wingetautoupdate/Winget-AutoUpdate/mods/README.md

Winget-Install

Mods

The Mod feature allows you to run an additional script when installing or uninstalling an app. Just put the script with the App ID followed by the "-install" or "-uninstall" suffix to be considered.
AppID-install.ps1 or AppID-uninstall.ps1
and put this in the Mods directory

Example:
If you want to run a script just after uninstalling FileZilla, call your script like this: TimKosse.FileZilla.Client-uninstall.ps1

In the case of FileZilla it spawns a process "Un_A.exe" (NullSoft) as a graphical uninstallation and this we will have to wait for completion of before moving on to checking if the uninstallation suceeded or not.