type Run = [number, string, boolean];
export type NaturalKey = {
    runs: Run[];
    accents: string;
    caseBits: string;
    raw: string;
};
export declare function naturalKey(value: unknown): NaturalKey;
export declare function compareNaturalKey(a: NaturalKey, b: NaturalKey): number;
export declare function compareNatural(a: unknown, b: unknown): number;
export {};