import type { CommandResponse } from '../../client/client.type.js';
import { type Id } from '../identifier.utils.js';
import { type User } from './user.utils.js';
/**
 * Parameters for the get user command.
 */
export type GetUser = {
    /** User identifier (ID or username) */
    userId: Id;
};
/**
 * Get user command definition.
 * Retrieves a single user with permissions.
 */
export declare const GET_USER: {
    code: number;
    serialize: ({ userId }: GetUser) => Buffer<ArrayBufferLike>;
    deserialize: (r: CommandResponse) => User | null;
};
/**
 * Executable get user command function.
 */
export declare const getUser: (getClient: import("../../client/client.type.js").ClientProvider) => (arg: GetUser) => Promise<User | null>;
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