{
  "env": {
    "es6": true,
    "node": true
  },
  "parserOptions": {
    "ecmaVersion": 9,
    "sourceType": "module"
  },
  "rules": {
    "no-unused-vars": "warn",
    "quote-props": [ "error", "consistent" ],
    "semi": [ "error", "always" ],
    "no-mixed-operators": "warn",
    "no-tabs": "warn",
    "no-useless-escape": "warn"
  }
}

{
  "env": {
    "es6": true,
    "node": true
  },
  "parserOptions": {
    "ecmaVersion": 9,
    "sourceType": "module"
  },
  "rules": {
    "quote-props": [ "error", "consistent" ],
    "semi": [ "error", "always" ],
    "no-mixed-operators": "warn",
    "no-tabs": "warn",
    "no-useless-escape": "warn"
  }
}

Remove no-unused-vars from eslint config
Remove no-unused-vars from eslint config
