fix(TransitionGroup): reset prevChildren to prevent memory leak

edison1105 · edison1105 · commit b6800b98af91 · 2025-04-10T08:49:27.000+08:00
diff --git a/packages/runtime-dom/src/components/TransitionGroup.ts b/packages/runtime-dom/src/components/TransitionGroup.ts
@@ -81,6 +81,7 @@ const TransitionGroupImpl: ComponentOptions = /*@__PURE__*/ decorate({
           moveClass,
         )
       ) {
+        prevChildren = []
         return
       }
 
@@ -110,6 +111,7 @@ const TransitionGroupImpl: ComponentOptions = /*@__PURE__*/ decorate({
         })
         el.addEventListener('transitionend', cb)
       })
+      prevChildren = []
     })
 
     return () => {

Original file line number	Diff line number	Diff line change
`@@ -81,6 +81,7 @@ const TransitionGroupImpl: ComponentOptions = /@__PURE__/ decorate({`
`81`	`81`	`moveClass,`
`82`	`82`	`)`
`83`	`83`	`) {`
	`84`	`+ prevChildren = []`
`84`	`85`	`return`
`85`	`86`	`}`
`86`	`87`
`@@ -110,6 +111,7 @@ const TransitionGroupImpl: ComponentOptions = /@__PURE__/ decorate({`
`110`	`111`	`})`
`111`	`112`	`el.addEventListener('transitionend', cb)`
`112`	`113`	`})`
	`114`	`+ prevChildren = []`
`113`	`115`	`})`
`114`	`116`
`115`	`117`	`return () => {`