fix(keep-alive): handle "0" as cache key (#1622)

fix #1621
2020-07-20 01:31:07 +08:00
parent 8facaefcc3
commit 2deb0c7a74
2 changed files with 59 additions and 2 deletions
--- a/packages/runtime-core/src/components/KeepAlive.ts
+++ b/packages/runtime-core/src/components/KeepAlive.ts
@@ -182,7 +182,8 @@ const KeepAliveImpl = {
    // cache sub tree in beforeMount/Update (i.e. right after the render)
    let pendingCacheKey: CacheKey | null = null
    const cacheSubtree = () => {
-      if (pendingCacheKey) {
+      // fix #1621, the pendingCacheKey could be 0
+      if (pendingCacheKey != null) {
        cache.set(pendingCacheKey, instance.subTree)
      }
    }