module.exports = {
  extends: ['eslint:recommended'],
  env: {
    browser: true,
    node: true,
    es6: true,
  },
  parserOptions: {
    ecmaVersion: 2022,
    sourceType: 'module',
  },
  rules: {
    // 错误级别规则
    'no-console': ['warn', { allow: ['warn', 'error', 'info'] }],
    'no-debugger': 'warn',
    'no-unused-vars': ['warn', { argsIgnorePattern: '^_', varsIgnorePattern: '^_' }],
    
    // 代码风格规则
    'arrow-body-style': ['error', 'as-needed'],
    'prefer-const': 'error',
    'no-var': 'error',
    'eqeqeq': ['error', 'always', { null: 'ignore' }],
    'no-multiple-empty-lines': ['error', { max: 1, maxEOF: 1 }],
    'no-trailing-spaces': 'error',
    
    // 其他规则
    'no-restricted-syntax': [
      'error',
      {
        selector: 'ForInStatement',
        message: 'for..in loops iterate over the entire prototype chain, which is virtually never what you want. Use Object.{keys,values,entries}, and iterate over the resulting array.',
      },
    ],
  },
  overrides: [
    {
      files: ['*.ts', '*.tsx'],
      parser: '@typescript-eslint/parser',
      extends: [
        'plugin:@typescript-eslint/recommended',
      ],
      rules: {
        '@typescript-eslint/no-unused-vars': ['warn', { argsIgnorePattern: '^_', varsIgnorePattern: '^_' }],
        'no-unused-vars': 'off',
      },
    },
  ],
};