import { ValkeyCommandArgument, ValkeyCommandArguments } from ".";
export declare const FIRST_KEY_INDEX = 2;
export declare const IS_READ_ONLY = true;
interface ZUnionOptions {
    WEIGHTS?: Array<number>;
    AGGREGATE?: "SUM" | "MIN" | "MAX";
}
export declare function transformArguments(keys: Array<ValkeyCommandArgument> | ValkeyCommandArgument, options?: ZUnionOptions): ValkeyCommandArguments;
export declare function transformReply(): Array<ValkeyCommandArgument>;
export {};