PostCSS Plugin
Use PostCSS with PostHTML
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## Install
```bash
npm i -D posthtml-postcss
```
## Usage
```js
import {dirname} from 'node:path'
import {readFileSync} from 'node:fs'
import {fileURLToPath} from 'node:url'
import posthtml from 'posthtml'
import postcss from 'posthtml-postcss'
const postcssPlugins = []
const postcssOptions = {}
const filterType = /^text\/css$/
const __filename = fileURLToPath(import.meta.url)
const __dirname = dirname(__filename)
const filePath = `${__dirname}/index.html`
const html = readFileSync(filePath, 'utf8')
posthtml([
postcss(postcssPlugins, postcssOptions, filterType)
])
.process(html, {from: filePath})
.then((result) => console.log(result.html))
```
If you don't pass any arguments to `posthtml-postcss`, it will try to use your project's PostCSS configuration (see [`postcss-load-config`](https://www.npmjs.com/package/postcss-load-config)).
Notice that we're setting the option `from` when calling `process`. `posthtml-postcss` forwards this to PostCSS, which is useful for syntax error messages. (`postcss-cli` and `gulp-posthtml` are setting `from` automatically.)
## Example
```js
import posthtml from 'posthtml'
import postcss from 'posthtml-postcss'
import autoprefixer from 'autoprefixer'
const postcssPlugins = [
autoprefixer({ browsers: ['last 2 versions'] })
]
const postcssOptions = {}
const filterType = /^text\/css$/
const html = `