.eslintrc.js

module.exports = {
  env: {
    browser: true,
    es2021: true,
    node: true,
  },
  extends: ["eslint:recommended", "prettier"],
  parserOptions: {
    ecmaVersion: "latest",
    sourceType: "module",
  },
  rules: {
    "arrow-body-style": ["error", "as-needed"],
    "constructor-super": "error",
    curly: ["error", "all"],
    "dot-notation": "error",
    eqeqeq: "error",
    "max-classes-per-file": ["error", 1],
    "no-const-assign": "error",
    "no-dupe-class-members": "error",
    "no-dupe-keys": "error",
    "no-duplicate-case": "error",
    "no-else-return": "error",
    "no-empty": "error",
    "no-invalid-this": "error",
    "no-irregular-whitespace": "error",
    "no-new-func": "error",
    "no-proto": "error",
    "no-redeclare": "error",
    "no-return-await": "warn",
    "no-this-before-super": "error",
    "no-undef": "off",
    "no-unreachable": "error",
    "no-unsafe-negation": "error",
    "no-unused-vars": "off",
    "no-var": "error",
    "prefer-arrow-callback": "error",
    "prefer-const": ["error", { destructuring: "all" }],
    "prefer-object-spread": "error",
    "prefer-rest-params": "error",
    "prefer-template": "error",
    "valid-typeof": "error",
  },
};