/**
 * Sentinel value passed as resource arguments to indicate that the query
 * should be skipped (not executed). Useful for conditional fetching.
 */
export declare const SKIP: unique symbol;
/**
 * Unique brand symbol used to distinguish {@link Keyed} wrappers
 * from plain argument objects at runtime.
 */
export declare const KEYED_BRAND: unique symbol;
/** Current serialization version used by the snapshot/restore mechanism. */
export declare const CURRENT_SNAPSHOT_VERSION = 1;