.eslintrc

{
    "root": true,
    "extends": ["plugin:prettier/recommended"],
    "env": {
      "node": true,
      "es6": true,
      "mocha": true
    },
    "parser": "babel-eslint",
    "parserOptions": {
      "sourceType": "module",
      "ecmaVersion": 2017
    },
    "rules": {
      "one-var": 0,
      "one-var-declaration-per-line": 0,
      "new-cap": 0,
      "consistent-return": 0,
      "arrow-parens": ["error", "as-needed"],
      "no-param-reassign": 0,
      "comma-dangle": 0,
      "curly": ["error", "multi-line"],
      "no-shadow": ["error", {
        "allow": ["req", "res", "err"]
      }],
      "prettier/prettier": [
        "error",
        {
          "trailingComma": "all",
          "tabWidth": 2,
          "semi": true,
          "singleQuote": true,
          "endOfLine": "crlf"
        }
      ]
    }
  }