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fix: prettier
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‎.snippets/code/tutorials/interoperability/xcm-fee-estimation/teleport-ah-to-bridge-hub.ts‎

Lines changed: 134 additions & 84 deletions
Original file line numberDiff line numberDiff line change
@@ -1,11 +1,7 @@
1-
import { paseoAssetHub, paseoBridgeHub } from "@polkadot-api/descriptors";
2-
import {
3-
createClient,
4-
FixedSizeBinary,
5-
Enum,
6-
} from "polkadot-api";
7-
import { getWsProvider } from "polkadot-api/ws-provider/node";
8-
import { withPolkadotSdkCompat } from "polkadot-api/polkadot-sdk-compat";
1+
import { paseoAssetHub, paseoBridgeHub } from '@polkadot-api/descriptors';
2+
import { createClient, FixedSizeBinary, Enum } from 'polkadot-api';
3+
import { getWsProvider } from 'polkadot-api/ws-provider/node';
4+
import { withPolkadotSdkCompat } from 'polkadot-api/polkadot-sdk-compat';
95
import {
106
XcmVersionedLocation,
117
XcmVersionedAssetId,
@@ -17,20 +13,21 @@ import {
1713
XcmV5Junction,
1814
XcmV5AssetFilter,
1915
XcmV5WildAsset,
20-
} from "@polkadot-api/descriptors";
16+
} from '@polkadot-api/descriptors';
2117

2218
// 1 PAS = 10^10 units
2319
const PAS_UNITS = 10_000_000_000n; // 1 PAS
2420
const PAS_CENTS = 100_000_000n; // 0.01 PAS
2521

2622
// Paseo Asset Hub constants
27-
const PASEO_ASSET_HUB_RPC_ENDPOINT = "ws://localhost:8001";
28-
const ASSET_HUB_ACCOUNT = "15oF4uVJwmo4TdGW7VfQxNLavjCXviqxT9S1MgbjMNHr6Sp5"; // Alice (Paseo Asset Hub)
23+
const PASEO_ASSET_HUB_RPC_ENDPOINT = 'ws://localhost:8001';
24+
const ASSET_HUB_ACCOUNT = '15oF4uVJwmo4TdGW7VfQxNLavjCXviqxT9S1MgbjMNHr6Sp5'; // Alice (Paseo Asset Hub)
2925

3026
// Bridge Hub destination
31-
const BRIDGE_HUB_RPC_ENDPOINT = "ws://localhost:8000";
27+
const BRIDGE_HUB_RPC_ENDPOINT = 'ws://localhost:8000';
3228
const BRIDGE_HUB_PARA_ID = 1002;
33-
const BRIDGE_HUB_BENEFICIARY = "14E5nqKAp3oAJcmzgZhUD2RcptBeUBScxKHgJKU4HPNcKVf3"; // Bob (Bridge Hub)
29+
const BRIDGE_HUB_BENEFICIARY =
30+
'14E5nqKAp3oAJcmzgZhUD2RcptBeUBScxKHgJKU4HPNcKVf3'; // Bob (Bridge Hub)
3431

3532
// Create the XCM message for teleport (Asset Hub → Bridge Hub)
3633
function createTeleportXcmToBridgeHub(paraId: number) {
@@ -56,7 +53,7 @@ function createTeleportXcmToBridgeHub(paraId: number) {
5653
interior: XcmV5Junctions.X1(XcmV5Junction.Parachain(paraId)),
5754
},
5855
remote_fees: Enum(
59-
"Teleport",
56+
'Teleport',
6057
XcmV5AssetFilter.Definite([
6158
{
6259
id: { parents: 1, interior: XcmV5Junctions.Here() },
@@ -74,50 +71,65 @@ function createTeleportXcmToBridgeHub(paraId: number) {
7471
XcmV5Junction.AccountId32({
7572
network: undefined,
7673
id: FixedSizeBinary.fromAccountId32(BRIDGE_HUB_BENEFICIARY),
77-
})
74+
}),
7875
),
7976
},
8077
}),
8178
],
8279
assets: [
83-
Enum("Teleport", XcmV5AssetFilter.Wild(XcmV5WildAsset.AllCounted(1))), // Send everything.
80+
Enum('Teleport', XcmV5AssetFilter.Wild(XcmV5WildAsset.AllCounted(1))), // Send everything.
8481
],
8582
}),
8683
]);
8784
}
8885

