You might consider including the BSD licenses those projects were published under in your minified JavaScript file. Is this project's source code published anywhere?
Do I have to tell everyone what technologies I've used to built my software, or...? That seems weird to me, but again I'm not a developer so I've never dealt with that. I've never released a license with my Bash scripts.
> I've never released a license with my Bash scripts.
You reserve all rights to your published works without stating otherwise. Developers would be wise to avoid redistributing unlicensed works without the written consent of the copyright holder(s).
[0] https://code.tutsplus.com/tutorials/open-source-101-licensin...