/**
 * @module runtime/storage/in-memory-storage
 * @description In-memory storage implementation (default)
 *
 * Fast, zero-dependency storage for development and testing.
 * No persistence - data is lost on restart.
 */
import type { HandlerManifest, HookManifest, GType, Transformer, VersionGraph, TimescapeMetadata } from '../types/manifest-store.js';
import type { StorageContract } from '../types/storage-contract.js';
/**
 * In-memory storage implementation
 */
export declare class InMemoryStorage implements StorageContract {
    private manifests;
    private hookManifests;
    private gtypes;
    private transformers;
    private versionGraphs;
    private timescapeMetadata;
    storeManifest(manifest: HandlerManifest): Promise<void>;
    getManifest(id: string, version?: string): Promise<HandlerManifest | undefined>;
    getAllManifestVersions(id: string): Promise<HandlerManifest[]>;
    storeHookManifest(manifest: HookManifest): Promise<void>;
    getHookManifest(handlerId: string): Promise<HookManifest | null>;
    listHookManifests(): Promise<HookManifest[]>;
    storeGType(gtype: GType): Promise<void>;
    getGType(ref: string): Promise<GType | undefined>;
    storeTransformer(transformer: Transformer): Promise<void>;
    getTransformer(id: string): Promise<Transformer | undefined>;
    getTransformersForVersions(handlerId: string, fromVersion: string, toVersion: string): Promise<Transformer[]>;
    storeVersionGraph(graph: VersionGraph): Promise<void>;
    getVersionGraph(handlerId: string): Promise<VersionGraph | undefined>;
    storeTimescapeMetadata(metadata: TimescapeMetadata): Promise<void>;
    getTimescapeMetadata(handlerId: string, version: string): Promise<TimescapeMetadata | undefined>;
    clear(): Promise<void>;
    getStats(): {
        manifestCount: number;
        gtypeCount: number;
        transformerCount: number;
        versionGraphCount: number;
        timescapeMetadataCount: number;
        hookManifestCount: number;
    };
}
/**
 * Create in-memory storage instance
 */
export declare function createInMemoryStorage(): StorageContract;
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