fetchでBeaer認証

    let token = "<<your token>>"

    var myHeaders = new Headers();
    myHeaders.set('Content-Type', 'application/json');
    myHeaders.set('Authorization', "Bearer " + token);

    var info = { method: 'GET',
      headers: myHeaders,
      mode: 'cors',
      credentials: 'include' , 
      cache: 'default' };

    var responce = await(await fetch('url'
      ,info,
    ).then(this.handler)
    .catch(this.error)
    ).json();
    }