import { ApolloLink, Observable } from "@apollo/client";
import type { OperationVariables } from "@apollo/client";
import type { FormattedExecutionResult } from "graphql";
import type { ManifestOperation } from "../types/application-manifest.js";
/**
 * @internal
 * Holds requests until the client is fully hydrated after a tool call. It is
 * particularly useful for `network-only` and `cache-and-network` fetch policies
 * where the request makes it to the link chain because it prevents a followup
 * tool call to the MCP server for the just fetched data from the MCP server.
 */
export declare class ToolHydrationLink extends ApolloLink {
    #private;
    hydrate(operation: ManifestOperation, { result, variables, }: {
        result: FormattedExecutionResult;
        variables: OperationVariables;
    }): void;
    complete(): void;
    request(operation: ApolloLink.Operation, forward: ApolloLink.ForwardFunction): Observable<ApolloLink.Result>;
}
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