chore: use `const` instead of `let` (#283)

diff --git a/packages/runtime-core/src/warning.ts b/packages/runtime-core/src/warning.ts
index 09cf34e585aeef46c38bf76c94a4fafb6ccbe8ad..7ea32b7cd46f4e61273afccf2fb389fa143d84ff 100644 (file)
--- a/packages/runtime-core/src/warning.ts
+++ b/packages/runtime-core/src/warning.ts
@@ -7,7 +7,7 @@ type ComponentVNode = VNode & {
   type: Component
 }
 
-let stack: VNode[] = []
+const stack: VNode[] = []
 
 type TraceEntry = {
   vnode: ComponentVNode