text: "use strict";
  
  var postcss = require("postcss");
  
  module.exports = postcss.plugin("single-charset", function () {
    return function (css) {
      var metCharset = false;
      css.eachAtRule("charset", function (atRule) {
        if (!metCharset) {
          metCharset = true;
          atRule.parent.prepend(atRule.clone());
        }
  
        atRule.removeSelf();
      });
    };
  });
  