Best way to determine if a Steam user owns a free game's package/app ID

[SwenH]

I would like to always launch a specific free game on all of my accounts via `steam-user`, but unfortunately, I can't find a way to determine which account already owns the game and which doesn't.

The issue lies with the package IDs — since each game can have multiple package IDs, the only option I’ve found so far is to request a new license for the free game every time via the `steam-user`, just to make sure that the app ID is really in the library.

However, this results in the same package ID being added multiple times to my licenses because I request it again each time.

Is there any other way to reliably check whether a package ID for a specific app ID is already owned, so I can launch the game without requesting the license again?

[Dr. McKay]

Set the enablePicsCache option to true in the constructor, then listen for the ownershipCached event and once it's emitted, you can call ownsApp to check if you own a license for an app.