@reboost/plugin-postcss

PostCSS Plugin

Adds support for transforming stylesheets with PostCSS. This plugin does not work with PostCSS versions below 8, if you want to use PostCSS 7, please use the older version of this plugin.

Usage

Setup

Install it using npm

npm i -D @reboost/plugin-postcss

Install postcss package, if not already installed.

npm i postcss

Import it from the package

const { start } = require('reboost');
const PostCSSPlugin = require('@reboost/plugin-postcss');

Add it to the plugins array

const { start } = require('reboost');
const PostCSSPlugin = require('@reboost/plugin-postcss');

start({
  plugins: [
    PostCSSPlugin({
      // Options
    })
  ]
})

Now it will transform all stylesheets with your PostCSS plugins.

Config file

This plugin uses postcss-load-config to load PostCSS configurations. Please read their readme to understand how configuration files are loaded.

Options

ctx

Type: object

This plugin exposes context ctx to the config file, so that your config file can be dynamic. Like so

postcss.config.js

module.exports = ({ file, options, env }) => {
  parser: file.extname === '.sss' ? 'sugarss' : undefined
  // More configurations
}

You can set ctx to an object to pass the data to the options object in your postcss.config.js, like so

reboost.js

const { start } = require('reboost');
const PostCSSPlugin = require('@reboost/plugin-postcss');

start({
  plugins: [
    PostCSSPlugin({
      ctx: {
        usePreset: true
      }
    })
  ]
})

postcss.config.js

module.exports = ({ file, options, env }) => {
  plugins: {
    // `usePreset` is now available in `options` object
    'postcss-preset-env': options.usePreset ? {} : false
  }
}

path

Type: string

The path to search for any of the configuration files. Configurations can be loaded from

• package.json
• .postcssrc
• .postcssrc.js or postcss.config.js

Using this option you can specify another directory that should be searched for the config file, like when you store your config files in different directories. The value should be a path to a DIRECTORY (where the config file is stored), not a path to a FILE.