How to configure animations in VChart portfolio diagrams?

Question title

How to configure animations for VChart's combo chart?

Problem description

In a biaxial diagram, how to make the left and right axes execute the animation in order, and after the left axis column is executed, the right axis line will play the animation again?

Firstly, in VChart, its animation can be configured within each series. We can configure animations separately in columns and lines.

Then there is a dedicated configuration for outro animation in the series: animationAppear.

animationAppear?: {
  preset?: Preset | false;
  duration?: number;
  delay?: number;
  easing?: EasingType;
  oneByOne?: boolean;
};

We can configure delay on the online animation to start playing outro animation after the column completes the animation.

series: [{
      type: 'bar',
      id: 'bar',
      animationAppear: {
        duration: 500
      }
    },
    {
      type: 'line',
      id: 'line',
      animationAppear: {
        delay: 500,
      }
    }
]

In addition, if oneByOneis configured on the bar chart animation, it should be noted that the total animation duration of the bar chart = x-axis number* duration

Code example

const spec = {
  type: 'common',
  seriesField: 'color',
  data: [
    {
      id: 'id0',
      values: [
        { x: '周一', type: '早餐', y: 15 },
        { x: '周一', type: '午餐', y: 25 },
        { x: '周二', type: '早餐', y: 12 },
        { x: '周二', type: '午餐', y: 30 },
        { x: '周三', type: '早餐', y: 15 },
        { x: '周三', type: '午餐', y: 24 },
        { x: '周四', type: '早餐', y: 10 },
        { x: '周四', type: '午餐', y: 25 },
        { x: '周五', type: '早餐', y: 13 },
        { x: '周五', type: '午餐', y: 20 },
        { x: '周六', type: '早餐', y: 10 },
        { x: '周六', type: '午餐', y: 22 },
        { x: '周日', type: '早餐', y: 12 },
        { x: '周日', type: '午餐', y: 19 }
      ]
    },
    {
      id: 'id1',
      values: [
        { x: '周一', type: '饮料', y: 22 },
        { x: '周二', type: '饮料', y: 43 },
        { x: '周三', type: '饮料', y: 33 },
        { x: '周四', type: '饮料', y: 22 },
        { x: '周五', type: '饮料', y: 10 },
        { x: '周六', type: '饮料', y: 30 },
        { x: '周日', type: '饮料', y: 50 }
      ]
    }
  ],
  series: [
    {
      type: 'bar',
      id: 'bar',
      dataIndex: 0,
      label: { visible: true },
      seriesField: 'type',
      dataIndex: 0,
      xField: ['x', 'type'],
      yField: 'y',
      animationAppear: {
        duration: 500, 
        oneByOne: true
      }
    },
    {
      type: 'line',
      id: 'line',
      dataIndex: 1,
      label: { visible: true },
      seriesField: 'type',
      xField: 'x',
      yField: 'y',
      stack: false,
      animationAppear: {
        delay: 500 * 7,
        duration: 500,
        oneByOne: true
      }
    }
  ],
  axes: [
    { orient: 'left', seriesIndex: [0] },
    { orient: 'right', seriesId: ['line'], grid: { visible: false } },
    { orient: 'bottom', label: { visible: true }, type: 'band' }
  ],
  legends: {
    visible: true,
    orient: 'bottom'
  }
};

const vchart = new VChart(spec, { dom: CONTAINER_ID });
vchart.renderSync();

// Just for the convenience of console debugging, DO NOT COPY!
window['vchart'] = vchart;