export declare class OtpService {
    private client;
    constructor(token: string);
    generate(request: GenerateRequest): Promise<GenerateResponse>;
    validate(request: ValidateRequest): Promise<ValidateResponse>;
}
export interface GenerateRequest {
    expiry?: number;
    id?: string;
    size?: number;
}
export interface GenerateResponse {
    code?: string;
}
export interface ValidateRequest {
    code?: string;
    id?: string;
}
export interface ValidateResponse {
    success?: boolean;
}