import { ApolloCache, MissingFieldError, OperationVariables as Variables } from '@apollo/client/core';
import { Observable } from 'rxjs';
import { PureQueryOptions } from './types';
export interface CacheWatchQueryOptions<T, V> extends PureQueryOptions<T, V> {
    optimistic?: boolean;
    immediate?: boolean;
    /**
     * If set to true, the observable will emit the partial data that is available in the cache.
     * If set to false, the observable will throw an error if the complete data is not available in the cache.
     * @default false
     */
    returnPartialData?: boolean;
}
export interface CacheWatchQueryResult<T> {
    data: T;
    complete?: boolean;
    missing?: Array<MissingFieldError>;
    fromOptimisticTransaction?: boolean;
}
export interface ApolloCacheEx<TCacheShape> extends ApolloCache<TCacheShape> {
    /**
     * Watches the cache store for the query document provided.
     */
    watchQuery<T = any, V extends Variables = Variables>(options: CacheWatchQueryOptions<T, V> & {
        returnPartialData?: false;
    }): Observable<CacheWatchQueryResult<T>>;
    watchQuery<T = any, V extends Variables = Variables>(options: CacheWatchQueryOptions<T, V> & {
        returnPartialData: true;
    }): Observable<CacheWatchQueryResult<T | undefined>>;
    watchQuery<T = any, V extends Variables = Variables>(options: CacheWatchQueryOptions<T, V> & {
        returnPartialData: boolean;
    }): Observable<CacheWatchQueryResult<T>>;
}
export declare function extendCache<TCacheShape>(cache: ApolloCache<TCacheShape>): ApolloCacheEx<TCacheShape>;