/**
 * Response from a successful login.
 */
export type LoginResponse = {
    /** The authenticated user's ID */
    userId: number;
};
/**
 * Credentials for user login.
 */
export type LoginCredentials = {
    /** Username (1-255 bytes) */
    username: string;
    /** Password (1-255 bytes) */
    password: string;
    /** Optional client version string */
    version?: string;
    /** Optional client context string */
    context?: string;
};
/**
 * Serializes login credentials for the login command.
 *
 * @param credentials - Login credentials object
 * @returns Buffer containing serialized login request
 * @throws Error if username or password is not between 1 and 255 bytes
 */
export declare const serializeLoginUser: ({ username, password, version, context }: LoginCredentials) => Buffer<ArrayBuffer>;
/**
 * Serializes a token for the login with token command.
 *
 * @param token - Access token string (1-255 bytes)
 * @returns Buffer containing serialized token login request
 * @throws Error if token is not between 1 and 255 bytes
 */
export declare const serializeLoginWithToken: (token: string) => Buffer<ArrayBuffer>;
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