CHANGELOG.md

@xyflow/react

12.0.0-next.18

• don't show nodeTypes warning if not necessary you've created a new nodeTypes or edgeTypes
• add node resizer styles to base.css
• remove HandleComponentProps type, only export HandleProps type
• add warning when styles not loaded

12.0.0-next.17

• fix broken defaultNodes
• add string array to UpdateNodeInternals thanks @DenizUgur
• pinch zoom on windows
• drag for touch devices
• return user node in node event handlers
• cleanup useReactFlow
• export KeyCode and Align type
• remove Instance in favour of ReactFlowInstance type

12.0.0-next.16

Patch changes

• fix batching for setNodes, updateNode, updateNodeData etc.
• fix useNodesInitialized

12.0.0-next.15

Patch changes

• re-observe nodes when using onlyRenderVisibleElements={true}
• use correct positions for intersection helpers
• fix minimap interaction for touch devices
• pass user nodes to onSelectionChange instead of internal ones to work with Redux
• call onEnd in XYResizer thanks @tonyf
• cleanup getPositionWithOrigin usage
• use setAttributes flag for dimension change when width/height should be set
• use replace: false as the default for updateNode function

12.0.0-next.14

Patch changes

• fix hidden nodes
• use direction=ltr for outer wrapper to support rtl sites
• allow pinch zoom even if preventScrolling=false
• export node and edge change related types
• only trigger dimensions updates when changes detected

12.0.0-next.13

⚠️ Breaking changes

• rename node.parentNode to node.parentId
• rename node.computed to node.measured
• remove positionAbsolute from node.computed

Minor Changes

• new helpers: useInternalNode hook, getInternalNode function

Patch changes

• remove internalsSymbol (now called internals and only available for internal nodes)
• handle parentExpand on library side instead of applyChanges
• new type InternalNode

12.0.0-next.12

Patch changes

• fix useNodesData: handle invalid node id thanks @saswatax
• fix forwardRef: use custom fixForwardRef function
• refactor intersection helpers to use passed node value

12.0.0-next.11

Patch changes

• fix ref prop for ReactFlow and Handle component
• unify Edge and Node type handling
• fix safari: prevent selection of viewport
• fix useNodesData hook to prevent re-renderings
• fix edges: allow start at 0,0

12.0.0-next.10

⚠️ Breaking changes

• useNodesData not only returns data objects but also the type and the id of the node
• status class names for Handle components are slightly different. It's now "connectingfrom" and "connectingto" instead of "connecting"

Patch changes

• better cursor defaults for the pane, nodes and edges
• disableKeyboardA11y now also disables Enter and Escape for selecting/deselecting nodes and edges
• fix bug where users couldn't drag a node after toggle nodes hidden attribute
• add initialWidth and initialHeight node attributes for specifying initial dimensions for ssr
• fix NodeResizer when used in combination with nodeOrigin

12.0.0-next.9

Patch changes

• a better NodeResizer that works with subflows. Child nodes do not move when parent node gets resized and parent extent is taken into account
• refactor setNodes batching
• re-measure nodes when necessary
• don't trigger drag start / end when node is not draggable

12.0.0-next.8

Patch changes

• selection box is not interrupted by selectionKey being let go
• fix OnNodeDrag type
• do not use fallback handle if a specific id is being used
• fix defaultEdgeOptions markers not being applied
• fix getNodesBounds and add second param for passing options
• fix expandParent for child nodes

12.0.0-next.7

Minor changes

• add second option param to screenToFlowPosition for configuring if snapToGrid should be used

Patch changes

• pass Node/ Edge types to changes thanks @FelipeEmos
• use position instead of positionAbsolute for getNodesBounds
• infer types for getIncomers, getOutgoers, updateEdge, addEdge and getConnectedEdges thanks @joeyballentine
• refactor handles: prefix with flow id for handling nested flows
• add comments for types like ReactFlowProps or Node for a better developer experience

12.0.0-next.6

Patch changes

• fix deleteElements
• refactor internal applyChanges
• batch setNodes and setEdges from useReactFlow
• add aria-label prop for <Controls />

12.0.0-next.5

Minor changes

• fix applyChanges: handle multi changes for one node, deletions and expandParent
• use XYResizer from @xyflow/system
• add unit tests for applyNodeChanges and applyEdgeChanges

12.0.0-next.4

Minor changes

• fix applyChanges: handle empty flows + addNodes/addEdges closes
• cleanup exports

12.0.0-next.3

Minor changes

• fix edges styles when using base.css

12.0.0-next.2

Minor changes

• fix connection line rendering
• fix multi handle

12.0.0-next.1

Minor changes

• fix edge rendering

12.0.0-next.0

React Flow v12 is coming soon! We worked hard over the past months and tried to make as few breaking changes as possible (there are some). We are in no rush to release v12, so we’d be happy to hear any early feedback so we can adjust the API or redefine new features before launching stable v12. 🚀 The big topics for this version are:

1. Support for SSG/ SSR: you can now render flows on the server
2. Reactive flows: new hooks and helper functions to simplify data flows
3. Dark mode: a new base style and easy way to switch between built in color modes

Svelte Flow had a big impact on this release as well. While combing through each line of React Flow, we created framework agnostic helpers, found bugs, and made some under the hood improvements. All of these changes are baked into the v12 release as a welcome side-effect of that launch. 🙌🏻 We also improved the performance for larger flows with the help of Ivan.

