import { GrammarObject } from "../types/grammar_nodes.js";
import { Item } from "./item.js";
/**
 * Get set of all items that can be derived from the parameter items.
 * If the symbol of a parameter item is a Production, the initial items
 * of the production are added to the closure, and the process repeats
 * until no new items are added.
 *
 * If ENTER_TOKEN_PRODUCTIONS is `true`, then the closure of the production
 * referenced by the production token will be included. The item containing
 * the production token will not be included.
 *
 * @param items
 * @param grammar
 * @param ENTER_TOKEN_PRODUCTIONS
 */
export declare function getClosure(items: Item[], grammar: GrammarObject, depth?: number): Item[];
/**
 * Get a closure that includes items that transition from productions of completed items
 * @param closure
 * @param goto_transition_items
 * @param grammar
 * @param productions
 */
export declare function getFollowClosure(closure: Item[], goto_transition_items: Item[], grammar: GrammarObject, productions?: Set<number>, internal$item_track?: Set<string>, KEEP_END_ITEMS?: boolean): Item[];