.eslintrc.json

{
	"globals": {
		"google": true
	},
	"parserOptions": {
		"sourceType": "module",
		"ecmaVersion": 2017
	},
	"env": {
		"es6": true,
		"browser": true,
		"node": true
	},
	"extends": "eslint:recommended",
	"rules": {
		"indent": ["error", "tab", {
			"SwitchCase": 1
		}],
		"linebreak-style": ["error", "unix"],
		"strict": "error",

		"comma-dangle": ["error", "never"],
		"camelcase": ["warn", {
			"properties": "never"
		}],
		"semi": "error",
		"no-console": "off",
		"no-extra-boolean-cast": "off",

		"space-before-function-paren": ["error", "never"],
		"space-before-blocks": "error",
		"brace-style": ["error", "stroustrup"],
		"keyword-spacing": "error",
		"space-infix-ops": "error",
		"padding-line-between-statements": ["error", {
			"blankLine": "always", "prev": "*", "next": ["block", "if"]
		}],
		"object-property-newline": "error",
		"key-spacing": "error",

		"no-undef": ["warn"],
		"no-unused-vars": "warn",
		"vars-on-top": "error",
		"one-var": "error",
		"newline-after-var": "error",
		"one-var-declaration-per-line": ["error", "initializations"],
		"no-var": "warn"
	}
}