import { activeRuntimePathForOmsRoot, readActiveRuntimePointer, type ActiveRuntimePointerView } from "../runtime/active-runtime-guard.js";
import type { ActiveRuntimePointer, Clock, KernelPaths } from "./types.js";
export declare function readActiveRuntime(paths: KernelPaths): ActiveRuntimePointer | null;
export declare function setActiveRuntime(paths: KernelPaths, clock: Clock, activeVersion: 1 | 2, reason: string): ActiveRuntimePointer;
export declare function requireActiveVersion(paths: KernelPaths, expected: 1 | 2): void;
export declare function assertSingleMutator(paths: KernelPaths, writerVersion: 1 | 2): void;
export declare function assertV2MutationAllowed(paths: KernelPaths): void;
export { activeRuntimePathForOmsRoot, readActiveRuntimePointer };
export type { ActiveRuntimePointerView };