Widget
File locate: ./lib/widgets/..
Contains all UI widget of application like: Button, Loading, Star Rating, Item, Card, Message …
Blocs
Contains all Blocs pattern of the application
Screens
File locate: ./lib/screens/..
Contains all screens of the application
All template design of the app are locate in here (./lib/screens/..). You could change or re-structure by matching with your own project structure design.
Assets
File locate: ./assets/..
You can store images, fonts or other file resource in this folder
Utils
File locate: ./lib/utils/..
Contains all utils function like validate form, logger, switch mode theme, color … It looks like helper functions