89-
async function estimateXcmFeesFromAssetHubToBridgeHub(xcm: any, assetHubApi: any) {
90-
console.log("=== Fee Estimation Process (Asset Hub → Bridge Hub) ===");
86+
async function estimateXcmFeesFromAssetHubToBridgeHub(
87+
xcm: any,
88+
assetHubApi: any,
89+
) {
90+
console.log('=== Fee Estimation Process (Asset Hub → Bridge Hub) ===');
9191

9292
// 1. LOCAL EXECUTION FEES on Asset Hub
93-
console.log("1. Calculating local execution fees on Asset Hub...");
93+
console.log('1. Calculating local execution fees on Asset Hub...');
9494
let localExecutionFees = 0n;
9595

96-
const weightResult = await assetHubApi.apis.XcmPaymentApi.query_xcm_weight(xcm);
96+
const weightResult =
97+
await assetHubApi.apis.XcmPaymentApi.query_xcm_weight(xcm);
9798
if (weightResult.success) {
98-
console.log("✓ XCM weight (Asset Hub):", weightResult.value);
99+
console.log('✓ XCM weight (Asset Hub):', weightResult.value);
99100

100101
// Convert weight to PAS fees from Asset Hub's perspective (parents:1, Here)
101-
const executionFeesResult = await assetHubApi.apis.XcmPaymentApi.query_weight_to_asset_fee(
102-
weightResult.value,
103-
XcmVersionedAssetId.V4({
104-
parents: 1,
105-
interior: XcmV3Junctions.Here(),
106-
})
107-
);
102+
const executionFeesResult =
103+
await assetHubApi.apis.XcmPaymentApi.query_weight_to_asset_fee(
104+
weightResult.value,
105+
XcmVersionedAssetId.V4({
106+
parents: 1,
107+
interior: XcmV3Junctions.Here(),
108+
}),
109+
);
108110

109111
if (executionFeesResult.success) {
110112
localExecutionFees = executionFeesResult.value;
111-
console.log("✓ Local execution fees (Asset Hub):", localExecutionFees.toString(), "PAS units");
113+
console.log(
114+
'✓ Local execution fees (Asset Hub):',
115+
localExecutionFees.toString(),
116+
'PAS units',
117+
);
112118
} else {
113-
console.log("✗ Failed to calculate local execution fees:", executionFeesResult.value);
119+
console.log(
120+
'✗ Failed to calculate local execution fees:',
121+
executionFeesResult.value,
122+
);
114123
}
115124
} else {
116-
console.log("✗ Failed to query XCM weight on Asset Hub:", weightResult.value);
125+
console.log(
126+
'✗ Failed to query XCM weight on Asset Hub:',
127+
weightResult.value,
128+
);
117129
}
118130

119131
// 2. DELIVERY FEES + REMOTE EXECUTION FEES
120-
console.log("\n2. Calculating delivery and remote execution fees...");
132+
console.log('\n2. Calculating delivery and remote execution fees...');
121133
let deliveryFees = 0n;
122134
let remoteExecutionFees = 0n; // Skipped (Bridge Hub descriptor not available)
123135

@@ -128,83 +140,119 @@ async function estimateXcmFeesFromAssetHubToBridgeHub(xcm: any, assetHubApi: any
128140
XcmV5Junction.AccountId32({
129141
id: FixedSizeBinary.fromAccountId32(ASSET_HUB_ACCOUNT),
130142
network: undefined,
131-
})
143+
}),
132144
),
133145
});
134146

135147
// Dry run the XCM locally on Asset Hub
136-
const dryRunResult = await assetHubApi.apis.DryRunApi.dry_run_xcm(origin, xcm);
148+
const dryRunResult = await assetHubApi.apis.DryRunApi.dry_run_xcm(
149+
origin,
150+
xcm,
151+
);
137152

138-
if (dryRunResult.success && dryRunResult.value.execution_result.type === "Complete") {
139-
console.log("✓ Local dry run on Asset Hub successful");
153+
if (
154+
dryRunResult.success &&
155+
dryRunResult.value.execution_result.type === 'Complete'
156+
) {
157+
console.log('✓ Local dry run on Asset Hub successful');
140158

141159
const { forwarded_xcms: forwardedXcms } = dryRunResult.value;
142160

143161
// Find the XCM message sent to Bridge Hub (parents:1, interior: X1(Parachain(1002)))
144162
const bridgeHubXcmEntry = forwardedXcms.find(
145163
([location, _]: [any, any]) =>
146-
(location.type === "V4" || location.type === "V5") &&
164+
(location.type === 'V4' || location.type === 'V5') &&
147165
location.value.parents === 1 &&
148-
location.value.interior?.type === "X1" &&
149-
location.value.interior.value?.type === "Parachain" &&
150-
location.value.interior.value.value === BRIDGE_HUB_PARA_ID
166+
location.value.interior?.type === 'X1' &&
167+
location.value.interior.value?.type === 'Parachain' &&
168+
location.value.interior.value.value === BRIDGE_HUB_PARA_ID,
151169
);
152170

