Don't ignore ref count, but zero & restore it

src/internal/objectWrapperHelpers.ts

@@ -12,6 +12,8 @@ import {
   handleArcForDeletedValuePointer,
   decrementRefCount,
   writeEntry,
+  incrementRefCount,
+  setRefCount,
 } from "./store";
 import { entryToFinalJavaScriptValue } from "./entryToFinalJavaScriptValue";
 import {
@@ -148,9 +150,12 @@ export function mapOrSetClear(
 ) {
   const entry = readEntry(carrier, mapOrSetPtr) as MapEntry | SetEntry;
 
+  // we fake the entry refCount as zero so getAllLinkedAddresses will visit what's needed
+  const prevCount = setRefCount(carrier, mapOrSetPtr, 0);
+
   const { leafAddresses, arcAddresses } = getAllLinkedAddresses(
     carrier,
-    true,
+    false,
     mapOrSetPtr
   );
 
@@ -174,6 +179,9 @@ export function mapOrSetClear(
 
   // hashmapClearFree(externalArgs, carrier, entry.value);
 
+  // Restore real ref count
+  setRefCount(carrier, mapOrSetPtr, prevCount);
+
   entry.value = createHashMap(carrier, externalArgs.hashMapMinInitialCapacity);
 
   writeEntry(carrier, mapOrSetPtr, entry);

src/internal/store.ts

@@ -492,6 +492,33 @@ export function decrementRefCount(
   throw new Error("unexpected");
 }
 
+export function getRefCount(carrier: GlobalCarrier, entryPointer: number) {
+  const entry = readEntry(carrier, entryPointer);
+
+  if ("refsCount" in entry) {
+    return entry.refsCount;
+  }
+
+  throw new Error("unexpected");
+}
+
+export function setRefCount(
+  carrier: GlobalCarrier,
+  entryPointer: number,
+  newRefCount: number
+) {
+  const entry = readEntry(carrier, entryPointer);
+
+  if ("refsCount" in entry) {
+    const prevCount = entry.refsCount;
+    entry.refsCount = newRefCount;
+    writeEntry(carrier, entryPointer, entry);
+    return prevCount;
+  }
+
+  throw new Error("unexpected");
+}
+
 // export function getObjectPropPtrToPtr(
 //   { dataView }: GlobalCarrier,
 //   pointerToEntry: number