const Checker = require("block-checker");
const web3 = require("web3");

const httpProvider = new web3.providers.HttpProvider(
  "https://bsc-dataseed3.binance.org/"
);

const HttpsWeb3 = new web3(httpProvider);

const check = new Checker(HttpsWeb3, 1000);
check.start();

check.on("latest", (blockNumber) => console.log("latest", blockNumber));
check.on("sync", ([prev, current]) => console.log("sync", { prev, current }));
check.on("run", (timestamp) =>  console.log("Run", timestamp));
check.on("error", (error) =>  console.log("error", error));

const delayBlock = 10;
const check = new Checker(HttpsWeb3, 1000, delayBlock);