.eslintrc

{
    "extends": [
        "eslint:recommended",
        "plugin:prettier/recommended"
    ],

    "parserOptions": {
        "ecmaVersion": 8
    },

    "env": {
        "es6": true,
        "node": true
    },

    "rules": {
        "no-console": 0,

        "accessor-pairs": [2, {
            "getWithoutSet": true
        }],
        "block-scoped-var": 2,
        "default-case": 2,
        "dot-notation": [2, {
            "allowKeywords": true,
            "allowPattern": "^[a-z]+(_[a-z]+)+$"
        }],
        "eqeqeq": [2, "allow-null"],
        "guard-for-in": 2,
        "no-alert": 2,
        "no-caller": 2,
        "no-div-regex": 2,
        "no-else-return": 2,
        "no-eq-null": 2,
        "no-eval": 2,
        "no-extra-bind": 2,
        "no-implicit-coercion": [2, {
            "boolean": true,
            "number": true,
            "string": true
        }],
        "no-implied-eval": 2,
        "no-invalid-this": 2,
        "no-iterator": 2,
        "no-lone-blocks": 2,
        "no-loop-func": 2,
        "no-magic-numbers": [2, {
            "ignore": [-1, 0, 1, 2, 100, 255],
            "ignoreArrayIndexes": true
        }],
        "no-multi-str": 2,
        "no-native-reassign": [2, {
            "exceptions": []
        }],
        "no-new-func": 2,
        "no-new-wrappers": 2,
        "no-new": 2,
        "no-octal-escape": 2,
        "no-proto": 2,
        "no-return-assign": [2, "except-parens"],
        "no-script-url": 2,
        "no-self-compare": 2,
        "no-sequences": 2,
        "no-throw-literal": 2,
        "no-unused-expressions": [2, {
            "allowShortCircuit": true,
            "allowTernary": true
        }],
        "no-useless-call": 2,
        "no-useless-concat": 2,
        "no-void": 2,
        "no-warning-comments": [2, {
            "terms": ["todo", "fixme", "xxx"],
            "location": "anywhere"
        }],
        "no-with": 2,
        "radix": [2, "always"],
        "vars-on-top": 2,
        "yoda": [2, "never", {
            "exceptRange": false,
            "onlyEquality": false
        }],

        "init-declarations": [2, "always"],
        "no-catch-shadow": 2,
        "no-label-var": 2,
        "no-shadow-restricted-names": 2,
        "no-undef-init": 2,
        "no-undefined": 2,

        "callback-return": [2, ["callback", "cb", "next"]],
        "global-require": 2,
        "handle-callback-err": [2, "^(err|error)$"],
        "no-new-require": 2,
        "no-path-concat": 2,
        "no-process-exit": 2,
        "no-sync": 2,

        "consistent-this": [2, "that"],
        "func-style": [2, "declaration", {
            "allowArrowFunctions": false
        }],
        "linebreak-style": [2, "unix"],
        "max-nested-callbacks": [2, 5],
        "newline-after-var": [2, "always"],
        "no-array-constructor": 2,
        "no-lonely-if": 2,
        "no-negated-condition": 2,
        "no-nested-ternary": 2,
        "no-new-object": 2,
        "no-underscore-dangle": [2, {
            "allow": []
        }],
        "no-unneeded-ternary": 2,
        "operator-assignment": [2, "always"],
        "spaced-comment": [2, "always"],

        "arrow-body-style": [2, "as-needed"],
        "no-var": 2,
        "object-shorthand": [2, "properties"],
        "prefer-arrow-callback": 2,
        "prefer-const": 2,
        "prefer-spread": 2,
        "prefer-template": 2
    }
}