forked from Fediversity/fediversity.eu
140 lines
4.3 KiB
Markdown
140 lines
4.3 KiB
Markdown
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# PostCSS Purgecss
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[PostCSS] plugin for PurgeCSS.
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[PostCSS]: https://github.com/postcss/postcss
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## Installation
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```
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npm i -D @fullhuman/postcss-purgecss postcss
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```
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## Usage
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```js
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const purgecss = require('@fullhuman/postcss-purgecss')
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postcss([
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purgecss({
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content: ['./src/**/*.html']
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})
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])
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```
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See [PostCSS] docs for examples for your environment.
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## Options
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All of the options of purgecss are available to use with the plugins.
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You will find below the main options available. For the complete list, go to the [purgecss documentation website](https://www.purgecss.com/configuration.html#options).
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### `content` (**required** or use `contentFunction` instead)
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Type: `Array<string>`
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You can specify content that should be analyzed by Purgecss with an array of filenames or globs. The files can be HTML, Pug, Blade, etc.
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### `contentFunction` (as alternative to `content`)
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Type: `(sourceInputFile: string) => Array<string>`
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The function receives the current source input file. With this you may provide a specific array of globs for each input. E.g. for
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an angular application only scan the components template counterpart for every component scss file:
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```js
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purgecss({
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contentFunction: (sourceInputFileName: string) => {
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if (/component\.scss$/.test(sourceInputFileName))
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return [sourceInputFileName.replace(/scss$/, 'html')]
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else
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return ['./src/**/*.html']
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},
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})
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```
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### `extractors`
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Type: `Array<Object>`
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Purgecss can be adapted to suit your needs. If you notice a lot of unused CSS is not being removed, you might want to use a custom extractor.
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More information about extractors [here](https://www.purgecss.com/extractors.html).
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### `safelist`
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You can indicate which selectors are safe to leave in the final CSS. This can be accomplished with the option `safelist`.
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Two forms are available for this option.
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```ts
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safelist: ['random', 'yep', 'button', /^nav-/]
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```
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In this form, safelist is an array that can take a string or a regex.
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The _complex_ form is:
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```ts
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safelist: {
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standard: ['random', 'yep', 'button', /^nav-/],
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deep: [],
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greedy: [],
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keyframes: [],
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variables: []
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}
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```
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### `blocklist`
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Blocklist will block the CSS selectors from appearing in the final output CSS. The selectors will be removed even when they are seen as used by PurgeCSS.
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```ts
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blocklist: ['usedClass', /^nav-/]
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```
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Even if nav-links and usedClass are found by an extractor, they will be removed.
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### `skippedContentGlobs`
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If you provide globs for the `content` parameter, you can use this option to exclude certain files or folders that would otherwise be scanned. Pass an array of globs matching items that should be excluded. (Note: this option has no effect if `content` is not globs.)
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```ts
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skippedContentGlobs: ['node_modules/**', 'components/**']
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```
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Here, PurgeCSS will not scan anything in the "node_modules" and "components" folders.
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### `rejected`
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Type: `boolean`
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Default value: `false`
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If true, purged selectors will be captured and rendered as PostCSS messages.
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Use with a PostCSS reporter plugin like [`postcss-reporter`](https://github.com/postcss/postcss-reporter)
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to print the purged selectors to the console as they are processed.
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### `keyframes`
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Type: `boolean`
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Default value: `false`
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If you are using a CSS animation library such as animate.css, you can remove unused keyframes by setting the keyframes option to true.
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#### `fontFace`
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Type: `boolean`
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Default value: `false`
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If there are any unused @font-face rules in your css, you can remove them by setting the fontFace option to true.
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## Contributing
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Please read [CONTRIBUTING.md](./../../CONTRIBUTING.md) for details on our code of
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conduct, and the process for submitting pull requests to us.
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## Versioning
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postcss-purgecss use [SemVer](http://semver.org/) for versioning.
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## License
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This project is licensed under the MIT License - see the [LICENSE](./../../LICENSE) file
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for details.
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