Migrate to foundry

.github/workflows/lint.yaml

@@ -30,14 +30,18 @@ jobs:
       - name: Install dependencies
         run: yarn install --immutable
 
-      - name: Run hardhat node, deploy contracts (& generate contracts typescript output)
+      - name: Install foundry-toolchain
+        uses: foundry-rs/foundry-toolchain@v1
+        with:
+          version: nightly
+
+      - name: Run foundry node, deploy contracts (& generate contracts typescript output)
+        env:
+          ETHERSCAN_API_KEY: ${{ secrets.ETHERSCAN_API_KEY }}
         run: yarn chain & yarn deploy
 
       - name: Run nextjs lint
         run: yarn next:lint --max-warnings=0
 
       - name: Check typings on nextjs
         run: yarn next:check-types
-
-      - name: Run hardhat lint
-        run: yarn hardhat:lint --max-warnings=0

.gitmodules

@@ -0,0 +1,9 @@
+[submodule "packages/foundry/lib/forge-std"]
+	path = packages/foundry/lib/forge-std
+	url = https://github.com/foundry-rs/forge-std
+[submodule "packages/foundry/lib/openzeppelin-contracts"]
+	path = packages/foundry/lib/openzeppelin-contracts
+	url = https://github.com/OpenZeppelin/openzeppelin-contracts
+[submodule "packages/foundry/lib/solidity-bytes-utils"]
+	path = packages/foundry/lib/solidity-bytes-utils
+	url = https://github.com/gnsps/solidity-bytes-utils

.lintstagedrc.js

@@ -7,15 +7,11 @@ const buildNextEslintCommand = (filenames) =>
 
 const checkTypesNextCommand = () => "yarn next:check-types";
 
-const buildHardhatEslintCommand = (filenames) =>
-  `yarn hardhat:lint-staged --fix ${filenames
-    .map((f) => path.relative(path.join("packages", "hardhat"), f))
-    .join(" ")}`;
-
 module.exports = {
   "packages/nextjs/**/*.{ts,tsx}": [
     buildNextEslintCommand,
     checkTypesNextCommand,
   ],
-  "packages/hardhat/**/*.{ts,tsx}": [buildHardhatEslintCommand],
+  "packages/foundry/**/*.sol": ["forge fmt --root packages/foundry"],
+  "packages/foundry/**/*.js": ["yarn workspace @se-2/foundry prettier --write"],
 };

README.md

@@ -7,7 +7,7 @@
 
 🧪 An open-source, up-to-date toolkit for building decentralized applications (dapps) on the Ethereum blockchain. It's designed to make it easier for developers to create and deploy smart contracts and build user interfaces that interact with those contracts.
 
-⚙️ Built using NextJS, RainbowKit, Hardhat, Wagmi, Viem, and Typescript.
+⚙️ Built using NextJS, RainbowKit, Foundry, Wagmi, Viem, and Typescript.
 
 - ✅ **Contract Hot Reload**: Your frontend auto-adapts to your smart contract as you edit it.
 - 🪝 **[Custom hooks](https://docs.scaffoldeth.io/hooks/)**: Collection of React hooks wrapper around [wagmi](https://wagmi.sh/) to simplify interactions with smart contracts with typescript autocompletion.
@@ -24,6 +24,7 @@ Before you begin, you need to install the following tools:
 - [Node (>= v18.17)](https://nodejs.org/en/download/)
 - Yarn ([v1](https://classic.yarnpkg.com/en/docs/install/) or [v2+](https://yarnpkg.com/getting-started/install))
 - [Git](https://git-scm.com/downloads)
+- [Foundryup](https://book.getfoundry.sh/getting-started/installation)
 
 ## Quickstart
 
@@ -34,7 +35,7 @@ To get started with Scaffold-ETH 2, follow the steps below:
 ```
 git clone https://github.com/scaffold-eth/scaffold-eth-2.git
 cd scaffold-eth-2
-yarn install
+yarn install && forge install --root packages/foundry
 ```
 
 2. Run a local network in the first terminal:
@@ -43,15 +44,15 @@ yarn install
 yarn chain
 ```
 
-This command starts a local Ethereum network using Hardhat. The network runs on your local machine and can be used for testing and development. You can customize the network configuration in `hardhat.config.ts`.
+This command starts a local Ethereum network using anvil. The network runs on your local machine and can be used for testing and development. You can customize the network configuration in `packages/foundry/foundry.toml`.
 
 3. On a second terminal, deploy the test contract:
 
