ts-recommended.js

module.exports = {
  extends: [
    'eslint:recommended',
    'plugin:@typescript-eslint/eslint-recommended',
    'plugin:@typescript-eslint/recommended',
    'plugin:@typescript-eslint/recommended-requiring-type-checking',
    'plugin:@typescript-eslint/strict',
    'prettier',
    'plugin:prettier/recommended',
    'plugin:import/recommended',
    'plugin:import/typescript',
  ],
  parser: '@typescript-eslint/parser',
  parserOptions: {
    project: './tsconfig.json',
    tsconfigRootDir: '.',
    ecmaVersion: 'latest',
  },
  rules: {
    'prettier/prettier': [
      'error',
      {
        bracketSpacing: true,
        trailingComma: 'all',
        singleQuote: true,
        semi: true,
        useTabs: false,
        tabWidth: 2,
        printWidth: 120,
      },
    ],
    eqeqeq: 'error',
    curly: 'error',
    'eol-last': ['error', 'always'],
    'prefer-template': 'error',
    '@typescript-eslint/no-use-before-define': 'error',
    '@typescript-eslint/no-misused-promises': 'error',
    '@typescript-eslint/promise-function-async': 'error',
    '@typescript-eslint/return-await': 'error',
    '@typescript-eslint/no-empty-interface': 'error',
    '@typescript-eslint/no-useless-empty-export': 'error',
    '@typescript-eslint/explicit-function-return-type': ['error', { allowExpressions: true }],
    '@typescript-eslint/explicit-module-boundary-types': 'error',
    '@typescript-eslint/no-explicit-any': ['warn', { fixToUnknown: true }],
    '@typescript-eslint/no-inferrable-types': 'off',
    '@typescript-eslint/no-unused-expressions': 'error',
    '@typescript-eslint/no-unused-vars': [
      'error',
      {
        argsIgnorePattern: '^_',
        varsIgnorePattern: '^_',
      },
    ],
    '@typescript-eslint/naming-convention': [
      'error',
      { selector: 'default', format: ['camelCase'] },

      { selector: 'variableLike', format: ['camelCase'] },
      {
        selector: 'variable',
        format: ['camelCase', 'UPPER_CASE'],
        leadingUnderscore: 'allow',
      },
      {
        selector: ['objectLiteralProperty', 'typeProperty', 'parameterProperty'],
        format: null,
      },
      {
        selector: 'class',
        format: ['PascalCase'],
        leadingUnderscore: 'allow',
      },
      {
        selector: 'function',
        format: ['camelCase', 'PascalCase'],
      },
      {
        selector: 'parameter',
        format: ['camelCase', 'PascalCase'],
        leadingUnderscore: 'allow',
      },
      { selector: 'enumMember', format: ['UPPER_CASE'] },
      { selector: 'memberLike', format: ['camelCase', 'PascalCase', 'UPPER_CASE'] },
      {
        selector: 'memberLike',
        modifiers: ['private'],
        format: ['camelCase'],
        leadingUnderscore: 'allow',
      },
      { selector: 'typeParameter', format: ['PascalCase'], prefix: ['T'] },
      {
        selector: 'typeLike',
        format: ['PascalCase'],
        custom: { regex: '^[IT][A-Z]', match: false },
      },
      {
        selector: 'interface',
        format: ['PascalCase'],
        custom: { regex: '^[IT][A-Z]', match: false },
      },
    ],
    '@typescript-eslint/restrict-template-expressions': [
      'error',
      {
        allowNumber: true,
        allowBoolean: true,
        allowAny: false,
        allowNullish: false,
        allowRegExp: false,
      },
    ],
    '@typescript-eslint/prefer-readonly': 'warn',
    'import/order': [
      'error',
      {
        groups: ['index', 'sibling', 'parent', 'internal', 'external', 'builtin', 'object', 'type'],
      },
    ],
  },
};