Function once

once(event: "added" | "removed", listener: (device: object) => void): void
Register a listener that fires at most once for a USB device event.
Parameters
- event: "added" | "removed"
  The event to listen for
- listener: (device: object) => void
  Called the next time a matching device event occurs, then automatically removed
Returns void
Throws
Throws an Error on failure; wrap calls in try/catch to handle it.