Function findPendingTask

packages/zone.js/lib/browser/browser.ts:115–117

(target: any)

      const XMLHttpRequestPrototype: any = XMLHttpRequest.prototype;

      function findPendingTask(target: any) {
        return target[XHR_TASK];
      }

      let oriAddListener = XMLHttpRequestPrototype[ZONE_SYMBOL_ADD_EVENT_LISTENER];
      let oriRemoveListener = XMLHttpRequestPrototype[ZONE_SYMBOL_REMOVE_EVENT_LISTENER];