Zhongxiang Wang

不应该使用 _ 开头的私有属性，可以用 `.childrenRef()` 拿到引用，`.children()` 拿到副本。

带 shape 的应该是 Element 子类型， 遍历时可以在回调参数签名中指定下具体子类型。例如： ```ts this.group.eachChild(function (child: LargeSymbolPath) { // ... }) ```

能否再贴出一些上下文？heartGroup 的类型是？

我这里试了一下，没有报错，你的 ts 版本是多少？

我没发现报错。ECharts 中就是这么使用的，可以参考下。https://github.com/apache/echarts/search?q=eachChild

@ily-salamat Hi, thanks for your report! Please create a new issue and make a reference to this PR. We'll try to confirm and fix it in v5.5.0.

Also, thank you @andrius-kurtinaitis for filing a similar bug. I've marked your issue as high-priority and will fix it first.

@Ovilia I agree with @ElayGelbart. It's a bit hard to see but they do connect with a very thin line.

@lhd163 Thanks for your feedback. Please file a bug report with a reproduction example.

@anymos Hi Raphael, I'm not sure if the following way can help you but just take it a try. Please find `isArray` in https://github.com/apache/echarts/blob/master/src/data/Source.ts#L274 in your local dist file and...