.eslintrc

{
    "env": {
        "commonjs": true,
        "es6": true
    },
    "extends": "eslint:recommended",
    "parserOptions": {
        "ecmaVersion": 6,
        "sourceType": "module"
    },
    "rules": {
        "indent": [
            "error",
            2
        ],
        "linebreak-style": [
            "error",
            "unix"
        ],
        "quotes": [
            "error",
            "single"
        ],
        "semi": [
            "error",
            "always"
        ],
        "no-extra-parens": [
            "error",
            "all"
        ],
        "class-methods-use-this": "error",
        "complexity": [
            "error",
            8
        ],
        "consistent-return": [
            "error",
            {
                "treatUndefinedAsUnspecified": false
            }
        ],
        "no-unused-expressions": [
            "error"
        ],
        "no-unused-vars": "error",
        "vars-on-top": [
            "error"
        ],
        "yoda": "error",
        "no-var": "error",
        "prefer-arrow-callback": "error",
        "prefer-const": "error",
        "prefer-spread": "error",
        "sort-imports": "error"
    }
}