.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: 'tsconfig.json',
    sourceType: 'module'
  },
  root: true,
  plugins: ['jest', '@typescript-eslint', 'promise'],
  extends: [
    'semistandard',
    'plugin:@typescript-eslint/recommended',
    'plugin:promise/recommended',
    'plugin:prettier/recommended',
    'prettier/@typescript-eslint'
  ],
  env: {
    node: true,
    jest: true
  },
  rules: {
    '@typescript-eslint/no-unused-vars': 'error',
    '@typescript-eslint/no-unused-expressions': [
      'error',
      {
        allowShortCircuit: true,
        allowTernary: true,
        allowTaggedTemplates: true
      }
    ],
    'import/order': [
      'error',
      {
        'newlines-between': 'always',
        alphabetize: {
          order: 'asc',
          caseInsensitive: true
        },
        groups: [
          'builtin',
          'external',
          'internal',
          'parent',
          'sibling',
          'index'
        ],
        pathGroups: [
          {
            pattern: '#**/*',
            group: 'external'
          }
        ]
      }
    ],
    'no-unused-expressions': 'off',
    'no-useless-constructor': 'off'
  }
};