Send Xhr-request

send.js

function send(method, url, headers = {}, data = null) {
            return new Promise((resolve, reject) => {
              console.log(data);
              const xhr = new XMLHttpRequest();
              xhr.onload = () => resolve(xhr);
              xhr.onerror = error => reject(error);
              xhr.open(method, url, true);
              console.log(xhr);
              Object.entries(headers).forEach(([header, value]) => xhr.setRequestHeader(header, value));
              xhr.send(data);
            });
          }