https://github.com/timdp/swirly

A marble diagram generator.
https://github.com/timdp/swirly

documentation javascript marble-diagrams nodejs observable reactive-programming rxjs svg typescript

Last synced: 7 days ago
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A marble diagram generator.

• Host: GitHub
• URL: https://github.com/timdp/swirly
• Owner: timdp
• License: mit
• Created: 2019-09-09T16:40:44.000Z (over 5 years ago)
• Default Branch: main
• Last Pushed: 2023-02-21T15:25:38.000Z (almost 2 years ago)
• Last Synced: 2024-12-17T20:06:04.939Z (14 days ago)
• Topics: documentation, javascript, marble-diagrams, nodejs, observable, reactive-programming, rxjs, svg, typescript
• Language: TypeScript
• Homepage: https://swirly.dev
• Size: 5.41 MB
• Stars: 118
• Watchers: 3
• Forks: 3
• Open Issues: 8
• Metadata Files:
  • Readme: README.md
  • Funding: .github/FUNDING.yml
  • License: LICENSE

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README

        


  





  A marble diagram generator.





  

  



## Example

Here's Swirly rendering the effect of the `concatAll` operator:

![concatAll](examples/concatAll.png)

The image above was built from

[this marble diagram specification](examples/concatAll.txt).

Diagram specifications use an extension of the syntax used for

[RxJS marble testing](https://github.com/ReactiveX/rxjs/blob/fc3d4264395d88887cae1df2de1b931964f3e684/docs_app/content/guide/testing/marble-testing.md).

Please consult the [examples](examples.md) to learn how to create diagrams.

## Web Version

You can use Swirly in your browser at

[**swirly.dev**](https://swirly.dev/).

The Web version allows you to edit diagram specifications in real time and

export them to an SVG or a PNG image.

## CLI Version

Swirly is also available as a command-line utility. To run it, you need a

sufficiently recent version of [Node.js](https://nodejs.org/).

To install Swirly on your machine, just install the `swirly` npm package:

```bash

npm install -g swirly

```

Next, create `diagram.txt` with your diagram specification. Take a look at the

[examples](examples/) to learn about the expected syntax.

You can then generate an SVG image from the specification by simply running:

```bash

swirly diagram.txt diagram.svg

```

Swirly can also output PNG images. Since PNG is a raster image format, you may

want to increase the resolution to get a higher-quality result. You can do so by

passing `--scale` followed by a percentage. For example, this will render the

image at twice its original size:

```bash

swirly --scale=200 diagram.txt diagram.png

```

## Author

[Tim De Pauw](https://tmdpw.eu)

## License

MIT