quran/node_modules/@sentry/browser/esm/transports/xhr.js

import { createTransport } from '@sentry/core';
import { SyncPromise } from '@sentry/utils';

/**
 * The DONE ready state for XmlHttpRequest
 *
 * Defining it here as a constant b/c XMLHttpRequest.DONE is not always defined
 * (e.g. during testing, it is `undefined`)
 *
 * @see {@link https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/readyState}
 */
const XHR_READYSTATE_DONE = 4;

/**
 * Creates a Transport that uses the XMLHttpRequest API to send events to Sentry.
 */
function makeXHRTransport(options) {
  function makeRequest(request) {
    return new SyncPromise((resolve, reject) => {
      const xhr = new XMLHttpRequest();

      xhr.onerror = reject;

      xhr.onreadystatechange = () => {
        if (xhr.readyState === XHR_READYSTATE_DONE) {
          resolve({
            statusCode: xhr.status,
            headers: {
              'x-sentry-rate-limits': xhr.getResponseHeader('X-Sentry-Rate-Limits'),
              'retry-after': xhr.getResponseHeader('Retry-After'),
            },
          });
        }
      };

      xhr.open('POST', options.url);

      for (const header in options.headers) {
        if (Object.prototype.hasOwnProperty.call(options.headers, header)) {
          xhr.setRequestHeader(header, options.headers[header]);
        }
      }

      xhr.send(request.body);
    });
  }

  return createTransport(options, makeRequest);
}

export { makeXHRTransport };
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