eslint.config.mjs

import tseslint from 'typescript-eslint';
import eslintConfigPrettier from 'eslint-config-prettier';
import { fixupPluginRules } from '@eslint/compat';
import eslintPluginImport from 'eslint-plugin-import';
import eslintjs from '@eslint/js';
import globals from 'globals';

export default [
  eslintConfigPrettier,
  eslintjs.configs.recommended,
  ...tseslint.configs.recommendedTypeChecked,
  {
    files: ['**/*.ts', '**/*.tsx'],
    languageOptions: {
      parser: tseslint.parser,
      parserOptions: {
        project: ['./tsconfig.eslint.json'],
      },
    },
    plugins: {
      '@typescript-eslint': tseslint.plugin,
      import: fixupPluginRules(eslintPluginImport),
    },
    rules: {
      'import/order': 'error',
      'import/first': 'error',
      'import/newline-after-import': 'error',
      'import/no-duplicates': 'error',
      'import/no-unused-modules': 'error',
      '@typescript-eslint/consistent-type-assertions': 'error',
      '@typescript-eslint/no-base-to-string': 'error',
      '@typescript-eslint/no-confusing-void-expression': 'error',
      '@typescript-eslint/no-extraneous-class': 'error',
      '@typescript-eslint/no-unnecessary-boolean-literal-compare': 'error',
      '@typescript-eslint/no-unnecessary-condition': 'error',
      '@typescript-eslint/no-unnecessary-type-arguments': 'error',
      '@typescript-eslint/no-unnecessary-type-assertion': 'error',
      '@typescript-eslint/prefer-for-of': 'error',
      '@typescript-eslint/prefer-includes': 'error',
      '@typescript-eslint/prefer-nullish-coalescing': 'error',
      '@typescript-eslint/prefer-optional-chain': 'error',
      '@typescript-eslint/prefer-reduce-type-parameter': 'error',
      '@typescript-eslint/prefer-string-starts-ends-with': 'error',
      '@typescript-eslint/prefer-ts-expect-error': 'error',
      '@typescript-eslint/strict-boolean-expressions': 'error',
      '@typescript-eslint/switch-exhaustiveness-check': 'error',
    },
  },
  {
    files: ['**/*.test.ts', '**/*.test.tsx', '**/*.test.js', '**/*.test.jsx'],
    languageOptions: {
      globals: {
        ...globals.jest,
      },
    },
  },
];