This link will help you to set up capacitor (used to convert the project from typescript to android/ios)
https://capacitor.ionicframework.com/docs/getting-started/with-ionic/
https://capacitor.ionicframework.com/docs/community/plugins/
https://github.com/jepiqueau/jeep/blob/master/capacitor/plugins-library/docs/DataStorage.md
https://github.com/ionic-team/ionic/blob/master/BREAKING.md#version-5x