wip: handle built-in components

Author: edison1105

packages/compiler-vapor/src/generators/component.ts

@@ -39,6 +39,7 @@ import { genEventHandler } from './event'
 import { genDirectiveModifiers, genDirectivesForElement } from './directive'
 import { genBlock } from './block'
 import { genModelHandler } from './vModel'
+import { isBuiltInComponent } from '../transforms/transformElement'
 
 export function genCreateComponent(
   operation: CreateComponentIRNode,
@@ -90,6 +91,13 @@ export function genCreateComponent(
     } else if (operation.asset) {
       return toValidAssetId(operation.tag, 'component')
     } else {
+      const { tag } = operation
+      const builtInTag = isBuiltInComponent(tag)
+      if (builtInTag) {
+        // @ts-expect-error
+        helper(builtInTag)
+        return `_${builtInTag}`
+      }
       return genExpression(
         extend(createSimpleExpression(operation.tag, false), { ast: null }),
         context,

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

@@ -109,6 +109,12 @@ function transformComponentElement(
       asset = false
     }
 
+    const builtInTag = isBuiltInComponent(tag)
+    if (builtInTag) {
+      tag = builtInTag
+      asset = false
+    }
+
     const dotIndex = tag.indexOf('.')
     if (dotIndex > 0) {
       const ns = resolveSetupReference(tag.slice(0, dotIndex), context)
@@ -435,3 +441,9 @@ function mergePropValues(existing: IRProp, incoming: IRProp) {
 function isComponentTag(tag: string) {
   return tag === 'component' || tag === 'Component'
 }
+
+export function isBuiltInComponent(tag: string): string | undefined {
+  if (tag === 'Transition' || tag === 'transition') {
+    return 'Transition'
+  }
+}