text: /**
   * @license
   * Copyright 2016 Google Inc. All rights reserved.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  'use strict';
  
  const Gatherer = require('./gatherer');
  
  class ThemeColor extends Gatherer {
  
    afterPass(options) {
      const driver = options.driver;
  
      return driver.querySelector('head meta[name="theme-color"]')
        .then(node => node && node.getAttribute('content'))
        .then(themeColorMeta => {
          this.artifact = themeColorMeta;
        })
        .catch(_ => {
          this.artifact = -1;
        });
    }
  }
  
  module.exports = ThemeColor;
  