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Add crosschain meeclient tests - not tested
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‎scripts/biconomy-migration/sample-app-meeclient/05-crosschain-native-transfer-meeclient.ts‎

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/**
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* 03-crosschain-native-transfer-meeclient.ts
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*
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* Cross-chain native ETH transfer using MEE Client.
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* Sends ETH on Base AND Optimism in a single Supertransaction.
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*
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* NEW FEATURE:
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* - Demonstrates MEE Client's cross-chain capabilities
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* - Multiple instructions for different chains
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* - Single quote/signature for entire cross-chain bundle
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* - Automatic gas sponsorship across all chains
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*/
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import { ethers } from "ethers";
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import * as fs from "fs";
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import * as path from "path";
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import { createPublicClient, http, parseEther, type Hex } from "viem";
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import { privateKeyToAccount } from "viem/accounts";
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import { base, optimism } from "viem/chains";
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import { createMeeClient, toMultichainNexusAccount, getMEEVersion, MEEVersion } from "@biconomy/abstractjs";
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async function crosschainNativeTransferMeeClient() {
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console.log("🧪 Cross-Chain Native ETH Transfer - MEE Client\n");
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console.log("=".repeat(80));
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console.log("📋 Chains: Base Mainnet (8453) + Optimism Mainnet (10)");
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console.log("📋 API: createMeeClient() + toMultichainNexusAccount()");
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console.log("📋 Sponsorship: Biconomy hosted (all chains)\n");
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console.log("=".repeat(80));
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// ============================================================================
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// WALLET INFO
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// ============================================================================
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const walletAddress = "0x846A51Ac27990D255Eaa0a732A9411F21cAF91b6" as `0x${string}`;
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const ownerAddress = "0xeDC117090236293afEBb179260e8B9dd5bffe4dC" as `0x${string}`;
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console.log("\n📋 Migrated Wallet:");
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console.log("-".repeat(80));
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console.log(` Address: ${walletAddress}`);
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console.log(` Owner: ${ownerAddress}`);
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console.log(` Type: Passport → Nexus (migrated)\n`);
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console.log("=".repeat(80));
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// ============================================================================
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// SETUP SIGNER
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// ============================================================================
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console.log("\n⚙️ Setting up signer...");
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const privateKeyRaw = process.env.MIGRATION_TEST_OWNER_PK;
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if (!privateKeyRaw) {
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throw new Error("MIGRATION_TEST_OWNER_PK not found in .env");
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}
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const privateKey = privateKeyRaw.startsWith("0x") ? privateKeyRaw : `0x${privateKeyRaw}`;
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const viemAccount = privateKeyToAccount(privateKey as Hex);
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console.log(` Owner EOA: ${viemAccount.address}`);
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if (viemAccount.address.toLowerCase() !== ownerAddress.toLowerCase()) {
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throw new Error(
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`Signer mismatch! Expected ${ownerAddress}, got ${viemAccount.address}`
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);
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}
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console.log(" ✅ Signer configured\n");
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console.log("=".repeat(80));
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// ============================================================================
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// SETUP PUBLIC CLIENTS FOR BOTH CHAINS
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// ============================================================================
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console.log("\n🔗 Setting up public clients...");
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const baseRpcUrl = process.env.BASE_MAINNET_ENDPOINT || "https://mainnet.base.org";
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const optimismRpcUrl = process.env.OPTIMISM_MAINNET_ENDPOINT || "https://mainnet.optimism.io";
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const basePublicClient = createPublicClient({
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chain: base,
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transport: http(baseRpcUrl),
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});
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const optimismPublicClient = createPublicClient({
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chain: optimism,
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transport: http(optimismRpcUrl),
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});
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console.log(" ✅ Base client configured");
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console.log(" ✅ Optimism client configured\n");
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console.log("=".repeat(80));
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// ============================================================================
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// CHECK WALLET BALANCES ON BOTH CHAINS
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// ============================================================================
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console.log("\n💰 Checking Wallet Balances...");
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const baseBalance = await basePublicClient.getBalance({
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address: walletAddress,
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});
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const optimismBalance = await optimismPublicClient.getBalance({
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address: walletAddress,
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});
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console.log(` Base: ${ethers.utils.formatEther(baseBalance.toString())} ETH`);
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console.log(` Optimism: ${ethers.utils.formatEther(optimismBalance.toString())} ETH\n`);
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if (baseBalance < parseEther("0.00002")) {
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throw new Error("Insufficient balance on Base");
