• git
• Nodejs
• Yarn instead of npm

git clone [email protected]:Nedick/hardhat-fund-me.git
cd hardhat-fund-me-fcc
yarn

Deploy:

yarn hardhat deploy

yarn hardhat test

yarn hardhat coverage

1. Setup environment variabltes

You'll want to set your RINKEBY_RPC_URL and PRIVATE_KEY as environment variables. You can add them to a .env file, similar to what you see in .env.example.

• PRIVATE_KEY: The private key of your account (like from metamask). NOTE: FOR DEVELOPMENT, PLEASE USE A KEY THAT DOESN'T HAVE ANY REAL FUNDS ASSOCIATED WITH IT.
  • You can learn how to export it here.
• RINKEBY_RPC_URL: This is url of the rinkeby testnet node you're working with. You can get setup with one for free from Alchemy

2. Get testnet ETH

Head over to faucets.chain.link and get some tesnet ETH. You should see the ETH show up in your metamask.

3. Deploy

yarn hardhat deploy --network rinkeby

After deploy to a testnet or local net, you can run the scripts.

yarn hardhat run scripts/fund.js

or

yarn hardhat run scripts/withdraw.js

You can estimate how much gas things cost by running:

yarn hardhat test

And you'll see and output file called gas-report.txt

To get a USD estimation of gas cost, you'll need a COINMARKETCAP_API_KEY environment variable. You can get one for free from CoinMarketCap.

Just note, everytime you run your tests it will use an API call, so it might make sense to have using coinmarketcap disabled until you need it. You can disable it by just commenting the line back out.

If you deploy to a testnet or mainnet, you can verify it if you get an API Key from Etherscan and set it as an environemnt variable named ETHERSCAN_API_KEY. You can pop it into your .env file as seen in the .env.example.

In it's current state, if you have your api key set, it will auto verify rinkeby contracts!

To check linting / code formatting:

yarn lint

or, to fix:

yarn lint:fix

yarn format