Function createSyntheticEvent

packages/react-aria/src/interactions/utils.ts:22–30

(nativeEvent: Event)

// Turn a native event into a React synthetic event.
export function createSyntheticEvent<E extends SyntheticEvent>(nativeEvent: Event): E {
  let event = nativeEvent as any as E;
  event.nativeEvent = nativeEvent;
  event.isDefaultPrevented = () => event.defaultPrevented;
  // cancelBubble is technically deprecated in the spec, but still supported in all browsers.
  event.isPropagationStopped = () => (event as any).cancelBubble;
  event.persist = () => {};
  return event;
}

export function setEventTarget(event: Event, target: Element): void {
  Object.defineProperty(event, 'target', {value: target});