Testing Print CSS - config/webpacker.yml

webpacker.yml

# Note: You must restart bin/webpack-dev-server for changes to take effect

default: &default
 # ....
 # The rest of your webpacker.yml config

test:
  <<: *default
  # The rest of your test config

  # **This is the important line**
  # Extract and emit a css file
  extract_css: true

production:
  # Your production config