Problem with ngUniversal

I have a problem with HTMLAnchorElement appeared in file-saver above v2.0.0-rc.4.

When I try to make a prerender using ngUniversal I receive this error:

```
/path/to/project/dist/server.js:225854
__WEBPACK_AMD_DEFINE_RESULT__ !== undefined && (module.exports = __WEBPACK_AMD_DEFINE_RESULT__));
else {}})(this,function(){"use strict";
function b(a,b){return"undefined"==typeof b?b={autoBom:!1}:"object"!=typeof b&&(console.warn("Depricated: Expected third argument to be a object"),b={autoBom:!b}),b.autoBom&&/^\s*(?:text\/\S*|application\/xml|\S*\/\S*\+xml)\s*;
.*charset\s*=\s*utf-8/i.test(a.type)?new Blob(["\uFEFF",a],{type:a.type}):a}function c(b,c,d){var e=new XMLHttpRequest;e.open("GET",b),e.responseType="blob",e.onload=function(){a(e.response,c,d)},e.onerror=function(){console.error("could not download file")},e.send()}function d(a){var b=new XMLHttpRequest;
return b.open("HEAD",a,!1),b.send(),200<=b.status&&299>=b.status}function e(a){try{a.dispatchEvent(new MouseEvent("click"))}catch(c){var b=document.createEvent("MouseEvents");
b.initMouseEvent("click",!0,!0,window,0,0,0,80,20,!1,!1,!1,!1,0,null),a.dispatchEvent(b)}}var f="object"=

ReferenceError: HTMLAnchorElement is not defined
at Object. (/path/to/project/dist/server.js:225854:1182)
```

I found the same problem described here: https://stackoverflow.com/questions/54156508/angular-7-webpack-server-side-rendering-creates-referenceerror-htmlanchorelemen

Can you help me to find out? What could changed related to HTMLAnchorElement in v2.0.0?