45 lines
1.1 KiB
JavaScript
45 lines
1.1 KiB
JavaScript
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/**
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* Parses the JSON returned by a network request
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*
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* @param {object} response A response from a network request
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*
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* @return {object} The parsed JSON from the request
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*/
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function parseJSON (response) {
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if (response.status === 204 || response.status === 205) {
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return null;
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}
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return response.json();
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}
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/**
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* Checks if a network request came back fine, and throws an error if not
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*
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* @param {object} response A response from a network request
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*
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* @return {object|undefined} Returns either the response, or throws an error
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*/
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function checkStatus (response) {
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if (response.status >= 200 && response.status < 300) {
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return response;
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}
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const error = new Error(response.statusText);
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error.response = response;
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throw error;
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}
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/**
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* Requests a URL, returning a promise
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*
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* @param {string} url The URL we want to request
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* @param {object} [options] The options we want to pass to "fetch"
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*
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* @return {object} The response data
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*/
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export default function request (url, options) {
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return fetch(url, options)
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.then(checkStatus)
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.then(parseJSON);
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}
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