My favorite setup for writing Solidity smart contracts.

• Hardhat: compile and run the smart contracts on a local development network
• TypeChain: generate TypeScript types for smart contracts
• Ethers: renowned Ethereum library and wallet implementation
• Waffle: tooling for writing comprehensive smart contract tests
• Solhint: linter
• Solcover: code coverage
• Prettier Plugin Solidity: code formatter

This repo is a GitHub template, so to start using it, click the "Use this template" button at the top of the page.

Before running any command, you need to create a .env file and set a BIP-39 compatible mnemonic as an environment variable. Follow the example in .env.example. If you don't already have a mnemonic, use this website to generate one.

Then, proceed with installing dependencies:

$ yarn install

Compile the smart contracts with Hardhat:

$ yarn compile

Compile the smart contracts and generate TypeChain artifacts:

$ yarn typechain

Lint the Solidity code:

$ yarn lint:sol

Lint the TypeScript code:

$ yarn lint:ts

Run the Mocha tests:

$ yarn test

Generate the code coverage report:

$ yarn coverage

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

$ REPORT_GAS=true yarn test

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

$ yarn clean

Deploy the contracts to Hardhat Network:

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

If you use VSCode, you can get Solidity syntax highlighting via the vscode-solidity extension.

If you can't get the Waffle matchers to work, try to make your ethers package version match the version used by the @ethereum-waffle/chai package. See #111 for more details.

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