fix(funnel): 修复漏斗图数据为0时，出现conversionTag 样式问题 (#2893)

__tests__/bugs/issue-2881-spec.ts

@@ -0,0 +1,42 @@
+import { Funnel } from '../../src';
+import { createDiv } from '../utils/dom';
+
+describe('#2651', () => {
+  it('funnel render normal when data is null or zero', () => {
+    const data = [
+      { stage: '简历筛选', number: 10 },
+      { stage: '初试人数', number: 8 },
+      { stage: '复试人数', number: 7 },
+      { stage: '录取人数', number: 6 },
+      { stage: '入职人数', number: 5 },
+    ];
+
+    const plot = new Funnel(createDiv(), {
+      data: data,
+      xField: 'stage',
+      yField: 'number',
+      legend: false,
+    });
+
+    plot.render();
+    expect(plot.chart.getController('annotation').getComponents().length).toBe(4);
+
+    plot.changeData([
+      { stage: '简历筛选', number: 0 },
+      { stage: '初试人数', number: 0 },
+      { stage: '复试人数', number: 4 },
+      { stage: '录取人数', number: 0 },
+      { stage: '入职人数', number: 0 },
+    ]);
+    expect(plot.chart.getController('annotation').getComponents().length).toBe(4);
+
+    plot.changeData([
+      { stage: '简历筛选', number: 0 },
+      { stage: '初试人数', number: 0 },
+      { stage: '复试人数', number: 0 },
+      { stage: '录取人数', number: 0 },
+      { stage: '入职人数', number: 0 },
+    ]);
+    expect(plot.chart.getController('annotation').getComponents().length).toBe(0);
+  });
+});

src/plots/funnel/geometries/common.ts

@@ -54,7 +54,7 @@ export function conversionTagComponent(
     if (conversionTag) {
       const { formatter } = conversionTag;
       data.forEach((obj, index) => {
-        if (index <= 0) return;
+        if (index <= 0 || Number.isNaN(obj[FUNNEL_MAPPING_VALUE])) return;
         const lineOption = getLineCoordinate(obj, index, data, {
           top: true,
           text: {