/**
 * Event Listener Test
 * The following test checks for event listeners that were not removed after component unmounting.
 * It does this by overriding the default addEventListener and removeEventListener methods on
 * window, document, and body, and proxying them with the original method in addition to our own
 * method which tracks every event that was added or removed. Once the component is unmounted,
 * we are able to check if any events are left.
 */
export declare const eventListenerTest: () => void;
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