import type { MeshFetchRequestInit, OnFetchHook } from '@graphql-mesh/types';
export interface OperationHeadersFactoryPayload<TContext> {
    context: TContext;
    url: string;
    options: MeshFetchRequestInit;
}
export type OperationHeadersFactory<TContext = any> = (payload: OperationHeadersFactoryPayload<TContext>) => Promise<Record<string, string>> | Record<string, string>;
export declare function useOperationHeaders<TContext>(factoryFn: OperationHeadersFactory<TContext>): {
    onFetch: OnFetchHook<TContext>;
};