import type { TypePolicies } from '@apollo/client/core';
import type { Policies } from '@apollo/client/cache/inmemory/policies';
import type { Constructor } from '@apollo-elements/core/types';
import type { ApolloElementElement } from '@apollo-elements/core/types';
declare module '@apollo/client/cache' {
    interface ApolloCache<TSerialized> {
        policies: Policies;
    }
}
/**
 * Lazily adds [`TypePolicies`](https://www.apollographql.com/docs/react/caching/cache-configuration/#typepolicy-fields)
 * to the Apollo client when the element connects to the DOM,
 * from the element's `typePolicies` instance property.
 */
declare function TypePoliciesMixinImpl<B extends Constructor<ApolloElementElement>>(superclass: B): B & Constructor<{
    typePolicies?: TypePolicies;
}>;
export declare const TypePoliciesMixin: typeof TypePoliciesMixinImpl;
export {};