.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: 'tsconfig.json',
    tsconfigRootDir : __dirname, 
    sourceType: 'module',
  },
  plugins: ['@typescript-eslint/eslint-plugin'],
  extends: [
    'plugin:@typescript-eslint/recommended',
    'plugin:prettier/recommended',
  ],
  root: true,
  env: {
    node: true,
    jest: true,
  },
  ignorePatterns: ['.eslintrc.js'],
  rules: {
    eqeqeq: 'error',
    'no-lone-blocks': 'error',
    'no-undefined': 'error',
    'no-bitwise': 'warn',
    'no-useless-concat': 'error',
    'no-useless-return': 'error',
    'no-lonely-if': 'warn',
    'no-duplicate-imports': ['error', { includeExports: true }],
    'no-else-return': ['error', { allowElseIf: false }],
    'no-self-compare': 'error',
    'no-throw-literal': 'error',
    'no-nested-ternary': 'error',
    'no-new-object': 'error',
    'no-unneeded-ternary': 'error',
    'no-useless-constructor': 'off',
    'spaced-comment': ['error', 'always'],
    'arrow-body-style': ['error', 'as-needed'],
    'guard-for-in': 'error',
    'newline-before-return': 'error',
    '@typescript-eslint/interface-name-prefix': 'off',
    '@typescript-eslint/explicit-function-return-type': 'off',
    '@typescript-eslint/explicit-module-boundary-types': 'off',
    '@typescript-eslint/no-explicit-any': 'off',
    '@typescript-eslint/no-useless-constructor': 'error',
    '@typescript-eslint/prefer-for-of': 'error',
    '@typescript-eslint/ban-ts-comment': [
      'error',
      {
        'ts-ignore': 'allow-with-description',
        minimumDescriptionLength: 5,
      },
    ],
    '@typescript-eslint/no-unused-vars': [
      'error',
      { argsIgnorePattern: '^_', varsIgnorePattern: '^_$' },
    ],
  },
};