Bug Getting Invalid JS from USER_JSPRE_PLACEHOLDER

Unity version 2021.2.13f1

I'm using the js-sha512 library attached. When I run standalone tests for WebGL, I'm getting the error:

Unable to parse Build/PlayerWithTests.framework.js! The file is corrupt, or compression was misconfigured? (check Content-Encoding HTTP Response Header on web server)
​

Checking the console, I'm getting an error

Uncaught SyntaxError: Invalid left-hand side in assignment
​

When I look at the code in the PlayerWithTests.framework.js source file, I noticed the minified JS script I added has been modified with

Module["USER_JSPRE_PLACEHOLDER"]="USER_JSPRE_PLACEHOLDER";

​

For example, in my sha512.min.jspre script, this snippet

Code (JavaScript):

1. g=$&th^~$&sh

Was turned into:

Code (JavaScript):

1. g=Module["USER_JSPRE_PLACEHOLDER"] = "USER_JSPRE_PLACEHOLDER";th^~Module["USER_JSPRE_PLACEHOLDER"] = "USER_JSPRE_PLACEHOLDER";sh

 

Still getting this issue, seems there is an incorrect replacement.