Function setStashFn

packages/core/src/event_delegation_utils.ts:159–162

(appId: string, fn: StashEventListener)

 * @returns A cleanup function that removes the stashing function when called.
 */
export function setStashFn(appId: string, fn: StashEventListener) {
  stashEventListeners.set(appId, fn);
  return () => stashEventListeners.delete(appId);
}

/**
 * Indicates whether the stashing code was added, prevents adding it multiple times.