import { TrieConfig, defaultConfig } from './trie-config';
import { Emit } from './emit';
/**
 * Aho-Corasick implementation based on http://cr.yp.to/bib/1975/aho.pdf
 * Port of
 * robert-bor/aho-corasick https://github.com/robert-bor/aho-corasick and
 * hankcs/aho-corasick https://github.com/hankcs/aho-corasick
 */
export declare class Trie {
    private failureStateConstructed;
    private readonly rootState;
    private options;
    constructor(keywords?: string[], options?: Partial<TrieConfig>);
    addKeyword(keyword: string): void;
    /**
     * Find keywords from given text.
     *
     * @param text - The text to search for keywords.
     */
    parseText(text: string): Emit[];
    /**
     * Jump to the next state, using both goto and failure.
     *
     * @param currentState - Current state.
     * @param char - Accepted character.
     * @returns Jumped state.
     */
    private getState;
    private checkForConstructedFailureStates;
    private constructFailureStates;
    private removePartialMatches;
    private toEmits;
}
export { TrieConfig, defaultConfig, Emit };