export interface Trie {
    [prefix: string]: Trie | null;
}
export declare class CompactPrefixTree {
    words: Set<string>;
    private T;
    /**
     * Create a CompactPrefixTree from the given list of words
     */
    constructor(words?: string[]);
    /**
     * Add a word to the trie
     */
    add(word: string): this;
    /**
     * Get the longest prefix of word
     */
    prefix(word: string): {
        prefix: string;
        isProper: boolean;
    };
    /**
     * Get all entries from the trie
     */
    readonly items: Set<string>;
}
export default CompactPrefixTree;
/**
 * Add a word to Trie
 */
export declare function add(word: string, T: Trie | null): void;
/**
 * Get longest prefix of given word in Trie
 */
export declare function getPrefix(word: string, T: Trie | null): {
    prefix: string;
    isProper: boolean;
};
/**
 * Get all entries from the trie
 */
export declare function getWordsFromTrie(T: Trie): Set<string>;