vscode-extension-samples/fsprovider-sample/README.md

MemFS

This extension implements an in-memory file system to show-case the filesytem provider api. It serves two purposes:

• Be a sample/reference for extension authors that want to implement a filesystem provider
• Be a test for other extensions that falsely assume text document always live on disk.

To get started you need this:

• install this extension
• when not having a workspace opened, select 'F1 > [MemFS] Setup Workspace' (optionally save the workspace now)
• select 'F1 > [MemFs] Create Files' and notice how the explorer is now populated
• ... try things out, e.g. IntelliSense in memfs-files, create new files, save them, etc
• select 'F1 > [MemFs] Delete Files' or reload to restart