fix(compiler-core): handle base-transition

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

@@ -10,7 +10,8 @@ import {
   PORTAL,
   RESOLVE_DYNAMIC_COMPONENT,
   SUSPENSE,
-  KEEP_ALIVE
+  KEEP_ALIVE,
+  BASE_TRANSITION
 } from '../../src/runtimeHelpers'
 import {
   CallExpression,
@@ -356,6 +357,30 @@ describe('compiler: element transform', () => {
     assert(`KeepAlive`)
   })
 
+  test('should handle <BaseTransition>', () => {
+    function assert(tag: string) {
+      const { root, node } = parseWithElementTransform(
+        `<${tag}><span /></${tag}>`
+      )
+      expect(root.components.length).toBe(0)
+      expect(root.helpers).toContain(BASE_TRANSITION)
+      expect(node.callee).toBe(CREATE_VNODE)
+      expect(node.arguments).toMatchObject([
+        BASE_TRANSITION,
+        `null`,
+        createObjectMatcher({
+          default: {
+            type: NodeTypes.JS_FUNCTION_EXPRESSION
+          },
+          _compiled: `[true]`
+        })
+      ])
+    }
+
+    assert(`base-transition`)
+    assert(`BaseTransition`)
+  })
+
   test('error on v-bind with no argument', () => {
     const onError = jest.fn()
     parseWithElementTransform(`<div v-bind/>`, { onError })