From 63e46108330602872f305e245dc6983fa97859a0 Mon Sep 17 00:00:00 2001
From: skycurtain <skycurtain@163.com>
Date: Wed, 4 Mar 2026 14:48:22 +0800
Subject: [PATCH] =?UTF-8?q?fix(array-tracer):=20=E4=BF=AE=E5=A4=8D?=
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在构建初始数组时，同步更新metadata.length，确保元数据与数组实际状态一致。
---
 tracers.ts/src/tracers/array-tracer.ts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/tracers.ts/src/tracers/array-tracer.ts b/tracers.ts/src/tracers/array-tracer.ts
index 8e34016..d314bee 100644
--- a/tracers.ts/src/tracers/array-tracer.ts
+++ b/tracers.ts/src/tracers/array-tracer.ts
@@ -23,6 +23,7 @@ export const createArrayTracer = <T extends JsonValue>(
 
   const buildInitial = () => {
     if (!!initial) {
+      metadata.length = initial.length;
       return [...initial];
     }
     if (!!walker) {
@@ -30,6 +31,7 @@ export const createArrayTracer = <T extends JsonValue>(
       walker({
         add: (item) => {
           initial.push(item);
+          metadata.length++;
         },
       });
       return initial;