Add additional javascript on Story details popup on Publish click

Hi Team,

After creating web story, when I click on “Publish” button and then Story details popup appears. I would like to change the permalink on the popup so want to add some javascript on popup. But I am unable to find the javascript file for that.

I can see one file named /assets/js/wp-story-editor.js but it’s in minified format. Could you help me to find the correct place so I can add some javascript code to update permalink in “Story details” popup.

Thanks a lot.