fix: review issues

Author: originalix

packages/core/src/topLevelInject.ts

@@ -53,7 +53,7 @@ export const topLevelInject = () => {
     updateSettings: settings => lowLevelApi?.updateSettings(settings) ?? Promise.resolve(false),
 
     switchTransport: (env: ConnectSettings['env']) =>
-      lowLevelApi?.switchTransport(env) ?? Promise.resolve(false),
+      lowLevelApi?.switchTransport(env) ?? Promise.resolve({ success: false }),
   };
 
   return api;

packages/hd-web-sdk/src/index.ts

@@ -236,6 +236,7 @@ const switchTransport = async (env: ConnectSettings['env']) => {
     });
     return response;
   }
+  throw ERRORS.TypedError(HardwareErrorCode.IFrameNotInitialized);
 };
 
 const addHardwareGlobalEventListener = (listener: (message: CoreMessage) => void) => {