Sample Hardhat Project for Klaytn(KIP7, Upgradeable contract, Kaikas wallet)

This project demonstrates a basic Hardhat use case for Klaytn network. It comes with a sample contract, a test for that contract, and a script that deploys that contract.

Plus, there is a simple frontend project which shows how to use Kaikas wallet API and connect Kaikas wallet. The project was created by next.js

Deploy contract

Try running some of the following tasks:

npx hardhat help # for hardhat options
npx hardhat test # test contracts
REPORT_GAS=true npx hardhat test # test contracts and monitor gas fee
npx hardhat node # operate hardhat network(local blockchain net)
npx hardhat run scripts/deploy.ts --network localhost # deploy FsKlay token(upgradeable contract)

Upgrade contract

check out scripts/upgrade.ts.

import { ethers, upgrades } from "hardhat";

async function main() {
  const [deployer] = await ethers.getSigners();
  console.log(
    "Deploying the contracts with the account:",
    await deployer.getAddress()
  );
  console.log("Account balance:", (await deployer.getBalance()).toString());

  const FsKlayFactoryV2 = await ethers.getContractFactory("FsKlayV2");
  console.log("Upgrading FsKlayV2...");
  await upgrades.upgradeProxy(
    "Address_of_previous_deployed_contract", // ex) 0xABcA2D7d71A7C8143b6b113B608997416c398123
    FsKlayFactoryV2
  );
  console.log("FsKlay upgraded");
}

main().catch((error) => {
  console.error(error);
  process.exitCode = 1;
});

and run scripts/upgrade.ts

npx hardhat run scripts/upgrade.ts --network [localhost | baobab]

Check how to connect Kaikas wallet in Chrome

It assumes that user has aleady installed the kaikas extension

cd frontend
yarn dev

To see more info about kaikas API, check the docs.

Here is more detailed tutorial

Note : This tutorial has been archived. Instead, this repository shows how to connect a kaikas provider with @klaytn/kaikas-web3-provider