debugging - 分度器:マリオネットデバッグモードを無効にする方法は?

Question

ここに私の分度器の設定があります

exports.config = {
  rootElement: '[ng-app="myapp"]',
  framework: 'jasmine',
  seleniumAddress: 'http://localhost:4444/wd/hub',
  specs: ['./assets/e2e/**/*protractor.js'],
  SELENIUM_PROMISE_MANAGER: false,
  baseUrl: 'https://localhost/',
  allScriptsTimeout: 20000,
  jasmineNodeOpts: {
    defaultTimeoutInterval: 100000,
  },
  capabilities: {
    browserName: 'firefox',
    marionette: true,
    acceptInsecureCerts: true,
    'moz:firefoxOptions': {
      args: ['--headless'],
    },
  },
}

そして、私の出力ログは次のようなデバッグメッセージで混雑しています

04:25:15 1544779515528  Marionette  DEBUG   [2147483649] Received DOM event beforeunload for https://localhost/login
04:25:18 1544779518273  Marionette  DEBUG   [2147483649] Received DOM event pagehide for https://localhost/login
04:25:30 [32m.[0m1544779531073    Marionette  DEBUG   [2147483649] Canceled page load listener because no navigation has been detected
04:25:31 [32m.[0m1544779532320    Marionette  DEBUG   [2147483649] Canceled page load listener because no navigation has been detected

これらの DEBUG メッセージを取り除く方法を教えてください。