The broccoli-postcss plugin runs your css through postcss plugins of your choosing.

npm install --save-dev broccoli-postcss

const compileCSS = require('broccoli-postcss')
const outputTree = compileCSS(tree, options)

Type: array

A list of plugin objects to be used by Postcss (a minimum of 1 plugin is required).

There are two supported methods for defining plugins:

1. Object form

   plugins: [
     {
       module: require('some-plugin'),
       options: { /* options for `some-plugin` */ }
     }
   ]

2. Function form

   plugins: [
     require('some-plugin')({ /* options for `some-plugin` */ })
   ]

Note: additional options (defined below) that are merged with the individual plugin options are only supported for plugins defined in "object form".

Type: array

A list of browsers to support. Follows the browserslist format. Will be passed to each plugin and can be overridden using the plugin’s options.

Type: object Default: { inline: false, annotation: false }

An object of options to describe how Postcss should handle source maps.

Type: array Default: []

Array of GlobStrings|RegExps|Functions to describe a whitelist of files to get processed by Postcss.

Type: array Default: []

Array of GlobStrings|RegExps|Functions to describe a blacklist of files to be ignored by Postcss.

/* Brocfile.js */
var compileCSS = require('broccoli-postcss')
var cssnext = require('postcss-cssnext')

var options =  {
  plugins: [
    {
      module: cssnext,
      options: {
          browsers: ['last 2 version']
      }
    },
  ],
  map: false,
  include: ['styles/*.css'],
  exclude: ['vendor/bootstrap/**/*']
}

var outputTree = compileCSS('app/styles', options)
module.exports = outputTree