.eslintrc.json

{
  "plugins": ["import"],
  "extends": ["eslint:recommended", "plugin:import/errors", "prettier"],
  "env": {
    "es6": true,
    "browser": true,
    "node": true
  },
  "parserOptions": {
    "ecmaVersion": "latest",
    "sourceType": "module"
  },
  "rules": {
    "no-unused-vars": [
      1,
      {
        "argsIgnorePattern": "res|next|^err"
      }
    ],
    "arrow-body-style": [2, "as-needed"],
    "no-param-reassign": [
      2,
      {
        "props": false
      }
    ],
    "no-console": 1,
    "quotes": ["error", "double", { "allowTemplateLiterals": true }],
    "func-names": 0,
    "space-unary-ops": 2,
    "space-in-parens": "error",
    "space-infix-ops": "error",
    "comma-dangle": 0,
    "max-len": 0,
    "import/extensions": 0,
    "no-underscore-dangle": 0,
    "consistent-return": 0,
    "radix": 0,
    "no-shadow": [
      2,
      {
        "hoist": "all",
        "allow": ["resolve", "reject", "done", "next", "err", "error"]
      }
    ],
    "no-unused-expressions": "off"
  }
}