eslint.config.js

import eslint from '@eslint/js';
import tseslint from 'typescript-eslint';
import globals from 'globals';

export default tseslint.config(
  // Ignore patterns
  {
    ignores: ['node_modules/**', 'extension/dist/**', 'web-ext-artifacts/**', 'tests/**'],
  },

  // Base ESLint recommended rules
  eslint.configs.recommended,

  // TypeScript ESLint recommended rules
  ...tseslint.configs.recommendedTypeChecked,

  // Project-specific configuration
  {
    files: ['extension/src/**/*.ts'],
    languageOptions: {
      ecmaVersion: 2020,
      sourceType: 'module',
      globals: {
        ...globals.browser,
        ...globals.es2020,
        // WebExtensions globals
        browser: 'readonly',
        chrome: 'readonly',
      },
      parserOptions: {
        project: './tsconfig.json',
      },
    },
    rules: {
      '@typescript-eslint/no-unused-vars': ['error', { argsIgnorePattern: '^_' }],
      '@typescript-eslint/explicit-function-return-type': [
        'warn',
        {
          allowExpressions: true,
          allowTypedFunctionExpressions: true,
        },
      ],
      '@typescript-eslint/no-explicit-any': 'error',
      '@typescript-eslint/no-unsafe-argument': 'error',
      '@typescript-eslint/no-unsafe-assignment': 'error',
      '@typescript-eslint/no-unsafe-member-access': 'error',
      '@typescript-eslint/no-unsafe-call': 'error',
      '@typescript-eslint/no-unsafe-return': 'error',
      eqeqeq: ['error', 'always'],
      'no-var': 'error',
      'prefer-const': 'error',
    },
  }
);