/**
 * String storage: redis_strings + coordination with redis_keys.
 */
import type Database from './driver.ts';
import type { KeyMeta, KeysStorage } from './keys.ts';
export interface StringSetOptions {
    updatedAt?: number;
    expiresAt?: number | bigint | null;
    existingMeta?: KeyMeta | null;
    replaceForeignType?: boolean;
}
export declare function createStringsStorage(db: Database, keys: KeysStorage): {
    get(key: Buffer): Buffer | null;
    set(key: Buffer, value: Buffer, options?: StringSetOptions): void;
    /**
     * Batch set: all key/value pairs in a single transaction.
     */
    setMultiple(entries: {
        key: Buffer;
        value: Buffer;
        options?: StringSetOptions;
    }[]): void;
    delete(key: Buffer): void;
    /**
     * Copy key's value to newKey. Caller must ensure newKey row exists in redis_keys.
     */
    copyKey(oldKey: Buffer, newKey: Buffer): void;
};
export type StringsStorage = ReturnType<typeof createStringsStorage>;