WorkspaceFolders and WorkspaceFile as provided by the VSCode API are defined in documentation as (as of 2023-09-19):
These objects both define themselves only as undefined when a workspace isn't present. Despite the behavior described in docs, they can be undefined at different times. This presents an issue with detecting whether a workspace is open or not - which is the source of truth if they aren't defined in the case specified?
Run yarn install, yarn compile, run the extension host, and open a folder to reproduce the issue where no workspacefile is present despite the workspaceFolders being populated by the open folder
OR create a new extension from scratch and add this to the activate function
// open a folder
if (vscode.workspace.workspaceFile !== undefined && vscode.workspace.workspaceFolders === undefined
|| vscode.workspace.workspaceFile === undefined && vscode.workspace.workspaceFolders !== undefined) {
vscode.window.showErrorMessage(
`workspaceFile and workspaceFolders are not both 'undefined when no workspace has been opened`
+ `\nworkspaceFile: ${JSON.stringify(vscode.workspace.workspaceFile)}`
+ `\nworkspaceFolders: ${JSON.stringify(vscode.workspace.workspaceFolders)}`)
} else {
vscode.window.showInformationMessage("Both workspaceFile and workspaceFolders are 'undefined when no workspace has been opened'")
}
activation event for this extension "onStartupFinished"