analyze-css/rules/emptyRules.js

CSS selectors complexity and performance analyzer

"use strict";

/**
 * @param { import("../lib/css-analyzer") } analyzer
 */
function rule(analyzer) {
  analyzer.setMetric("emptyRules");

  analyzer.on("rule", function (rule) {
    var properties = rule.declarations.filter(function (item) {
      return item.type === "declaration";
    });

    if (properties.length === 0) {
      analyzer.incrMetric("emptyRules");
      analyzer.addOffender("emptyRules", rule.selectors.join(", "));
    }
  });
}

rule.description = "Total number of empty CSS rules";
module.exports = rule;