/**
 * gRPC client for IoTeX blockchain
 */
import * as grpc from '@grpc/grpc-js';
import { GrpcConfig } from './config';
type APIServiceClient = any;
export declare class GrpcClient {
    private config;
    private client;
    private metadata;
    constructor(config?: Partial<GrpcConfig>);
    /**
     * Connect to the gRPC server
     */
    connect(): Promise<void>;
    /**
     * Test the connection by getting chain metadata
     */
    private testConnection;
    /**
     * Close the connection
     */
    close(): void;
    /**
     * Get the API service client
     */
    getAPIServiceClient(): APIServiceClient;
    /**
     * Add JWT authentication
     */
    withAuth(jwtToken: string): void;
    /**
     * Get metadata for requests
     */
    getMetadata(): grpc.Metadata;
    /**
     * Get deadline for requests
     */
    getDeadline(): Date;
    /**
     * Generic RPC call wrapper with error handling
     */
    call<TRequest, TResponse>(method: string, request: TRequest): Promise<TResponse>;
    /**
     * GetAccount RPC call
     */
    getAccount(address: string): Promise<any>;
    /**
     * GetChainMeta RPC call
     */
    getChainMeta(): Promise<any>;
    /**
     * GetEpochMeta RPC call
     */
    getEpochMeta(epochNumber?: number): Promise<any>;
    /**
     * GetBlockMetas RPC call
     */
    getBlockMetas(request: any): Promise<any>;
    /**
     * SendAction RPC call
     */
    sendAction(action: any): Promise<any>;
    /**
     * ReadState RPC call
     */
    readState(request: any): Promise<any>;
    /**
     * SuggestGasPrice RPC call
     */
    suggestGasPrice(): Promise<any>;
    /**
     * EstimateActionGasConsumption RPC call
     */
    estimateActionGasConsumption(action: any): Promise<any>;
    /**
     * GetReceiptByAction RPC call
     */
    getReceiptByAction(actionHash: string): Promise<any>;
    /**
     * GetActions RPC call
     */
    getActions(request: any): Promise<any>;
    /**
     * GetServerMeta RPC call
     */
    getServerMeta(): Promise<any>;
    /**
     * GetRawBlocks RPC call
     */
    getRawBlocks(request: any): Promise<any>;
    /**
     * ReadStakingData RPC call
     */
    readStakingData(request: any): Promise<any>;
}
export {};
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