.eslintrc

{
  "env": {
    "node": true,
    "browser": true,
    "commonjs": true,
    "es6": true
  },
  "ecmaFeatures": {
    "arrowFunctions": true,
    "blockBindings": true,
    "forOf": true,
    "objectLiteralComputedProperties": true,
    "objectLiteralShorthandProperties": true,
    "templateStrings": true,
    "globalReturn": true
  },
  "rules": {
    "quotes": [2, "single"],
    "semi": [2, "never"],
    "comma-style": [2, "first"],
    "object-shorthand": [2, "always"],
    "no-unused-vars": [2, { "vars": "all", "args": "none" }],
    "comma-dangle": [2, "never"],
    "dot-notation": [2],
    "eqeqeq": [2, "allow-null"],
    "strict": [2, "global"],
    "handle-callback-err": [2, "^(err|er)$"],
    "eol-last": [2],
    "quotes": [2, "single"],
    "space-after-keywords": [2, "always"],
    "space-before-blocks": [2, "always"],
    "space-before-function-paren": [2, "never"],
    "space-before-keywords": [2, "always"],
    "space-in-parens": [2, "never"],
    "arrow-body-style": [2, "always"],
    "arrow-parens": [2, "always"],
    "arrow-spacing": [2]
  }
}