/**
 * Sets a cookie with the given name, value, and expiration days.
 *
 * @param {string} cname - The name of the cookie.
 * @param {string} cvalue - The value to be stored in the cookie.
 * @param {number} exdays - The number of days until the cookie expires.
 */
export declare function setCookie(cname: string, cvalue: string, exdays: number): void;
/**
 * Retrieves the value of a cookie with the given name.
 *
 * @param {string} cname - The name of the cookie to retrieve.
 * @returns {string} - The value of the cookie, or an empty string if the cookie is not found.
 */
export declare function getCookie(cname: string): string;
/**
 * Deletes a cookie with the given name.
 *
 * @param {string} name - The name of the cookie to delete.
 */
export declare function deleteCookie(name: string): void;