small fix

Author: escamoteur

example/pubspec.lock

@@ -5,18 +5,18 @@ packages:
     dependency: transitive
     description:
       name: async
-      sha256: "947bfcf187f74dbc5e146c9eb9c0f10c9f8b30743e341481c1e2ed3ecc18c20c"
+      sha256: d2872f9c19731c2e5f10444b14686eb7cc85c76274bd6c16e1816bff9a3bab63
       url: "https://pub.dev"
     source: hosted
-    version: "2.11.0"
+    version: "2.12.0"
   boolean_selector:
     dependency: transitive
     description:
       name: boolean_selector
-      sha256: "6cfb5af12253eaf2b368f07bacc5a80d1301a071c73360d746b7f2e32d762c66"
+      sha256: "8aab1771e1243a5063b8b0ff68042d67334e3feab9e95b9490f9a6ebf73b42ea"
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.2"
   characters:
     dependency: transitive
     description:
@@ -44,23 +44,23 @@ packages:
       path: ".."
       relative: true
     source: path
-    version: "5.0.0+20"
+    version: "7.0.0"
   flutter_lints:
     dependency: "direct dev"
     description:
       name: flutter_lints
-      sha256: aeb0b80a8b3709709c9cc496cdc027c5b3216796bc0af0ce1007eaf24464fd4c
+      sha256: a25a15ebbdfc33ab1cd26c63a6ee519df92338a9c10f122adda92938253bef04
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.1"
+    version: "2.0.3"
   functional_listener:
     dependency: "direct main"
     description:
       name: functional_listener
-      sha256: ee8ffc29b2448981d96addf44ac9b4af2ba4ca2627979e77d3e6fe59b967ca4f
+      sha256: c096db771b4ce7ba0f886cc4a761044b11e8276a7bc24cfc812dc4b2bc6f5b16
       url: "https://pub.dev"
     source: hosted
-    version: "3.0.0"
+    version: "4.1.0"
   http:
     dependency: "direct main"
     description:
@@ -81,18 +81,18 @@ packages:
     dependency: transitive
     description:
       name: lints
-      sha256: "5e4a9cd06d447758280a8ac2405101e0e2094d2a1dbdd3756aec3fe7775ba593"
+      sha256: "0a217c6c989d21039f1498c3ed9f3ed71b354e69873f13a8dfc3c9fe76f1b452"
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.1"
+    version: "2.1.1"
   matcher:
     dependency: transitive
     description:
       name: matcher
-      sha256: "1803e76e6653768d64ed8ff2e1e67bea3ad4b923eb5c56a295c3e634bad5960e"
+      sha256: dc58c723c3c24bf8d3e2d3ad3f2f9d7bd9cf43ec6feaa64181775e60190153f2
       url: "https://pub.dev"
     source: hosted
-    version: "0.12.16"
+    version: "0.12.17"
   material_color_utilities:
     dependency: transitive
     description:
@@ -113,18 +113,18 @@ packages:
     dependency: transitive
     description:
       name: path
-      sha256: "8829d8a55c13fc0e37127c29fedf290c102f4e40ae94ada574091fe0ff96c917"
+      sha256: "75cca69d1490965be98c73ceaea117e8a04dd21217b37b292c9ddbec0d955bc5"
       url: "https://pub.dev"
     source: hosted
-    version: "1.8.3"
+    version: "1.9.1"
   quiver:
     dependency: transitive
     description:
       name: quiver
-      sha256: b1c1ac5ce6688d77f65f3375a9abb9319b3cb32486bdc7a1e0fdf004d7ba4e47
+      sha256: ea0b925899e64ecdfbf9c7becb60d5b50e706ade44a85b2363be2a22d88117d2
       url: "https://pub.dev"
     source: hosted
-    version: "3.2.1"
+    version: "3.2.2"
   sky_engine:
     dependency: transitive
     description: flutter
@@ -142,26 +142,26 @@ packages:
     dependency: transitive
     description:
       name: stack_trace
-      sha256: c3c7d8edb15bee7f0f74debd4b9c5f3c2ea86766fe4178eb2a18eb30a0bdaed5
+      sha256: "9f47fd3630d76be3ab26f0ee06d213679aa425996925ff3feffdec504931c377"
       url: "https://pub.dev"
     source: hosted
-    version: "1.11.0"
+    version: "1.12.0"
   stream_channel:
     dependency: transitive
     description:
       name: stream_channel
-      sha256: "83615bee9045c1d322bbbd1ba209b7a749c2cbcdcb3fdd1df8eb488b3279c1c8"
+      sha256: ba2aa5d8cc609d96bbb2899c28934f9e1af5cddbd60a827822ea467161eb54e7
       url: "https://pub.dev"
     source: hosted
-    version: "2.1.1"
+    version: "2.1.2"
   string_scanner:
     dependency: transitive
     description:
       name: string_scanner
-      sha256: "556692adab6cfa87322a115640c11f13cb77b3f076ddcc5d6ae3c20242bedcde"
+      sha256: "0bd04f5bb74fcd6ff0606a888a30e917af9bd52820b178eaa464beb11dca84b6"
       url: "https://pub.dev"
     source: hosted
-    version: "1.2.0"
+    version: "1.4.0"
   term_glyph:
     dependency: transitive
     description:
@@ -174,10 +174,10 @@ packages:
     dependency: transitive
     description:
       name: test_api
-      sha256: "75760ffd7786fffdfb9597c35c5b27eaeec82be8edfb6d71d32651128ed7aab8"
+      sha256: "9955ae474176f7ac8ee4e989dadfb411a58c30415bcfb648fa04b2b8a03afa7f"
       url: "https://pub.dev"
     source: hosted
-    version: "0.6.0"
+    version: "0.7.0"
   typed_data:
     dependency: transitive
     description:
@@ -195,4 +195,4 @@ packages:
     source: hosted
     version: "2.1.4"
 sdks:
-  dart: ">=3.3.0-0 <4.0.0"
+  dart: ">=3.4.0 <4.0.0"

example_command_results/lib/homepage_command_builder.dart

@@ -48,7 +48,7 @@ class _HomePageState extends State<HomePage> {
                 children: [
                   Text('An Error has occurred!'),
                   Text(error.toString()),
-                  if (error != null) Text('For search term: $param')
+                  Text('For search term: $param')
                 ],
               ),
             ),

lib/command_builder.dart

@@ -13,7 +13,7 @@ class CommandBuilder<TParam, TResult> extends StatelessWidget {
   )? whileExecuting;
   final Widget Function(
     BuildContext context,
-    Object?,
+    Object,
     TResult? lastValue,
     TParam?,
   )? onError;
@@ -62,10 +62,10 @@ extension ToWidgeCommandResult<TParam, TResult>
     required Widget Function(TResult result, TParam? param) onData,
     Widget Function(TParam? param)? onNullData,
     Widget Function(TResult? lastResult, TParam? param)? whileExecuting,
-    Widget Function(Object? error, TResult? lastResult, TParam? param)? onError,
+    Widget Function(Object error, TResult? lastResult, TParam? param)? onError,
   }) {
     if (error != null) {
-      return onError?.call(error, data, paramData) ?? const SizedBox();
+      return onError?.call(error!, data, paramData) ?? const SizedBox();
     }
     if (isExecuting) {
       return whileExecuting?.call(data, paramData) ?? const SizedBox();