Files
ComfyUI_frontend/src/lib/litegraph
AustinMroz e28c1e7e43 Show multitype slices of shared color (#11250)
A tiny update requested by the backend team.

Previously, multitype slot indicators would have inputs that resolve to
the same connection color display be combined into a single slice. For
example, both `INT` and `FLOAT` have the same color, so an `INT,FLOAT`
slot displays as a solid color instead of 2 semi-circles. This was a
conscientious decision to improve readability on slots that allow many
types, but meant that the more common cases (like `INT,FLOAT`) would
have no indicator at all. Since priority is given to types based on
order of listing, node authors can still control which types are elided
on a slot accepting many types.

<img width="430" height="320" alt="image"
src="https://github.com/user-attachments/assets/1fc7fb1c-a634-487c-bc03-711637aeef13"
/>

- I do not believe there are any core nodes affected by this change.
- The vue implementation of merging slot colors never functioned
properly, but is still removed.
- Vue was bugged to incorrectly pass slot types for widgets. This is
also fixed.

┆Issue is synchronized with this [Notion
page](https://www.notion.so/PR-11250-Show-multitype-slices-of-shared-color-3436d73d365081b6b484ea74423435a1)
by [Unito](https://www.unito.io)
2026-04-17 22:19:59 +00:00
..
2026-01-27 17:59:19 -08:00

@ComfyOrg/litegraph

This is the litegraph version used in ComfyUI_frontend.

It is a fork of the original litegraph.js. Some APIs may by unchanged, however it is largely incompatible with the original.

Some early highlights:

Usage

This library is included as a git subtree in the ComfyUI frontend project at src/lib/litegraph.

litegraph.js

A TypeScript library to create graphs in the browser similar to Unreal Blueprints.

Description of the original litegraph.js

A library in Javascript to create graphs in the browser similar to Unreal Blueprints. Nodes can be programmed easily and it includes an editor to construct and tests the graphs.

It can be integrated easily in any existing web applications and graphs can be run without the need of the editor.

Node Graph

Features

  • Renders on Canvas2D (zoom in/out and panning, easy to render complex interfaces, can be used inside a WebGLTexture)
  • Easy to use editor (searchbox, keyboard shortcuts, multiple selection, context menu, ...)
  • Optimized to support hundreds of nodes per graph (on editor but also on execution)
  • Customizable theme (colors, shapes, background)
  • Callbacks to personalize every action/drawing/event of nodes
  • Graphs can be executed in NodeJS
  • Highly customizable nodes (color, shape, widgets, custom rendering)
  • Easy to integrate in any JS application (one single file, no dependencies)
  • Typescript support

Integration

This library is integrated as a git subtree in the ComfyUI frontend project. To use it in your code:

import { LGraph, LGraphNode, LiteGraph } from '@/lib/litegraph'

How to code a new Node type

Here is an example of how to build a node that sums two inputs:

import { LiteGraph, LGraphNode } from './litegraph'

class MyAddNode extends LGraphNode {
  // Name to show
  title = 'Sum'

  constructor() {
    this.addInput('A', 'number')
    this.addInput('B', 'number')
    this.addOutput('A+B', 'number')
    this.properties.precision = 1
  }

  // Function to call when the node is executed
  onExecute() {
    var A = this.getInputData(0)
    if (A === undefined) A = 0
    var B = this.getInputData(1)
    if (B === undefined) B = 0
    this.setOutputData(0, A + B)
  }
}

// Register the node type
LiteGraph.registerNodeType('basic/sum', MyAddNode)

Server side

It also works server-side using NodeJS although some nodes do not work in server (audio, graphics, input, etc).

import { LiteGraph, LGraph } from './litegraph.js'

const graph = new LGraph()

const firstNode = LiteGraph.createNode('basic/sum')
graph.add(firstNode)

const secondNode = LiteGraph.createNode('basic/sum')
graph.add(secondNode)

firstNode.connect(0, secondNode, 1)

graph.start()

Projects using it

ComfyUI

ComfyUI default workflow

Projects using the original litegraph.js

Click to expand

webglstudio.org

WebGLStudio

MOI Elephant

MOI Elephant

Mynodes

MyNodes

Feedback

Please open an issue on the GitHub repo.

Development

Litegraph has no runtime dependencies. The build tooling has been tested on Node.JS 20.18.x

Releasing

This library is embedded via git subtree in ComfyUI_frontend. Releases are managed through the parent repository's release process.

Contributors

You can find the current list of contributors on GitHub.

Contributors (pre-fork)

  • atlasan
  • kriffe
  • rappestad
  • InventivetalentDev
  • NateScarlet
  • coderofsalvation
  • ilyabesk
  • gausszhou