153171
if (bridgeHubXcmEntry) {
154172
const [destination, messages] = bridgeHubXcmEntry;
155173
const remoteXcm = messages[0];
156174

157-
console.log("✓ Found XCM message to Bridge Hub");
175+
console.log('✓ Found XCM message to Bridge Hub');
158176

159177
// Calculate delivery fees from Asset Hub to Bridge Hub
160-
const deliveryFeesResult = await assetHubApi.apis.XcmPaymentApi.query_delivery_fees(
161-
destination,
162-
remoteXcm
163-
);
178+
const deliveryFeesResult =
179+
await assetHubApi.apis.XcmPaymentApi.query_delivery_fees(
180+
destination,
181+
remoteXcm,
182+
);
164183

165184
if (
166185
deliveryFeesResult.success &&
167-
deliveryFeesResult.value.type === "V5" &&
168-
deliveryFeesResult.value.value[0]?.fun?.type === "Fungible"
186+
deliveryFeesResult.value.type === 'V5' &&
187+
deliveryFeesResult.value.value[0]?.fun?.type === 'Fungible'
169188
) {
170189
deliveryFees = deliveryFeesResult.value.value[0].fun.value;
171-
console.log("✓ Delivery fees:", deliveryFees.toString(), "PAS units");
190+
console.log('✓ Delivery fees:', deliveryFees.toString(), 'PAS units');
172191
} else {
173-
console.log("✗ Failed to calculate delivery fees:", deliveryFeesResult);
192+
console.log('✗ Failed to calculate delivery fees:', deliveryFeesResult);
174193
}
175194

176-
// 3. REMOTE EXECUTION FEES on Bridge Hub
177-
console.log("\n3. Calculating remote execution fees on Bridge Hub");
178-
try {
179-
const bridgeHubClient = createClient(withPolkadotSdkCompat(getWsProvider(BRIDGE_HUB_RPC_ENDPOINT)));
180-
const bridgeHubApi = bridgeHubClient.getTypedApi(paseoBridgeHub);
181-
const remoteWeightResult = await bridgeHubApi.apis.XcmPaymentApi.query_xcm_weight(remoteXcm);
182-
const remoteFeesResult = await bridgeHubApi.apis.XcmPaymentApi.query_weight_to_asset_fee(
183-
remoteWeightResult.value as { ref_time: bigint; proof_size: bigint },
184-
XcmVersionedAssetId.V4({ parents: 1, interior: XcmV3Junctions.Here() })
195+
// 3. REMOTE EXECUTION FEES on Bridge Hub
196+
console.log('\n3. Calculating remote execution fees on Bridge Hub');
197+
try {
198+
const bridgeHubClient = createClient(
199+
withPolkadotSdkCompat(getWsProvider(BRIDGE_HUB_RPC_ENDPOINT)),
200+
);
201+
const bridgeHubApi = bridgeHubClient.getTypedApi(paseoBridgeHub);
202+
const remoteWeightResult =
203+
await bridgeHubApi.apis.XcmPaymentApi.query_xcm_weight(remoteXcm);
204+
const remoteFeesResult =
205+
await bridgeHubApi.apis.XcmPaymentApi.query_weight_to_asset_fee(
206+
remoteWeightResult.value as {
207+
ref_time: bigint;
208+
proof_size: bigint;
209+
},
210+
XcmVersionedAssetId.V4({
211+
parents: 1,
212+
interior: XcmV3Junctions.Here(),
213+
}),
185214
);
186-
bridgeHubClient.destroy();
187-
remoteExecutionFees = remoteFeesResult.value as bigint;
188-
console.log("✓ Remote execution fees:", remoteExecutionFees.toString(), "PAS units");
189-
} catch (error) {
190-
console.error("Error calculating remote execution fees on Bridge Hub:", error);
191-
}
215+
bridgeHubClient.destroy();
216+
remoteExecutionFees = remoteFeesResult.value as bigint;
217+
console.log(
218+
'✓ Remote execution fees:',
219+
remoteExecutionFees.toString(),
220+
'PAS units',
221+
);
222+
} catch (error) {
223+
console.error(
224+
'Error calculating remote execution fees on Bridge Hub:',
225+
error,
226+
);
227+
}
192228
} else {
193-
console.log("✗ No XCM message found to Bridge Hub");
229+
console.log('✗ No XCM message found to Bridge Hub');
194230
}
195231
} else {
196-
console.log("✗ Local dry run failed on Asset Hub:", dryRunResult.value);
232+
console.log('✗ Local dry run failed on Asset Hub:', dryRunResult.value);
197233
}
198234

