fix(compiler-core): should apply text transform to if branches

fix #725

packages/compiler-core/src/ast.ts

@@ -92,6 +92,7 @@ export type TemplateChildNode =
   | TextNode
   | CommentNode
   | IfNode
+  | IfBranchNode
   | ForNode
   | TextCallNode
 

packages/compiler-core/src/transform.ts

@@ -329,7 +329,6 @@ export function traverseChildren(
   for (; i < parent.children.length; i++) {
     const child = parent.children[i]
     if (isString(child)) continue
-    context.currentNode = child
     context.parent = parent
     context.childIndex = i
     context.onNodeRemoved = nodeRemoved
@@ -341,6 +340,7 @@ export function traverseNode(
   node: RootNode | TemplateChildNode,
   context: TransformContext
 ) {
+  context.currentNode = node
   // apply transform plugins
   const { nodeTransforms } = context
   const exitFns = []
@@ -380,9 +380,10 @@ export function traverseNode(
     // for container types, further traverse downwards
     case NodeTypes.IF:
       for (let i = 0; i < node.branches.length; i++) {
-        traverseChildren(node.branches[i], context)
+        traverseNode(node.branches[i], context)
       }
       break
+    case NodeTypes.IF_BRANCH:
     case NodeTypes.FOR:
     case NodeTypes.ELEMENT:
     case NodeTypes.ROOT:

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

@@ -16,7 +16,8 @@ export const transformText: NodeTransform = (node, context) => {
   if (
     node.type === NodeTypes.ROOT ||
     node.type === NodeTypes.ELEMENT ||
-    node.type === NodeTypes.FOR
+    node.type === NodeTypes.FOR ||
+    node.type === NodeTypes.IF_BRANCH
   ) {
     // perform the transform on node exit so that all expressions have already
     // been processed.

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

@@ -1,7 +1,7 @@
 import {
   createStructuralDirectiveTransform,
-  traverseChildren,
-  TransformContext
+  TransformContext,
+  traverseNode
 } from '../transform'
 import {
   NodeTypes,
@@ -125,7 +125,7 @@ export function processIf(
         const onExit = processCodegen && processCodegen(sibling, branch, false)
         // since the branch was removed, it will not be traversed.
         // make sure to traverse here.
-        traverseChildren(branch, context)
+        traverseNode(branch, context)
         // call on exit
         if (onExit) onExit()
         // make sure to reset currentNode after traversal to indicate this