Rebrand: polkadot → pezkuwi, substrate → bizinikiwi, kusama → dicle

packages/api-derive/src/tx/events.ts

@@ -0,0 +1,43 @@
+// Copyright 2017-2025 @pezkuwi/api-derive authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { Observable } from 'rxjs';
+import type { EventRecord, Hash, SignedBlock } from '@pezkuwi/types/interfaces';
+import type { DeriveApi } from '../types.js';
+
+import { combineLatest, map, switchMap } from 'rxjs';
+
+import { memo } from '../util/index.js';
+
+interface Result {
+  block: SignedBlock;
+  events: EventRecord[];
+}
+
+/**
+ * @name events
+ * @param {Hash} at Block hash to query at.
+ * @description Retrieves the block information alongside its events at a given block hash
+ * @example
+ * ```javascript
+ * const blockHash = api.registry.createType(
+ *   "Hash",
+ *   "0xf1dc2efe8265be67deea5e91b05a98a7f9f81f66854e92825cf36f541beb7af6"
+ * );
+ * const { events, block } = await api.derive.tx.events(blockHash);
+ * ```
+ */
+export function events (instanceId: string, api: DeriveApi): (at: Hash) => Observable<Result> {
+  return memo(instanceId, (blockHash: Hash) =>
+    combineLatest([
+      api.rpc.chain.getBlock(blockHash),
+      api.queryAt(blockHash).pipe(
+        switchMap((queryAt) =>
+          queryAt.system.events()
+        )
+      )
+    ]).pipe(
+      map(([block, events]) => ({ block, events }))
+    )
+  );
+}