.eslintrc.js

module.exports = {
    "parserOptions": {
        "ecmaVersion": 8
    },
    "extends": "eslint:recommended",
    "env": {
        "node": true,
        "es6": true
    },
    "rules": {
        "getter-return": "error",
        "no-await-in-loop": "warn",
        "array-callback-return": "error",
        "class-methods-use-this": ["warn", {exceptMethods: ["onText", "onCommand"]}],
        "guard-for-in": "warn",
        "no-caller": "error",
        "no-else-return": "warn",
        "no-eval": "error",
        "no-extra-label": "error",
        "no-eq-null": "error",
        "no-implied-eval": "error",
        "no-invalid-this": "error",
        "no-iterator": "error",
        "no-labels": "warn",
        "no-lone-blocks": "error",
        "no-loop-func": "warn",
        "no-multi-spaces": "error",
        "no-octal-escape": "error",
        "no-proto": "error",
        "no-return-assign": "error",
        "no-return-await": "warn",
        "no-self-compare": "error",
        "no-sequences": "error",
        "no-throw-literal": "error",
        "no-unused-expressions": "error",
        "no-useless-call": "error",
        "no-useless-concat": "error",
        "no-void": "error",
        "no-with": "error",
        "require-await": "warn",
        "yoda": "error",
        "no-undef-init": "error",
        "no-use-before-define": "error",
        "no-new-require": "error",
        "no-path-concat": "error",
        "no-sync": "warn",
        "array-bracket-spacing": ["error", "never"],
        "comma-dangle": ["error", "never"],
        "no-multiple-empty-lines": "error",
        "indent": ["error", 4, {
            "SwitchCase": 1
        }],
        "arrow-parens": ["warn", "as-needed"],
        "no-useless-computed-key": "error",
        "no-useless-constructor": "error",
        "no-var": "error",
        "object-shorthand": "warn",
        "prefer-const": "warn",
        "prefer-rest-params": "warn",
        "no-useless-escape": 0 // Disabled waiting for issue https://github.com/eslint/eslint/issues/9759
    }
};