getInstanceByDom stopped working about vue-echarts HOT 3 CLOSED

In ECharts it ensures you can get the instance from the element with which you initialize the it. But in the Vue component version we actually don't expose where we would initialize the chart instance and that's kind of the point of encapsulating a component: hiding the implementation details.

from vue-echarts.

We do not really guarantee the DOM structure of the chart component. It’s not a part of the public API. You can access the chart instance via the chart property on the component ref.

from vue-echarts.

What do you mean by "It’s not a part of the public API"?

I can see that it's a function from echart API:
https://echarts.apache.org/en/api.html#echarts.getInstanceByDom

from vue-echarts.