/**
 * Card checks the payment flows call (validateCardNumber / validateExpiration). Pure; part of jsfe/helpers.
 */
/** 12–19 digits passing the Luhn checksum (catches nearly every typo, on every network). */
export function validateCardNumber(input: any): boolean;
/** MM and YY (two digits each), a real month, not expired, at most 20 years out. `now` is for tests. */
export function validateExpiration(month: any, year: any, now?: Date): boolean;
//# sourceMappingURL=card-checks.d.ts.map