From: edison <daiwei521@126.com>
Date: Tue, 15 Sep 2020 00:56:53 +0000 (+0800)
Subject: chore(compiler-core): define `child` if necessary. (#2033)
X-Git-Tag: v3.0.0-rc.11~18
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b29bc0d69413c689b15e1c10e13308d1e6da3da7;p=thirdparty%2Fvuejs%2Fcore.git

chore(compiler-core): define `child` if necessary. (#2033)
---

diff --git a/packages/compiler-core/src/transform.ts b/packages/compiler-core/src/transform.ts
index 4495d49809..4650c36855 100644
--- a/packages/compiler-core/src/transform.ts
+++ b/packages/compiler-core/src/transform.ts
@@ -287,8 +287,8 @@ export function transform(root: RootNode, options: TransformOptions) {
 function createRootCodegen(root: RootNode, context: TransformContext) {
   const { helper } = context
   const { children } = root
-  const child = children[0]
   if (children.length === 1) {
+    const child = children[0]
     // if the single child is an element, turn it into a block.
     if (isSingleElementRoot(root, child) && child.codegenNode) {
       // single element root is never hoisted so codegenNode will never be