fix(compiler-sfc): support resolving components from props (#8785)

Author: edison1105

packages/compiler-core/__tests__/transforms/transformElement.spec.ts

@@ -152,6 +152,28 @@ describe('compiler: element transform', () => {
     expect(node.tag).toBe(`Foo.Example`)
   })
 
+  test('resolve namespaced component from props bindings (inline)', () => {
+    const { root, node } = parseWithElementTransform(`<Foo.Example/>`, {
+      inline: true,
+      bindingMetadata: {
+        Foo: BindingTypes.PROPS
+      }
+    })
+    expect(root.helpers).not.toContain(RESOLVE_COMPONENT)
+    expect(node.tag).toBe(`_unref(__props["Foo"]).Example`)
+  })
+
+  test('resolve namespaced component from props bindings (non-inline)', () => {
+    const { root, node } = parseWithElementTransform(`<Foo.Example/>`, {
+      inline: false,
+      bindingMetadata: {
+        Foo: BindingTypes.PROPS
+      }
+    })
+    expect(root.helpers).not.toContain(RESOLVE_COMPONENT)
+    expect(node.tag).toBe('_unref($props["Foo"]).Example')
+  })
+
   test('do not resolve component from non-script-setup bindings', () => {
     const bindingMetadata = {
       Example: BindingTypes.SETUP_MAYBE_REF

packages/compiler-core/src/transforms/transformElement.ts

@@ -385,6 +385,13 @@ function resolveSetupReference(name: string, context: TransformContext) {
         `${context.helperString(UNREF)}(${fromMaybeRef})`
       : `$setup[${JSON.stringify(fromMaybeRef)}]`
   }
+
+  const fromProps = checkType(BindingTypes.PROPS)
+  if (fromProps) {
+    return `${context.helperString(UNREF)}(${
+      context.inline ? '__props' : '$props'
+    }[${JSON.stringify(fromProps)}])`
+  }
 }
 
 export type PropsExpression = ObjectExpression | CallExpression | ExpressionNode