/**
 * Calculate left and right parity for a given credential
 * @param {string} contents - Wiegand credential
 * @throws
 * @returns {{left: number, right: number}}
 */
declare function calculate(contents: string): {
    left: number;
    right: number;
};
/**
 * Confirm left and right parity bits. Throws an exception if they are not valid.
 * @param {string} message - a Wiegand credential message
 * @throws
 * @returns {boolean}
 */
declare function validate(message: string): boolean;
/**
 * Wrap a Wiegand credential in parity bits
 * @param {string} credential - Wiegand credential
 * @throws
 * @returns {string} - The credential wrapped in parity bits
 */
declare function wrap(contents: string): string;
declare const _default: {
    calculate: typeof calculate;
    validate: typeof validate;
    wrap: typeof wrap;
};
export default _default;