Create a component like KeepAlive.

[hezhongfeng]

Version

3.1.2

Reproduction link

https://github.com/hezhongfeng/vue-page-stack/tree/next

Steps to reproduce

I don't like Vue's KeepAlive cache policy , So I want to create a component like KeepAlive.
But When I use my Component with transition，there is a error Uncaught TypeError: Cannot read property '_' of null.
This error is create by packages/runtime-core/src/componentSlots.ts initSlots.
I don't know how to resolve it.

const KKeepAliveImpl: ComponentOptions = {
  name: `KKeepAlive`,
  __isKeepAlive: true,

  setup(props, { slots }: SetupContext) {
    return () => {};
  },
};

const KKeepAlive = KKeepAliveImpl as any as {
  __isKeepAlive: true;
  new (): {
    $props: VNodeProps;
  };
};

What is expected?

Like KeepAlive work.

What is actually happening?

there is a error Uncaught TypeError: Cannot read property '_' of null.

[posva]

Hi, thanks for your interest but Github issues are for bug reports and feature requests only. You can ask questions on the forum, the Discord server or StackOverflow.

---

You should check this PR and the linked RFC: #3414

[hezhongfeng]

You have good suggestions.