import type { Address, Hash, WalletClient } from 'viem';
import type { TransactionRequest, WalletProvider } from '../types.js';
/**
 * Private Key Wallet Provider
 * Uses a private key from environment variables
 */
export declare class PrivateKeyWalletProvider implements WalletProvider {
    private privateKey;
    constructor();
    isAvailable(): boolean;
    getAddress(): Promise<Address>;
    signTransaction(_tx: TransactionRequest): Promise<Hash>;
    getWalletClient(network: string): Promise<WalletClient>;
    getName(): string;
}