Summary

Applies consistent formatting and linting to Solidity code. Introduced as we have differences appearing on our PRs and different formatting styles across our Solidity codebase.

Specifically, it introduces prettier to apply consistent formatting to our Solidity code. Run npm run prettier:sol to auto-format all code. To find linting errors run: npm run lint:sol. The config used to decide the formatting rules is in contracts/.prettierrc.

The Solidity linting has been added into CI. All Solidity file changes are formatting changes only - the result of applying the below config.

The config I have used is is mostly the default, feel free to propose changes:

{
    "overrides": [
      {
        "files": "*.sol",
        "options": {
          "printWidth": 80,
          "tabWidth": 4,
          "useTabs": false,
          "singleQuote": false,
          "bracketSpacing": false,
          "explicitTypes": "always"
        }
      }
    ]
  }