class HttpHelper {

static fetch(url, method, headers, body) {

let options = Object.assign({ method });

if (headers) {

options = Object.assign(options, { headers });

}

if (body && method !== 'GET') {

options = Object.assign(options, { body });

}

const request = new Request(url, options);

// console.log(options);

// console.log(request);

return fetch(request)

.then((response) => {

// console.log(response);

if (response.status >= 200 && response.status < 300) {

return response.json();

}

const error = new Error(`${response.statusText}(${response.status}), URL: ${response.url}`);

// error.response = response

// console.log(error);

return Promise.reject(error);

})

.catch((error) => {

throw error;

});

}

}

export default HttpHelper;