Store settings internally instead of relying to local storage

[magkopian]

First of all thank you for your work. I rely on this extension heavily, and it has greatly enhanced my experience of using Skroutz for my day to day purchases.

I just wanted to ask if it would be possible to store the settings of the extension somewhere else internally, instead of relying to the local storage for the www.skroutz.gr domain. I have Firefox set to wipe the data of all websites when I close it, so no cookies and other site related data are retained.

I am not an extension developer, but if I understand this correctly I think the issue is the use of the Window.localStorage API instead of storage.local.

Although this API is similar to Window.localStorage it is recommended that you don't use Window.localStorage in the extension code to store extension-related data. Firefox will clear data stored by extensions using the localStorage API in various scenarios where users clear their browsing history and data for privacy reasons, while data saved using the storage.local API will be correctly persisted in these scenarios.

https://developer.mozilla.org/en-US/docs/Mozilla/Add-ons/WebExtensions/API/storage