@type t() :: %IgniterCss.Analysis{
  at_rule_names: [String.t()],
  at_rules_count: non_neg_integer(),
  colors_count: non_neg_integer(),
  comments_count: non_neg_integer(),
  custom_properties_count: non_neg_integer(),
  declarations_count: non_neg_integer(),
  important_count: non_neg_integer(),
  imports_count: non_neg_integer(),
  keyframes_count: non_neg_integer(),
  media_queries_count: non_neg_integer(),
  property_frequency: [{String.t(), non_neg_integer()}],
  rules_count: non_neg_integer(),
  selectors: [String.t()],
  selectors_count: non_neg_integer(),
  top_level_rules_count: non_neg_integer(),
  unique_properties: non_neg_integer(),
  unique_selectors: non_neg_integer()
}