update formatsubscriptionResult type (#6369)

* update formatsubscriptionResult * update changelog
web3 · Aug 18, 2023 · 1cdc86c · 1cdc86c
1 parent 86f0cdb
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diff --git a/packages/web3-eth/CHANGELOG.md b/packages/web3-eth/CHANGELOG.md
@@ -180,3 +180,7 @@ Documentation:
 -   A `signTypedData` method to the `Web3Eth` class (#6286)
 
 ## [Unreleased]
+
+### Fixed
+
+-   Added return type for `formatSubscriptionResult` in class `NewHeadsSubscription` (#6368)
diff --git a/packages/web3-eth/src/web3_subscriptions.ts b/packages/web3-eth/src/web3_subscriptions.ts
@@ -118,7 +118,7 @@ export class NewHeadsSubscription extends Web3Subscription<{
 		return ['newHeads'];
 	}
 
-	protected formatSubscriptionResult(data: BlockHeaderOutput) {
+	protected formatSubscriptionResult(data: BlockHeaderOutput): BlockHeaderOutput {
 		return format(blockHeaderSchema, data, super.returnFormat);
 	}
 }