import type { IAddressSpace } from "node-opcua-address-space-base";
export interface AddressSpaceDigest {
    nodes: number;
    references: number;
    hash: string;
}
/**
 * a fingerprint of an address space: node count, reference count, and a SHA-1 over every node's
 * id, browse name, class, reference count and, for variables, status code and value as JSON.
 * Two address spaces with the same digest hold the same nodes; the tests and the
 * `opcua-nodeset-image verify` command compare loads with it.
 */
export declare function digestAddressSpace(addressSpace: IAddressSpace): AddressSpaceDigest;