/**
 * IoTeX Node.js SDK
 * Comprehensive npm package for interacting with the IoTeX blockchain
 */
import { GrpcClient } from './client/grpc-client';
import { Account } from './account/account';
import { NodeDelegate } from './node/delegate';
import { Stake2 } from './stake/stake2';
import { Blockchain } from './blockchain/queries';
import { SDKConfig } from './types';
export declare class IoTeXSDK {
    private grpcClient;
    account: Account;
    node: NodeDelegate;
    stake: Stake2;
    blockchain: Blockchain;
    constructor(config?: SDKConfig);
    /**
     * Connect to the IoTeX blockchain
     */
    connect(): Promise<void>;
    /**
     * Disconnect from the IoTeX blockchain
     */
    disconnect(): void;
    /**
     * Test connection by getting chain metadata
     */
    isConnected(): Promise<boolean>;
    /**
     * Get the underlying gRPC client
     */
    getClient(): GrpcClient;
    /**
     * Create SDK instance for testnet
     */
    static testnet(config?: Partial<SDKConfig>): IoTeXSDK;
    /**
     * Create SDK instance for mainnet
     */
    static mainnet(config?: Partial<SDKConfig>): IoTeXSDK;
    /**
     * Create SDK instance for local node
     */
    static localhost(config?: Partial<SDKConfig>): IoTeXSDK;
}
export { iotxToRau, rauToIotx, rauToQev, qevToRau, parseDuration, formatDuration } from './utils/conversion';
export { IoTeXError, handleGrpcError } from './utils/errors';
export { isValidIoAddress, isValidEthAddress, isValidAddress, isValidBLSPubKey, isValidAmount, isValidDuration, isValidCandidateName, isValidPrivateKey, } from './utils/validation';
export { generateKeyPair, getPublicKey, getAddress, getEthAddress, toEthAddress, toIoAddress, signMessage, verifyMessage, hashSHA256, hashKeccak256, } from './account/crypto';
export * from './types';
export { GrpcClient } from './client/grpc-client';
export { Account } from './account/account';
export { Keystore } from './account/keystore';
export { HDWallet } from './account/hdwallet';
export { NodeDelegate } from './node/delegate';
export { Stake2 } from './stake/stake2';
export { Blockchain } from './blockchain/queries';
export default IoTeXSDK;
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