 ```
 yarn deploy
 ```
 
-This command deploys a test smart contract to the local network. The contract is located in `packages/hardhat/contracts` and can be modified to suit your needs. The `yarn deploy` command uses the deploy script located in `packages/hardhat/deploy` to deploy the contract to the network. You can also customize the deploy script.
+This command deploys a test smart contract to the local network. The contract is located in `packages/foundry/contracts` and can be modified to suit your needs. The `yarn deploy` command uses the deploy script located in `packages/foundry/script/Deploy.s.sol` to deploy the contract to the network. You can also customize the deploy script.
 
 4. On a third terminal, start your NextJS app:
 
@@ -63,10 +64,10 @@ Visit your app on: `http://localhost:3000`. You can interact with your smart con
 
 **What's next**:
 
-- Edit your smart contract `YourContract.sol` in `packages/hardhat/contracts`
+- Edit your smart contract `YourContract.sol` in `packages/foundry/contracts`
 - Edit your frontend homepage at `packages/nextjs/app/page.tsx`. For guidance on [routing](https://nextjs.org/docs/app/building-your-application/routing/defining-routes) and configuring [pages/layouts](https://nextjs.org/docs/app/building-your-application/routing/pages-and-layouts) checkout the Next.js documentation.
-- Edit your deployment scripts in `packages/hardhat/deploy`
-- Edit your smart contract test in: `packages/hardhat/test`. To run test use `yarn hardhat:test`
+- Edit your deployment scripts in `packages/script/deploy/Deploy.s.sol`
+- Edit your smart contract test in: `packages/foundry/test`. To run test use `yarn foundry:test`
 
 ## Documentation
 

package.json

@@ -4,26 +4,25 @@
   "private": true,
   "workspaces": {
     "packages": [
-      "packages/hardhat",
+      "packages/foundry",
       "packages/nextjs"
     ]
   },
   "scripts": {
-    "account": "yarn workspace @se-2/hardhat account",
-    "chain": "yarn workspace @se-2/hardhat chain",
-    "fork": "yarn workspace @se-2/hardhat fork",
-    "deploy": "yarn workspace @se-2/hardhat deploy",
-    "verify": "yarn workspace @se-2/hardhat verify",
-    "hardhat-verify": "yarn workspace @se-2/hardhat hardhat-verify",
-    "compile": "yarn workspace @se-2/hardhat compile",
-    "generate": "yarn workspace @se-2/hardhat generate",
-    "flatten": "yarn workspace @se-2/hardhat flatten",
-    "hardhat:lint": "yarn workspace @se-2/hardhat lint",
-    "hardhat:lint-staged": "yarn workspace @se-2/hardhat lint-staged",
-    "hardhat:format": "yarn workspace @se-2/hardhat format",
-    "hardhat:test": "yarn workspace @se-2/hardhat test",
-    "test": "yarn hardhat:test",
-    "format": "yarn next:format && yarn hardhat:format",
+    "account": "yarn workspace @se-2/foundry account",
+    "chain": "yarn workspace @se-2/foundry chain",
+    "fork": "yarn workspace @se-2/foundry fork",
+    "deploy": "yarn workspace @se-2/foundry deploy",
+    "verify": "yarn workspace @se-2/foundry verify",
+    "deploy:verify": "yarn workspace @se-2/foundry deploy:verify",
+    "compile": "yarn workspace @se-2/foundry compile",
+    "generate": "yarn workspace @se-2/foundry generate",
+    "flatten": "yarn workspace @se-2/foundry flatten",
+    "foundry:format": "yarn workspace @se-2/foundry format",
+    "foundry:lint": "yarn workspace @se-2/foundry lint",
+    "foundry:test": "yarn workspace @se-2/foundry test",
+    "test": "yarn foundry:test",
+    "format": "yarn next:format && yarn foundry:format",
     "start": "yarn workspace @se-2/nextjs dev",
     "next:lint": "yarn workspace @se-2/nextjs lint",
     "next:format": "yarn workspace @se-2/nextjs format",

packages/foundry/.env.example

@@ -0,0 +1,21 @@
+# Template for foundry environment variables.
+
+# For local development, copy this file, rename it to .env, and fill in the values.
