.eslintrc

{
  "extends": "airbnb-base",

  "env": {
    "node": true
  },

  "parserOptions": {
    "sourceType": "script"
  },

  "rules": {
    "handle-callback-err": "error",
    "no-mixed-requires": "error",

    "no-bitwise": "off",
    "no-mixed-operators": ["error", {
      "allowSamePrecedence": true
    }],
    "no-underscore-dangle": ["off"],
    "object-curly-spacing": ["error", "never"],
    "one-var": ["error", {
      "uninitialized": "always",
      "initialized": "never"
    }],
    "one-var-declaration-per-line": ["error", "initializations"],

    "no-use-before-define": ["error", "nofunc"],

    "arrow-parens": ["error", "as-needed", {
      "requireForBlockBody": false
    }],
    "constructor-super": "error",
    "prefer-rest-params": "off",
    "prefer-spread": "off",
    "template-curly-spacing": ["error", "always"]
  }
}