Migrate from 11 to 12

Before you can try out the new features, you need to do some minor updates:

• A new npm package name: Our name changed from reactflow to @xyflow/react and the main component is no longer a default, but a named import:
  • v11: import ReactFlow from 'reactflow';
  • v12: import { ReactFlow } from '@xyflow/react';
• Node attribute “computed”: All computed node values are now stored in node.computed
  • v11: node.width, node.height ,node.positionAbsolute
  • v12: node.computed.width, node.computed.height and node.computed.positionAbsolute . (node.width/ node.height can now be used for SSG)
• Updating nodes: We are not supporting node updates with object mutations anymore. If you want to update a certain attribute, you need to create a new node.
  • v11:

    setNodes((nds) =>
      nds.map((node) => {
        node.hidden = true;
        return node;
      })
    );

  • v12:

    setNodes((nds) =>
      nds.map((node) => ({
        ...node,
        hidden: true,
      }))
    );

• NodeProps: posX/posY is now called positionAbsoluteX/positionAbsoluteY
• Typescript only: We simplified types and fixed issues about functions where users could pass a NodeData generic. The new way is to define your own node type for the whole app and then only use that one. The big advantage of this is, that you can have multiple node types with different data structures and always be able to distinguish by checking the node.type attribute.
  • v11: applyNodeChange<NodeData, NodeType>
  • v12: type MyNodeType = Node<{ value: number }, ‘number’> | Node<{ value: string }, ‘text’>; applyNodeChange<MyNodeType>
  • affected functions: useNodes, useNodesState, useEdgesState, applyNodeChange, onInit, applyEdgeChanges , MiniMapProps
• Removal of deprecated functions:
  • getTransformForBounds (new name: getViewportForBounds),
  • getRectOfNodes (new name: getNodesBounds)
  • project (new name: screenToFlowPosition)
  • getMarkerEndId

Main features

Now that you successfully migrated to v12, you can use all the fancy features. As mentioned above, the biggest updates for v12 are:

• SSR / SSG: you can define width, height and handles for the nodes. This makes it possible to render a flow on the server and hydrate on the client: codesandbox
  • Details: In v11, width and height were set by the library as soon as the nodes got measured. This still happens, but we are now using computed.width and computed.height to store this information. The positionAbsolute attribute also gets stored in computed . In the previous versions there was always a lot of confusion about width and height. It’s hard to understand, that you can’t use it for passing an actual width or height. It’s also not obvious that those attributes get added by the library. We think that the new implementation solves both of the problems: width and height are optional attributes that can be used to define dimensions and everything that is set by the library, is stored in computed.
• Reactive Flows: The new hooks useHandleConnections and useNodesData and the new updateNode and updateNodeData functions can be used for managing the data flow between your nodes: codesandbox
  • Details: Working with reactive flows is super common. You update node A and want to react on those changes in the connected node B. Until now everyone had to come up with a custom solution. With this version we want to change this and give you performant helpers to handle this. If you are excited about this, you can check out this example:
• Dark mode and css variables: React Flow now comes with a built-in dark mode, that can be toggled by using the new colorMode prop (”light”, “dark” or “system”): codesandbox
  • Details: With this version we want to make it easier to switch between dark and light modes and give you a better starting point for dark flows. If you pass colorMode=”dark”, we add the class name “dark” to the wrapper and use it to adjust the styling. To make the implementation for this new feature easier on our ends, we switched to CSS variables for most of the styles. These variables can also be used in user land to customize a flow.

More features and updates

There is more! Besides the new main features, we added some minor things that were on our list for a long time. We also started to use TS docs for better docs. We already started to add some docs for some types and hooks which should improve the developer experience.

• useConnection hook: This hook makes it possible to handle an ongoing connection. For example, you can use it for colorizing handles.
• onDelete handler: We added a combined handler for onDeleteNodes and onDeleteEdges to make it easier to react to deletions.
• isValidConnection prop: This makes it possible to implement one validation function for all connections. It also gets called for programatically added edges.
• Controlled viewport: This is definitely an advanced feature. Possible use cases are to animate the viewport or round the transform for lower res screens for example. This features brings two new props: viewport and onViewportChange.
• ViewportPortal component: This makes it possible to render elements in the viewport without the need to implement a custom node.
• Background component: add patternClassName to be able to style the background pattern by using a class name. This is useful if you want to style the background pattern with Tailwind for example.
• onMove callback gets triggered for library-invoked viewport updates (like fitView or zoom-in)
• deleteElements now returns deleted nodes and deleted edges
• add origin attribute for nodes
• add selectable attribute for edges
• Correct types for BezierEdge, StepEdge, SmoothStepEdge and StraightEdge components
• New edges created by the library only have sourceHandle and targetHandle attributes when those attributes are set. (We used to pass sourceHandle: null and targetHandle: null)
• Edges do not mount/unmount when their z-index change

Internal changes

These changes are not really user-facing, but it could be important for folks who are working with the React Flow store:

• The biggest internal change is that we created a new package @xyflow/system with framework agnostic helpers that can be used be React Flow and Svelte Flow
  • XYDrag for handling dragging node(s) and selection
  • XYPanZoom for controlling the viewport panning and zooming
  • XYHandle for managing new connections
• We replaced the nodeInternals map with a nodes array. We added a new nodeLookup map that serves as a lookup, but we are not creating a new map object on any change so it’s really only useful as a lookup.
• We removed connectionNodeId, connectionHandleId, connectionHandleType from the store and added connectionStartHandle.nodeId, connectionStartHandle.handleId, …
• add data-id to edges

With v12 the reactflow package was renamed to @xyflow/react - you can find the v11 source and the reactflow changelog on the v11 branch.