.eslintrc.json

{
    "parser": "babel-eslint",
    "env": {
        "node": true,
        "es6": true
    },
    "parserOptions": {
        "ecmaVersion": 6,
        "sourceType": "script",
        "ecmaFeatures": {
            "arrowFunctions": true,
            "binaryLiterals": true,
            "classes": true,
            "defaultParams": true,
            "destructuring": true,
            "forOf": true,
            "generators": true,
            "modules": true,
            "objectLiteralComputedProperties": true,
            "objectLiteralDuplicateProperties": true,
            "objectLiteralShorthandMethods": true,
            "objectLiteralShorthandProperties": true,
            "octalLiterals": true,
            "regexUFlag": true,
            "regexYFlag": true,
            "spread": true,
            "superInFunctions": true,
            "templateStrings": true,
            "unicodeCodePointEscapes": true,
            "globalReturn": true,
            "experimentalObjectRestSpread": true,
            "impliedStrict": false,
            "blockBindings": true,
            "jsx": true
        }
    },
    "extends": "eslint:recommended",
    "rules": {
        "curly": ["error"],
        "strict": ["error", "global"],
        "indent": ["error"],
        "arrow-parens": ["warn"],
        "brace-style": ["error", "1tbs"],
        "linebreak-style": ["error", "unix"],
        "quotes": ["error", "single"],
        "semi": ["error", "always"],
        "no-var": ["error"],
        "no-this-before-super": ["error"],
        "max-depth": ["warn"],
        "no-console": ["warn"],
        "constructor-super": ["error"],
        "consistent-return": ["error"],
        "object-curly-spacing": ["error", "always"],
        "spaced-comment": ["warn"],
        "require-await": ["warn"],
        "no-nested-ternary": ["error"],
        "no-unneeded-ternary": ["warn"],
        "no-use-before-define": ["warn"]
    },
    "globals": {
        "app": true
    }
}