From fe78147cb8cc61169d6dd92789584d6e579bedf9 Mon Sep 17 00:00:00 2001
From: Tony Garnock-Jones <tonyg@leastfixedpoint.com>
Date: Tue, 14 Feb 2023 11:43:05 +0100
Subject: [PATCH] Another repair to diagnostic fixup

---
 packages/tsc/src/tsc.ts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/packages/tsc/src/tsc.ts b/packages/tsc/src/tsc.ts
index 22957b8..f177bde 100644
--- a/packages/tsc/src/tsc.ts
+++ b/packages/tsc/src/tsc.ts
@@ -202,6 +202,12 @@ function runBuildOnce(options: CommandLineArguments): boolean {
                 syntheticSourceFiles.set(d.file.fileName, sf);
             }
             d.file = syntheticSourceFiles.get(d.file.fileName);
+
+            if (!('__syndicate_translated__' in d)) {
+                const p = info.targetToSourceMap.get(d.start)!;
+                d.start = p.firstItem.start.pos + p.offset;
+                (d as any).__syndicate_translated__ = true;
+            }
         }
     }