const fetch = require('node-fetch');

let url = 'https://api.coralogix.com/mgmt/openapi/v3/alert-defs/123e4567-e89b-12d3-a456-426614174000';

let options = {method: 'DELETE', headers: {Authorization: 'Bearer <API_KEY>'}};

fetch(url, options)
  .then(res => res.json())
  .then(json => console.log(json))
  .catch(err => console.error('error:' + err));

{}