.eslintrc.json

{
  "env": {
    "node": true,
    "commonjs": true,
    "es6": true,
    "browser": true
  },
  "extends": "eslint:recommended",
  "rules": {
    "indent": [
      "error",
      4,
      {
        "SwitchCase": 1
      }
    ],
    "space-infix-ops": ["error", { "int32Hint": false }],
    "space-in-parens": [
      2,
      "always",
      {
        "exceptions": [
          "empty"
        ]
      }
    ],
    "object-curly-spacing": [
      2,
      "always"
    ],
    "template-curly-spacing": [
      2,
      "always"
    ],
    "comma-spacing": [
      2,
      { "after": true }
    ],
    "array-bracket-spacing": [
      2,
      "always"
    ],
    "arrow-spacing": [ "error", { "before": true, "after": true } ],
    "no-undef": 0,
    "no-console": [
      "error",
      {
        "allow": [
          "warn",
          "error",
          "info",
          "log",
          "clear"
        ]
      }
    ]
  },
  "parserOptions": {
    "ecmaVersion": 2018
  }
}