/**
 * This Source Code is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/.
 *
 * Copyright (c) Infonomic Company Limited
 */
export type DocumentVersionParentConflictReason = 'missing' | 'stale';
export interface DocumentVersionParentAssertion {
    documentId: string;
    locale?: string;
    previousVersionId?: string;
    currentVersionId: string | null;
}
/**
 * Protect immutable-version carry-forward from an absent or stale parent.
 * Callers must obtain `currentVersionId` while holding the logical document's
 * write lock; this helper owns only the adapter-independent invariant.
 */
export declare function assertDocumentVersionParent(params: DocumentVersionParentAssertion): void;