Report original error, too, when reporting double worker error (#235)

Author: andywer

src/worker/index.ts

@@ -100,9 +100,10 @@ function postUncaughtErrorMessage(error: Error) {
   } catch (subError) {
     // tslint:disable-next-line no-console
     console.error(
-      "Not reporting uncaught error back to master thread as it occured while " +
-      "reporting an uncaught error already. Latest error:",
-      subError
+      "Not reporting uncaught error back to master thread as it " +
+      "occured while reporting an uncaught error already." +
+      "\nLatest error:", subError,
+      "\nOriginal error:", error
     )
   }
 }