export declare function nearSwapCorrector(s: string, pinyinSet: Set<string>): string[];
export declare function calcDamerauLevenshteinDistance(s1: string, s2: string): number;
export declare function damerauLevenshteinDistanceCorrector(s: string, pinyinSet: Set<string>, threshold: number): string[];
export declare function calcLevenshteinDistance(s1: string, s2: string): number;
export declare function levenshteinDistanceCorrector(s: string, pinyinSet: Set<string>, threshold: number): string[];