import type { Descendant, Node, TraverseCallback, TraverseOptions } from './types';
/**
 * A class representing the {@link https://en.wikipedia.org/wiki/Trie | Trie data structure}.
 */
export declare class Trie {
    /**
     * Creates a new {@link Trie} by deserializing given string.
     *
     * The inverse of {@link Trie.serialize | serialize}.
     *
     * @param serialized - String with serialized data.
     * @returns {@link Trie} representing deserialized data.
     */
    static deserialize(serialized: string): Trie;
    /**
     * Creates a new {@link Trie} based on array of words.
     *
     * @param words - array of words to put in the {@link Trie}.
     * @returns New {@link Trie} containing all given words.
     */
    static fromArray(words: string[]): Trie;
    /**
     * Represents the root {@link Node} of the {@link Trie}.
     * It's not a copy. Mutate at your own risk.
     */
    readonly root: Node;
    /**
     * Creates a new {@link Trie} with optionally given root {@link Node}.
     *
     * @param root - Root {@link Node} of the {@link Trie} to be created.
     */
    constructor(root?: Node);
    /**
     * Inserts given word into the {@link Trie}.
     *
     * @param word - Word to be inserted into the {@link Trie}.
     * @returns {@link Node} representing the end of the added word.
     */
    add(word: string): Node;
    /**
     * Finds {@link Node} representing given prefix in the {@link Trie}.
     *
     * @param prefix - Prefix to be found.
     * @returns {@link Node} representing a given prefix, undefined if there is no such node.
     */
    find(prefix: string): Node | undefined;
    /**
     * Tells you whether given word is in the {@link Trie}.
     *
     * @param word - Word to be found.
     * @returns true if given word is in the {@link Trie}, false otherwise.
     */
    has(word: string): boolean;
    /**
     * Tells you whether there are any words with given prefix in the {@link Trie}.
     *
     * See: https://en.wikipedia.org/wiki/String_operations#Prefixes
     *
     * @param prefix - Prefix to be found.
     * @returns true if there are any words with given prefix in the {@link Trie}, false otherwise.
     */
    hasPrefix(prefix: string): boolean;
    /**
     * Removes given word from the {@link Trie} if it exists.
     *
     * @param word - Word to be removed.
     * @returns true if the word was removed, false otherwise.
     */
    remove(word: string): boolean;
    /**
     * Converts the {@link Trie} into a string.
     *
     * The inverse of {@link Trie.deserialize | deserialize}.
     *
     * It serializes {@link https://sjp.pl/slownik/growy/ | 42.8 MB Polish dictionary} down to 18.7 MB (-56%).
     *
     * It serializes {@link https://www.wordgamedictionary.com/twl06/download/twl06.txt | 1.9 MB English (US) dictionary} down to 1.4 MB (-30%).
     *
     * It serializes {@link https://www.wordgamedictionary.com/sowpods/download/sowpods.txt | 3 MB English (GB) dictionary} down to 2 MB (-32%).
     *
     * @returns String with serialized data.
     */
    serialize(): string;
    /**
     * Finds all {@link Descendant | descendants} of the {@link Trie | Trie's} root and returns them as an array.
     *
     * @param options - See {@link TraverseOptions}.
     * @returns An array of {@link Descendant | descendants}.
     */
    toArray(options?: TraverseOptions): Descendant[];
    /**
     * Visits every descendant {@link Node} of the {@link Trie} and calls a callback.
     *
     * @param callback - Callback that will be called for each visited {@link Node}. Return true from callback to stop traversing.
     * @param options - See {@link TraverseOptions}.
     */
    traverse(callback: TraverseCallback, options?: TraverseOptions): void;
}