.eslintrc.json

{
  "env":
  {
      "es6": true,
      "node": true
  },
  "extends": "eslint:recommended",
  "rules":
  {
      "linebreak-style": ["error", "unix"],
      "indent": ["error", 2],
      "quotes": ["error", "double"],
      "semi": ["error", "always"],
      "max-len": ["error", 120],
      "no-unused-vars": ["warn"]
  }
}