npm init npm install --save-dev hardhat npx hardhat init npm install @openzeppelin/contracts npm install --save-dev @nomicfoundation/
npx create-react-app my-app cd my-app npm start
npm install ethers npm install @web3-react/core npm install @web3-react/injected-connector npm install --save-dev @babel/plugin-proposal-private-property-in-object
기존 await token.deployed(); -> await token.waitForDeployment(); 기존 token.address -> token.target