Ability download extensions based

[moashxer]

Can download everything from https://example.com but if it is possible to download only the files for give extension with a flag like;
-f .js

https://example.com/new/jobs/file.js
https://example.com/staffs/fired.js

downloaded all the js files from example.com

[jsvine]

This is not currently possible with waybackpack. But you can get part of the way by using waybackpack --list https://example.com | grep ".js", and then use curl/wget to download those specific links.