.eslintrc.js

module.exports = {
    extends: ['plugin:@typescript-eslint/recommended', 'prettier', 'plugin:prettier/recommended'],
    parserOptions: {
      sourceType: 'module',
      ecmaVersion: 2018,
      project: './tsconfig.test.json'
    },
    env: {
      jest: true,
    },
    globals: {
      browser: true,
      page: true,
    },
    plugins: ['jest', 'unused-imports'],
    rules: {
      'array-bracket-newline': ['error', 'consistent'],
      strict: ['error', 'safe'],
      'block-scoped-var': 'error',
      complexity: 'warn',
      'default-case': 'error',
      'dot-notation': 'warn',
      eqeqeq: 'error',
      'guard-for-in': 'warn',
      'linebreak-style': ['warn', 'unix'],
      'no-alert': 'error',
      'no-case-declarations': 'error',
      'no-console': 'error',
      'no-constant-condition': 'error',
      'no-div-regex': 'error',
      'no-empty': 'warn',
      'no-empty-pattern': 'error',
      'no-implicit-coercion': 'error',
      'prefer-arrow-callback': 'warn',
      'no-labels': 'error',
      'no-loop-func': 'error',
      'no-nested-ternary': 'warn',
      'no-script-url': 'error',
      'no-warning-comments': 'warn',
      'quote-props': ['error', 'as-needed'],
      'require-yield': 'error',
      'max-nested-callbacks': ['error', 4],
      'max-depth': ['error', 5],
      'space-before-function-paren': [
        'error',
        {
          anonymous: 'never',
          named: 'never',
          asyncArrow: 'always',
        },
      ],
      'padding-line-between-statements': [
        'error',
        { blankLine: 'always', prev: '*', next: 'function' },
        { blankLine: 'always', prev: '*', next: 'return' },
      ],
      'no-useless-constructor': 'off',
      'no-dupe-class-members': 'off',
      'no-unused-expressions': 'off',
      curly: ['error', 'multi-line'],
      'object-curly-spacing': ['error', 'always'],
      'comma-dangle': ['error', 'always-multiline'],
      '@typescript-eslint/no-useless-constructor': 'error',
      '@typescript-eslint/no-unused-expressions': 'error',
      '@typescript-eslint/ban-ts-comment': [
        'error',
        {
          'ts-expect-error': 'allow-with-description',
          'ts-ignore': 'allow-with-description',
          'ts-nocheck': 'allow-with-description',
          'ts-check': 'allow-with-description',
          minimumDescriptionLength: 6,
        },
      ],
      "require-await": "off",
      "@typescript-eslint/promise-function-async": "error",
      "@typescript-eslint/require-await": "off",
      "@typescript-eslint/no-unused-vars": "off",
      "unused-imports/no-unused-imports": "error",
      "@typescript-eslint/no-non-null-assertion": "off",
      "unused-imports/no-unused-vars": [
        "warn",
        { "vars": "all", "varsIgnorePattern": "^_", "args": "after-used", "argsIgnorePattern": "^_" }
      ]
    },
    overrides: [
      {
        files: ['*.spec.ts'],
        rules: {
          'max-nested-callbacks': ['error', 10], // allow describe/it nesting
        },
      },
    ],
  }