+
+# We provide default values so developers can start prototyping out of the box,
+# but we recommend getting your own API Keys for Production Apps.
+
+# DEPLOYER_PRIVATE_KEY is used while deploying contract.
+# On anvil chain the value of it can be empty since we use the prefunded account
+# which comes with anvil chain to deploy contract.
+# NOTE: You don't need to manually change the value of DEPLOYER_PRIVATE_KEY, it should
+# be auto filled when run `yarn generate`.
+# Although `.env` is ignored by git, it's still important that you don't paste your
+# actual account private key and use the generated one.
+DEPLOYER_PRIVATE_KEY=
+
+# Alchemy rpc URL is used while deploying the contracts to some testnets/mainnets, checkout `foundry.toml` for it's use.
+ALCHEMY_API_KEY=oKxs-03sij-U_N0iOlrSsZFr29-IqbuF
+
+# Etherscan API key is used to verify the contract on etherscan.
+ETHERSCAN_API_KEY=DNXJA8RX2Q3VZ4URQIWP7Z68CJXQZSC6AW

packages/foundry/.gitignore

@@ -0,0 +1,14 @@
+# Compiler files
+cache/
+out/
+
+# Ignores development broadcast logs
+/broadcast/*/31337/
+/broadcast/**/dry-run/
+
+# Docs
+docs/
+
+# Dotenv file
+.env
+localhost.json

packages/foundry/.prettier.json

@@ -0,0 +1,6 @@
+{
+  "arrowParens": "avoid",
+  "printWidth": 120,
+  "tabWidth": 2,
+  "trailingComma": "all"
+}

packages/foundry/contracts/YourContract.sol

@@ -0,0 +1,84 @@
+//SPDX-License-Identifier: MIT
+pragma solidity >=0.8.0 <0.9.0;
+
+// Useful for debugging. Remove when deploying to a live network.
+import "forge-std/console.sol";
+
+// Use openzeppelin to inherit battle-tested implementations (ERC20, ERC721, etc)
+// import "@openzeppelin/contracts/access/Ownable.sol";
+
+/**
+ * A smart contract that allows changing a state variable of the contract and tracking the changes
+ * It also allows the owner to withdraw the Ether from the contract
+ * @author BuidlGuidl
+ */
+contract YourContract {
+  // State Variables
+  address public immutable owner;
+  string public greeting = "Building Unstoppable Apps!!!";
+  bool public premium = false;
+  uint256 public totalCounter = 0;
+  mapping(address => uint256) public userGreetingCounter;
+
+  // Events: a way to emit log statements from smart contract that can be listened to by external parties
+  event GreetingChange(
+    address indexed greetingSetter,
+    string newGreeting,
+    bool premium,
+    uint256 value
+  );
+
+  // Constructor: Called once on contract deployment
+  // Check packages/foundry/deploy/Deploy.s.sol
+  constructor(address _owner) {
+    owner = _owner;
+  }
+
+  // Modifier: used to define a set of rules that must be met before or after a function is executed
+  // Check the withdraw() function
+  modifier isOwner() {
+    // msg.sender: predefined variable that represents address of the account that called the current function
+    require(msg.sender == owner, "Not the Owner");
+    _;
+  }
+
+  /**
+   * Function that allows anyone to change the state variable "greeting" of the contract and increase the counters
+   *
+   * @param _newGreeting (string memory) - new greeting to save on the contract
+   */
+  function setGreeting(string memory _newGreeting) public payable {
+    // Print data to the anvil chain console. Remove when deploying to a live network.
+
+    console.logString("Setting new greeting");
+    console.logString(_newGreeting);
+
+    greeting = _newGreeting;
+    totalCounter += 1;
+    userGreetingCounter[msg.sender] += 1;
+
+    // msg.value: built-in global variable that represents the amount of ether sent with the transaction
+    if (msg.value > 0) {
+      premium = true;
+    } else {
+      premium = false;
+    }
+
+    // emit: keyword used to trigger an event
+    emit GreetingChange(msg.sender, _newGreeting, msg.value > 0, msg.value);
+  }
+
+  /**
