https://github.com/tiaanduplessis/css-dedoupe

🙌 Remove duplicate properties and declarations from your CSS
https://github.com/tiaanduplessis/css-dedoupe

css dedoupe deduplication prune

Last synced: 2 months ago
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🙌 Remove duplicate properties and declarations from your CSS

• Host: GitHub
• URL: https://github.com/tiaanduplessis/css-dedoupe
• Owner: tiaanduplessis
• License: mit
• Created: 2017-05-12T14:53:29.000Z (over 8 years ago)
• Default Branch: master
• Last Pushed: 2020-06-12T23:27:33.000Z (over 5 years ago)
• Last Synced: 2025-07-01T11:52:05.023Z (3 months ago)
• Topics: css, dedoupe, deduplication, prune
• Language: JavaScript
• Size: 223 KB
• Stars: 1
• Watchers: 1
• Forks: 0
• Open Issues: 6
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          


	



css-dedoupe



  Remove duplicate properties and declarations from your CSS








  

    

  

  

  

  

  

    

  

  

    

  

  

    

  

  

    

  

  

    

  

  

    

  

  

    

  

  

    

  








  

    

  

  

    

  

  

    

  








  Built with ❤︎ by Tiaan and contributors



Table of Contents


  Table of Contents

  
About

  
Install

  
Usage

  
CLI

  
Issues

  
Contribute

  
License


## About

[![Greenkeeper badge](https://badges.greenkeeper.io/tiaanduplessis/css-dedoupe.svg)](https://greenkeeper.io/)

This is a basic module that walks a AST built with [reworkcss](github.com/reworkcss/css) and removes duplicate CSS properties associated with a specific selector. Only keeping the most recent.

## Install

```sh

$ npm install --save css-dedoupe

# OR

$ yarn add css-dedoupe

```

## Usage

```js

const cssDedoupe = require('css-dedoupe')

const cssStr = '.float-right {float: right;}.float-right {float: right;}'

console.log(cssDedoupe(cssStr)) // '.float-right{float:right}'

```

## CLI

```sh

$ css-dedoupe input.css output.css

```

Or if you would like to modify the input file directly:

```sh

$ css-dedoupe inputAndOutput.css

```

## Issues

- Currently only supports top level declartions e.g. does not dedoupe declartions in media queries.

- The module makes no attempt to format the css after dedouping. Use modules like [csscomb](https://github.com/csscomb/csscomb.js) for this.

## Contribute

Contributions are welcome. Please open up an issue or create PR if you would like to help out.

Note: If editing the README, please conform to the [standard-readme](https://github.com/RichardLitt/standard-readme) specification.

## License

Licensed under the MIT License.

Icons made by Madebyoliver from www.flaticon.com is licensed by CC 3.0 BY