fix(Transition): fix validate duration (#1188)

packages/runtime-dom/src/components/Transition.ts

@@ -7,7 +7,7 @@ import {
   getCurrentInstance,
   callWithAsyncErrorHandling
 } from '@vue/runtime-core'
-import { isObject } from '@vue/shared'
+import { isObject, toNumber } from '@vue/shared'
 import { ErrorCodes } from 'packages/runtime-core/src/errorHandling'
 
 const TRANSITION = 'transition'
@@ -165,15 +165,15 @@ function normalizeDuration(
   if (duration == null) {
     return null
   } else if (isObject(duration)) {
-    return [toNumber(duration.enter), toNumber(duration.leave)]
+    return [NumberOf(duration.enter), NumberOf(duration.leave)]
   } else {
-    const n = toNumber(duration)
+    const n = NumberOf(duration)
     return [n, n]
   }
 }
 
-function toNumber(val: unknown): number {
-  const res = Number(val || 0)
+function NumberOf(val: unknown): number {
+  const res = toNumber(val)
   if (__DEV__) validateDuration(res)
   return res
 }