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

packages/api-derive/src/contracts/fees.ts

@@ -0,0 +1,61 @@
+// Copyright 2017-2025 @pezkuwi/api-derive authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+import type { Observable } from 'rxjs';
+import type { BN } from '@pezkuwi/util';
+import type { DeriveApi, DeriveContractFees } from '../types.js';
+
+import { map, of } from 'rxjs';
+
+import { memo } from '../util/index.js';
+
+type ResultV2 = [BN, BN, BN, BN, BN, BN, BN, BN, BN, BN];
+
+// query via constants (current applicable path)
+function queryConstants (api: DeriveApi): Observable<ResultV2> {
+  return of([
+    // deprecated
+    api.consts.contracts['callBaseFee'] || api.registry.createType('Balance'),
+    api.consts.contracts['contractFee'] || api.registry.createType('Balance'),
+    api.consts.contracts['creationFee'] || api.registry.createType('Balance'),
+    api.consts.contracts['transactionBaseFee'] || api.registry.createType('Balance'),
+    api.consts.contracts['transactionByteFee'] || api.registry.createType('Balance'),
+    api.consts.contracts['transferFee'] || api.registry.createType('Balance'),
+
+    // current
+    api.consts.contracts['rentByteFee'] || api.registry.createType('Balance'),
+    api.consts.contracts['rentDepositOffset'] || api.registry.createType('Balance'),
+    api.consts.contracts['surchargeReward'] || api.registry.createType('Balance'),
+    api.consts.contracts['tombstoneDeposit'] || api.registry.createType('Balance')
+  ]) as unknown as Observable<ResultV2>;
+}
+
+/**
+ * @name fees
+ * @returns An object containing the combined results of the queries for
+ * all relevant contract fees as declared in the bizinikiwi chain spec.
+ * @example
+ * ```javascript
+ * api.derive.contracts.fees(([creationFee, transferFee]) => {
+ *   console.log(`The fee for creating a new contract on this chain is ${creationFee} units. The fee required to call this contract is ${transferFee} units.`);
+ * });
+ * ```
+ */
+export function fees (instanceId: string, api: DeriveApi): () => Observable<DeriveContractFees> {
+  return memo(instanceId, (): Observable<DeriveContractFees> => {
+    return queryConstants(api).pipe(
+      map(([callBaseFee, contractFee, creationFee, transactionBaseFee, transactionByteFee, transferFee, rentByteFee, rentDepositOffset, surchargeReward, tombstoneDeposit]): DeriveContractFees => ({
+        callBaseFee,
+        contractFee,
+        creationFee,
+        rentByteFee,
+        rentDepositOffset,
+        surchargeReward,
+        tombstoneDeposit,
+        transactionBaseFee,
+        transactionByteFee,
+        transferFee
+      }))
+    );
+  });
+}

packages/api-derive/src/contracts/index.ts

@@ -0,0 +1,4 @@
+// Copyright 2017-2025 @pezkuwi/api-derive authors & contributors
+// SPDX-License-Identifier: Apache-2.0
+
+export * from './fees.js';