parentComponent.ctx.deactivate is not a function while using stable v-for and <keep-alive>

[yuanruixin]

Vue version

3.5.13

Link to minimal reproduction

Vue SFC Playground

Steps to reproduce

step1: click tab2

When the v-for directive is used on , if it is a constant , an error will be reported when switching tabs.

What is expected?

no error

What is actually happening?

parentComponent.ctx.deactivate is not a function

System Info

Any additional comments?

No response

[1want]

1. for...in...的迭代体必需是一个对象，v-for循环同理。你的maxLength是基本数据类型
2. 你如果要动态添加component或者切换component应该采用别的写法

[yuanruixin]

1. for...in...的迭代体必需是一个对象，v-for循环同理。你的maxLength是基本数据类型
2. 你如果要动态添加component或者切换component应该采用别的写法

这里和for...in...关系不大，主要是因为 v-for 的表达式是常量时，意味着结构稳定，vue有一些编译优化， 处理方式会不一样，所以引起了 bug。可以看例子中的其他情况，如果换成const maxLength = [1, 2].length等情况，这里maxLength也是基本数据类型吧，就不会有上面的错误了。官方也提交修改后代码了，可以看一看

[edison1105]

We should keep this opening since it has not been fixed yet.