import type { WorkflowRpcProvider } from '../protocols/workflows/types.js';
export declare class ViemRpcProvider implements WorkflowRpcProvider {
    private clients;
    private pending;
    private rpcUrl?;
    private nativeCurrencyOverrides;
    constructor(options?: {
        rpcUrl?: string;
        nativeCurrencyOverrides?: Record<number, string>;
    });
    private getClient;
    private initClient;
    getBalance(chainId: number, address: `0x${string}`): Promise<bigint>;
    getErc20Balance(chainId: number, token: `0x${string}`, owner: `0x${string}`): Promise<bigint>;
    getTransactionCount(chainId: number, address: `0x${string}`): Promise<number>;
    estimateGas(chainId: number, tx: {
        from: `0x${string}`;
        to: `0x${string}`;
        value?: bigint;
        data?: `0x${string}`;
    }): Promise<bigint>;
    getGasPrice(chainId: number): Promise<bigint>;
    estimateFeesPerGas(chainId: number): Promise<{
        maxFeePerGas: bigint;
        maxPriorityFeePerGas: bigint;
    }>;
    getNativeCurrencySymbol(chainId: number): string;
    sendRawTransaction(chainId: number, signedTx: `0x${string}`): Promise<`0x${string}`>;
}