.eslintrc

{
    "env": {
        "node": true,
        "es6": true
    },
    "parserOptions": {
        "ecmaVersion": 2018
    },
    "extends": "eslint:recommended",
    "rules": {
        "no-var": 2,
        "prefer-arrow-callback": 2,
        "no-unused-vars": [2, { "argsIgnorePattern": "^(err|req|res|next)$" }],
        "no-mixed-requires": 2,
        "quotes": [2, "single"],
        "no-trailing-spaces": 2,
        "indent": 2,
        "linebreak-style": [2, "unix"],
        "semi": [2, "always"],
        "brace-style": [2, "1tbs", { "allowSingleLine": true }],
        "keyword-spacing": 2,
        "space-before-blocks": 2,
        "space-before-function-paren": [2, { "anonymous": "always", "named": "never" }],
        "no-mixed-spaces-and-tabs": 2,
        "comma-spacing": [2, {"before": false, "after": true}],
        "key-spacing": [2, {"beforeColon": false, "afterColon": true}]
    }
}