Initial commit

.editorconfig

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+# EditorConfig is awesome: https://EditorConfig.org
+
+# top-most EditorConfig file
+root = true
+
+[*]
+charset = utf-8
+end_of_line = lf
+indent_style = space
+indent_size = 4
+insert_final_newline = true
+trim_trailing_whitespace = true
+
+[*.md]
+max_line_length = 0
+trim_trailing_whitespace = false
+[{Makefile,**.mk}]
+# Use tabs for indentation (Makefiles require tabs)
+indent_style = tab

.env.sample

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+TESTNET_PRIVATE_KEY=0x1234
+MAINNET_PRIVATE_KEY=0x1234
+ETHERSCAN_API_KEY=""
+INFURA_API_KEY=abcdef
+REPORT_GAS=true
+CMC_API_KEY=""

.gitignore

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+node_modules
+.env
+coverage
+coverage.json
+typechain
+typechain-types
+
+# Hardhat files
+cache
+artifacts
+
+.idea/
+**/.openzeppelin/unknown-*.json
+yarn-error.log

.nvmrc

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+16

.solcover.js

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+module.exports = {
+    skipFiles: ["mocks", "interfaces"],
+};

README.md

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+# Sample Hardhat Project
+
+This project demonstrates a basic Hardhat use case. It comes with a sample contract, a test for that contract, and a script that deploys that contract.
+
+Try running some of the following tasks:
+
+```shell
+npx hardhat help
+npx hardhat test
+REPORT_GAS=true npx hardhat test
+npx hardhat node
+npx hardhat run scripts/deploy.ts
+```

abi/Lock.json

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+[
+    {
+        "inputs": [
+            {
+                "internalType": "uint256",
+                "name": "_unlockTime",
+                "type": "uint256"
+            }
+        ],
+        "stateMutability": "payable",
+        "type": "constructor"
+    },
+    {
+        "anonymous": false,
+        "inputs": [
+            {
+                "indexed": false,
+                "internalType": "uint256",
+                "name": "amount",
+                "type": "uint256"
+            },
+            {
+                "indexed": false,
+                "internalType": "uint256",
+                "name": "when",
+                "type": "uint256"
+            }
+        ],
+        "name": "Withdrawal",
+        "type": "event"
+    },
+    {
+        "inputs": [],
+        "name": "owner",
+        "outputs": [
+            {
+                "internalType": "address payable",
+                "name": "",
+                "type": "address"
+            }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+    },
+    {
+        "inputs": [],
+        "name": "unlockTime",
+        "outputs": [
+            {
+                "internalType": "uint256",
+                "name": "",
+                "type": "uint256"
+            }
+        ],
+        "stateMutability": "view",
+        "type": "function"
+    },
+    {
+        "inputs": [],
+        "name": "withdraw",
+        "outputs": [],
+        "stateMutability": "nonpayable",
+        "type": "function"
+    }
+]

contracts/Lock.sol

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+// SPDX-License-Identifier: UNLICENSED
+pragma solidity ^0.8.9;
+
+// Uncomment this line to use console.log
+// import "hardhat/console.sol";
+
+contract Lock {
+    uint public unlockTime;
+    address payable public owner;
+
+    event Withdrawal(uint amount, uint when);
+
+    constructor(uint _unlockTime) payable {
+        require(
+            block.timestamp < _unlockTime,
+            "Unlock time should be in the future"
+        );
+
+        unlockTime = _unlockTime;
+        owner = payable(msg.sender);
+    }
+
+    function withdraw() public {
+        // Uncomment this line, and the import of "hardhat/console.sol", to print a log in your terminal
+        // console.log("Unlock time is %o and block timestamp is %o", unlockTime, block.timestamp);
+
+        require(block.timestamp >= unlockTime, "You can't withdraw yet");
+        require(msg.sender == owner, "You aren't the owner");
+
+        emit Withdrawal(address(this).balance, block.timestamp);
+
+        owner.transfer(address(this).balance);
+    }
+}

hardhat.config.ts

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+// eslint-disable-next-line @typescript-eslint/no-var-requires
+require("dotenv").config({ path: "./.env" });
+
+import {HardhatUserConfig} from "hardhat/config";
+import "@nomicfoundation/hardhat-toolbox";
+import "hardhat-contract-sizer";
+import "hardhat-abi-exporter";
+import "@dmob/hardhat-test-helpers";
+import "@openzeppelin/hardhat-upgrades";
+
+const config: HardhatUserConfig = {
+    solidity: {
+        version: "0.8.17",
+        settings: {
+            optimizer: {
+                enabled: true,
+                runs: 2,
+            }
+        }
+    },
+
+    networks: {
+        hardhat: {
+            accounts: {
+                mnemonic:
+                    "abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon abandon about",
+            },
+        },
+        goerli: {
+            chainId: 5,
+            url: `${process.env.RPC_URL || `https://goerli.infura.io/v3/${process.env.INFURA_API_KEY}`}`,
+            accounts: [process.env.TESTNET_PRIVATE_KEY || ""],
+            gas: "auto",
+            gasPrice: "auto",
+            gasMultiplier: 1.2,
+        },
+        mainnet: {
+            chainId: 1,
+            url: `${process.env.RPC_URL || `https://mainnet.infura.io/v3/${process.env.INFURA_API_KEY}`}`,
+            accounts: [process.env.MAINNET_PRIVATE_KEY || ""],
+            gas: "auto",
+            gasPrice: "auto",
+            gasMultiplier: 1.2,
+        },
+    },
+
+    etherscan: {
+        apiKey: process.env.ETHERSCAN_API_KEY,
+    },
+
+    contractSizer: {
+        alphaSort: true,
+        runOnCompile: false,
+        disambiguatePaths: false,
+    },
+
+    gasReporter: {
+        currency: "USD",
+        gasPrice: 51,
+        enabled: process.env.REPORT_GAS === "true",
+        coinmarketcap: process.env.CMC_API_KEY,
+    },
+
+    abiExporter: {
+        runOnCompile: true,
+        only: [":Lock$"],
+        clear: true,
+        flat: true,
+        spacing: 4,
+    },
+};
+
+export default config;