/**
 * Import a single key from Redis into RespLite storages (shared by bulk and delta apply).
 * SPEC_F §F.7.1, F.8.2.
 */
import type { createKeysStorage } from '../storage/sqlite/keys.ts';
import type { createStringsStorage } from '../storage/sqlite/strings.ts';
import type { createHashesStorage } from '../storage/sqlite/hashes.ts';
import type { createSetsStorage } from '../storage/sqlite/sets.ts';
import type { createListsStorage } from '../storage/sqlite/lists.ts';
import type { createZsetsStorage } from '../storage/sqlite/zsets.ts';
import type { MigrationRedisClient } from './redis-client.ts';
/** Destination storages a key is written to. */
export interface ImportStorages {
    keys: ReturnType<typeof createKeysStorage>;
    strings: ReturnType<typeof createStringsStorage>;
    hashes: ReturnType<typeof createHashesStorage>;
    sets: ReturnType<typeof createSetsStorage>;
    lists: ReturnType<typeof createListsStorage>;
    zsets: ReturnType<typeof createZsetsStorage>;
}
export interface ImportKeyOptions {
    now?: number;
    zsetScanCount?: number;
}
export interface ImportKeyResult {
    ok: boolean;
    skipped?: boolean;
    error?: boolean;
    bytes?: number;
}
declare const SUPPORTED_TYPES: Set<string>;
/**
 * Fetch one key from Redis and write to storages. Idempotent (upsert).
 */
export declare function importKeyFromRedis(redisClient: MigrationRedisClient, keyName: string, storages: ImportStorages, options?: ImportKeyOptions): Promise<ImportKeyResult>;
export { SUPPORTED_TYPES };