.eslintrc.json

{
    "env": {
        "es6": true,
        "node": true,
        "browser": true
    },
    "parserOptions": {
        "ecmaVersion": "latest",
        "sourceType": "module",
        "ecmaFeatures": {
            "experimentalObjectRestSpread": true
        }
    },
    "extends": ["eslint:recommended", "@hellomouse"],
    "rules": {
        "indent": ["error",
            4
        ],
        "curly": ["error", "multi"],
        "padded-blocks": [
            "error",
            {
                "blocks": "never"
            }
        ],
        "one-var": "off",
        "space-unary-ops": [
            "error",
            {
                "words": true,
                "nonwords": false
            }
        ],
        "padding-line-between-statements": [
            "error",
            { "blankLine": "any", "prev": "*", "next": "return" },
            { "blankLine": "any", "prev": ["const", "let"], "next": "*" },
            { "blankLine": "any", "prev": ["const", "let"], "next": ["const", "let"] }
        ],
        "no-shadow": "error",
        "no-useless-return": "error",
        "block-scoped-var": "error",
        "no-else-return": "error",
        "no-undef-init": "error"
    }
}