.eslintrc.json

{
  "extends": [
    "eslint:recommended",
    "google"
  ],
  "rules": {
    "strict": 0,
    "prefer-rest-params": "off",
    "one-var": [
      "warn",
      "always"
    ],
    "no-multi-spaces": [
      "warn",
      {
        "exceptions": {
          "Property": true,
          "VariableDeclarator": true,
          "ImportDeclaration": true
        }
      }
    ]
  },
  "compilerOptions": {
    "target": "ES6",
    "module": "babel-eslint"
  },
  "env": {
    "browser": true,
    "node": true,
    "es6": true,
    "mocha": true
  },
  "parser": "babel-eslint",
  "parserOptions": {
    "ecmaVersion": 6,
    "sourceType": "module",
    "ecmaFeatures": {
      "arrowFunctions": true,
      "binaryLiterals": true,
      "blockBindings": true,
      "classes": true,
      "defaultParams": true,
      "destructuring": true,
      "forOf": true,
      "generators": true,
      "modules": true,
      "objectLiteralComputedProperties": true,
      "objectLiteralDuplicateProperties": true,
      "objectLiteralShorthandMethods": true,
      "objectLiteralShorthandProperties": true,
      "octalLiterals": true,
      "regexUFlag": true,
      "regexYFlag": true,
      "spread": true,
      "superInFunctions": true,
      "templateStrings": true,
      "unicodeCodePointEscapes": true,
      "globalReturn": true,
      "experimentalObjectRestSpread": true
    }
  }
}