feat(runtime-vapor): support functional component for defineVaporComponent

Author: zhiyuanzmj

packages/runtime-vapor/src/apiDefineComponent.ts

@@ -1,7 +1,19 @@
-import type { VaporComponent } from './component'
+import type { ObjectVaporComponent, VaporComponent } from './component'
+import { extend, isFunction } from '@vue/shared'
 
 /*! #__NO_SIDE_EFFECTS__ */
-export function defineVaporComponent(comp: VaporComponent): VaporComponent {
+export function defineVaporComponent(
+  comp: VaporComponent,
+  extraOptions?: Omit<ObjectVaporComponent, 'setup'>,
+): VaporComponent {
+  if (isFunction(comp)) {
+    // #8236: extend call and options.name access are considered side-effects
+    // by Rollup, so we have to wrap it in a pure-annotated IIFE.
+    return /*@__PURE__*/ (() =>
+      extend({ name: comp.name }, extraOptions, {
+        setup: comp,
+      }))()
+  }
   // TODO type inference
   comp.__vapor = true
   return comp