Enable night style when inside tunnel

MapboxCoreNavigation/RouteProgress.swift

@@ -388,10 +388,10 @@ open class RouteStepProgress: NSObject {
     /**
      The next intersection the user will travel through.
 
-     The step must contain `intersectionsIncludingUpcomingManeuverIntersection` for this value not be `nil`.
+     The step must contain `intersectionsIncludingUpcomingManeuverIntersection` otherwise this property will be `nil`.
      */
     @objc public var upcomingIntersection: Intersection? {
-        guard let intersections = intersectionsIncludingUpcomingManeuverIntersection, intersections.startIndex..<intersections.endIndex-1 ~= intersectionIndex else {
+        guard let intersections = intersectionsIncludingUpcomingManeuverIntersection, intersections.startIndex...intersections.endIndex ~= intersectionIndex else {
             return nil
         }
 
@@ -406,7 +406,7 @@ open class RouteStepProgress: NSObject {
     /**
      The current intersection the user will travel through.
 
-     The step must contain `intersectionsIncludingUpcomingManeuverIntersection` for this value not be `nil`.
+     The step must contain `intersectionsIncludingUpcomingManeuverIntersection` otherwise this property will be `nil`.
      */
     @objc public var currentIntersection: Intersection? {
         guard let intersections = intersectionsIncludingUpcomingManeuverIntersection, intersections.startIndex..<intersections.endIndex ~= intersectionIndex else {

MapboxNavigation/NavigationViewController.swift

@@ -305,9 +305,9 @@ public class NavigationViewController: UIViewController {
     @objc public var annotatesSpokenInstructions = false
 
     /**
-     A Boolean value that determines whether the dark style should be automatically activated when a route controller enters a tunnel.
+     A Boolean value that indicates whether the dark style should apply when a route controller enters a tunnel.
      */
-    @objc public var automaticallySwitchStyleForTunnels: Bool = false
+    @objc public var enableNightStyleInsideTunnelFeatureEnabled: Bool = false
 
     let progressBar = ProgressBar()
     var styleManager: StyleManager!
@@ -409,7 +409,7 @@ public class NavigationViewController: UIViewController {
 
         mapViewController?.notifyDidChange(routeProgress: routeProgress, location: location, secondsRemaining: secondsRemaining)
 
-        if automaticallySwitchStyleForTunnels,
+        if enableNightStyleInsideTunnelFeatureEnabled,
             let currentIntersection = routeProgress.currentLegProgress.currentStepProgress.currentIntersection,
             let classes = currentIntersection.outletRoadClasses {
                 if classes.contains(.tunnel) {