feat: add extend to preferred manifest

docs/modules/README.md

@@ -47,6 +47,7 @@ ESLint plugin.
 - [`event-stream`](./event-stream.md)
 - [`execa`](./execa.md)
 - [`express`](./express.md)
+- [`extend`](./extend.md)
 - [`ezspawn`](./ez-spawn.md)
 - [`faker`](./faker.md)
 - [`fast-glob`](./fast-glob.md)

docs/modules/extend.md

@@ -0,0 +1,37 @@
+---
+description: Native alternatives to the extend package for deep cloning and merging objects
+---
+
+# Replacements for `extend`
+
+## `structuredClone` (native)
+
+If you only need to deep clone an object, you can use [`structuredClone`](https://developer.mozilla.org/en-US/docs/Web/API/Window/structuredClone):
+
+```ts
+import extend from 'extend' // [!code --]
+
+extend(true, {}, config) // true [!code --]
+structuredClone(config) // true [!code ++]
+```
+
+## Spread syntax
+
+If you need to merge two shallow objects, you can use [spread syntax](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax#spread_in_object_literals):
+
+```ts
+const obj1 = { foo: 'bar', x: 42 }
+const obj2 = { bar: 'baz', y: 13 }
+
+const mergedObj = { ...obj1, ...obj2 }
+```
+
+## `defu`
+
+If you need to deep merge two objects, you can use [`defu`](https://github.com/unjs/defu):
+
+```ts
+import { defu } from 'defu'
+
+const options = defu(object, ...defaults)
+```

manifests/preferred.json

@@ -258,6 +258,12 @@
       "replacements": ["h3", "tinyhttp", "hono", "elysia"],
       "url": {"type": "e18e", "id": "express"}
     },
+    "extend": {
+      "type": "module",
+      "moduleName": "extend",
+      "replacements": ["structuredClone", "defu"],
+      "url": {"type": "e18e", "id": "extend"}
+    },
     "ez-spawn": {
       "type": "module",
       "moduleName": "ez-spawn",
@@ -2958,6 +2964,12 @@
       "url": {"type": "e18e", "id": "moment"},
       "replacementModule": "day.js"
     },
+    "defu": {
+      "id": "defu",
+      "type": "documented",
+      "url": {"type": "e18e", "id": "extend"},
+      "replacementModule": "defu"
+    },
     "dequal": {
       "id": "dequal",
       "type": "documented",
@@ -3417,6 +3429,15 @@
       },
       "url": {"type": "mdn", "id": "Web/API/Streams_API"}
     },
+    "structuredClone": {
+      "id": "structuredClone",
+      "type": "native",
+      "webFeatureId": {
+        "featureId": "structured-clone",
+        "compatKey": "api.structuredClone"
+      },
+      "url": {"type": "mdn", "id": "Web/API/Window/structuredClone"}
+    },
     "tiny-invariant": {
       "id": "tiny-invariant",
       "type": "documented",