# Hardhat Template [![Github Actions][gha-badge]][gha] [![Hardhat][hardhat-badge]][hardhat] [![License: MIT][license-badge]][license]

[gha]: https://github.com/paulrberg/hardhat-template/actions
[gha-badge]: https://github.com/paulrberg/hardhat-template/actions/workflows/ci.yml/badge.svg
[hardhat]: https://hardhat.org/
[hardhat-badge]: https://img.shields.io/badge/Built%20with-Hardhat-FFDB1C.svg
[license]: https://opensource.org/licenses/MIT
[license-badge]: https://img.shields.io/badge/License-MIT-blue.svg

A Hardhat-based template for developing Solidity smart contracts, with sensible defaults.

- [Hardhat](https://github.com/nomiclabs/hardhat): compile, run and test smart contracts
- [TypeChain](https://github.com/ethereum-ts/TypeChain): generate TypeScript bindings for smart contracts
- [Ethers](https://github.com/ethers-io/ethers.js/): renowned Ethereum library and wallet implementation
- [Solhint](https://github.com/protofire/solhint): code linter
- [Solcover](https://github.com/sc-forks/solidity-coverage): code coverage
- [Prettier Plugin Solidity](https://github.com/prettier-solidity/prettier-plugin-solidity): code formatter

## Getting Started

Click the [`Use this template`](https://github.com/paulrberg/hardhat-template/generate) button at the top of the page to
create a new repository with this repo as the initial state.

## Features

This template builds upon the frameworks and libraries mentioned above, so for details about their specific features, please consult their respective documentations.

For example, for Hardhat, you can refer to the [Hardhat Tutorial](https://hardhat.org/tutorial) and the [Hardhat
Docs](https://hardhat.org/docs). You might be in particular interested in reading the [Testing Contracts](https://hardhat.org/tutorial/testing-contracts) section.

### Sensible Defaults

This template comes with sensible default configurations in the following files:

```text
├── .commitlintrc.yml
├── .editorconfig
├── .eslintignore
├── .eslintrc.yml
├── .gitignore
├── .prettierignore
├── .prettierrc.yml
├── .solcover.js
├── .solhintignore
├── .solhint.json
├── .yarnrc.yml
└── hardhat.config.ts
```

### GitHub Actions

This template comes with GitHub Actions pre-configured. Your contracts will be linted and tested on every push and pull
request made to the `main` branch.

Note though that to make this work, you must se your `INFURA_API_KEY` and your `MNEMONIC` as GitHub secrets.

You can edit the CI script in [.github/workflows/ci.yml](./.github/workflows/ci.yml).

### Conventional Commits

This template enforces the [Conventional Commits](https://www.conventionalcommits.org/) standard for git commit messages.
This is a lightweight convention that creates an explicit commit history, which makes it easier to write automated
tools on top of.

### Git Hooks

This template uses [Husky](https://github.com/typicode/husky) to run automated checks on commit messages, and [Lint Staged](https://github.com/okonet/lint-staged) to automatically format the code with Prettier when making a git commit.

## Usage

### Pre Requisites

Before being able to run any command, you need to create a `.env` file and set a BIP-39 compatible mnemonic as an environment
variable. You can follow the example in `.env.example`. If you don't already have a mnemonic, you can use this [website](https://iancoleman.io/bip39/) to generate one.

Then, proceed with installing dependencies:

```sh
$ yarn install
```

### Compile

Compile the smart contracts with Hardhat:

```sh
$ yarn compile
```

### TypeChain

Compile the smart contracts and generate TypeChain bindings:

```sh
$ yarn typechain
```

### Test

Run the tests with Hardhat:

```sh
$ yarn test
```

### Lint Solidity

Lint the Solidity code:

```sh
$ yarn lint:sol
```

### Lint TypeScript

Lint the TypeScript code:

```sh
$ yarn lint:ts
```

### Coverage

Generate the code coverage report:

```sh
$ yarn coverage
```

### Report Gas

See the gas usage per unit test and average gas per method call:

```sh
$ REPORT_GAS=true yarn test
```

### Clean

Delete the smart contract artifacts, the coverage reports and the Hardhat cache:

```sh
$ yarn clean
```

### Deploy

Deploy the contracts to Hardhat Network:

```sh
$ yarn deploy --greeting "Bonjour, le monde!"
```

## Tips

### Syntax Highlighting

If you use VSCode, you can get Solidity syntax highlighting with the [hardhat-solidity](https://marketplace.visualstudio.com/items?itemName=NomicFoundation.hardhat-solidity) extension.

## Using GitPod

Gitpod is an open-source developer platform for remote development.

To view the coverage report generated by `yarn coverage` just click `Go Live` from the status bar to turn the server on/off.

## License

[MIT](./LICENSE.md) © Paul Razvan Berg
