npx hardhat sample project

Author: thatguyintech

README.md

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+1. `npm init --yes`
+
+2. `npm install --save-dev hardhat` 
+
+3. add `node_modules` and `.env` to `.gitignore` file
+
+4. `npx hardhat` -> sample project
+
+5. in hardhat.config.js -> add mumbai network -> use alchemy rpc + metamask private key
+
+6. get mumbai testnet eth from https://mumbaifaucet.com/
+
+7. 

contracts/Greeter.sol

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+//SPDX-License-Identifier: Unlicense
+pragma solidity ^0.8.0;
+
+import "hardhat/console.sol";
+
+contract Greeter {
+ string private greeting;
+
+ constructor(string memory _greeting) {
+ console.log("Deploying a Greeter with greeting:", _greeting);
+ greeting = _greeting;
+ }
+
+ function greet() public view returns (string memory) {
+ return greeting;
+ }
+
+ function setGreeting(string memory _greeting) public {
+ console.log("Changing greeting from '%s' to '%s'", greeting, _greeting);
+ greeting = _greeting;
+ }
+}

hardhat.config.js

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+require("@nomiclabs/hardhat-waffle");
+
+// This is a sample Hardhat task. To learn how to create your own go to
+// https://hardhat.org/guides/create-task.html
+task("accounts", "Prints the list of accounts", async (taskArgs, hre) => {
+ const accounts = await hre.ethers.getSigners();
+
+ for (const account of accounts) {
+ console.log(account.address);
+ }
+});
+
+// You need to export an object to set up your config
+// Go to https://hardhat.org/config/ to learn more
+
+/**
+ * @type import('hardhat/config').HardhatUserConfig
+ */
+module.exports = {
+ solidity: "0.8.4"
+};