Fix period assumption on signingInfo (#5901)

polkadot-js · Jun 7, 2024 · 0bca92c · 0bca92c
1 parent a437f98
commit 0bca92c
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/packages/api-derive/src/tx/signingInfo.ts b/packages/api-derive/src/tx/signingInfo.ts
@@ -76,7 +76,7 @@ function babeOrAuraPeriod (api: DeriveApi): BN | undefined {
     (api.consts['aura'] as unknown as Aura)?.slotDuration ||
     api.consts.timestamp?.minimumPeriod.muln(2);
 
-  return !period.isZero() ? period : undefined;
+  return period && period.isZero && !period.isZero() ? period : undefined;
 }
 
 export function signingInfo (_instanceId: string, api: DeriveApi): (address: string, nonce?: AnyNumber | Codec, era?: IExtrinsicEra | number) => Observable<Result> {