Package-level declarations

data class BatteryInfo(val level: Int = -1, val isCharging: Boolean = false)

data class BuildInfo(val brand: String, val model: String, val release: String)

data class ScreenInfo(val screenDp: IntSize, val screenPx: IntSize, val density: Float, val isLandscape: Boolean)

fun useBatteryInfo(): State<BatteryInfo>