fix: Updated the AccountDeleteTransaction

Author: gaurangtorvekar

src/hcs-16/tx.ts

@@ -12,6 +12,7 @@ import {
   CustomFixedFee,
   TokenId,
 } from '@hashgraph/sdk';
+import * as Hashgraph from '@hashgraph/sdk';
 import {
   buildTopicCreateTx,
   buildMessageTx,
@@ -385,15 +386,18 @@ export function buildHcs16ScheduleAccountDeleteTx(params: {
   transferAccountId: string;
   memo?: string;
 }): ScheduleCreateTransaction {
-  const inner = new AccountUpdateTransaction() as any; // AccountDeleteTransaction not imported in current SDK typings set
-  // Fallback: construct via new proto if needed in future; here we use typed import when available
-  // Replace when AccountDeleteTransaction is exported in the used SDK version
-  (inner as any).setAccountId?.(AccountId.fromString(params.floraAccountId));
+  // Use real AccountDeleteTransaction; access via namespace import to avoid typing gaps in some SDK versions
+  const DeleteCtor = (Hashgraph as any).AccountDeleteTransaction;
+  if (!DeleteCtor) {
+    throw new Error(
+      'AccountDeleteTransaction is not available in @hashgraph/sdk',
+    );
+  }
+  const inner = new DeleteCtor();
+  inner.setAccountId(AccountId.fromString(params.floraAccountId));
+  inner.setTransferAccountId(AccountId.fromString(params.transferAccountId));
   if (params.memo) {
-    (inner as any).setTransactionMemo?.(params.memo);
+    inner.setTransactionMemo(params.memo);
   }
-  (inner as any).setTransferAccountId?.(
-    AccountId.fromString(params.transferAccountId),
-  );
   return new ScheduleCreateTransaction().setScheduledTransaction(inner);
 }