import { type TargetGroup } from './group.utils.js';
/** Parameters for the join consumer group command. */
export type JoinGroup = TargetGroup;
/**
 * Join consumer group command definition.
 * Adds the current client as a member of the consumer group.
 */
export declare const JOIN_GROUP: {
    code: number;
    serialize: ({ streamId, topicId, groupId }: JoinGroup) => Buffer<ArrayBuffer>;
    deserialize: (r: import("../../index.js").CommandResponse) => boolean;
};
/**
 * Executable join consumer group command function.
 */
export declare const joinGroup: (getClient: import("../../index.js").ClientProvider) => (arg: TargetGroup) => Promise<boolean>;
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