58 lines
2.3 KiB
Markdown
58 lines
2.3 KiB
Markdown
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# PostCSS Selector Not [<img src="https://postcss.github.io/postcss/logo.svg" alt="PostCSS Logo" width="90" height="90" align="right">][postcss]
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[<img alt="npm version" src="https://img.shields.io/npm/v/postcss-selector-not.svg" height="20">][npm-url] [<img alt="CSS Standard Status" src="https://cssdb.org/images/badges/not-pseudo-class.svg" height="20">][css-url] [<img alt="Build Status" src="https://github.com/csstools/postcss-plugins/workflows/test/badge.svg" height="20">][cli-url] [<img alt="Discord" src="https://shields.io/badge/Discord-5865F2?logo=discord&logoColor=white">][discord]
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[PostCSS Selector Not] transforms :not() W3C CSS level 4 pseudo classes to :not() CSS level 3 selectors following the [Selectors 4 Specification].
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```pcss
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p:not(:first-child, .special) {
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color: red;
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}
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/* becomes */
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p:not(:first-child):not(.special) {
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color: red;
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}
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```
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⚠️ Only lists of simple selectors (`:not(.a, .b)`) will work as expected.
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Complex selectors (`:not(.a > .b, .c ~ .d)`) can not be downgraded.
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## Usage
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Add [PostCSS Selector Not] to your project:
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```bash
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npm install postcss postcss-selector-not --save-dev
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```
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Use it as a [PostCSS] plugin:
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```js
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const postcss = require('postcss');
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const postcssSelectorNot = require('postcss-selector-not');
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postcss([
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postcssSelectorNot(/* pluginOptions */)
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]).process(YOUR_CSS /*, processOptions */);
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```
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[PostCSS Selector Not] runs in all Node environments, with special
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instructions for:
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| [Node](INSTALL.md#node) | [PostCSS CLI](INSTALL.md#postcss-cli) | [Webpack](INSTALL.md#webpack) | [Create React App](INSTALL.md#create-react-app) | [Gulp](INSTALL.md#gulp) | [Grunt](INSTALL.md#grunt) |
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| --- | --- | --- | --- | --- | --- |
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[cli-url]: https://github.com/csstools/postcss-plugins/actions/workflows/test.yml?query=workflow/test
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[css-url]: https://cssdb.org/#not-pseudo-class
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[discord]: https://discord.gg/bUadyRwkJS
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[npm-url]: https://www.npmjs.com/package/postcss-selector-not
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[Gulp PostCSS]: https://github.com/postcss/gulp-postcss
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[Grunt PostCSS]: https://github.com/nDmitry/grunt-postcss
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[PostCSS]: https://github.com/postcss/postcss
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[PostCSS Loader]: https://github.com/postcss/postcss-loader
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[PostCSS Selector Not]: https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-selector-not
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[Selectors 4 Specification]: https://www.w3.org/TR/selectors-4/#negation-pseudo
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