.eslintrc.json

{
  "root": true,
  "env": {
    "es6": true,
    "node": true
  },
  "extends": "eslint:recommended",
  "parserOptions": {
    "ecmaVersion": 2018,
    "sourceType": "module"
  },
  "rules": {
    "arrow-parens": [
      "warn",
      "as-needed"
    ],
    "arrow-spacing": "error",
    "block-spacing": "error",
    "comma-dangle": [
      "error",
      "always-multiline"
    ],
    "comma-style": [
      "error",
      "last"
    ],
    "eqeqeq": [
      "error",
      "always"
    ],
    "indent": [
      "error",
      2,
      {
        "SwitchCase": 1
      }
    ],
    "key-spacing": "error",
    "keyword-spacing": "error",
    "no-console": "off",
    "no-extra-parens": [
      "warn",
      "all",
      {
        "nestedBinaryExpressions": false
      }
    ],
    "no-implicit-coercion": "error",
    "no-multiple-empty-lines": [
      "error",
      {
        "max": 1,
        "maxEOF": 1
      }
    ],
    "no-spaced-func": "error",
    "no-var": "error",
    "prefer-arrow-callback": "error",
    "prefer-const": "error",
    "quotes": [
      "error",
      "single"
    ],
    "semi": [
      "error",
      "never"
    ],
    "space-before-blocks": "error"
  }
}