import { default as PSPDFKitType } from 'pspdfkit';
/**
 * Tear down a PSPDFKit instance for a container without ever throwing.
 *
 * A password-protected PDF makes PSPDFKit render its own built-in password
 * dialog and stay mid-load (the `PSPDFKit.load()` Promise never resolves, so no
 * instance is ever assigned). Calling `PSPDFKit.unload(container)` while the
 * container is still loading throws — which previously propagated out of the
 * viewer's close handler and aborted it before the host was told to close. The
 * user was then stuck on the password prompt with no way out but a full browser
 * refresh (neither Exit nor Esc worked).
 *
 * Swallowing the unload error here keeps close/unmount teardown resilient: the
 * container is removed from the DOM by the unmount that follows, which is what
 * actually disposes the stuck dialog.
 */
export declare function safePspdfkitUnload(pspdfkit: Pick<typeof PSPDFKitType, 'unload'> | undefined, container: HTMLElement | null): void;