API and developer tools

async function httpsPost(registrationNumber, data) {
  return new Promise(async (resolve, reject) => {
    const options = {
      hostname: 'api.qvalia.com',
      path: `/transaction/${registrationNumber}/invoices/outgoing`,
      port: 443,
      method: 'POST',
      headers: {
        'Content-Type': 'application/json',
        Authorization: '412ee738......d3e469a7'
      }
    };
    const body = [];
    const req = https.request(options, res => {
      res.on('data', d=> {
        body.push(d);
      });
      res.on('end', () => {
        resolve(body);
      });
    });
    req.on('error', e => {
      reject(e);
    });
    req.write(JSON.stringify(data));
    req.end();
  });
}