81 lines
3.2 KiB
Markdown
81 lines
3.2 KiB
Markdown
# [postcss][postcss]-discard-duplicates [][ci] [][npm] [][deps]
|
|
|
|
> Discard duplicate rules in your CSS files with PostCSS.
|
|
|
|
## Install
|
|
|
|
With [npm](https://npmjs.org/package/postcss-discard-duplicates) do:
|
|
|
|
```
|
|
npm install postcss-discard-duplicates --save
|
|
```
|
|
|
|
## Example
|
|
|
|
This module will remove all duplicate rules from your stylesheets. It works on
|
|
at rules, normal rules and declarations. Note that this module does not have any
|
|
responsibility for normalising declarations, selectors or whitespace, so that it
|
|
considers these two rules to be different:
|
|
|
|
```css
|
|
h1, h2 {
|
|
color: blue;
|
|
}
|
|
|
|
h2, h1 {
|
|
color: blue;
|
|
}
|
|
```
|
|
|
|
It has to assume that your rules have already been transformed by another
|
|
processor, otherwise it would be responsible for too many things.
|
|
|
|
### Input
|
|
|
|
```css
|
|
h1 {
|
|
margin: 0 auto;
|
|
margin: 0 auto
|
|
}
|
|
|
|
h1 {
|
|
margin: 0 auto
|
|
}
|
|
```
|
|
|
|
### Output
|
|
|
|
```css
|
|
h1 {
|
|
margin: 0 auto
|
|
}
|
|
```
|
|
|
|
## Usage
|
|
|
|
See the [PostCSS documentation](https://github.com/postcss/postcss#usage) for
|
|
examples for your environment.
|
|
|
|
## Contributors
|
|
|
|
Thanks goes to these wonderful people ([emoji key](https://github.com/kentcdodds/all-contributors#emoji-key)):
|
|
|
|
<!-- ALL-CONTRIBUTORS-LIST:START - Do not remove or modify this section -->
|
|
| [<img src="https://avatars.githubusercontent.com/u/1282980?v=3" width="100px;"/><br /><sub>Ben Briggs</sub>](http://beneb.info)<br />[💻](https://github.com/ben-eb/postcss-discard-duplicates/commits?author=ben-eb) [📖](https://github.com/ben-eb/postcss-discard-duplicates/commits?author=ben-eb) 👀 [⚠️](https://github.com/ben-eb/postcss-discard-duplicates/commits?author=ben-eb) | [<img src="https://avatars.githubusercontent.com/u/5635476?v=3" width="100px;"/><br /><sub>Bogdan Chadkin</sub>](https://github.com/TrySound)<br />[💻](https://github.com/ben-eb/postcss-discard-duplicates/commits?author=TrySound) 👀 [⚠️](https://github.com/ben-eb/postcss-discard-duplicates/commits?author=TrySound) | [<img src="https://avatars.githubusercontent.com/u/68302?v=3" width="100px;"/><br /><sub>Lee Houghton</sub>](https://github.com/asztal)<br />[💻](https://github.com/ben-eb/postcss-discard-duplicates/commits?author=asztal) | [<img src="https://avatars.githubusercontent.com/u/1737375?v=3" width="100px;"/><br /><sub>Andy Jansson</sub>](https://github.com/andyjansson)<br />[💻](https://github.com/ben-eb/postcss-discard-duplicates/commits?author=andyjansson) [⚠️](https://github.com/ben-eb/postcss-discard-duplicates/commits?author=andyjansson) |
|
|
| :---: | :---: | :---: | :---: |
|
|
<!-- ALL-CONTRIBUTORS-LIST:END -->
|
|
|
|
This project follows the [all-contributors] specification. Contributions of
|
|
any kind welcome!
|
|
|
|
## License
|
|
|
|
MIT © [Ben Briggs](http://beneb.info)
|
|
|
|
|
|
[all-contributors]: https://github.com/kentcdodds/all-contributors
|
|
[ci]: https://travis-ci.org/ben-eb/postcss-discard-duplicates
|
|
[deps]: https://gemnasium.com/ben-eb/postcss-discard-duplicates
|
|
[npm]: http://badge.fury.io/js/postcss-discard-duplicates
|
|
[postcss]: https://github.com/postcss/postcss
|