From 7d061b786f72cbfc461bf80d139d10aeff533a6e Mon Sep 17 00:00:00 2001
From: Richard Moore <github@ricmoo.com>
Date: Tue, 11 Jul 2023 20:42:43 -0300
Subject: [PATCH] Fixed contract once not running stop callback.

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

diff --git a/src.ts/contract/contract.ts b/src.ts/contract/contract.ts
index 4157121631..4c972667a9 100644
--- a/src.ts/contract/contract.ts
+++ b/src.ts/contract/contract.ts
@@ -593,6 +593,12 @@ async function _emit(contract: BaseContract, event: ContractEventName, args: Arr
         } catch (error) { }
         return !once;
     });
+
+    if (sub.listeners.length === 0) {
+        sub.stop();
+        getInternal(contract).subs.delete(sub.tag);
+    }
+
     return (count > 0);
 }