class BugNotifier { notify (uri, message) { return postData(uri, message) .then(data => console.log(data)) // JSON from `response.json()` call .catch(error => console.error(error)) } } function postData(uri, data) { return fetch(url, { body: JSON.stringify(data), // must match 'Content-Type' header credentials: 'same-origin', // include, same-origin, *omit headers: { 'content-type': 'application/json' }, method: 'POST', // *GET, POST, PUT, DELETE, etc. mode: 'cors', // no-cors, cors, *same-origin }) .then(response => response.json()) // parses response to JSON } module.exports = BugNotifier