import { type Store } from "effector";
import type { ApolloClient, Unmasked } from "@apollo/client";
import type { Mutation } from "./mutation.js";
interface OptimisticOptions<Data, Variables> {
    client?: ApolloClient<unknown> | Store<ApolloClient<unknown>>;
    fn: (variables: Variables) => Unmasked<Data>;
}
export declare function optimistic<Data, Variables>(mutation: Mutation<Data, Variables>, { client, fn }: OptimisticOptions<Data, Variables>): void;
export {};