perf(reactivity): avoid triggering Map.has twice on non-reactive keys (#1972)

2020-08-26 23:41:18 +08:00
parent d5c4f6ed4d
commit 97bc30edad
2 changed files with 14 additions and 1 deletions
--- a/packages/reactivity/src/collectionHandlers.ts
+++ b/packages/reactivity/src/collectionHandlers.ts
@@ -59,7 +59,9 @@ function has(this: CollectionTypes, key: unknown, isReadonly = false): boolean {
    !isReadonly && track(rawTarget, TrackOpTypes.HAS, key)
  }
  !isReadonly && track(rawTarget, TrackOpTypes.HAS, rawKey)
-  return target.has(key) || target.has(rawKey)
+  return key === rawKey
+    ? target.has(key)
+    : target.has(key) || target.has(rawKey)
 }

 function size(target: IterableCollections, isReadonly = false) {