.eslintrc.js

module.exports = {
  root: true,
  env: {
    browser: true,
    node: true
  },
  extends: [
    '@nuxtjs/eslint-config-typescript',
    'plugin:nuxt/recommended'
  ],
  plugins: [
  ],
  // add your custom rules here
  // https://github.com/vuejs/eslint-plugin-vue/tree/4.x
  // The TypeScript ESLint Rules are added manually, because extending it leads to parsing errors.
  rules: {
    'no-console': process.env.NODE_ENV === 'production' ? ['error', { allow: ['warn', 'error'] }] : 'off',
    'no-debugger': process.env.NODE_ENV === 'production' ? 'error' : 'off',
    'object-shorthand': ['error', 'consistent-as-needed'],
    'space-before-function-paren': ['error', { anonymous: 'always', named: 'never', asyncArrow: 'always' }],
    'operator-linebreak': ['error', 'before'],
    'no-useless-return': 'off',
    // TypeScript ESLint Plugin: `eslint-recommended` rules
    // (disable ESLint base rules as they can report incorrect errors).
    // Copied from `node_modules/@typescript-eslint/eslint-plugin/dist/configs/eslint-recommended.js`.
    'constructor-super': 'off',
    'getter-return': 'off',
    'no-const-assign': 'off',
    'no-dupe-args': 'off',
    'no-dupe-class-members': 'off',
    'no-dupe-keys': 'off',
    'no-func-assign': 'off',
    'no-import-assign': 'off',
    'no-new-symbol': 'off',
    'no-obj-calls': 'off',
    'no-redeclare': 'off',
    'no-setter-return': 'off',
    'no-this-before-super': 'off',
    'no-undef': 'off',
    'no-unreachable': 'off',
    'no-unsafe-negation': 'off',
    'no-var': 'error',
    'prefer-const': 'error',
    'prefer-rest-params': 'error',
    'prefer-spread': 'error',
    'valid-typeof': 'off',
    // TypeScript ESLint Plugin: `recommended` rules.
    // Copied from `node_modules/@typescript-eslint/eslint-plugin/dist/configs/recommended.js`.
    '@typescript-eslint/adjacent-overload-signatures': 'error',
    '@typescript-eslint/ban-ts-comment': 'error',
    '@typescript-eslint/ban-types': 'error',
    'no-array-constructor': 'off',
    '@typescript-eslint/no-array-constructor': 'error',
    'no-empty-function': 'off',
    '@typescript-eslint/no-empty-function': 'error',
    '@typescript-eslint/no-empty-interface': 'error',
    '@typescript-eslint/no-explicit-any': 'warn',
    '@typescript-eslint/no-extra-non-null-assertion': 'error',
    'no-extra-semi': 'off',
    '@typescript-eslint/no-extra-semi': 'error',
    '@typescript-eslint/no-inferrable-types': 'error',
    'no-loss-of-precision': 'off',
    '@typescript-eslint/no-loss-of-precision': 'error',
    '@typescript-eslint/no-misused-new': 'error',
    '@typescript-eslint/no-namespace': 'error',
    '@typescript-eslint/no-non-null-asserted-optional-chain': 'error',
    '@typescript-eslint/no-non-null-assertion': 'warn',
    '@typescript-eslint/no-this-alias': 'error',
    '@typescript-eslint/no-unnecessary-type-constraint': 'error',
    'no-unused-vars': 'off',
    '@typescript-eslint/no-unused-vars': 'warn',
    '@typescript-eslint/no-var-requires': 'error',
    '@typescript-eslint/prefer-as-const': 'error',
    '@typescript-eslint/prefer-namespace-keyword': 'error',
    '@typescript-eslint/triple-slash-reference': 'error'
  }
}