.eslintrc

{
    "extends": [
        "eslint:recommended",
        "prettier"
    ],
    "parser": "babel-eslint",
    "parserOptions": {
        "ecmaVersion": 2018
    },
    "env": {
        "es6": true
    },
    "rules": {
        "no-console": [
            "error",
            {
                "allow": [
                    "warn",
                    "error"
                ]
            }
        ],
        // Best Practices
        "curly": "error",
        "eqeqeq": "error",
        "no-eq-null": "error",
        // Variables
        "no-use-before-define": [
            "error",
            "nofunc"
        ],
        // Stylistic Issues
        "brace-style": [
            "error",
            "1tbs",
            {
                "allowSingleLine": true
            }
        ],
        "comma-dangle": [
            "error",
            "always-multiline"
        ],
        "comma-spacing": "error",
        "comma-style": "error",
        "func-call-spacing": "error",
        "indent": [
            "error",
            4,
            {
                "SwitchCase": 1,
                "MemberExpression": 1
            }
        ],
        "key-spacing": [
            "error",
            {
                "mode": "minimum"
            }
        ],
        "keyword-spacing": "error",
        "object-curly-spacing": [
            "error",
            "always"
        ],
        "one-var": [
            "error",
            "never"
        ],
        "quotes": [
            "error",
            "single",
            {
                "allowTemplateLiterals": true
            }
        ],
        "semi": [
            "error",
            "always"
        ],
        "space-before-function-paren": [
            "error",
            {
                "anonymous": "never",
                "named": "never",
                "asyncArrow": "always"
            }
        ],
        "space-infix-ops": "error",
        // ECMAScript 6
        "arrow-body-style": [
            "error",
            "as-needed"
        ],
        "arrow-parens": [
            "error",
            "as-needed"
        ],
        "arrow-spacing": "error",
        "no-duplicate-imports": "error",
        "no-useless-constructor": "error",
        "no-var": "error",
        "prefer-const": "error",
        "prefer-template": "error"
    }
}