105 lines
2.9 KiB
Markdown
105 lines
2.9 KiB
Markdown
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# PostCSS Exponential Functions [<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-exponential-functions.svg" height="20">][npm-url] [<img alt="CSS Standard Status" src="https://cssdb.org/images/badges/exponential-functions.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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```bash
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npm install @csstools/postcss-exponential-functions --save-dev
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```
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[PostCSS Exponential Functions] lets you use the `pow()`, `sqrt()`, `hypot()`, `log()`, `exp()` functions following the [CSS Values 4 Specification].
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```pcss
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.foo {
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top: calc(1px * pow(2, 3));
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line-height: sqrt(1.2);
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padding: hypot(3px, 4px);
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order: log(10, 10);
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min-height: calc(e - exp(1));
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}
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/* becomes */
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.foo {
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top: 8px;
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line-height: 1.0954451150103;
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padding: 5px;
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order: 1;
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min-height: 0;
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}
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```
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## Usage
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Add [PostCSS Exponential Functions] to your project:
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```bash
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npm install postcss @csstools/postcss-exponential-functions --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 postcssExponentialFunctions = require('@csstools/postcss-exponential-functions');
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postcss([
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postcssExponentialFunctions(/* pluginOptions */)
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]).process(YOUR_CSS /*, processOptions */);
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```
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[PostCSS Exponential Functions] runs in all Node environments, with special
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instructions for:
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- [Node](INSTALL.md#node)
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- [PostCSS CLI](INSTALL.md#postcss-cli)
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- [PostCSS Load Config](INSTALL.md#postcss-load-config)
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- [Webpack](INSTALL.md#webpack)
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- [Next.js](INSTALL.md#nextjs)
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- [Gulp](INSTALL.md#gulp)
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- [Grunt](INSTALL.md#grunt)
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## Options
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### preserve
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The `preserve` option determines whether the original notation
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is preserved. By default, it is not preserved.
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```js
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postcssExponentialFunctions({ preserve: true })
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```
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```pcss
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.foo {
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top: calc(1px * pow(2, 3));
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line-height: sqrt(1.2);
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padding: hypot(3px, 4px);
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order: log(10, 10);
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min-height: calc(e - exp(1));
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}
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/* becomes */
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.foo {
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top: 8px;
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top: calc(1px * pow(2, 3));
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line-height: 1.0954451150103;
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line-height: sqrt(1.2);
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padding: 5px;
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padding: hypot(3px, 4px);
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order: 1;
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order: log(10, 10);
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min-height: 0;
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min-height: calc(e - exp(1));
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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/#exponential-functions
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[discord]: https://discord.gg/bUadyRwkJS
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[npm-url]: https://www.npmjs.com/package/@csstools/postcss-exponential-functions
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[PostCSS]: https://github.com/postcss/postcss
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[PostCSS Exponential Functions]: https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-exponential-functions
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[CSS Values 4 Specification]: https://www.w3.org/TR/css-values-4/#exponent-funcs
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