199235
// 4. TOTAL FEES
200236
const totalFees = localExecutionFees + deliveryFees + remoteExecutionFees;
201237

202-
console.log("\n=== Fee Summary (Asset Hub → Bridge Hub) ===");
203-
console.log("Local execution fees:", localExecutionFees.toString(), "PAS units");
204-
console.log("Delivery fees:", deliveryFees.toString(), "PAS units");
205-
console.log("Remote execution fees:", remoteExecutionFees.toString(), "PAS units");
206-
console.log("TOTAL FEES:", totalFees.toString(), "PAS units");
207-
console.log("TOTAL FEES:", (Number(totalFees) / Number(PAS_UNITS)).toFixed(4), "PAS");
238+
console.log('\n=== Fee Summary (Asset Hub → Bridge Hub) ===');
239+
console.log(
240+
'Local execution fees:',
241+
localExecutionFees.toString(),
242+
'PAS units',
243+
);
244+
console.log('Delivery fees:', deliveryFees.toString(), 'PAS units');
245+
console.log(
246+
'Remote execution fees:',
247+
remoteExecutionFees.toString(),
248+
'PAS units',
249+
);
250+
console.log('TOTAL FEES:', totalFees.toString(), 'PAS units');
251+
console.log(
252+
'TOTAL FEES:',
253+
(Number(totalFees) / Number(PAS_UNITS)).toFixed(4),
254+
'PAS',
255+
);
208256

209257
return {
210258
localExecutionFees,
@@ -216,7 +264,9 @@ async function estimateXcmFeesFromAssetHubToBridgeHub(xcm: any, assetHubApi: any
216264

217265
async function main() {
218266
// Connect to the Asset Hub parachain
219-
const assetHubClient = createClient(withPolkadotSdkCompat(getWsProvider(PASEO_ASSET_HUB_RPC_ENDPOINT)));
267+
const assetHubClient = createClient(
268+
withPolkadotSdkCompat(getWsProvider(PASEO_ASSET_HUB_RPC_ENDPOINT)),
269+
);
220270

221271
// Get the typed API for Asset Hub
222272
const assetHubApi = assetHubClient.getTypedApi(paseoAssetHub);
@@ -225,11 +275,11 @@ async function main() {
225275
// Create the XCM message for teleport (Asset Hub → Bridge Hub)
226276
const xcm = createTeleportXcmToBridgeHub(BRIDGE_HUB_PARA_ID);
227277

228-
console.log("=== XCM Teleport: Paseo Asset Hub → Bridge Hub ===");
229-
console.log("From:", ASSET_HUB_ACCOUNT, "(Alice on Asset Hub)");
230-
console.log("To:", BRIDGE_HUB_BENEFICIARY, "(Beneficiary on Bridge Hub)");
231-
console.log("Amount:", "1 PAS");
232-
console.log("");
278+
console.log('=== XCM Teleport: Paseo Asset Hub → Bridge Hub ===');
279+
console.log('From:', ASSET_HUB_ACCOUNT, '(Alice on Asset Hub)');
280+
console.log('To:', BRIDGE_HUB_BENEFICIARY, '(Beneficiary on Bridge Hub)');
281+
console.log('Amount:', '1 PAS');
282+
console.log('');
233283

234284
// Estimate all fees
235285
const fees = await estimateXcmFeesFromAssetHubToBridgeHub(xcm, assetHubApi);
@@ -244,12 +294,12 @@ async function main() {
244294
},
245295
});
246296

247-
console.log("\n=== Transaction Details ===");
248-
console.log("Transaction hex:", (await tx.getEncodedData()).asHex());
249-
console.log("Ready to submit!");
297+
console.log('\n=== Transaction Details ===');
298+
console.log('Transaction hex:', (await tx.getEncodedData()).asHex());
299+
console.log('Ready to submit!');
250300
} catch (error) {
251-
console.log("Error stack:", (error as Error).stack);
252-
console.error("Error occurred:", (error as Error).message);
301+
console.log('Error stack:', (error as Error).stack);
302+
console.error('Error occurred:', (error as Error).message);
253303
if ((error as Error).cause) {
254304
console.dir((error as Error).cause, { depth: null });
255305
}
@@ -259,4 +309,4 @@ async function main() {
259309
}
260310
}
261311

262-
main().catch(console.error);
312+
main().catch(console.error);

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