design-system-toolkit/eslint.config.mjs at main · ourfuturehealth/design-system-toolkit · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
import js from '@eslint/js';
import globals from 'globals';

/**
 * Root ESLint configuration for the design-system-toolkit monorepo
 *
 * This configuration provides shared JavaScript/TypeScript linting rules
 * across all packages. Individual packages can extend or override these
 * rules in their own eslint.config files.
 *
 * Packages should import and extend this config:
 * ```js
 * import rootConfig from '../../eslint.config.mjs';
 * export default [...rootConfig, { your overrides }];
 * ```
 */
export default [
  {
    ignores: [
      '**/node_modules/**',
      '**/dist/**',
      '**/coverage/**',
      '**/storybook-static/**',
      '**/*.config.js', // Build config files often need different rules
      '**/build/**',
      '**/.turbo/**',
    ],
  },
  js.configs.recommended,
  {
    files: ['**/*.js', '**/*.mjs'],
    languageOptions: {
      ecmaVersion: 2022,
      sourceType: 'module',
      globals: {
        ...globals.browser,
        ...globals.node,
        ...globals.es2021,
      },
    },
    rules: {
      // Possible Problems
      'no-unused-vars': ['error', {
        argsIgnorePattern: '^_',
        varsIgnorePattern: '^_',
      }],
      'no-console': ['warn', { allow: ['warn', 'error'] }],

      // Best Practices
      'eqeqeq': ['error', 'always', { null: 'ignore' }],
      'no-var': 'error',
      'prefer-const': 'error',
      'prefer-arrow-callback': 'warn',

      // Stylistic (aligned with Prettier)
      'quotes': ['error', 'single', { avoidEscape: true }],
      'semi': ['error', 'always'],
      'comma-dangle': ['error', 'always-multiline'],
      'indent': ['error', 2, { SwitchCase: 1 }],
    },
  },
];