/**
 * .what = marker symbols for domain object type checks
 * .why = extracted to break circular dependencies with isOf* functions
 *
 * uses Symbol.for() for cross-version, global registry
 */
export declare const MARK_AS_DOMAIN_OBJECT: unique symbol;
export declare const MARK_AS_DOMAIN_ENTITY: unique symbol;
export declare const MARK_AS_DOMAIN_EVENT: unique symbol;
export declare const MARK_AS_DOMAIN_LITERAL: unique symbol;