Deprecate import-index rule (#1787)

Co-authored-by: Sindre Sorhus <[email protected]>

Author: fisker

configs/recommended.js

@@ -22,7 +22,6 @@ module.exports = {
 		'unicorn/expiring-todo-comments': 'error',
 		'unicorn/explicit-length-check': 'error',
 		'unicorn/filename-case': 'error',
-		'unicorn/import-index': 'off',
 		'unicorn/import-style': 'error',
 		'unicorn/new-for-builtins': 'error',
 		'unicorn/no-abusive-eslint-disable': 'error',

docs/deprecated-rules.md

@@ -1,5 +1,9 @@
 # Deprecated Rules
 
+## import-index
+
+This rule is outdated. JavaScript modules (ESM) do not support importing a directory.
+
 ## no-array-instanceof
 
 This rule was renamed to [`no-instanceof-array`](rules/no-instanceof-array.md) to be more correct.

docs/rules/import-index.md

@@ -6,6 +6,7 @@ const allRulesEnabledConfig = require('./configs/all.js');
 
 const deprecatedRules = createDeprecatedRules({
 	// {ruleId: ReplacementRuleId | ReplacementRuleId[]}, if no replacement, use `{ruleId: []}`
+	'import-index': [],
 	'no-array-instanceof': 'unicorn/no-instanceof-array',
 	'no-fn-reference-in-iterator': 'unicorn/no-array-callback-reference',
 	'no-reduce': 'unicorn/no-array-reduce',

index.js

@@ -64,7 +64,6 @@ Each rule has emojis denoting:
 | [expiring-todo-comments](docs/rules/expiring-todo-comments.md) | Add expiration conditions to TODO comments. | ✅ |  |  |
 | [explicit-length-check](docs/rules/explicit-length-check.md) | Enforce explicitly comparing the `length` or `size` property of a value. | ✅ | 🔧 | 💡 |
 | [filename-case](docs/rules/filename-case.md) | Enforce a case style for filenames. | ✅ |  |  |
-| [import-index](docs/rules/import-index.md) | Enforce importing index files with `.`. |  | 🔧 |  |
 | [import-style](docs/rules/import-style.md) | Enforce specific import styles per module. | ✅ |  |  |
 | [new-for-builtins](docs/rules/new-for-builtins.md) | Enforce the use of `new` for all builtins, except `String`, `Number`, `Boolean`, `Symbol` and `BigInt`. | ✅ | 🔧 |  |
 | [no-abusive-eslint-disable](docs/rules/no-abusive-eslint-disable.md) | Enforce specifying rules to disable in `eslint-disable` comments. | ✅ |  |  |

readme.md

@@ -29,8 +29,6 @@ const eslint = new ESLint({
 			// Annoying
 			'unicorn/no-keyword-prefix': 'off',
 			'unicorn/no-unsafe-regex': 'off',
-			// Outdated
-			'unicorn/import-index': 'off',
 			// Not ready yet
 			'unicorn/prefer-string-replace-all': 'off',
 			'unicorn/prefer-top-level-await': 'off',