.eslintrc.json

{
    "env": {
        "es6": true,
        "node": true
    },
    "extends": "eslint:recommended",
    "parser": "babel-eslint",
    "parserOptions": {
        "sourceType": "module"
    },
    "rules": {
        "no-console": 0,
        "no-unused-vars": "error",
        "no-use-before-define": "error",
        "linebreak-style": [
            "error",
            "unix"
        ],
        "quotes": [
            "error",
            "single"
        ],
        "semi": [
            "error",
            "always"
        ],
        "curly": [
            "error",
            "all"
        ],
        "default-case": "error",
        "no-else-return": "error",
        "no-empty-function": "error",
        "no-implicit-coercion": "error",
        "no-invalid-this": "error",
        "no-loop-func": "error",
        "no-multi-spaces": "error",
        "no-new-func": "error",
        "no-useless-return": "error",
        "global-require": "error",
        "no-path-concat": "error",
        "no-sync": "error",
        "array-bracket-spacing": [
            "error",
            "never"
        ],
        "block-spacing": [
            "error",
            "always"
        ],
        "brace-style": [
            "error",
            "1tbs"
        ],
        "camelcase": "error",
        "comma-dangle": [
            "error",
            "always-multiline"
        ],
        "comma-spacing": [
            "error",
            {
                "before": false,
                "after": true
            }
        ],
        "comma-style": [
            "error",
            "last"
        ],
        "key-spacing": [
            "error",
            {
                "beforeColon": false,
                "afterColon": true
            }
        ],
        "lines-around-comment": [
            "error",
            {
                "beforeBlockComment": true
            }
        ],
        "newline-after-var": [
            "error",
            "always"
        ],   
        "no-multi-assign": "error",
        "max-params": [
            1,
            3
        ],
        "new-cap": [
            "error",
            {
                "newIsCap": true,
                "capIsNew": false
            }
        ],
        "no-multiple-empty-lines": [
            "error",
            {
                "max": 2
            }
        ],
        "no-shadow-restricted-names": "error",
        "no-undef-init": "error",
        "keyword-spacing": "error",
        "space-before-blocks": [
            "error",
            "always"
        ]
    },
    "globals": {
        "describe": true,
        "it": true
    }
}