The project folder includes a 'Packages' subfolder now to see the contents of installed packages.
The path it reports with AssetDatabase.GetAssetPath isn't where the actual package items are stored, so when doubleclicking a script in a package VSCode opens a new blank file with unsaved changes instead of viewing the actual contents of the script.
To get it working for me, I've replaced
string completeFilepath = appPath + Path.DirectorySeparatorChar + AssetDatabase.GetAssetPath(selected);
with
string completeFilepath = Path.GetFullPath(selectedFilePath);
in the OnOpenedAsset callback.
The project folder includes a 'Packages' subfolder now to see the contents of installed packages.
The path it reports with AssetDatabase.GetAssetPath isn't where the actual package items are stored, so when doubleclicking a script in a package VSCode opens a new blank file with unsaved changes instead of viewing the actual contents of the script.
To get the path where the item exists (the one that opens when you right click and choose 'Show in Explorer'), the Path.GetFullPath() method can be used as per https://docs.unity3d.com/Manual/upm-assets.html#GetFullPath
To get it working for me, I've replaced
string completeFilepath = appPath + Path.DirectorySeparatorChar + AssetDatabase.GetAssetPath(selected);withstring completeFilepath = Path.GetFullPath(selectedFilePath);in the OnOpenedAsset callback.