From 12a13c6d5639dc2e54d04f32cc5336b31e176bfb Mon Sep 17 00:00:00 2001
From: Richard Moore <github@ricmoo.com>
Date: Thu, 15 Sep 2022 22:27:21 -0400
Subject: [PATCH] Refactor Fragment selector and topichash calculation in
 Contract (#3353).

---
 src.ts/contract/contract.ts | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src.ts/contract/contract.ts b/src.ts/contract/contract.ts
index 1fcd2b2b1..58780ef58 100644
--- a/src.ts/contract/contract.ts
+++ b/src.ts/contract/contract.ts
@@ -354,7 +354,7 @@ async function getSubTag(contract: BaseContract, event: ContractEventName): Prom
     } else if (typeof(event) === "string") {
         // Event name (name or signature); `"Transfer"`
         fragment = contract.interface.getEvent(event);
-        topics = [ contract.interface.getEventTopic(fragment) ];
+        topics = [ fragment.topicHash ];
 
     } else if (isDeferred(event)) {
         // Deferred Topic Filter; e.g. `contract.filter.Transfer(from)`
@@ -364,7 +364,7 @@ async function getSubTag(contract: BaseContract, event: ContractEventName): Prom
     } else if ("fragment" in event) {
         // ContractEvent; e.g. `contract.filter.Transfer`
         fragment = event.fragment;
-        topics = [ contract.interface.getEventTopic(fragment) ];
+        topics = [ fragment.topicHash ];
 
     } else {
         console.log(event);