docs: Publish v9.15.0 release highlights

src/content/blog/2024-11-15-eslint-v9.15.0-released.md

@@ -3,9 +3,8 @@ layout: post
 title: ESLint v9.15.0 released
 teaser: "We just pushed ESLint v9.15.0, which is a minor release upgrade of ESLint. This release adds some new features and fixes several bugs found in the previous release."
 image: release-notes-minor.png
-draft: true
 authors:
-  - eslintbot
+  - mdjermanovic
 categories:
   - Release Notes
 tags:
@@ -14,7 +13,56 @@ tags:
 
 
 
+This release updates the `@eslint/plugin-kit` dependency to the latest version 0.2.3 which includes the fix for security advisory [GHSA-7q7g-4xm8-89cq](https://github.com/eslint/rewrite/security/advisories/GHSA-7q7g-4xm8-89cq).
 
+## Highlights
+
+### `meta.defaultOptions`
+
+Rules can now specify [default options](/docs/latest/extend/custom-rules#option-defaults). ESLint will recursively merge any user-provided options elements on top of the default elements.
+
+This feature makes it easier to work with options in rules.
+
+```js
+// my-rule.js
+export default {
+    meta: {
+        defaultOptions: [{
+            alias: "basic",
+            ignoreClassFields: false
+        }],
+        schema: [{
+            type: "object",
+            properties: {
+                alias: {
+                    type: "string"
+                },
+                ignoreClassFields: {
+                    type: "boolean"
+                }
+            },
+            additionalProperties: false
+        }]
+    },
+    create(context) {
+
+        // `context.options` is guaranteed to be an array with a single object
+        // that has a string property `alias` and a boolean property `ignoreClassFields`.
+        // If the rule is enabled with no options specified in the configuration file,
+        // `alias` will be `"basic"`, and `ignoreClassFields` will be `false`.
+        const [{ alias, ignoreClassFields }] = context.options;
+
+        return { /* ... */ };
+    }
+};
+```
+
+This feature also allows document generators, other tools and integrations, and end users to easily find the default options for rules.
+
+### Other notable changes
+
+* Custom [languages](/docs/latest/extend/languages) can now provide the `normalizeLanguageOptions(languageOptions)` method. The return value will be used as `languageOptions` when calling `parse()`, `createSourceCode()`, and `applyLanguageOptions()` methods and as the value of `context.languageOptions` property in rules.
+* The [`no-useless-computed-key`](/docs/latest/rules/no-useless-computed-key) rule now fully supports object destructuring patterns.