import type { GatewayPlugin } from '../types';
interface FromClientToSubgraphsPayload {
    request: Request;
    subgraphName: string;
}
interface FromSubgraphsToClientPayload {
    response: Response;
    subgraphName: string;
}
export interface PropagateHeadersOpts {
    fromClientToSubgraphs?: (payload: FromClientToSubgraphsPayload) => Record<string, string> | void | Promise<Record<string, string | null | undefined> | void>;
    fromSubgraphsToClient?: (payload: FromSubgraphsToClientPayload) => Record<string, string> | void | Promise<Record<string, string | null | undefined> | void>;
}
export declare function usePropagateHeaders<TContext>(opts: PropagateHeadersOpts): GatewayPlugin<TContext>;
export {};