From 7f067fcd760d80ceee79af6761b0b7d86b61a197 Mon Sep 17 00:00:00 2001
From: Eduardo San Martin Morote <posva13@gmail.com>
Date: Fri, 21 Apr 2017 19:01:42 +0200
Subject: [PATCH] Allow slot names to be numbers

Closes #5480
---
 src/core/instance/render-helpers/resolve-slots.js  |  2 +-
 .../unit/features/component/component-slot.spec.js | 14 ++++++++++++++
 2 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/core/instance/render-helpers/resolve-slots.js b/src/core/instance/render-helpers/resolve-slots.js
index 19c7dcfb6a5..48ead8fcf55 100644
--- a/src/core/instance/render-helpers/resolve-slots.js
+++ b/src/core/instance/render-helpers/resolve-slots.js
@@ -18,7 +18,7 @@ export function resolveSlots (
     // named slots should only be respected if the vnode was rendered in the
     // same context.
     if ((child.context === context || child.functionalContext === context) &&
-        child.data && (name = child.data.slot)) {
+        child.data && (name = child.data.slot) != null) {
       const slot = (slots[name] || (slots[name] = []))
       if (child.tag === 'template') {
         slot.push.apply(slot, child.children)
diff --git a/test/unit/features/component/component-slot.spec.js b/test/unit/features/component/component-slot.spec.js
index a4e8621a595..71c222500a6 100644
--- a/test/unit/features/component/component-slot.spec.js
+++ b/test/unit/features/component/component-slot.spec.js
@@ -57,6 +57,20 @@ describe('Component slot', () => {
     }).then(done)
   })
 
+  it('named slot with 0 as a number', done => {
+    mount({
+      childTemplate: '<div><slot :name="0"></slot></div>',
+      parentContent: '<p :slot="0">{{ msg }}</p>'
+    })
+    expect(child.$el.tagName).toBe('DIV')
+    expect(child.$el.children[0].tagName).toBe('P')
+    expect(child.$el.children[0].textContent).toBe('parent message')
+    vm.msg = 'changed'
+    waitForUpdate(() => {
+      expect(child.$el.children[0].textContent).toBe('changed')
+    }).then(done)
+  })
+
   it('fallback content', () => {
     mount({
       childTemplate: '<div><slot><p>{{msg}}</p></slot></div>'