.eslintrc.js

module.exports = {
  extends: [
    'airbnb-base',
    'plugin:prettier/recommended',
    'plugin:@typescript-eslint/recommended'
  ],

  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: './tsconfig.json'
  },

  "settings": {
    "import/resolver": {
      "node": {
        "extensions": [".js", ".jsx", ".ts", ".tsx"]
      }
    }
  },

  overrides: [
    {
      files: [
        'test/**/*.ts'
      ],
      env: {
        jest: true
      }
    }
  ],

  plugins: ['prettier'],

  rules: {
    'prettier/prettier': 'error',

    // Does not play well with TypeScript
    'no-useless-constructor': 'off',

    // Override AirBnb to allow for-of, since this is on the server so regenerator-runtime
    // overhead is trivial
    'no-restricted-syntax': [
      'error',
      {
        selector: 'ForInStatement',
        message:
          'for..in loops iterate over the entire prototype chain, which is virtually never what you want. Use Object.{keys,values,entries}, and iterate over the resulting array.',
      },
      {
        selector: 'LabeledStatement',
        message:
          'Labels are a form of GOTO; using them makes code confusing and hard to maintain and understand.',
      },
      {
        selector: 'WithStatement',
        message:
          '`with` is disallowed in strict mode because it makes code impossible to predict and optimize.',
      },
    ],
  }
};