export declare const luhnClean: (n: string | number) => string;
export declare const evenFactor: (i: number) => number;
export declare const oddFactor: (i: number) => number;
export declare const luhn: (n: string | number, factor?: (i: number) => number) => number;
export declare const luhnValidate: (n: string | number, factor?: (i: number) => number) => boolean;
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