import type { BackendFederationRuntimeOptions } from './types.js';
type HostShared = NonNullable<BackendFederationRuntimeOptions['shared']>;
/**
 * Shares the package-private Effect handler factory registry and the Effect
 * request storage with every backend container, so factories a remote creates
 * with defineEffectBff are recognized by this host's module resolver and its
 * endpoints read the context this host's dispatcher enters.
 *
 * Loaded on first call, not when this module loads: a CommonJS require() of
 * the Effect ES modules throws while a concurrent import() is still loading
 * them.
 */
export declare function effectBffHostShared(): HostShared;
/**
 * Adds the host shares to caller shares. Their names are reserved: a caller
 * replacement would make containers use a registry or a request storage this
 * host never consults.
 */
export declare function withEffectBffHostShared(shared: BackendFederationRuntimeOptions['shared']): HostShared;
export {};