From: Evan You <yyx990803@gmail.com>
Date: Thu, 20 Sep 2018 06:11:05 +0000 (-0400)
Subject: chore: comments
X-Git-Tag: v3.0.0-alpha.0~1220
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=1ef0d0382966f6d9c05b815256b1cb315858696d;p=thirdparty%2Fvuejs%2Fcore.git

chore: comments
---

diff --git a/packages/vue/src/index.ts b/packages/vue/src/index.ts
index 437f31a5f7..778d33b8e3 100644
--- a/packages/vue/src/index.ts
+++ b/packages/vue/src/index.ts
@@ -18,8 +18,14 @@ class Vue extends Component {
       return
     }
 
+    // in compat mode, h() can take an options object and will convert it
+    // to a 3.x class-based component.
     const vnode = h(options)
+    // the component class is cached on the options object as ._normalized
     const instance = createComponentInstance(vnode, options._normalized, null)
+    // set the instance on the vnode before mounting.
+    // the mount function will skip creating a new instance if it finds an
+    // existing one.
     vnode.children = instance
 
     function mount(el: any) {