From 70d1845c3610486b95cec56786e1cf8b5daa7b5d Mon Sep 17 00:00:00 2001
From: Cathrine Vaage <cathrine.vaage@gmail.com>
Date: Sun, 14 Jun 2020 03:02:19 +0200
Subject: [PATCH] fix(runtime-core): properly change v-on object keys

---
 packages/runtime-core/__tests__/helpers/toHandlers.spec.ts | 4 ++--
 packages/runtime-core/src/helpers/toHandlers.ts            | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/packages/runtime-core/__tests__/helpers/toHandlers.spec.ts b/packages/runtime-core/__tests__/helpers/toHandlers.spec.ts
index 000f9004952..44351b76871 100644
--- a/packages/runtime-core/__tests__/helpers/toHandlers.spec.ts
+++ b/packages/runtime-core/__tests__/helpers/toHandlers.spec.ts
@@ -18,8 +18,8 @@ describe('toHandlers', () => {
     const change = () => {}
 
     expect(toHandlers({ input, change })).toStrictEqual({
-      oninput: input,
-      onchange: change
+      onInput: input,
+      onChange: change
     })
   })
 })
diff --git a/packages/runtime-core/src/helpers/toHandlers.ts b/packages/runtime-core/src/helpers/toHandlers.ts
index a7beede7ee9..38022edd7d9 100644
--- a/packages/runtime-core/src/helpers/toHandlers.ts
+++ b/packages/runtime-core/src/helpers/toHandlers.ts
@@ -1,4 +1,4 @@
-import { isObject } from '@vue/shared'
+import { isObject, capitalize } from '@vue/shared'
 import { warn } from '../warning'
 
 /**
@@ -12,7 +12,7 @@ export function toHandlers(obj: Record<string, any>): Record<string, any> {
     return ret
   }
   for (const key in obj) {
-    ret[`on${key}`] = obj[key]
+    ret[`on${capitalize(key)}`] = obj[key]
   }
   return ret
 }