a fetch function with oauth 2.0 capability

gistfile1.txt

function fetchWithAuth(url, options) {
  var accessToken = '<your access token>';
  if (!options) {
    options = {};
  }
  if (!options.headers) {
    options.headers = new Headers();
  }
  options.headers.append('Authorization', 'Bearer ' + accessToken);
  return fetch(url, options);
}