From 2802de3fb3469310b9b85dcfeecbfbf5272dbc77 Mon Sep 17 00:00:00 2001
From: fromkeith <fromkeith@users.noreply.github.com>
Date: Fri, 11 Oct 2024 11:24:52 -0400
Subject: [PATCH] Improve error messages when typeToCode throws an exception
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`typeToCode` can throw an expection, which reduces the error message to:

```
UnimplementedError: (InvalidTypeImpl) InvalidType
package:json_serializable/src/utils.dart 221:3              typeToCode
package:json_serializable/src/helper_core.dart 79:46        createInvalidGenerationError
...
```

This change improves the error message to something like this:

```
Could not generate `fromJson` code for `photos` because of type is unimplemented/unsupported/undefined.
package:picthrive_kiosk/ptclient/generated/consolidated_public.swagger.dart:2633:21
     ╷
2633 │   final List<Items> photos;
     │                     ^^^^^^
     ╵

```
---
 json_serializable/lib/src/helper_core.dart | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/json_serializable/lib/src/helper_core.dart b/json_serializable/lib/src/helper_core.dart
index 0a054f828..5f3433a48 100644
--- a/json_serializable/lib/src/helper_core.dart
+++ b/json_serializable/lib/src/helper_core.dart
@@ -75,7 +75,11 @@ $converterOrKeyInstructions
 * Set `JsonSerializable.genericArgumentFactories` to `true`
   https://pub.dev/documentation/json_annotation/latest/json_annotation/JsonSerializable/genericArgumentFactories.html''';
   } else if (field.type != error.type) {
-    message = '$message because of type `${typeToCode(error.type)}`';
+    try {
+      message = '$message because of type `${typeToCode(error.type)}`';
+    } catch (ex) {
+      message = '$message because of type is unimplemented/unsupported/undefined';
+    }
   } else {
     final element = error.type.element?.name;
     todo = '''