* Get the metadata for an object, returning undefined if the object does not exist. * This is a wrapper around `getMetadata` that returns undefined i

* Returns whether a Prefix Document in Firestore has all the valid extension fields. * @param snapshot The Firestore snapshot.

* Returns whether a Prefix Document in Firestore has all the valid extension fields. * @param snapshot The Firestore snapshot.

* Returns the current size of this Promise Queue.

* Returns the current size of this Promise Queue.

Output text to the debug log text field, as well as the console.

Fetch the leaderboard document and display.

Render the buttons and other controls.

Render the log output in a scroll view.

Called when a sign-in without fetching profile data completes.

Handle initialization of the necessary firebase modules:

Log the result of the specified task, returning true if the task completed successfully, false otherwise.

Render the GUI:

Attempt to sign in anonymously.

When the app starts, check to make sure that we have the required dependencies to use Firebase, and if not, add them if possible.

Exit if escape (or back, on mobile) is pressed.

Update User Score by Uid.