class Lookbook::ConfigLoader

def call
  if file.exist?
    config = YAML.load_file(file).deep_symbolize_keys
    env_config = config[:shared].to_h.deep_merge(config[env].to_h)
    Store.new(env_config)
  else
    raise ConfigError.new("Could not load configuration. No such file - #{file}")
  end
end