Wrapper under XMLHttpRequest for simple request with Promise

ajax-request.js

export default (url, method = 'POST', params) => {
  return new Promise((resolve, reject) => {
    const request = new XMLHttpRequest();

    request.open(method, url, true);
    request.setRequestHeader("X-Requested-With", "XMLHttpRequest");
    request.onload = () => {
      if (request.status >= 200 && request.status < 400) {
        try{
          resolve(JSON.parse(request.responseText));
        } catch (e) {
          reject(e)
        }
      } else {
        reject('We reached our target server, but it returned an error');
        console.error('We reached our target server, but it returned an error');
      }
    };
    request.onerror = (e) => {
      reject('There was a connection error of some sort', e);
      console.error('There was a connection error of some sort', e)
    };
    request.send(params);
  });

}