Refine MediaKeys polyfill error type

Inspired by code in pull #176 Change-Id: I2e29310c8a3583ed208d7bd1ae2e747a92ddf480
shaka-project · Oct 20, 2015 · ff1dcc2 · ff1dcc2
1 parent 5637962
commit ff1dcc2
Showing 1 changed file with 8 additions and 1 deletion.
diff --git a/lib/polyfill/patchedmediakeys_v01b.js b/lib/polyfill/patchedmediakeys_v01b.js
@@ -247,7 +247,14 @@ shaka.polyfill.PatchedMediaKeys.v01b.MediaKeySystemAccess =
     }
   }  // for each cfg in supportedConfigurations
 
-  throw Error('None of the requested configurations were supported.');
+  var message = 'Unsupported keySystem';
+  if (keySystem == 'org.w3.clearkey' || keySystem == 'com.widevine.alpha') {
+    message = 'None of the requested configurations were supported.';
+  }
+  var unsupportedError = new Error(message);
+  unsupportedError.name = 'NotSupportedError';
+  unsupportedError.code = DOMException.NOT_SUPPORTED_ERR;
+  throw unsupportedError;
 };