perf: optimize LRU access in keep-alive (#1316)

ysj16 · web-flow · commit 1f2926a33c78 · 2020-06-11T17:24:50.000-04:00
diff --git a/packages/runtime-core/src/components/KeepAlive.ts b/packages/runtime-core/src/components/KeepAlive.ts
@@ -226,7 +226,7 @@ const KeepAliveImpl = {
         keys.add(key)
         // prune oldest entry
         if (max && keys.size > parseInt(max as string, 10)) {
-          pruneCacheEntry(Array.from(keys)[0])
+          pruneCacheEntry(keys.values().next().value)
         }
       }
       // avoid vnode being unmounted

Original file line number	Diff line number	Diff line change
`@@ -226,7 +226,7 @@ const KeepAliveImpl = {`
`226`	`226`	`keys.add(key)`
`227`	`227`	`// prune oldest entry`
`228`	`228`	`if (max && keys.size > parseInt(max as string, 10)) {`
`229`		`- pruneCacheEntry(Array.from(keys)[0])`
	`229`	`+ pruneCacheEntry(keys.values().next().value)`
`230`	`230`	`}`
`231`	`231`	`}`
`232`	`232`	`// avoid vnode being unmounted`