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What is ts-graphviz? 🎯

ts-graphviz is a comprehensive TypeScript library that provides tools for creating, manipulating, and rendering Graphviz graph descriptions. It offers a type-safe, object-oriented approach to working with the DOT language, which is used by Graphviz for defining graph visualizations.

Key Features ✨

ts-graphviz offers several distinctive features that make it valuable for TypeScript/JavaScript developers working with graph visualizations:

• TypeScript-friendly API
  • Provides fully typed models for the DOT language with type definitions for graph attributes.
• Flexible Programming Paradigms
  • Supports both object-oriented and declarative approaches.
• Multi-level API
  • Offers high-level model APIs and low-level AST manipulation.
• Modular Design
  • Structured as separate packages for specific functionalities.
• Cross-platform Support
  • Works in Node.js and Deno environments
• Extensible
  • Allows extending the type system for custom graph visualization solutions.

Why ts-graphviz? 🤔

ts-graphviz is designed to make it easier for TypeScript and JavaScript developers to work with Graphviz by providing a type-safe, object-oriented API that abstracts away the complexities of the DOT language. It allows developers to create and manipulate graphs programmatically, making it suitable for both small-scale projects and large applications. It is particularly useful for applications that require dynamic graph generation, such as data visualization tools, network analysis, and more.

Getting Started 🚀

Installation 💽

Node.js

This package can then be installed using a package manager.

# npm
$ npm install -S ts-graphviz
# or yarn
$ yarn add ts-graphviz
# or pnpm
$ pnpm add ts-graphviz
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Note Want to try before installing? Check out Runkit to see how it works.

Deno 🦕

Deno v1.28 and above supports npm.

You can install and use the package by specifying the following:

import { toDot } from 'npm:ts-graphviz';
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Basic Usage 📖

ts-graphviz provides two main approaches to create graph visualizations:

Object-Oriented API

Create graphs using object-oriented programming with classes:

import { attribute as _, Digraph, Subgraph, Node, Edge, toDot } from 'ts-graphviz';

// Create a directed graph
const graph = new Digraph();

// Create nodes
const node1 = new Node('node1', { color: 'red' });
const node2 = new Node('node2', { color: 'blue' });

// Create an edge between the nodes
const edge = new Edge([node1, node2], { label: 'Edge Label' });

// Add elements to the graph
graph.addNode(node1);
graph.addNode(node2);
graph.addEdge(edge);

// Convert to DOT language
const dot = toDot(graph);

// Convert to DOT language
const dot = toDot(G);
// digraph {
//   "node1" [
//     color = "red",
//   ];
//   "node2" [
//     color = "blue",
//   ];
//   "node1" -> "node2" [
//     label = "Edge Label",
//   ];
// }
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Declarative API (Factory Function)

