Embed setSphericalProperties in an anonymous js function to omit the invalid return type

#69

Author: SvenTiigi

Sources/API/YouTubePlayer+360DegreePerspectiveAPI.swift

@@ -46,6 +46,7 @@ public extension YouTubePlayer {
                 function: "setSphericalProperties",
                 parameters: jsonString
             )
+            .embedInAnonymousFunction()
         )
     }
 

Sources/WebView/YouTubePlayerWebView+Evaluate.swift

@@ -56,6 +56,17 @@ extension YouTubePlayerWebView.JavaScript {
 
 }
 
+// MARK: - YouTubePlayerWebView+JavaScript+embedInAnonymousFunction
+
+extension YouTubePlayerWebView.JavaScript {
+    
+    /// Embed JavaScript in an anonymous function
+    func embedInAnonymousFunction() -> Self {
+        .init("(function(){\(self.rawValue)})()")
+    }
+    
+}
+
 // MARK: - YouTubePlayerWebView+evaluate
 
 extension YouTubePlayerWebView {