import { GraphQLError } from 'graphql';
export declare function isApolloError(err: Error): err is ApolloError;
export declare class ApolloError extends Error {
    message: string;
    graphQLErrors: GraphQLError[];
    networkError: Error | null;
    extraInfo: any;
    constructor({ graphQLErrors, networkError, errorMessage, extraInfo, }: {
        graphQLErrors?: GraphQLError[];
        networkError?: Error | null;
        errorMessage?: string;
        extraInfo?: any;
    });
}
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