eslint.config.mjs

import eslint from '@eslint/js';
import tseslint from 'typescript-eslint';
import eslintConfigPrettier from 'eslint-config-prettier';
import jest from 'eslint-plugin-jest';

export default tseslint.config(
  eslint.configs.recommended,
  ...tseslint.configs.recommended,
  {
    files: ['**/*.ts'],
    languageOptions: {
      parser: tseslint.parser,
      parserOptions: {
        project: './tsconfig.json',
      },
    },
    plugins: {
      '@typescript-eslint': tseslint.plugin,
    },
    rules: {
      // TypeScript specific rules
      '@typescript-eslint/explicit-function-return-type': 'warn',
      '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
      '@typescript-eslint/no-explicit-any': 'warn',
      '@typescript-eslint/no-non-null-assertion': 'warn',

      // General JavaScript/TypeScript rules
      'no-console': 'warn',
      'eqeqeq': ['error', 'always'],
      'curly': ['error', 'all'],
      'prefer-const': 'error',
      'no-var': 'error',
      'object-shorthand': 'error',
      'prefer-template': 'error',
      'no-useless-escape': 0,
      'prefer-destructuring': ['error', { 'object': true, 'array': false }],
    },
  },
  eslintConfigPrettier,
  {
    files: ['test/**/*.ts', 'test/**/*.js'],
    ...jest.configs['flat/recommended'],
    rules: {
      ...jest.configs['flat/recommended'].rules,
      'jest/prefer-expect-assertions': 'off',
    },
  },
  {
    ignores: ['dist/**', 'jest.config.js', '**/*.d.ts', '**/*.js', 'test/**.ts']
  },
);