From 1b5fc7fb80e4e6f4b6ebbeb2d3b72dcd943a7eb7 Mon Sep 17 00:00:00 2001
From: Konstantin Shcheglov <scheglov@google.com>
Date: Fri, 5 Dec 2025 17:29:02 -0800
Subject: [PATCH] DeCo. Comment out assert(nameOffset != null ...)

---
 lib/src/model/model_element.dart | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/src/model/model_element.dart b/lib/src/model/model_element.dart
index 571ab587df..a9a05622fa 100644
--- a/lib/src/model/model_element.dart
+++ b/lib/src/model/model_element.dart
@@ -588,8 +588,11 @@ abstract class ModelElement
     final lineInfo = unitElement.lineInfo;
 
     final nameOffset = element.firstFragment.nameOffset;
-    assert(nameOffset != null && nameOffset >= 0,
-        'Invalid location data, $nameOffset, for element: $fullyQualifiedName');
+    // TODO(scheglov): For extension types, or with primary constructors
+    // and declaring formal parameters, the field has no declaration, so
+    // no name offset.
+    // assert(nameOffset != null && nameOffset >= 0,
+    //     'Invalid location data, $nameOffset, for element: $fullyQualifiedName');
     if (nameOffset != null && nameOffset >= 0) {
       return lineInfo.getLocation(nameOffset);
     }