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# [postcss][postcss]-merge-idents [][ci] [][npm] [][deps]
> Merge keyframe and counter style identifiers.
## Install
With [npm](https://npmjs.org/package/postcss-merge-idents) do:
```
npm install postcss-merge-idents --save
```
## Example
This module will merge identifiers such as `@keyframes` and `@counter-style`,
if their properties are identical. Then, it will update those declarations that
depend on the duplicated property.
### Input
```css
@keyframes rotate {
from { transform: rotate(0) }
to { transform: rotate(360deg) }
}
@keyframes flip {
from { transform: rotate(0) }
to { transform: rotate(360deg) }
}
.rotate {
animation-name: rotate
}
.flip {
animation-name: flip
}
```
### Output
```css
@keyframes flip {
from { transform: rotate(0) }
to { transform: rotate(360deg) }
}
.rotate {
animation-name: flip
}
.flip {
animation-name: flip
}
```
## Usage
See the [PostCSS documentation](https://github.com/postcss/postcss#usage) for
examples for your environment.
## Contributing
Pull requests are welcome. If you add functionality, then please add unit tests
to cover it.
## License
MIT © [Ben Briggs](http://beneb.info)
[ci]: https://travis-ci.org/ben-eb/postcss-merge-idents
[deps]: https://gemnasium.com/ben-eb/postcss-merge-idents
[npm]: http://badge.fury.io/js/postcss-merge-idents
[postcss]: https://github.com/postcss/postcss
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