import { Metadata } from '@grpc/grpc-js';
import { HttpMapping } from './types.js';
export interface DiscoveredAction {
    name: string;
    grpcMethod: string;
    sessionType: string;
    requestSchema: object;
    responseSchema: object;
    requestTypeName?: string;
    responseTypeName?: string;
    httpMapping?: HttpMapping;
    description?: string;
    deprecated?: boolean;
    requestStream?: boolean;
    responseStream?: boolean;
}
export interface DiscoveredSchema {
    serviceName: string;
    version: string;
    actions: DiscoveredAction[];
    definitions: Record<string, object>;
}
export declare class SchemaReflectionClient {
    private readonly serviceDefinition;
    private readonly clients;
    constructor();
    fetchSchema(address: string, metadata?: Metadata): Promise<DiscoveredSchema | null>;
    close(): void;
    private loadServiceDefinition;
    private getOrCreateClient;
    private callGetSchemas;
    private transformResponse;
    private parseJsonSafe;
}