.eslintrc.json

{
	"env": {
    "browser": true,
    "es6": true,
		"node": true
  },
  "extends": "eslint:recommended",
  "globals": {
    "document": false,
    "escape": false,
    "navigator": false,
    "unescape": false,
    "window": false,
    "describe": true,
    "before": true,
    "it": true,
    "expect": true,
    "sinon": true
  },
"parser": "babel-eslint",
  "parserOptions": {
    "sourceType": "module"
  },
"plugins": [],
  "rules": {
    "indent": ["error", 2],
    "linebreak-style": ["error", "windows"],
    "quotes": ["error", "single"],
    "semi": ["error", "always"],
		"no-extra-parens": ["error"],
		"no-irregular-whitespace": ["error"],
		"curly": ["error"],
		"eqeqeq": ["error"],
		"no-else-return": ["error"],
		"no-global-assign": ["error"],
		"no-lone-blocks": ["error"],
		"no-multi-spaces": ["error"],
		"no-redeclare": ["error"],
		"no-self-assign": ["error"],
		"no-unused-expressions": ["error"],
		"no-useless-return": ["error"],
		"no-undef": ["error"],
		"no-unused-vars": ["error"],
		"no-use-before-define": ["error"],
		"array-bracket-spacing": ["error"],
		"block-spacing": ["error"],
		"brace-style": ["error"],
		"comma-dangle": ["error", "always-multiline"],
		"comma-spacing": ["error"],
		"max-len": ["error", 80],
		"no-mixed-spaces-and-tabs": ["error"],
		"no-multiple-empty-lines": ["error"],
		"no-tabs": ["error"],
		"no-trailing-spaces": ["error"],
		"object-curly-spacing": ["error", "always"],
		"sort-keys": ["error"],
		"no-const-assign": ["error"],
		"no-duplicate-imports": ["error"],
		"no-var": ["error"],
		"prefer-const": ["error"]
  }
}