import type { UserStatus } from './user.utils.js';
import { type Id } from '../identifier.utils.js';
/**
 * Parameters for the update user command.
 */
export type UpdateUser = {
    /** User identifier (ID or username) */
    userId: Id;
    /** Optional new username (1-255 bytes) */
    username?: string;
    /** Optional new status */
    status?: UserStatus;
};
/**
 * Update user command definition.
 * Updates a user's username and/or status.
 */
export declare const UPDATE_USER: {
    code: number;
    serialize: ({ userId, username, status }: UpdateUser) => Buffer<ArrayBuffer>;
    deserialize: (r: import("../../index.js").CommandResponse) => boolean;
};
/**
 * Executable update user command function.
 */
export declare const updateUser: (getClient: import("../../index.js").ClientProvider) => (arg: UpdateUser) => Promise<boolean>;
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