spee.ch/react/utils/request.js

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/**
* Parses the JSON returned by a network request
*
* @param {object} response A response from a network request
*
* @return {object} The parsed JSON from the request
*/
function parseJSON (response) {
if (response.status === 204 || response.status === 205) {
return null;
}
return response.json();
}
/**
* Parses the status returned by a network request
*
* @param {object} response A response from a network request
* @param {object} response The parsed JSON from the network request
*
* @return {object | undefined} Returns object with status and statusText, or undefined
*/
function checkStatus (response, jsonResponse) {
if (response.status >= 200 && response.status < 300) {
return jsonResponse;
}
const error = new Error(jsonResponse.message);
error.response = response;
throw error;
}
/**
* Requests a URL, returning a promise
*
* @param {string} url The URL we want to request
* @param {object} [options] The options we want to pass to "fetch"
*
* @return {object} The response data
*/
export default function request (url, options) {
return fetch(url, options)
.then(response => {
return Promise.all([response, parseJSON(response)]);
})
.then(([response, jsonResponse]) => {
return checkStatus(response, jsonResponse);
});
}