xhr_1.upload.addEventListener is not a function

[sjr7]

环境： Angular 5 + Primeng + Mockjs 触发场景： 在一个文件上传表单中 , 使用的是 p-fileUpload 组件 ，点击文件上传后，出现

FileUpload.html:8 ERROR TypeError: xhr_1.upload.addEventListener is not a function
    at FileUpload.upload (fileupload.js:186)
    at Object.eval [as handleEvent] (FileUpload.html:8)
    at handleEvent (core.js:13532)
    at callWithDebugContext (core.js:15041)
    at Object.debugHandleEvent [as handleEvent] (core.js:14628)
    at dispatchEvent (core.js:9944)
    at eval (core.js:10569)
    at HTMLButtonElement.eval (platform-browser.js:2628)
    at ZoneDelegate.invokeTask (zone.js:421)
    at Object.onInvokeTask (core.js:4724)

在屏蔽 Mockjs 后文件上传不会报错

---

Debug 界面

在界面中可以看到当前的 XMLHttpRequest已经是Mockjs处理过的，xhr_1.upload.addEventListener的值为undefined，导致后续程序报错

查看 xhr_1.upload中的属性，也是未发现该方法

[git197]

我的问题和你是一样的，你是怎么屏蔽 Mockjs 文件的

[limengning]

const Mock = require('mockjs2');
Mock.setup({
    timeout: 800 // setter delay time
});
var xhr = new window._XMLHttpRequest();
window.XMLHttpRequest.prototype.upload = xhr.upload;

[ipcjs]

三年又三年👀