import { GraphQLError } from 'graphql';
import { HTTPError, InvalidContentLengthError, RequestBodyTooLargeError } from '@whatwg-node/server';
import type { ResultProcessorInput } from './plugins/types.js';
import type { FetchAPI, GraphQLHTTPExtensions, YogaConfigContext, YogaInitialContext, YogaMaskedErrorOpts } from './types.js';
declare module 'graphql' {
    interface GraphQLError {
        /**
         * Optional schema coordinate (e.g. "MyType.myField") associated with this error.
         * Experimental; populated when useErrorCoordinate / schemaCoordinateInErrors is enabled.
         */
        readonly coordinate?: string;
    }
    interface GraphQLErrorExtensions {
        http?: GraphQLHTTPExtensions;
        unexpected?: boolean;
    }
}
/**
 * Attach experimental schema `coordinate` to a GraphQLError.
 * graphql-js GraphQLErrorOptions does not know about coordinate yet, so this
 * uses defineProperty (same approach as `@graphql-tools/utils` locatedError).
 *
 * Prefer reading with `getSchemaCoordinate` from `@graphql-tools/utils`.
 */
export declare function withSchemaCoordinate(error: GraphQLError, coordinate: string | undefined): GraphQLError;
export declare function isGraphQLError(val: unknown): val is GraphQLError;
export declare function isOriginalGraphQLError(val: unknown): val is GraphQLError & {
    originalError: GraphQLError;
};
export declare function isAbortError(error: unknown): error is DOMException;
export declare function isRequestBodyLimitError(error: unknown): error is RequestBodyTooLargeError | InvalidContentLengthError;
export declare function responseFromBodyLimitError(error: HTTPError, fetchAPI: Pick<FetchAPI, 'Response'>): Response;
export declare function handleError(error: unknown, maskedErrorsOpts: YogaMaskedErrorOpts | null, context: Partial<YogaInitialContext> & YogaConfigContext): GraphQLError[];
export declare function getResponseInitByRespectingErrors(result: ResultProcessorInput, headers?: Record<string, string>, isApplicationJson?: boolean): {
    status: number;
    headers: Record<string, string>;
};
export declare function areGraphQLErrors(obj: unknown): obj is readonly GraphQLError[];