Source map files are not created when the JavaScript file was generated from TypeScript

[cas4]

Installed product versions

• Visual Studio: [2019 Professional]
• This extension: [3.2.449]

Description

Source map files are not created for JavaScript files that are generated from Typescript.

Steps to recreate

1. Create a new MVC Core 3.1 web application
2. Create a test.ts Typescript file and save it. The JavaScript file is auto-generated by VS
3. Edit the bundleconfig.json file to minify the JS file:

{
    "outputFileName": "wwwroot/js/test.min.js",
    "inputFiles": [ "wwwroot/js/test.js" ],
    "minify": { "enabled": true }
    "sourceMap": true
}

4. Compile the project
5. The test.min.js file is created, but the test.min.js.map file is not

Current behavior

The minified source map file is not being generated

Expected behavior

A map file for the minified JavaScript should be generated to allow for browser debugging.

[ericop]

I've been having a similar issue, and this wasn't always the case