import { DataSource as ApolloDataSource } from 'apollo-datasource';
import { FetchResult, GraphQLRequest } from 'apollo-link';
import { DocumentNode, FieldNode, GraphQLResolveInfo } from 'graphql';
export type PostOperationFn<TData = unknown, TContext = unknown> = (fetchResult: FetchResult<Record<string, TData>>, info: {
    context: TContext;
    info: GraphQLResolveInfo;
    field: string;
}) => TData;
export type RemapRule = (node: FieldNode, info: {
    unfilteredNode: FieldNode;
    resolveInfo: GraphQLResolveInfo;
}) => FieldNode;
export type DataSource<TContext> = ApolloDataSource<TContext> & {
    query: (query: DocumentNode, options?: Omit<GraphQLRequest, 'query'>) => Promise<FetchResult>;
    mutation: (mutation: DocumentNode, options?: Omit<GraphQLRequest, 'query'>) => Promise<FetchResult>;
};
export interface Options<TContext = any> {
    dataSource: {
        name: string;
        factory: (dataSources: {
            [name: string]: ApolloDataSource;
        }) => DataSource<TContext>;
    };
    postQuery?: {
        [field: string]: PostOperationFn<unknown, TContext>;
    };
    postMutation?: {
        [field: string]: PostOperationFn<unknown, TContext>;
    };
    defaultPostQuery?: PostOperationFn<unknown, TContext>;
    defaultPostMutation?: PostOperationFn<unknown, TContext>;
    remapRules?: Partial<Record<string, RemapRule>>;
}