Create graphs using a declarative approach with a factory function:

```ts
import { attribute as _, digraph, toDot } from 'ts-graphviz';

// Create a directed graph using the factory function
const graph = digraph('G', (g) => {
  // Create nodes within the graph context
  const a = g.node('a');
  const b = g.node('b');

  // Create an edge between nodes
  g.edge([a, b], { label: 'connects to' });

  // Create a subgraph with its own nodes and edges
  g.subgraph('A', (sg) => {
    const c = sg.node('c');
    const d = sg.node('d');
    sg.edge([c, d]);
  });
});

// Convert to DOT language
const dot = toDot(graph);
// digraph G {
//   "a";
//   "b";
//   "a" -> "b" [
//     label = "connects to",
//   ];
//   subgraph "A" {
//     "c";
//     "d";
//     "c" -> "d";
//   }
// }
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Declarative API (React Component)

The @ts-graphviz/react package provides React components for creating Graphviz graphs declaratively with JSX:

import { Digraph, Node, Edge, renderToDot } from '@ts-graphviz/react';

// Define reusable components
const UserCard = ({ id, name, role }) => (
  <Node
    id={id}
    shape="record"
    label={
      <dot:table border="0" cellborder="1" cellspacing="0">
        <dot:tr>
          <dot:td bgcolor="lightblue">
            <dot:b>{name}</dot:b>
          </dot:td>
        </dot:tr>
        <dot:tr>
          <dot:td>{role}</dot:td>
        </dot:tr>
      </dot:table>
    }
  />
);

const StatusBadge = ({ status }) => (
  <dot:font color={status === 'active' ? 'green' : 'red'}>
    <dot:b>{status.toUpperCase()}</dot:b>
  </dot:font>
);

// Compose the graph
const TeamStructure = () => (
  <Digraph rankdir="TB">
    <UserCard id="alice" name="Alice Smith" role="Team Lead" />
    <UserCard id="bob" name="Bob Johnson" role="Developer" />
    <UserCard id="carol" name="Carol Davis" role="Designer" />

    <Node
      id="project"
      label={
        <>
          <dot:b>Project Alpha</dot:b><dot:br/>
          Status: <StatusBadge status="active" />
        </>
      }
      shape="box"
      style="rounded,filled"
      fillcolor="lightyellow"
    />

    <Edge targets={["alice", "bob"]} label="manages" />
    <Edge targets={["alice", "carol"]} label="manages" />
    <Edge targets={["project", "alice"]} label="assigned to" style="dashed" />
  </Digraph>
);

// Render to DOT
const dot = await renderToDot(<TeamStructure />);
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Useful Links 🔗

Documentation 📖

More detailed documentation and examples can be found in the following resources:

• API Reference
  • See the API Reference for detailed documentation on how to use the library.
• DeepWiki
  • See the AI generated documentation for more information.
  • And ask questions about the library.
• Website
  • The official website for ts-graphviz.

Architecture 🏛

See ARCHITECTURE.md for more details.

Security 🛡️

See SECURITY.md for more details.

Package Structure 📦

The ts-graphviz repository is structured as a monorepo containing several packages, each with a specific responsibility:

Package	Purpose
ts-graphviz	Main entry point providing a high-level API for most users
@ts-graphviz/core	Core object models for graph manipulation
@ts-graphviz/ast	Parser and AST (Abstract Syntax Tree) handling for DOT language
@ts-graphviz/adapter	Platform-specific implementations for rendering graphs
@ts-graphviz/common	Shared types and utilities used across packages
@ts-graphviz/react	React components for creating and rendering Graphviz graphs

Data Flow and Processing Pipeline 🔄

The following diagram illustrates how data flows through the ts-graphviz system, from graph creation to final rendering:

1. Creation Phase: Users create graph models through object-oriented API, React components, or parsing DOT strings
2. Processing Phase: Models are converted to AST and then to DOT language strings
3. Rendering Phase: Platform-specific adapters convert DOT strings to visual output formats
   1. The adapters handle platform-specific operations, such as executing the Graphviz dot command in Node.js/Deno, while maintaining a consistent API across environments.

Key Data Transformations:

• Model -> AST: Converts object model to abstract syntax tree
• AST -> DOT: Generates DOT language string from AST
• DOT -> AST: Parses DOT language into AST
• AST -> Model: Converts AST back to object model
• DOT -> Output: Uses adapters to render visual outputs

The toDot() function from the ts-graphviz package is a composite of fromModel() and stringify(), while the fromDot() function is a composite of parse() and toModel().

Who's using ts-graphviz 📜

• Apollo GraphQL
• Apple
• AWS
• IBM (StrongLoop)
• The University of Tokyo
• Transmute

Related Projects 💫

Related projects can be found at ts-graphviz GitHub Organization.

The TypeScript/JavaScript ecosystem provides a variety of OSS with the goal of making Graphviz more connected and easier to use.

Contributors 👥

Thanks goes to these wonderful people (emoji key):

Yuki Yamazaki 💻 ⚠️ 📖 🤔	LaySent 🐛 ⚠️	elasticdotventures 📖	Christian Murphy 💻 🤔 📖	Artem 🐛	fredericohpandolfo 🐛	diegoquinteiro 🐛
robross0606 🤔	Blake Regalia 🐛	bigbug 💬	mrwk 💬	svdvonde 💬	Adam 💬	Trevor Scheer ️️️️♿️
Prem Pillai 🐛	nagasawaryoya 💻 ⚠️	YukiSasaki 💻 ⚠️	Madd0g 🐛	j4k0xb 🐛	HKrogstie 🐛	Nils K 🐛
hao2013 🚧 👀	Walter Rafelsberger 💬	grsjst 🐛	Steve 🐛

This project follows the all-contributors specification. Contributions of any kind welcome!

How to Contribute 💪

The easiest way to contribute is to use the library and star repository.

Questions 💭

Feel free to ask questions on GitHub Discussions.

Report bugs / request additional features 💡

Please register at GitHub Issues.

Development / Bug Fixes 🧑‍💻

See CONTRIBUTING.md.

Financial Support 💸

Support this project by becoming a sponsor. Your logo will show up here with a link to your website. Become a sponsor

Thank you to all our backers! 🙏 Become a backer

Please support ts-graphviz on Open Collective or GitHub Sponsors.

Note Even just a dollar is enough motivation to develop 😊

ts-graphviz for Enterprise 🏢

Available as part of the Tidelift Subscription.

The maintainers of ts-graphviz and thousands of other packages are working with Tidelift to deliver commercial support and maintenance for the open-source dependencies you use to build your applications. Save time, reduce risk, and improve code health, while paying the maintainers of the exact dependencies you use.

Learn more.

License ⚖️

This software is released under the MIT License, see LICENSE.