export interface ApolloFetch {
    (operation: GraphQLRequest): Promise<FetchResult>;
    (operation: GraphQLRequest[]): Promise<FetchResult[]>;
    use: (middlewares: MiddlewareInterface) => ApolloFetch;
    useAfter: (afterwares: AfterwareInterface) => ApolloFetch;
    batchUse: (middlewares: BatchMiddlewareInterface) => ApolloFetch;
    batchUseAfter: (afterwares: BatchAfterwareInterface) => ApolloFetch;
}
export interface GraphQLRequest {
    query?: string;
    variables?: object;
    operationName?: string;
}
export interface FetchResult {
    data: any;
    errors?: any;
    extensions?: any;
}
export declare type MiddlewareInterface = (request: RequestAndOptions, next: Function) => void;
export declare type BatchMiddlewareInterface = (requests: RequestsAndOptions, next: Function) => void;
export interface RequestAndOptions {
    request: GraphQLRequest;
    options: RequestInit;
}
export interface RequestsAndOptions {
    requests: GraphQLRequest[];
    options: RequestInit;
}
export declare type AfterwareInterface = (response: ResponseAndOptions, next: Function) => void;
export declare type BatchAfterwareInterface = (response: ResponseAndOptions, next: Function) => void;
export interface ResponseAndOptions {
    response: ParsedResponse;
    options: RequestInit;
}
export interface ParsedResponse extends Response {
    raw: string;
    parsed?: any;
}
export interface FetchOptions {
    uri?: string;
    customFetch?: (request: RequestInfo, init: RequestInit) => Promise<Response>;
    constructOptions?: (requestOrRequests: GraphQLRequest | GraphQLRequest[], options: RequestInit) => RequestInit;
}
export interface FetchError extends Error {
    response: ParsedResponse;
    parseError?: Error;
}
export interface BatchError extends Error {
    response: ParsedResponse;
}