/**
 * data-structure-typed
 *
 * @author Pablo Zeng
 * @copyright Copyright (c) 2022 Pablo Zeng <zrwusa@gmail.com>
 * @license MIT License
 */
import type { AVLTreeMultiMapOptions, AVLTreeOptions, ElemOf, EntryCallback, IterationType } from '../../types';
import { AVLTree, AVLTreeNode } from './avl-tree';
import { IBinaryTree } from '../../interfaces';
/**
 * Node used by AVLTreeMultiMap; stores the key with a bucket of values (array).
 * @remarks Time O(1), Space O(1)
 * @template K
 * @template V
 */
export declare class AVLTreeMultiMapNode<K = any, V = any> extends AVLTreeNode<K, V[]> {
    parent?: AVLTreeMultiMapNode<K, V>;
    /**
     * Create an AVLTreeMultiMap node with a value bucket.
     * @remarks Time O(1), Space O(1)
     * @param key - Key of the node.
     * @param value - Initial array of values.
     * @returns New AVLTreeMultiMapNode instance.
     */
    constructor(key: K, value: V[]);
    _left?: AVLTreeMultiMapNode<K, V> | null | undefined;
    /**
     * Get the left child pointer.
     * @remarks Time O(1), Space O(1)
     * @returns Left child node, or null/undefined.
     */
    get left(): AVLTreeMultiMapNode<K, V> | null | undefined;
    /**
     * Set the left child and update its parent pointer.
     * @remarks Time O(1), Space O(1)
     * @param v - New left child node, or null/undefined.
     * @returns void
     */
    set left(v: AVLTreeMultiMapNode<K, V> | null | undefined);
    _right?: AVLTreeMultiMapNode<K, V> | null | undefined;
    /**
     * Get the right child pointer.
     * @remarks Time O(1), Space O(1)
     * @returns Right child node, or null/undefined.
     */
    get right(): AVLTreeMultiMapNode<K, V> | null | undefined;
    /**
     * Set the right child and update its parent pointer.
     * @remarks Time O(1), Space O(1)
     * @param v - New right child node, or null/undefined.
     * @returns void
     */
    set right(v: AVLTreeMultiMapNode<K, V> | null | undefined);
}
/**
 * AVL-tree–based multimap (key → array of values). Preserves O(log N) updates and supports map-like mode.
 * @remarks Time O(1), Space O(1)
 * @template K
 * @template V
 * @template R
 */
export declare class AVLTreeMultiMap<K = any, V = any, R extends object = object> extends AVLTree<K, V[], R> implements IBinaryTree<K, V[], R> {
    /**
     * Create an AVLTreeMultiMap and optionally bulk-insert items.
     * @remarks Time O(N log N), Space O(N)
     * @param [keysNodesEntriesOrRaws] - Iterable of keys/nodes/entries/raw items to insert.
     * @param [options] - Options for AVLTreeMultiMap (comparator, reverse, map mode).
     * @returns New AVLTreeMultiMap instance.
     */
    constructor(keysNodesEntriesOrRaws?: Iterable<K | AVLTreeMultiMapNode<K, V> | [K | null | undefined, V[] | undefined] | null | undefined | R>, options?: AVLTreeMultiMapOptions<K, V[], R>);
    _createNode(key: K, value?: V[]): AVLTreeMultiMapNode<K, V>;
    add(keyNodeOrEntry: K | AVLTreeMultiMapNode<K, V> | [K | null | undefined, V[] | undefined] | null | undefined): boolean;
    add(key: K, value: V): boolean;
    /**
     * Delete a single value from the bucket at a given key. Removes the key if the bucket becomes empty.
     * @remarks Time O(log N), Space O(1)
     * @param keyNodeOrEntry - Key, node, or [key, values] entry to locate the bucket.
     * @param value - Value to remove from the bucket.
     * @returns True if the value was removed; false if not found.
     */
    deleteValue(keyNodeOrEntry: K | AVLTreeMultiMapNode<K, V> | [K | null | undefined, V[] | undefined] | null | undefined, value: V): boolean;
    /**
     * Rebuild the tree into a perfectly balanced form using in-order nodes.
     * @remarks Time O(N), Space O(N)
     * @param [iterationType] - Traversal style to use when constructing the balanced tree.
     * @returns True if rebalancing succeeded (tree not empty).
     */
    perfectlyBalance(iterationType?: IterationType): boolean;
    /**
     * Create a new tree by mapping each [key, values] bucket.
     * @remarks Time O(N log N), Space O(N)
     * @template MK
     * @template MVArr
     * @template MR
     * @param callback - Function mapping (key, values, index, tree) → [newKey, newValue].
     * @param [options] - Options for the output tree.
     * @param [thisArg] - Value for `this` inside the callback.
     * @returns A new AVLTreeMultiMap when mapping to array values; see overloads.
     */
    map<MK = K, MVArr extends unknown[] = V[], MR extends object = object>(callback: EntryCallback<K, V[] | undefined, [MK, MVArr]>, options?: Partial<AVLTreeOptions<MK, MVArr, MR>>, thisArg?: unknown): AVLTreeMultiMap<MK, ElemOf<MVArr>, MR>;
    /**
     * Create a new tree by mapping each [key, values] bucket.
     * @remarks Time O(N log N), Space O(N)
     * @template MK
     * @template MV
     * @template MR
     * @param callback - Function mapping (key, values, index, tree) → [newKey, newValue].
     * @param [options] - Options for the output tree.
     * @param [thisArg] - Value for `this` inside the callback.
     * @returns A new AVLTree when mapping to non-array values; see overloads.
     */
    map<MK = K, MV = V[], MR extends object = object>(callback: EntryCallback<K, V[] | undefined, [MK, MV]>, options?: Partial<AVLTreeOptions<MK, MV, MR>>, thisArg?: unknown): AVLTree<MK, MV, MR>;
    /**
     * (Protected) Create an empty instance of the same concrete class.
     * @remarks Time O(1), Space O(1)
     * @template TK
     * @template TV
     * @template TR
     * @param [options] - Optional constructor options for the like-kind instance.
     * @returns An empty like-kind instance.
     */
    protected _createInstance<TK = K, TV = V, TR extends object = R>(options?: Partial<AVLTreeOptions<TK, TV, TR>>): this;
    /**
     * (Protected) Create a like-kind instance and seed it from an iterable.
     * @remarks Time O(N log N), Space O(N)
     * @template TK
     * @template TV
     * @template TR
     * @param iter - Iterable used to seed the new tree.
     * @param [options] - Options merged with the current snapshot.
     * @returns A like-kind AVLTree built from the iterable.
     */
    protected _createLike<TK = K, TV = V, TR extends object = R>(iter?: Iterable<TK | AVLTreeNode<TK, TV> | [TK | null | undefined, TV | undefined] | null | undefined | TR>, options?: Partial<AVLTreeOptions<TK, TV, TR>>): AVLTree<TK, TV, TR>;
}