Function plugin

test/postcss.test.js:8–22

()

test('works with other PostCSS plugins', () => {
  let plugin = () => {
    return {
      AtRule: {
        mixin: (atRule, { Declaration }) => {
          atRule.replaceWith(
            new Declaration({ prop: 'user-select', value: 'none' })
          )
        }
      },
      postcssPlugin: 'test',
      Rule(rule) {
        rule.selector = 'b'
      }
    }
  }
  plugin.postcss = true

  let result = postcss([