import { type VercelKV } from "@vercel/kv";
import { BaseStore } from "@langchain/core/stores";
/**
 * Class that extends the BaseStore class to interact with a Vercel KV
 * database. It provides methods for getting, setting, and deleting data,
 * as well as yielding keys from the database.
 * @example
 * ```typescript
 * const store = new VercelKVStore({
 *   client: getClient(),
 * });
 * await store.mset([
 *   { key: "message:id:0", value: "encoded message 0" },
 *   { key: "message:id:1", value: "encoded message 1" },
 * ]);
 * const retrievedMessages = await store.mget(["message:id:0", "message:id:1"]);
 * const yieldedKeys = [];
 * for await (const key of store.yieldKeys("message:id:")) {
 *   yieldedKeys.push(key);
 * }
 * await store.mdelete(yieldedKeys);
 * ```
 */
export declare class VercelKVStore extends BaseStore<string, Uint8Array> {
    lc_namespace: string[];
    protected client: VercelKV;
    protected ttl?: number;
    protected namespace?: string;
    protected yieldKeysScanBatchSize: number;
    constructor(fields?: {
        client?: VercelKV;
        ttl?: number;
        namespace?: string;
        yieldKeysScanBatchSize?: number;
    });
    _getPrefixedKey(key: string): string;
    _getDeprefixedKey(key: string): string;
    /**
     * Gets multiple keys from the Redis database.
     * @param keys Array of keys to be retrieved.
     * @returns An array of retrieved values.
     */
    mget(keys: string[]): Promise<(Uint8Array | undefined)[]>;
    /**
     * Sets multiple keys in the Redis database.
     * @param keyValuePairs Array of key-value pairs to be set.
     * @returns Promise that resolves when all keys have been set.
     */
    mset(keyValuePairs: [string, Uint8Array][]): Promise<void>;
    /**
     * Deletes multiple keys from the Redis database.
     * @param keys Array of keys to be deleted.
     * @returns Promise that resolves when all keys have been deleted.
     */
    mdelete(keys: string[]): Promise<void>;
    /**
     * Yields keys from the Redis database.
     * @param prefix Optional prefix to filter the keys.
     * @returns An AsyncGenerator that yields keys from the Redis database.
     */
    yieldKeys(prefix?: string): AsyncGenerator<string>;
}