.eslintrc.json

{
  "env": {
    "es6": true,
    "mocha": true,
    "node": true
  },
  "extends": "eslint:recommended",
  "parserOptions": {
    "ecmaVersion": 2015,
    "sourceType": "script"
  },
  "rules": {
    "curly": "error",
    "strict": [
      "error",
      "global"
    ],
    "eqeqeq": "error",
    "no-undefined": "error",
    "vars-on-top": "error",
    "no-useless-return": "error",
    "no-unused-expressions": "error",
    "no-throw-literal": "error",
    "no-return-assign": "error",
    "no-new": "error",
    "no-console": "off",
    "no-multi-spaces": "error",
    "no-loop-func": "error",
    "no-implicit-globals": "error",
    "no-floating-decimal": "error",
    "no-extend-native": "error",
    "no-eq-null": "error",
    "wrap-iife": [ "error", "inside" ],
    "guard-for-in": "error",
    "default-case": "error",
    "dot-location": [ "error", "property" ],
    "indent": [
      "error",
      "tab",
      {
        "SwitchCase": 1
      }
    ],
    "dot-notation": [ "error", { "allowKeywords": true } ],
    "linebreak-style": [
      "error",
      "unix"
    ],
    "quotes": [
      "error",
      "single"
    ],
    "semi": [
      "error",
      "always"
    ],
    "getter-return": [
      "error",
      {
        "allowImplicit": false
      }
    ]
  }
}