/**
 * Facebook Cookie Manager
 *
 * Manages _fbp (Facebook Browser ID) and _fbc (Facebook Click ID) cookies
 * as first-party cookies for server-side Facebook CAPI integration.
 *
 * _fbp format: fb.1.{creation_timestamp_ms}.{random_10_digits}
 *   - Set on first visit, 180-day expiry (Meta spec)
 *
 * _fbc format: fb.1.{click_timestamp_ms}.{fbclid}
 *   - Set when fbclid URL parameter is present, 90-day expiry (Meta spec)
 *   - Persisted so CAPI events carry the correct click timestamp
 */
/**
 * Initialize Facebook cookies on SDK boot.
 * - Generates _fbp if missing
 * - Persists _fbc from fbclid URL parameter if present
 */
export declare function initFacebookCookies(): void;
/**
 * Read the current _fbp cookie value.
 */
export declare function getFbp(): string | undefined;
/**
 * Read the current _fbc cookie value.
 */
export declare function getFbc(): string | undefined;
/**
 * Remove both _fbp and _fbc cookies.
 * Called when advertising consent is revoked.
 */
export declare function removeFacebookCookies(): void;