Objects of Ionic cordova plugins not visible from the IDE

Hello to all.
I’m new to the group. I’m developing an app with Ionic 4, Nodejs 10, Angular … on windows 10.

This morning I installed the plugins correctly (it seems) (com-badrit-base64
but also others) but they are not available when I go to import them into the development environment (VIsual Studio Code).


Until yesterday I worked correctly with the same plugins in other projects.

Some idea? Please!