interface SubscriptionOptions<T> {
    next?: (data: T) => void;
    error?: (error: any) => void;
}
declare class GraphQLClient {
    constructor(awsconfig: any);
    query<T = {}, U = {}>(query: any, variables: T, token: string): Promise<U>;
    mutate<T = {}, U = {}>(mutation: any, variables: T, token: string): Promise<U>;
    subscribe<T, U = any>(query: any, variables: T, subscriptionOpts: SubscriptionOptions<U>): any;
    private prepareClient;
}
export default GraphQLClient;