/**
 * @license
 * Copyright 2019 Ludan Stoecklé
 * SPDX-License-Identifier: Apache-2.0
 */
export interface Stemmer {
    stemWord: (arg0: string) => string;
}
export declare abstract class LanguageSyn {
    iso2: string;
    stemmer: Stemmer | null;
    constructor(iso2: string, stemmer: Stemmer | null);
    abstract getStandardStopWords(): string[];
    extractWords(input: string): string[];
}