export interface MatchFn {
    (input: any): MatchResult;
    matchName?: string;
}
export declare type MatchResult = ExtendedMatchResult | boolean;
export interface ExtendedMatchResult {
    message?: string;
    name?: string;
    options?: any;
    pass: boolean;
    subResults?: MatchResult[];
}
export declare function isMatchResult(input: unknown): input is MatchResult;
export declare function isExtendedMatchResult(input: unknown): input is ExtendedMatchResult;
export declare function isPassed(result?: MatchResult): boolean;
export declare function addSubResult(result: MatchResult, subResult: MatchResult): MatchResult;