We officially provide a case repository for module expansion opensumi-module-samples. You can learn the following contents in the template repository:

Sample	API & Documentation
Connection Sample	connection-between-browser-and-node
Custom Terminal Env Sample	Add custom Terminal enviroment variables
Use Buitin Components	-
Use Antd Components	Use OpenSumi antd theme
Welcome page	Create your welcome page
Editor Title Actions	Create Editor Title Actions
Use OutputChannel	Logging message on Output panel
Add Welcome Content	How to add new welcome content
i18n in modules	How to custom i18n text
Toggle Panel or Sidebar	Toggle Panel or Sidebar
Custom Extension Marketplace entrypoint	Custom Extension Marketplace entrypoint
Custom Layout	Custom Layout View
File Opened With Custom Component	-
Basic TreeView	-
Modal API	How to use IMessageService/IDialogService/IProcessService
Use Custom Menu ID	-
Add Toolbar Menu	-
Custom Editor Empty Component	Custom Editor Empty Component
Add Custom View	-
Custom ContextMenu Or Menubar Menu	Custom Menu
Use Buitin Components	-
Use Buitin Services	-
Use Buitin Events	-
Use Monaco in Custom Editor Components	-

The content of the module repository is also being iteratively updated, and developers are welcome to contribute your own use cases.