import { Observable } from 'rxjs';
import { NgZone } from '@angular/core';
import type { OperationVariables } from '@apollo/client';
import { ApolloClient } from '@apollo/client';
import { QueryRef } from './query-ref';
import type { EmptyObject, Flags, NamedOptions } from './types';
import * as i0 from "@angular/core";
export declare namespace Apollo {
    type WatchQueryOptions<TData = unknown, TVariables extends OperationVariables = EmptyObject> = ApolloClient.WatchQueryOptions<TData, TVariables>;
    type QueryOptions<TData = unknown, TVariables extends OperationVariables = EmptyObject> = ApolloClient.QueryOptions<TData, TVariables>;
    type QueryResult<TData = unknown> = ApolloClient.QueryResult<TData>;
    type MutateOptions<TData = unknown, TVariables extends OperationVariables = EmptyObject> = ApolloClient.MutateOptions<TData, TVariables> & {
        /**
         * Observable starts with `{ loading: true }`.
         *
         * Disabled by default
         */
        useMutationLoading?: boolean;
    };
    type MutateResult<TData = unknown> = ApolloClient.MutateResult<TData> & {
        loading?: boolean;
    };
    type SubscribeOptions<TData = unknown, TVariables extends OperationVariables = EmptyObject> = ApolloClient.SubscribeOptions<TData, TVariables> & {
        useZone?: boolean;
    };
    type SubscribeResult<TData = unknown> = ApolloClient.SubscribeResult<TData>;
    interface WatchFragmentOptions<TData = unknown, TVariables extends OperationVariables = EmptyObject> extends ApolloClient.WatchFragmentOptions<TData, TVariables> {
        useZone?: boolean;
    }
    type WatchFragmentResult<TData = unknown> = ApolloClient.WatchFragmentResult<TData>;
}
export declare class ApolloBase {
    protected readonly ngZone: NgZone;
    protected readonly flags?: Flags;
    protected _client?: ApolloClient;
    private useMutationLoading;
    constructor(ngZone: NgZone, flags?: Flags, _client?: ApolloClient);
    watchQuery<TData, TVariables extends OperationVariables = EmptyObject>(options: Apollo.WatchQueryOptions<TData, TVariables>): QueryRef<TData, TVariables>;
    query<TData, TVariables extends OperationVariables = EmptyObject>(options: Apollo.QueryOptions<TData, TVariables>): Observable<Apollo.QueryResult<TData>>;
    mutate<TData, TVariables extends OperationVariables = EmptyObject>(options: Apollo.MutateOptions<TData, TVariables>): Observable<Apollo.MutateResult<TData>>;
    watchFragment<TFragmentData = unknown, TVariables extends OperationVariables = EmptyObject>(options: Apollo.WatchFragmentOptions<TFragmentData, TVariables>): Observable<Apollo.WatchFragmentResult<TFragmentData>>;
    subscribe<TData, TVariables extends OperationVariables = EmptyObject>(options: Apollo.SubscribeOptions<TData, TVariables>): Observable<Apollo.SubscribeResult<TData>>;
    /**
     * Get an instance of ApolloClient
     */
    get client(): ApolloClient;
    /**
     * Set a new instance of ApolloClient
     * Remember to clean up the store before setting a new client.
     *
     * @param client ApolloClient instance
     */
    set client(client: ApolloClient);
    private ensureClient;
    private checkInstance;
}
export declare class Apollo extends ApolloBase {
    private map;
    constructor(ngZone: NgZone, apolloOptions?: ApolloClient.Options, apolloNamedOptions?: NamedOptions, flags?: Flags);
    /**
     * Create an instance of ApolloClient
     * @param options Options required to create ApolloClient
     * @param name client's name
     */
    create(options: ApolloClient.Options, name?: string): void;
    /**
     * Use a default ApolloClient
     */
    default(): ApolloBase;
    /**
     * Use a named ApolloClient
     * @param name client's name
     */
    use(name: string): ApolloBase;
    /**
     * Create a default ApolloClient, same as `apollo.create(options)`
     * @param options ApolloClient's options
     */
    createDefault(options: ApolloClient.Options): void;
    /**
     * Create a named ApolloClient, same as `apollo.create(options, name)`
     * @param name client's name
     * @param options ApolloClient's options
     */
    createNamed(name: string, options: ApolloClient.Options): void;
    /**
     * Remember to clean up the store before removing a client
     * @param name client's name
     */
    removeClient(name?: string): void;
    static ɵfac: i0.ɵɵFactoryDeclaration<Apollo, [null, { optional: true; }, { optional: true; }, { optional: true; }]>;
    static ɵprov: i0.ɵɵInjectableDeclaration<Apollo>;
}