Create a cache clear functionality

I have been trying to figure out the best way to make a cache clear functionality for webgl via javascript. My game has a lot of users that don't know how to properly cache clear so I wanted to make it easier by adding a button.
I have had a couple of users that log in with an earlier version and some assetbundle doesn't get properly updated even though everything is version coded to prevent this.

I have done some testing with using indexedDB.deleteDatabase and it seems to work properly but I have to manually select in code which indexedDB to delete.
Currently deleteing "UnityCache" and "/idbfs".

I have no problem with clearing PlayerPrefs data.

I'm wondering if anyone has build a cache clear option before or had any problems with this. Or if there are any mayor big changes in 2019 or 2020 that I should be aware of when updating.

Currently on 2018.4.3f

 

@GustavNinja, did this end up working smoothly for you? Were in 2020 now.

 

@bigbrainz
We made a JavaScript and made this and it worked. Still works in 2019.4 so we have no problem with this.

 

@GustavNinja, could you post this script?