.eslintrc

{
    "env": {
        "node": true,
        "es6": true
    },
    "rules": {
      "semi": 2,
      "indent": ["error", 2],
      "arrow-body-style": [ ERROR, "always" ],
      "arrow-parens": [ ERROR, "always" ],
      "arrow-spacing": [ ERROR, { "before": true, "after": true }],
      "constructor-super": ERROR,
      "no-arrow-condition": ERROR,
      "no-class-assign": ERROR,
      "no-const-assign": ERROR,
      "no-dupe-class-members": ERROR,
      "no-this-before-super": ERROR,
      "no-var": WARN,
      "object-shorthand": [ WARN, "never" ],
      "prefer-arrow-callback": WARN,
      "prefer-spread": WARN,
      "require-yield": ERROR
    }
}