Function keySet

lib/web/CodeMirror/mode/css/css.js:419–425

(array)

});

  function keySet(array) {
    var keys = {};
    for (var i = 0; i < array.length; ++i) {
      keys[array[i].toLowerCase()] = true;
    }
    return keys;
  }

  var documentTypes_ = [
    "domain", "regexp", "url", "url-prefix"