Use Lasso with viem or ethers on Base

import { createPublicClient, http } from "viem";
import { base } from "viem/chains";

const url = process.env.LASSO_RPC_URL;
if (!url) throw new Error("LASSO_RPC_URL is required");

const client = createPublicClient({
  chain: base,
  transport: http(url),
});

if ((await client.getChainId()) !== base.id) {
  throw new Error("Unexpected RPC chain");
}
const blockNumber = await client.getBlockNumber();
console.log({ blockNumber: blockNumber.toString() });

import { JsonRpcProvider } from "ethers";

const url = process.env.LASSO_RPC_URL;
if (!url) throw new Error("LASSO_RPC_URL is required");

const provider = new JsonRpcProvider(url, undefined, {
  batchMaxCount: 1,
  polling: true,
});

try {
  if ((await provider.getNetwork()).chainId !== 8453n) {
    throw new Error("Unexpected RPC chain");
  }
  console.log({ blockNumber: await provider.getBlockNumber() });
} finally {
  provider.destroy();
}