import type { Settings } from "../config/settings";
import type { MemoryBackend, MemoryBackendId } from "./types";
/**
 * Resident no-op backend used for the default `memory.backend=off` path.
 * Keeping this value here lets the identity resolver stay free of concrete
 * backend imports while preserving the legacy resolver API below.
 */
export declare const offBackend: MemoryBackend;
/**
 * Resolve the configured backend identity without importing any backend
 * implementation. This is safe for synchronous capability checks and keeps
 * the default `off` graph resident-free.
 */
export declare function resolveMemoryBackendId(settings: Settings): MemoryBackendId;
/**
 * Compatibility handles for callers that still resolve a backend object
 * synchronously. Their implementation methods delegate to the same literal
 * dynamic imports used by the runtime service; no backend graph is eager.
 */
export declare const localBackend: MemoryBackend;
/** Legacy synchronous resolver. New behavior callers should use the lazy service. */
export declare function resolveMemoryBackend(settings: Settings): MemoryBackend;