import { Client } from "urql";
export declare class GraphQLClient {
    client?: Client;
    constructor({ clientKey, userId, userSignature, apiUrl, }: {
        clientKey?: string;
        userId?: string;
        userSignature?: string;
        apiUrl?: string;
    });
    query(queryString: any, variables: any): Promise<import("urql").OperationResult<any, any>> | undefined;
    mutate(mutateString: any, variables: any): Promise<import("urql").OperationResult<any, any>> | undefined;
}
export default GraphQLClient;
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