wip: optimize expose

2020-11-16 11:28:37 -05:00
parent a603d56970
commit b79a06c605
2 changed files with 59 additions and 5 deletions
--- a/packages/runtime-core/src/componentOptions.ts
+++ b/packages/runtime-core/src/componentOptions.ts
@@ -743,11 +743,19 @@ export function applyOptions(
    onUnmounted(unmounted.bind(publicThis))
  }

-  if (!asMixin && expose) {
-    const exposed = instance.exposed || (instance.exposed = proxyRefs({}))
-    expose.forEach(key => {
-      exposed[key] = toRef(publicThis, key as any)
-    })
+  if (isArray(expose)) {
+    if (!asMixin) {
+      if (expose.length) {
+        const exposed = instance.exposed || (instance.exposed = proxyRefs({}))
+        expose.forEach(key => {
+          exposed[key] = toRef(publicThis, key as any)
+        })
+      } else if (!instance.exposed) {
+        instance.exposed = EMPTY_OBJ
+      }
+    } else if (__DEV__) {
+      warn(`The \`expose\` option is ignored when used in mixins.`)
+    }
  }
 }