upgrading to toolbox v3 (#4)

* updated: changes related to v3 toolbox

* updated: dropping unsupported node v

* Update README.md

.env.example

@@ -1,7 +1,5 @@
 # Be aware. dont commit this file or any of theses keys to your repo.
-PRIV_KEY=
-ETHEREUM_MAINNET_RPC_URL=
-GOERLI_RPC_URL=
+PRIVATE_KEY=
 POLYGON_MUMBAI_RPC_URL=
 POLYGON_MAINNET_RPC_URL=
 ETHERSCAN_API_KEY=

.github/workflows/ci.yml

@@ -12,27 +12,29 @@ on:
 
 jobs:
   e2e-test:
-    runs-on: ubuntu-latest
     strategy:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, macos-latest, windows-latest]
-        node-version: [14.x, 16.x, 18.x]
+        node-version: [16.x, 18.x, 20.x]
         # See supported Node.js release schedule at https://nodejs.org/en/about/releases/
+    runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }} on ${{ matrix.os }}
         uses: actions/setup-node@v3
         # uses: borales/actions-yarn@v3.0.0
         with:
           node-version: ${{ matrix.node-version }}
-      - name: "Install packages with latest npm"
-        run: npm i -g npm@latest && npm install
+      - name: "Install packages with npm"
+        run: npm install
       - name: "Copy .env.example to .env"
         run: cp .env.example .env
       - name: "Start hardhat node"
         run: npx hardhat node & sleep 3
+      - name: "List accounts with balances"
+        run: npx hardhat accounts
       - name: "Check for solidity linter errors"
         run: npx hardhat check
       - name: "Compile contracts"

README.md

@@ -2,7 +2,7 @@
 
 This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, a sample script that deploys that contract, and an example of a task implementation, which simply lists the available accounts with balances.
 
-> Recommended to use Node.js v14+ and npm v7+.
+> Recommended to use Node.js v16+ and npm v8+
 
 > Rename `env.example` to `.env` and add your env specific keys.
 

contracts/Greeter.sol

@@ -1,5 +1,5 @@
 //SPDX-License-Identifier: MIT
-pragma solidity 0.8.16;
+pragma solidity 0.8.19;
 
 contract Greeter {
     string private greeting;

hardhat.config.js

@@ -4,7 +4,7 @@ require("@nomiclabs/hardhat-solhint");
 require('dotenv').config();
 
 // defining accounts to reuse.
-const accounts = process.env.PRIV_KEY ? [process.env.PRIV_KEY] : [];
+const accounts = process.env.PRIVATE_KEY ? [process.env.PRIVATE_KEY] : [];
 
 // This is a sample Hardhat task. To learn how to create your own go to
 // https://hardhat.org/guides/create-task.html
@@ -16,23 +16,22 @@ task("accounts", "Prints the list of accounts with balances", async () => {
 
   for (const account of accounts) {
     const balance = await provider.getBalance(account.address);
-    console.log(`${account.address} - ${ethers.utils.formatEther(balance)} ETH`);
+    console.log(`${account.address} - ${ethers.formatEther(balance)} ETH`);
   }
 });
 
 task("deploy", "Deploys Contract", async () => {
-  const contractFactory = await ethers.getContractFactory("Greeter");
-  const contract = await contractFactory.deploy("Hello, Hardhat!");
-  await contract.deployed();
-  console.log("contract deployed at:", contract.address);
+  const contract = await ethers.deployContract("Greeter", ["Hello, Hardhat!"]);
+  await contract.waitForDeployment();
+  console.log("contract deployed at:", contract.target);
 });
 
 task("balance", "Prints an account's balance")
   .addParam("account", "The account's address")
   .setAction(async ({ account }) => {
     const provider = await ethers.provider;
     const balance = await provider.getBalance(account);
-    console.log(hre.ethers.utils.formatEther(balance), "ETH");
+    console.log(ethers.formatEther(balance), "ETH");
   });
 
 
@@ -45,20 +44,12 @@ module.exports = {
     local: {
       url: "http://127.0.0.1:8545",
     },
-    main: {
-      url: process.env.ETHEREUM_MAINNET_RPC_URL,
-      accounts: accounts
-    },
-    goerli: {
-      url: process.env.GOERLI_RPC_URL,
-      accounts // private keys
-    },
-    polygonMumbai: {
-      url: process.env.POLYGON_MUMBAI_RPC_URL,
+    mumbai: {
+      url: process.env.POLYGON_MUMBAI_RPC_URL || "https://rpc-mumbai.maticvigil.com",
       accounts
     },
-    polygonMain: {
-      url: process.env.POLYGON_MAINNET_RPC_URL,
+    polygon: {
+      url: process.env.POLYGON_MAINNET_RPC_URL || "https://rpc-mainnet.maticvigil.com",
       accounts
     }
   },
@@ -71,7 +62,7 @@ module.exports = {
     currency: "USD",
   },
   solidity: {
-    version: "0.8.16",
+    version: "0.8.19",
     settings: {
       optimizer: {
         enabled: true,

package.json

@@ -13,10 +13,10 @@
   "author": "Salman Dabbakuti",
   "license": "ISC",
   "devDependencies": {
-    "@nomicfoundation/hardhat-chai-matchers": "^1.0.4",
-    "@nomicfoundation/hardhat-toolbox": "^2.0.0",
-    "@nomiclabs/hardhat-solhint": "^2.0.0",
-    "dotenv": "^16.0.3",
-    "hardhat": "^2.10.2"
+    "@nomicfoundation/hardhat-chai-matchers": "^2.0.2",
+    "@nomicfoundation/hardhat-toolbox": "^3.0.0",
+    "@nomiclabs/hardhat-solhint": "^3.0.1",
+    "dotenv": "^16.3.1",
+    "hardhat": "^2.17.4"
   }
-}
+}

scripts/deploy.js

@@ -5,15 +5,14 @@
 */
 
 async function main() {
-  const contractFactory = await ethers.getContractFactory("Greeter");
-  const contract = await contractFactory.deploy("Hello, Hardhat!");
-  await contract.deployed();
+  const contract = await ethers.deployContract("Greeter", ["Hello, Hardhat!"]);
+  await contract.waitForDeployment();
   return contract;
 }
 
 main()
   .then(async (contract) => {
-    console.log("Contract deployed at:", contract.address);
+    console.log("Contract deployed at:", contract.target);
     // Write to contract
     const tx = await contract.setGreeting("Hello Ethereum Devs!");
     await tx.wait();

test/sample-test.js

@@ -13,12 +13,9 @@ describe("Contract Tests", function () {
   // `before` will run only once, useful for deploying the contract and use it on every test
   // It receives a callback, which can be async.
   before(async () => {
-    // Get the ContractFactory and Signers here.
-    const contractFactory = await ethers.getContractFactory("Greeter");
     accounts = await ethers.getSigners();
-    // Deploy the contract specifying the constructor arguments
-    greeterContract = await contractFactory.deploy("Hello, Hardhat!");
-    await greeterContract.deployed();
+    greeterContract = await ethers.deployContract("Greeter", ["Hello, Hardhat!"], { gasLimit: 1000000 });
+    await greeterContract.waitForDeployment();
   });
 
   it("Should return the new greeting once it's changed", async function () {