.eslintrc.js

module.exports = {
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: 'tsconfig.json',
    sourceType: 'module',
  },
  plugins: [
    '@typescript-eslint/eslint-plugin',
    'eslint-plugin-import-helpers',
    'prettier',
    'import',
  ],
  extends: [
    'plugin:@typescript-eslint/recommended',
    'plugin:prettier/recommended',
    'prettier',
  ],
  root: true,
  env: {
    node: true,
    jest: true,
  },
  ignorePatterns: ['.eslintrc.js'],
  rules: {
    'prettier/prettier': 'error',
    camelcase: 'off',
    '@typescript-eslint/naming-convention': [
      'error',
      {
        selector: 'interface',
        format: ['PascalCase'],
        custom: {
          regex: '^I[A-Z]',
          match: true,
        },
      },
    ],
    'import/prefer-default-export': 'off',
    'import/extensions': [
      'error',
      'ignorePackages',
      {
        ts: 'never',
      },
    ],
    'import-helpers/order-imports': [
      'warn',
      {
        newlinesBetween: 'always',
        groups: ['/^@/', 'module', ['parent', 'sibling', 'index']],
        alphabetize: { order: 'asc', ignoreCase: true },
      },
    ],

    '@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',
  },
  settings: {
    'import/resolver': {
      typescript: {},
    },
  },
};