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path: root/webAO/services/request.js
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/**
 * Make a GET request for a specific URI.
 * @param {string} url the URI to be requested
 * @returns response data
 * @throws {Error} if status code is not 2xx, or a network error occurs
 */
 const request = async url => {
    return new Promise((resolve, reject) => {
      const xhr = new XMLHttpRequest();
      xhr.responseType = 'text';
      xhr.addEventListener('error', () => {
        const err = new Error(`Request for ${url} failed: ${xhr.statusText}`);
        err.code = xhr.status;
        reject(err);
      });
      xhr.addEventListener('abort', () => {
        const err = new Error(`Request for ${url} was aborted!`);
        err.code = xhr.status;
        reject(err);
      });
      xhr.addEventListener('load', () => {
        if (xhr.status < 200 || xhr.status >= 300) {
          const err = new Error(`Request for ${url} failed with status code ${xhr.status}`);
          err.code = xhr.status;
          reject(err);
        } else {
          resolve(xhr.response);
        }
      });
      xhr.open('GET', url, true);
      xhr.send();
    });
  }
  export default request