import type { SlateEditor } from '@udecode/plate-common';
import type { Location } from 'slate';
import type { ListsSchema } from '../types';
/**
 * Check if `editor.deleteBackward()` is safe to call (it won't break the structure).
 */
export declare function isDeleteBackwardAllowed(editor: SlateEditor, schema: ListsSchema, at?: Location | null): boolean;