic usage

import 'package:flutter/material.dart';
import 'package:xyflow_flutter/xyflow_flutter.dart';

class FlowPage extends StatefulWidget {
const FlowPage({super.key});

@override
State<FlowPage> createState() => _FlowPageState();
}

class _FlowPageState extends State<FlowPage> {
var nodes = [
  Node(id: '1', position: XYPosition(x: 0, y: 0), data: {'label': '1'}),
  Node(id: '2', position: XYPosition(x: 0, y: 100), data: {'label': '2'}),
];
var edges = [Edge(id: 'e1-2', source: '1', target: '2')];

@override
Widget build(BuildContext context) {
  return XYFlow(
    nodes: nodes,
    edges: edges,
    onNodesChange: (changes) => setState(() {
      nodes = applyNodeChanges(changes, nodes);
    }),
    onEdgesChange: (changes) => setState(() {
      edges = applyEdgeChanges(changes, edges);
    }),
    children: const [
      Background(),
      Controls(),
      MiniMap(),
    ],
  );
}
}

Flutter screenshots

Examples from packages/xyflow_flutter/example:

Basic Flow	Story Flow
Robot Grid	ComfyUI Flow
Custom Nodes	Edge Types

Releases

For releasing packages we are using changesets in combination with the changeset Github action. The rough idea is:

1. create PRs for new features, updates and fixes (with a changeset if relevant for changelog)
2. merge into main
3. changeset creates a PR that bumps all packages based on the changesets
4. merge changeset PR if you want to release to Github and npm

Built by xyflow

React Flow and Svelte Flow are maintained by the xyflow team. If you need help or want to talk to us about a collaboration, reach out through our contact form or by joining our Discord Server.

License

React Flow and Svelte Flow are MIT licensed.