ESS dream interface from the future

constructor.ess

var color = props.color || 'red'

button
  color: =color
  yield

  @media
    yield mobile

modal.ess

import Button from 'constructor.ess?raw'

.modal
  Button(color='blue')
    background: black
    block mobile
      background: white

output.css

.modal button {
  color: blue;
  background: black;
}

@media {
  .modal button {
    background: white;
  }
}