修改

src/components/bpmnProcessDesigner/package/designer/index2.js

@@ -0,0 +1,8 @@
+import MyProcessViewer from "./ProcessViewer.vue";
+
+MyProcessViewer.install = function(Vue) {
+  Vue.component(MyProcessViewer.name, MyProcessViewer);
+};
+
+// 流程图的查看器，不可编辑
+export default MyProcessViewer;