ConstReadonlyUiPreferred: "ui-preferred"Works anywhere but is better placed on the UI side of a remote.
ReadonlyUnspecified: "unspecified"Not declared. Treated cautiously rather than assumed safe.
ReadonlyWebSafe: "web-safe"No Node built-ins; loads in the browser/worker host.
ReadonlyWorkspaceNode: "workspace-node"Needs the Node runtime, so it cannot run in the web host.
What kind of host a module can run in.
This is self-declared metadata, not static bundle analysis. A declaration of a hard incompatibility (for example Node-only code in a web host) blocks activation; positive or missing compatibility claims can only guide warnings and still require tests in the intended Extension Host.