feat(core): Add options-sorted-alphabetically lint rule for community nodes (#27886)

Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: garritfra

packages/@n8n/eslint-plugin-community-nodes/README.md

@@ -59,6 +59,7 @@ export default [
 | [node-class-description-icon-missing](docs/rules/node-class-description-icon-missing.md) | Node class description must have an `icon` property defined                                                                                 | ✅ ☑️ |      |    | 💡 |
 | [node-connection-type-literal](docs/rules/node-connection-type-literal.md)               | Disallow string literals in node description `inputs`/`outputs` — use `NodeConnectionTypes` enum instead                                    | ✅ ☑️ |      | 🔧 |    |
 | [node-usable-as-tool](docs/rules/node-usable-as-tool.md)                                 | Ensure node classes have usableAsTool property                                                                                              | ✅ ☑️ |      | 🔧 |    |
+| [options-sorted-alphabetically](docs/rules/options-sorted-alphabetically.md)             | Enforce alphabetical ordering of options arrays in n8n node properties                                                                      |      | ✅ ☑️ |    |    |
 | [package-name-convention](docs/rules/package-name-convention.md)                         | Enforce correct package naming convention for n8n community nodes                                                                           | ✅ ☑️ |      |    | 💡 |
 | [resource-operation-pattern](docs/rules/resource-operation-pattern.md)                   | Enforce proper resource/operation pattern for better UX in n8n nodes                                                                        |      | ✅ ☑️ |    |    |
 

packages/@n8n/eslint-plugin-community-nodes/docs/rules/options-sorted-alphabetically.md

@@ -0,0 +1,63 @@
+# Enforce alphabetical ordering of options arrays in n8n node properties (`@n8n/community-nodes/options-sorted-alphabetically`)
+
+⚠️ This rule _warns_ in the following configs: ✅ `recommended`, ☑️ `recommendedWithoutN8nCloudSupport`.
+
+<!-- end auto-generated rule header -->
+
+## Rule Details
+
+Warns when an `options`-type parameter has its options array not sorted alphabetically by name. Applies to all `type: 'options'` parameters — including `resource`, `operation`, and any other dropdowns.
+
+Alphabetical ordering is an [official n8n UI design requirement](https://docs.n8n.io/integrations/creating-nodes/plan/node-ui-design/#lists) and the most frequently flagged issue in community node reviews.
+
+Comparison is case-insensitive and locale-aware (handles non-ASCII names such as Spanish or Portuguese labels).
+
+## Examples
+
+### ❌ Incorrect
+
+```typescript
+export class MyNode implements INodeType {
+  description: INodeTypeDescription = {
+    displayName: 'My Service',
+    name: 'myService',
+    properties: [
+      {
+        displayName: 'Resource',
+        name: 'resource',
+        type: 'options',
+        options: [
+          { name: 'User', value: 'user' },
+          { name: 'Contact', value: 'contact' }, // out of order
+          { name: 'Project', value: 'project' },
+        ],
+        default: 'user',
+      },
+    ],
+  };
+}
+```
+
+### ✅ Correct
+
+```typescript
+export class MyNode implements INodeType {
+  description: INodeTypeDescription = {
+    displayName: 'My Service',
+    name: 'myService',
+    properties: [
+      {
+        displayName: 'Resource',
+        name: 'resource',
+        type: 'options',
+        options: [
+          { name: 'Contact', value: 'contact' },
+          { name: 'Project', value: 'project' },
+          { name: 'User', value: 'user' },
+        ],
+        default: 'contact',
+      },
+    ],
+  };
+}
+```

packages/@n8n/eslint-plugin-community-nodes/src/plugin.ts

@@ -31,6 +31,7 @@ const configs = {
 			'@n8n/community-nodes/no-credential-reuse': 'error',
 			'@n8n/community-nodes/no-http-request-with-manual-auth': 'error',
 			'@n8n/community-nodes/icon-validation': 'error',
+			'@n8n/community-nodes/options-sorted-alphabetically': 'warn',
 			'@n8n/community-nodes/resource-operation-pattern': 'warn',
 			'@n8n/community-nodes/credential-documentation-url': 'error',
 			'@n8n/community-nodes/node-class-description-icon-missing': 'error',
@@ -53,6 +54,7 @@ const configs = {
 			'@n8n/community-nodes/no-credential-reuse': 'error',
 			'@n8n/community-nodes/no-http-request-with-manual-auth': 'error',
 			'@n8n/community-nodes/icon-validation': 'error',
+			'@n8n/community-nodes/options-sorted-alphabetically': 'warn',
 			'@n8n/community-nodes/credential-documentation-url': 'error',
 			'@n8n/community-nodes/resource-operation-pattern': 'warn',
 			'@n8n/community-nodes/node-class-description-icon-missing': 'error',

packages/@n8n/eslint-plugin-community-nodes/src/rules/index.ts

@@ -14,6 +14,7 @@ import { NoRestrictedImportsRule } from './no-restricted-imports.js';
 import { NodeClassDescriptionIconMissingRule } from './node-class-description-icon-missing.js';
 import { NodeConnectionTypeLiteralRule } from './node-connection-type-literal.js';
 import { NodeUsableAsToolRule } from './node-usable-as-tool.js';
+import { OptionsSortedAlphabeticallyRule } from './options-sorted-alphabetically.js';
 import { PackageNameConventionRule } from './package-name-convention.js';
 import { ResourceOperationPatternRule } from './resource-operation-pattern.js';
 
@@ -24,6 +25,7 @@ export const rules = {
 	'credential-password-field': CredentialPasswordFieldRule,
 	'no-deprecated-workflow-functions': NoDeprecatedWorkflowFunctionsRule,
 	'node-usable-as-tool': NodeUsableAsToolRule,
+	'options-sorted-alphabetically': OptionsSortedAlphabeticallyRule,
 	'package-name-convention': PackageNameConventionRule,
 	'credential-test-required': CredentialTestRequiredRule,
 	'no-credential-reuse': NoCredentialReuseRule,