import { DocumentNode, GraphQLSchema } from 'graphql';
import { SubschemaConfig } from '@graphql-tools/delegate';
import { HTTPExecutorOptions } from '@graphql-tools/executor-http';
import { MergeFieldConfigCandidate, ValidationLevel } from '@graphql-tools/stitch';
import { type Executor } from '@graphql-tools/utils';
export declare function ensureSupergraphSDLAst(supergraphSdl: string | DocumentNode): DocumentNode;
export interface FederationSubschemaConfig extends Omit<SubschemaConfig, 'executor' | 'name'> {
    executor: Executor;
    name: string;
    endpoint: string;
}
export interface GetStitchingOptionsFromSupergraphSdlOpts {
    supergraphSdl: string | DocumentNode;
    httpExecutorOpts?: Partial<HTTPExecutorOptions>;
    onSubschemaConfig?: (subschemaConfig: FederationSubschemaConfig) => void;
    batch?: boolean;
}
export declare function getStitchingOptionsFromSupergraphSdl(opts: GetStitchingOptionsFromSupergraphSdlOpts): {
    subschemas: SubschemaConfig<any, any, any, Record<string, any>>[];
    typeDefs: DocumentNode;
    assumeValid: boolean;
    assumeValidSDL: boolean;
    typeMergingOptions: {
        useNonNullableFieldOnConflict: boolean;
        validationSettings: {
            validationLevel: ValidationLevel;
        };
        fieldConfigMerger: (candidates: MergeFieldConfigCandidate<Record<string, any>>[]) => import("graphql").GraphQLFieldConfig<any, Record<string, any>, any>;
    };
};
export interface GetStitchedSchemaFromSupergraphSdlOpts extends GetStitchingOptionsFromSupergraphSdlOpts {
    supergraphSdl: string | DocumentNode;
    onStitchingOptions?(opts: ReturnType<typeof getStitchingOptionsFromSupergraphSdl>): void;
}
export declare function getStitchedSchemaFromSupergraphSdl(opts: GetStitchedSchemaFromSupergraphSdlOpts): GraphQLSchema;