+   * Function that allows the owner to withdraw all the Ether in the contract
+   * The function can only be called by the owner of the contract as defined by the isOwner modifier
+   */
+  function withdraw() public isOwner {
+    (bool success,) = owner.call{ value: address(this).balance }("");
+    require(success, "Failed to send Ether");
+  }
+
+  /**
+   * Function that allows the contract to receive ETH
+   */
+  receive() external payable { }
+}

packages/foundry/deployments/.gitignore

@@ -0,0 +1,2 @@
+# Ignore 31337 deployments
+31337.json

packages/foundry/foundry.toml

@@ -0,0 +1,44 @@
+[profile.default]
+src = 'contracts'
+out = 'out'
+libs = ['lib']
+fs_permissions = [{ access = "read-write", path = "./"}]
+
+[rpc_endpoints]
+default_network = "http://127.0.0.1:8545"
+localhost = "http://127.0.0.1:8545"
+
+mainnet = "https://eth-mainnet.alchemyapi.io/v2/${ALCHEMY_API_KEY}"
+sepolia = "https://eth-sepolia.g.alchemy.com/v2/${ALCHEMY_API_KEY}"
+arbitrum = "https://arb-mainnet.g.alchemy.com/v2/${ALCHEMY_API_KEY}"
+arbitrumSepolia = "https://arb-sepolia.g.alchemy.com/v2/${ALCHEMY_API_KEY}"
+optimism = "https://opt-mainnet.g.alchemy.com/v2/${ALCHEMY_API_KEY}"
+optimismSepolia = "https://opt-sepolia.g.alchemy.com/v2/${ALCHEMY_API_KEY}"
+polygon = "https://polygon-mainnet.g.alchemy.com/v2/${ALCHEMY_API_KEY}"
+polygonMumbai = "https://polygon-mumbai.g.alchemy.com/v2/${ALCHEMY_API_KEY}"
+gnosis = "https://rpc.gnosischain.com"
+chiado = "https://rpc.chiadochain.net"
+base = "https://mainnet.base.org"
+baseGoerli = "https://goerli.base.org"
+baseSepolia = "https://sepolia.base.org"
+polygonZkEvm = "https://polygonzkevm-mainnet.g.alchemy.com/v2/${ALCHEMY_API_KEY}"
+polygonZkEvmTestnet = "https://polygonzkevm-testnet.g.alchemy.com/v2/${ALCHEMY_API_KEY}"
+zkSyncTestnet = "https://testnet.era.zksync.dev"
+zkSync = "https://mainnet.era.zksync.io"
+scrollSepolia = "https://sepolia-rpc.scroll.io"
+scroll = "https://rpc.scroll.io"
+
+[etherscan]
+polygonMumbai = { key = "${ETHERSCAN_API_KEY}" }
+sepolia = { key = "${ETHERSCAN_API_KEY}" }
+
+
+[fmt]
+multiline_func_header = "params_first"
+line_length = 80
+tab_width = 2
+quote_style = "double"
+bracket_spacing = true
+int_types = "long"
+
+# See more config options https://github.com/foundry-rs/foundry/tree/master/config

packages/foundry/package.json

@@ -0,0 +1,31 @@
+{
+  "name": "@se-2/foundry",
+  "version": "0.0.1",
+  "type": "module",
+  "scripts": {
+    "account": "node scripts-js/ListAccount.js",
+    "chain": "anvil --config-out localhost.json",
+    "compile": "forge compile",
+    "deploy": "forge build --build-info --build-info-path out/build-info/ && forge script script/Deploy.s.sol --rpc-url ${1:-default_network} --broadcast --legacy && node scripts-js/generateTsAbis.js",
+    "deploy:verify": "forge build --build-info --build-info-path out/build-info/ && forge script script/Deploy.s.sol --rpc-url ${1:-default_network} --broadcast --legacy --verify ; node scripts-js/generateTsAbis.js",
+    "flatten": "forge flatten",
+    "fork": "anvil --fork-url ${0:-mainnet} --chain-id 31337 --config-out localhost.json",
+    "format": "forge fmt && prettier --write ./script/**/*.js",
+    "generate": "node scripts-js/generateAccount.js",
+    "lint": "forge fmt --check && prettier --check ./script/**/*.js",
+    "postinstall": "shx cp -n .env.example .env",
+    "test": "forge test",
+    "verify": "forge build --build-info --build-info-path out/build-info/ && forge script script/VerifyAll.s.sol --ffi --rpc-url ${1:-default_network}"
+  },
+  "dependencies": {
+    "dotenv": "~16.3.1",
+    "envfile": "~6.18.0",
+    "ethers": "~5.7.1",
+    "prettier": "~2.8.8",
+    "qrcode": "~1.5.3",
+    "toml": "~3.0.0"
+  },
+  "devDependencies": {
+    "shx": "^0.3.4"
+  }
+}

packages/foundry/remappings.txt

@@ -0,0 +1 @@
+@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts