/// <reference types="node" />
import { Keypair } from '@solana/web3.js';
import { Connection, PublicKey, Transaction, TransactionInstruction, Commitment } from '@solana/web3.js';
/**
 * Creates a Solana connection object
 * @param rpcUrl The RPC URL to connect to
 * @param commitment The commitment level
 * @returns A new Connection instance
 */
export declare function createConnection(rpcUrl: string, commitment?: Commitment): Connection;
interface RetryOptions {
    maxAttempts?: number;
    initialDelay?: number;
    maxDelay?: number;
    factor?: number;
    jitter?: boolean;
    retryableErrors?: Array<string | RegExp>;
}
/**
 * Utility function to retry operations with exponential backoff
 * @param operation Function to retry
 * @param options Retry configuration options
 * @returns Promise resolving to the operation result
 */
export declare function withRetry<T>(operation: () => Promise<T>, options?: RetryOptions): Promise<T>;
/**
 * Creates a keypair from a private key string
 * @param key Base58-encoded private key
 * @returns Solana Keypair
 */
export declare function getKeyPairFromPrivateKey(key: string): Promise<Keypair>;
/**
 * Gets a cached blockhash or fetches a new one if cache is expired
 * @param connection Solana connection
 * @returns Promise resolving to blockhash string
 */
export declare function getCachedBlockhash(connection: Connection): Promise<string>;
/**
 * Creates a transaction with instructions and priority fee
 * @param connection Solana connection
 * @param instructions Transaction instructions
 * @param payer Payer public key
 * @param priorityFeeInSol Optional priority fee in SOL
 * @returns Promise resolving to Transaction
 */
export declare function createTransaction(connection: Connection, instructions: TransactionInstruction[], payer: PublicKey, priorityFeeInSol?: number): Promise<Transaction>;
/**
 * Wrapper for sending and confirming transactions with retry logic
 * @param connection Solana connection
 * @param transaction Transaction to send
 * @param signers Array of signers
 * @returns Promise resolving to transaction signature
 */
export declare function sendAndConfirmTransactionWrapper(connection: Connection, transaction: Transaction, signers: Keypair[]): Promise<string>;
/**
 * Safely converts a number or string to a Buffer
 * @param value Number or string to convert to Buffer
 * @returns Buffer containing the BigInt representation
 */
export declare function bufferFromUInt64(value: number | string): Buffer;
/**
 * Validates a Solana public key string
 * @param publicKeyString Public key string to validate
 * @returns Boolean indicating if the key is valid
 */
export declare function isValidPublicKey(publicKeyString: string): boolean;
/**
 * Tracks a transaction until it reaches finality
 * @param connection Solana connection
 * @param signature Transaction signature
 * @param timeoutMs Optional timeout in milliseconds
 * @returns Promise resolving to confirmed transaction details
 */
export declare function trackTransaction(connection: Connection, signature: string, timeoutMs?: number): Promise<any>;
export {};