.eslintrc.json

{
  "extends": "eslint:recommended",
  "parserOptions": {
    "ecmaVersion": 2019
  },
  "env": {
    "node": true,
    "es6": true
  },
  "rules": {
    "getter-return": "error",
    "no-console": "off",
    "no-template-curly-in-string": "error",
    
    "array-callback-return": "error",
    "block-scoped-var": "error",
    "curly": ["error", "multi-line"],
    "eqeqeq": "error",
    "no-eval": "error",
    "no-extend-native": "error",
    "no-fallthrough": "off",
    "no-floating-decimal": "error",
    "no-implicit-coercion": "error",
    "no-implied-eval": "error",
    "no-invalid-this": "error",
    "no-iterator": "error",
    "no-labels": "error",
    "no-lone-blocks": "error",
    "no-new-func": "error",
    "no-new-wrappers": "error",
    "no-proto": "error",
    "no-return-assign": "error",
    "no-self-compare": "error",
    "no-sequences": "error",
    "no-throw-literal": "error",
    "no-unused-expressions": "error",
    "no-void": "error",
    "no-warning-comments": "warn",
    "no-with": "error",
    "radix": "error",
    "no-undefined": "error",
    "no-use-before-define": ["error", {"functions": false, "classes": false, "variables": true}],
    "callback-return": "error",
    "handle-callback-err": "error",
    "no-buffer-constructor": "error",
    "no-path-concat": "error",
    "no-process-env": "error",
    "no-unused-vars": ["warn", {"args": "none"}],
    
    "no-var": "error",
    "prefer-arrow-callback": "warn",
    "semi": "error",
    "linebreak-style": ["warn", "windows"],
    "no-bitwise": "error",
    "one-var": ["warn", "never"],
    "quotes": ["error", "single", {"allowTemplateLiterals": true}]
  }
}