.eslintrc.json

{
    "extends": "eslint:recommended",
    "env": {
        "node": true
    },
    "parserOptions": {
        "ecmaVersion": 2017
    },
    "rules": {
        "brace-style": [
            "error",
            "1tbs",
            { "allowSingleLine": true }
        ],
        "comma-dangle": [
            "error",
            "always-multiline"
        ],
        "comma-spacing": "error",
        "comma-style": "error",
        "curly": [
            "error",
            "multi-line",
            "consistent"
        ],
        "dot-location": [
            "error",
            "property"
        ],
        "handle-callback-err": "error",
        "indent": [
            "error",
            "tab",
            { "SwitchCase": 1 }
        ],
        "max-nested-callbacks": [
            "error",
            { "max": 4 }
        ],
        "max-statements-per-line": [
            "error",
            { "max": 2 }
        ],
        "no-console": "off",
        "no-empty-function": "error",
        "no-floating-decimal": "error",
        "no-inline-comments": "off",
        "no-lonely-if": "error",
        "no-multi-spaces": "error",
        "no-multiple-empty-lines": [
            "error",
            {
                "max": 2,
                "maxEOF": 1,
                "maxBOF": 0
            }
        ],
        "no-shadow": [
            "error"
        ],
        "no-trailing-spaces": [
            "error"
        ],
        "object-curly-spacing": [
            "error",
            "always"
        ],
        "prefer-const": "error",
        "quotes": [
            "error",
            "single"
        ],
        "semi": [
            "error",
            "always"
        ],
        "space-before-blocks": "error",
        "space-before-function-paren": [
            "error",
            {
                "anonymous": "never",
                "named": "never",
                "asyncArrow": "never"
            }
        ],
        "space-in-parens": "error",
        "space-infix-ops": "error",
        "space-unary-ops": [
            "error",
            {
                "words": true, 
                "nonwords": false
            }
        ],
        "spaced-comment": [
            "error",
            "always"
        ],
        "yoda": "error",
        "eol-last": [
            "error",
            "always"
        ]
    }
}