addressIsContract.ts

import { ethers } from "ethers";
import * as dotenv from "dotenv";
dotenv.config();

async function main() {
  const API_KEY = process.env.API_KEY;
  if (!API_KEY) {
    console.log("No api key");
    return;
  }

  const list = [
  ];
  const provider = new ethers.providers.AlchemyProvider("rinkeby");

  let contractAddresses = [""];
  list.map(async (address) => {
    const isCode = await provider.getCode(address);
    const val = isCode.length > 2 ? address : "No Contract";
    console.log("val", val);
    if (val == "No Contract") {
      contractAddresses.push(address);
    }
  });

  console.log("contractAddresses", contractAddresses);
}

main()
  .then(async () => {})
  .catch(async (e) => {
    console.error(e);
    process.exit(1);
  });