From 84de4c9477e92721c828027204373e8db9682a2a Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 10 Jun 2025 00:26:39 +0000
Subject: [PATCH 1/2] Initial plan for issue


From fba53fed47ad75c455be05b7db5fb475683ec824 Mon Sep 17 00:00:00 2001
From: "copilot-swe-agent[bot]" <198982749+Copilot@users.noreply.github.com>
Date: Tue, 10 Jun 2025 00:44:28 +0000
Subject: [PATCH 2/2] Changes before error encountered

Co-authored-by: andrewbranch <3277153+andrewbranch@users.noreply.github.com>
---
 internal/checker/nodebuilderimpl.go | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/internal/checker/nodebuilderimpl.go b/internal/checker/nodebuilderimpl.go
index 591489e55d..e3cba7bd7d 100644
--- a/internal/checker/nodebuilderimpl.go
+++ b/internal/checker/nodebuilderimpl.go
@@ -304,6 +304,12 @@ func (b *nodeBuilderImpl) tryReuseExistingNonParameterTypeNode(existing *ast.Typ
 	if annotationType == nil {
 		annotationType = b.getTypeFromTypeNode(existing, true)
 	}
+	if b.ch.isErrorType(annotationType) {
+		// allow "reusing" type nodes that resolve to error types
+		// those can't truly be reused but it prevents cascading errors in isolatedDeclarations
+		// for source with errors there is no guarantee to emit correct code anyway
+		return existing
+	}
 	if annotationType != nil && b.typeNodeIsEquivalentToType(host, t, annotationType) && b.existingTypeNodeIsNotReferenceOrIsReferenceWithCompatibleTypeArgumentCount(existing, t) {
 		result := b.tryReuseExistingTypeNodeHelper(existing)
 		if result != nil {