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89 lines
2.6 KiB
89 lines
2.6 KiB
2 years ago
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# PostCSS HWB Function [<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/@csstools/postcss-hwb-function.svg" height="20">][npm-url]
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[<img alt="CSS Standard Status" src="https://cssdb.org/images/badges/hwb-function.svg" height="20">][css-url]
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[<img alt="Build Status" src="https://github.com/csstools/postcss-plugins/workflows/test/badge.svg" height="20">][cli-url]
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[<img alt="Discord" src="https://shields.io/badge/Discord-5865F2?logo=discord&logoColor=white">][discord]
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[PostCSS HWB Function] lets you use `hwb` color functions in
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CSS, following the [CSS Color] specification.
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```pcss
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a {
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color: hwb(194 0% 0%);
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color: hwb(194 0% 0% / .5);
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}
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/* becomes */
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a {
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color: rgb(0, 195, 255);
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color: rgba(0, 195, 255, .5);
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}
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```
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## Usage
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Add [PostCSS HWB Function] to your project:
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```bash
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npm install postcss @csstools/postcss-hwb-function --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 postcssHWBFunction = require('@csstools/postcss-hwb-function');
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postcss([
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postcssHWBFunction(/* pluginOptions */)
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]).process(YOUR_CSS /*, processOptions */);
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```
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[PostCSS HWB Function] 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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## Options
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### preserve
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The `preserve` option determines whether the original functional color notation
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is preserved. By default, it is not preserved.
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```js
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postcssHWBFunction({ preserve: true })
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```
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```pcss
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a {
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color: hwb(194 0% 0%);
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color: hwb(194 0% 0% / .5);
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}
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/* becomes */
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a {
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color: rgb(0, 195, 255);
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color: hwb(194 0% 0%);
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color: rgba(0, 195, 255, .5);
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color: hwb(194 0% 0% / .5);
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}
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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/#hwb-function
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[discord]: https://discord.gg/bUadyRwkJS
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[npm-url]: https://www.npmjs.com/package/@csstools/postcss-hwb-function
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[CSS Color]: https://drafts.csswg.org/css-color/#the-hwb-notation
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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 HWB Function]: https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-hwb-function
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