import type { ChannelCredentials } from '@grpc/grpc-js';
type DescriptorExtensionProto = string[] | {
    includeProtoRoots: string[];
    filenames: string[];
};
/**
 * @param actionEndpoint
 * @param protoKey
 * @param credentials
 * @param grpcOptions
 * @param descriptorExtensionProto
 * @returns Promise<protobufjs.Root>.
 * use toDescriptor for use with protoLoader.
 * use toJSON for get a JSON descriptor.
 */
export declare function getCachedReflectionRoot(actionEndpoint: string, protoKey: string, credentials: ChannelCredentials, grpcOptions?: object, descriptorExtensionProto?: DescriptorExtensionProto): Promise<any>;
/**
 * @param actionEndpoint
 * @param protoKey
 * @param credentials
 * @param grpcOptions
 * @param addToCache
 * @returns Promise<protobufjs.Root>.
 * use toDescriptor for use with protoLoader.
 * use toJSON for get a JSON descriptor.
 */
export declare function getReflectionRoot(actionEndpoint: string, protoKey: string, credentials: ChannelCredentials, grpcOptions?: object, addToCache?: boolean): Promise<any>;
export {};