import type { ASTNode, GraphQLError, GraphQLFormattedError, Source, SourceLocation } from 'graphql';
import { ApolloError } from 'apollo-server-koa';
export declare class GQLException extends ApolloError {
    readonly code: string | undefined;
    readonly locations: ReadonlyArray<SourceLocation> | undefined;
    readonly path: ReadonlyArray<string | number> | undefined;
    readonly source: Source | undefined;
    readonly positions: ReadonlyArray<number> | undefined;
    readonly nodes: ReadonlyArray<ASTNode> | undefined;
    readonly originalError: Error | undefined;
    constructor(message: string, code?: string, extensions?: Record<string, any>);
}
export declare function formatGraphQlException(graphQlError: GraphQLError & {
    originalError: GQLException;
}): GraphQLFormattedError;
export declare function fromGraphQLError(error: GraphQLError, code?: string): void;
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