import { Plugin, type Transaction } from 'prosemirror-state';
/**
 * Collapses redundant nested lists inside list items
 *
 * Converts structures where a list item starts with
 * a nested list into a flat list structure
 *
 * IMPORTANT: must be registered AFTER MergeListsPlugin.
 * Collapsing may create adjacent lists that require merging
 */
export declare const collapseListsPlugin: () => Plugin<any>;
/**
 * Finds list items with redundant nesting, collapses them recursively,
 * and applies replacements in reverse document order
 */
export declare function collapseAllNestedListItems(tr: Transaction): number | null;