Why is this js code getting changed?

[ra-dave]

I'm using a wrapper for minify-html named django-minify-html but I am assuming this is a minify-html issue/question.

I just started using this and it's mostly working but its having an issue with some js:

this.isDarkMode = localStorage.getItem("theme") === 'dark'

gets converted to this:

this.isDarkMode=localStorage.getItem(a)===b

which then turns into this error when the page is loaded:

Alpine Expression Error: a is not defined

minify_js option is set to true. Setting it to false makes the error go away, as expected. But why is the js minify breaking the code?