From 00e5546b3d1ceb4b34f38668bece2d0bcb3af942 Mon Sep 17 00:00:00 2001
From: dcode <dcode@dcode.io>
Date: Sat, 11 Sep 2021 14:57:27 +0200
Subject: [PATCH 1/2] Properly skip duplicate class id exports

---
 src/compiler.ts | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/src/compiler.ts b/src/compiler.ts
index 31f84f065a..cabec5613a 100644
--- a/src/compiler.ts
+++ b/src/compiler.ts
@@ -948,7 +948,11 @@ export class Compiler extends DiagnosticEmitter {
             module.addGlobal(internalName, TypeRef.I32, false, module.i32(classInstance.id));
             this.doneModuleExports.add(element);
           }
-          module.addGlobalExport(internalName, prefix + name);
+
+          let exportName = prefix + name;
+          if (!module.hasExport(exportName)) {
+            module.addGlobalExport(internalName, prefix + name);
+          }
         }
         break;
       }

From f95dd21958db36cd6144c986d0639be10574ad3f Mon Sep 17 00:00:00 2001
From: dcode <dcode@dcode.io>
Date: Sat, 11 Sep 2021 15:00:06 +0200
Subject: [PATCH 2/2] reuse exportName

---
 src/compiler.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/compiler.ts b/src/compiler.ts
index cabec5613a..c3c3778a05 100644
--- a/src/compiler.ts
+++ b/src/compiler.ts
@@ -951,7 +951,7 @@ export class Compiler extends DiagnosticEmitter {
 
           let exportName = prefix + name;
           if (!module.hasExport(exportName)) {
-            module.addGlobalExport(internalName, prefix + name);
+            module.addGlobalExport(internalName, exportName);
           }
         }
         break;