/**
 * PKCE cookie storage utilities.
 * Handles serialization, parsing, and clearing of PKCE verifier cookies.
 *
 * @internal This module is not exported from the main package.
 */
/**
 * Cookie name for PKCE verifier storage.
 */
export declare const PKCE_COOKIE_NAME = "mastra_pkce_verifier";
/**
 * Data stored in the PKCE cookie.
 */
export interface PKCECookieData {
    verifier: string;
    state: string;
    expiresAt: number;
}
/**
 * Create a Set-Cookie header value for storing PKCE verifier and state.
 *
 * @param verifier - The code verifier for PKCE
 * @param state - The state parameter for CSRF protection
 * @param isProduction - Whether to add Secure flag (required for HTTPS)
 * @returns Set-Cookie header value
 */
export declare function setPKCECookie(verifier: string, state: string, isProduction: boolean): string;
/**
 * Parse the PKCE cookie from a Cookie header.
 *
 * @param cookieHeader - The Cookie header value (may be null)
 * @returns Parsed cookie data
 * @throws PKCEError if cookie is missing, expired, or malformed
 */
export declare function parsePKCECookie(cookieHeader: string | null): PKCECookieData;
/**
 * Create a Set-Cookie header value to clear the PKCE cookie.
 *
 * @returns Set-Cookie header value that expires the cookie
 */
export declare function clearPKCECookie(): string;
//# sourceMappingURL=cookie.d.ts.map