chore: consolidate new foundation and archive v1 (#1495)

v1/packages/mosaic/framework/skills/vueuse-functions/references/refDefault.md

@@ -0,0 +1,33 @@
+---
+category: Reactivity
+---
+
+# refDefault
+
+Apply default value to a ref.
+
+## Usage
+
+```ts
+import { refDefault, useStorage } from '@vueuse/core';
+
+const raw = useStorage('key');
+const state = refDefault(raw, 'default');
+
+raw.value = 'hello';
+console.log(state.value); // hello
+
+raw.value = undefined;
+console.log(state.value); // default
+```
+
+## Type Declarations
+
+```ts
+/**
+ * Apply default value to a ref.
+ *
+ * @__NO_SIDE_EFFECTS__
+ */
+export declare function refDefault<T>(source: Ref<T | undefined | null>, defaultValue: T): Ref<T>;
+```