| 1 | # 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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| 2 |
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| 3 | [<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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| 4 |
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| 5 | [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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| 6 |
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| 7 | ```pcss
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| 8 | p:not(:first-child, .special) {
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| 9 | color: red;
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| 10 | }
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| 11 |
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| 12 | /* becomes */
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| 13 |
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| 14 | p:not(:first-child):not(.special) {
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| 15 | color: red;
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| 16 | }
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| 17 | ```
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| 18 |
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| 19 | ⚠️ Only lists of simple selectors (`:not(.a, .b)`) will work as expected.
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| 20 | Complex selectors (`:not(.a > .b, .c ~ .d)`) can not be downgraded.
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| 21 |
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| 22 | ## Usage
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| 23 |
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| 24 | Add [PostCSS Selector Not] to your project:
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| 25 |
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| 26 | ```bash
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| 27 | npm install postcss postcss-selector-not --save-dev
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| 28 | ```
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| 29 |
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| 30 | Use it as a [PostCSS] plugin:
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| 31 |
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| 32 | ```js
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| 33 | const postcss = require('postcss');
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| 34 | const postcssSelectorNot = require('postcss-selector-not');
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| 35 |
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| 36 | postcss([
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| 37 | postcssSelectorNot(/* pluginOptions */)
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| 38 | ]).process(YOUR_CSS /*, processOptions */);
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| 39 | ```
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| 40 |
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| 41 | [PostCSS Selector Not] runs in all Node environments, with special
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| 42 | instructions for:
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| 43 |
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| 44 | | [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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| 45 | | --- | --- | --- | --- | --- | --- |
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| 46 |
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| 47 | [cli-url]: https://github.com/csstools/postcss-plugins/actions/workflows/test.yml?query=workflow/test
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| 48 | [css-url]: https://cssdb.org/#not-pseudo-class
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| 49 | [discord]: https://discord.gg/bUadyRwkJS
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| 50 | [npm-url]: https://www.npmjs.com/package/postcss-selector-not
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| 51 |
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| 52 | [Gulp PostCSS]: https://github.com/postcss/gulp-postcss
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| 53 | [Grunt PostCSS]: https://github.com/nDmitry/grunt-postcss
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| 54 | [PostCSS]: https://github.com/postcss/postcss
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| 55 | [PostCSS Loader]: https://github.com/postcss/postcss-loader
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| 56 | [PostCSS Selector Not]: https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-selector-not
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| 57 | [Selectors 4 Specification]: https://www.w3.org/TR/selectors-4/#negation-pseudo
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