.eslintrc.json

{
  "extends": [
    "eslint:recommended",
    "plugin:node/recommended",
    "prettier"
  ],
  "plugins": [
    "node",
    "prettier"
  ],
  "rules": {
    "prettier/prettier": "error",
    "block-scoped-var": "error",
    "eqeqeq": [
      2,
      "allow-null"
    ],
    "no-var": "error",
    "prefer-const": "error",
    "eol-last": "error",
    "prefer-arrow-callback": "error",
    "no-constant-condition": [
      "error",
      {
        "checkLoops": false
      }
    ],
    "no-trailing-spaces": "error",
    "quotes": [
      "warn",
      "single",
      {
        "avoidEscape": true
      }
    ],
    "no-restricted-properties": [
      "error",
      {
        "object": "describe",
        "property": "only"
      },
      {
        "object": "it",
        "property": "only"
      }
    ],
    "node/no-unpublished-import": "off"
  },
  "overrides": [
    {
      "files": [
        "**/*.ts",
        "**/*.tsx"
      ],
      "parser": "@typescript-eslint/parser",
      "extends": [
        "plugin:@typescript-eslint/recommended"
      ],
      "rules": {
        "@typescript-eslint/no-non-null-assertion": "off",
        "@typescript-eslint/no-use-before-define": "off",
        "@typescript-eslint/no-warning-comments": "off",
        "@typescript-eslint/no-empty-function": "off",
        "@typescript-eslint/no-explicit-any": "off",
        "@typescript-eslint/explicit-function-return-type": "off",
        "@typescript-eslint/explicit-module-boundary-types": "off",
        "@typescript-eslint/ban-ts-comment": "warn",
        "@typescript-eslint/ban-types": "off",
        "@typescript-eslint/camelcase": "off",
        "node/no-missing-import": "off",
        "node/no-empty-function": "off",
        "node/no-unsupported-features/es-syntax": "off",
        "node/no-missing-require": "off",
        "node/shebang": "off",
        "no-dupe-class-members": "off",
        "require-atomic-updates": "off"
      },
      "parserOptions": {
        "ecmaVersion": 2020,
        "sourceType": "module"
      }
    }
  ]
}