// ESLint 9 flat config. Scope is deliberately small: this project targets zero
// client JavaScript (CLAUDE.md, AGENTS.md §7), so the only JS/TS here is build
// configuration, site data, and the occasional island. Rules exist to catch
// mistakes, not to impose style — Prettier owns formatting.
//
// `typescript-eslint` is here because .astro frontmatter IS TypeScript, so the
// plugin cannot parse a single component without it. It runs unconfigured for
// type-awareness on purpose: `astro check` already does the type checking, and
// duplicating it here would be slower and would disagree at the edges.

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

export default [
  { ignores: ['dist/**', 'node_modules/**', '.astro/**', 'docs/reference/**'] },

  js.configs.recommended,
  ...tseslint.configs.recommended,
  ...astro.configs.recommended,

  {
    files: ['**/*.{js,mjs,ts}', '**/*.astro'],
    languageOptions: {
      ecmaVersion: 2023,
      sourceType: 'module',
      globals: { ...globals.browser, ...globals.node },
    },
    rules: {
      // A stray console.log in a static build is dead weight shipped to nobody.
      'no-console': ['warn', { allow: ['warn', 'error'] }],
      eqeqeq: ['error', 'always'],
      'prefer-const': 'error',
      '@typescript-eslint/no-unused-vars': [
        'error',
        { argsIgnorePattern: '^_' },
      ],
    },
  },
];