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}
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if (optimismBalance < parseEther("0.00002")) {
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throw new Error("Insufficient balance on Optimism");
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}
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console.log("=".repeat(80));
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// ============================================================================
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// CREATE MEE CLIENT WITH MULTICHAIN SUPPORT
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// ============================================================================
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console.log("\n🚀 Creating Multichain MEE Client...");
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const apiKey = process.env.SUPERTX_API_KEY;
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if (!apiKey) {
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throw new Error("SUPERTX_API_KEY not found in .env");
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}
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console.log(` API Key: ${apiKey.substring(0, 10)}...${apiKey.substring(apiKey.length - 4)}`);
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console.log(` Chains: Base (${base.id}) + Optimism (${optimism.id})`);
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console.log(` Account: ${walletAddress}\n`);
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try {
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// Create Multichain Nexus account with both chains
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const nexusAccount = await toMultichainNexusAccount({
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signer: viemAccount,
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chainConfigurations: [
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{
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chain: base,
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transport: http(baseRpcUrl),
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version: getMEEVersion(MEEVersion.V2_1_0),
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},
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{
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chain: optimism,
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transport: http(optimismRpcUrl),
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version: getMEEVersion(MEEVersion.V2_1_0),
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},
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],
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accountAddress: walletAddress,
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});
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console.log(" ✅ Multichain Nexus Account created (Base + Optimism)");
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// Create MEE Client
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const meeClient = await createMeeClient({
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account: nexusAccount,
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apiKey: apiKey,
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});
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console.log(" ✅ MEE Client created\n");
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console.log("=".repeat(80));
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// ========================================================================
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// SEND CROSS-CHAIN NATIVE ETH TRANSFER
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// ========================================================================
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console.log("\n🚀 Sending Cross-Chain Native ETH Transfer...");
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const testAmount = parseEther("0.00001");
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const recipientAddress = "0xF04fF8e30816858dc4ec5436d3e148D1B9D84b6B" as `0x${string}`; // Native Nexus wallet
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console.log(` From: ${walletAddress}`);
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console.log(` To: ${recipientAddress}`);
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console.log(` Amount: ${ethers.utils.formatEther(testAmount.toString())} ETH (per chain)`);
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console.log(` Chains: Base + Optimism`);
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console.log(` Sponsored: YES (Biconomy)\n`);
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console.log(" 📋 Building cross-chain quote with gas sponsorship...");
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const quote = await meeClient.getQuote({
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sponsorship: true,
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instructions: [
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// Instruction 1: Base Mainnet
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{
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calls: [
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{
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to: recipientAddress,
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value: testAmount,
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},
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],
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chainId: base.id,
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},
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// Instruction 2: Optimism Mainnet
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{
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calls: [
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{
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to: recipientAddress,
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value: testAmount,
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},
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],
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chainId: optimism.id,
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},
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],
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});
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console.log(" ✅ Cross-chain quote received!\n");
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console.log(" 🖊️ Signing quote...");
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const signedQuote = await meeClient.signQuote({ quote });
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console.log(" ✅ Quote signed!\n");
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console.log(" 📤 Executing signed quote (cross-chain)...");
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const result = await meeClient.executeSignedQuote({ signedQuote });
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const hash = result.hash;
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console.log(` ✅ Cross-chain transaction submitted!`);
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console.log(` Supertransaction Hash: ${hash}\n`);
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console.log(" ⏳ Waiting for confirmation on BOTH chains...\n");
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const receipt = await meeClient.waitForSupertransactionReceipt({ hash: hash as `0x${string}` });
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const isSuccess = receipt.transactionStatus === "MINED_SUCCESS" ||
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(receipt.userOps && receipt.userOps.every((op: any) =>
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op.executionStatus === "MINED_SUCCESS"
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));
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console.log(` Status: ${isSuccess ? "✅ SUCCESS" : "❌ FAILED"}`);
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console.log(` Transaction Status: ${receipt.transactionStatus || "N/A"}\n`);
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// Show UserOp details (one per chain)
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if (receipt.userOps && receipt.userOps.length > 0) {
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console.log(` 📊 UserOps executed: ${receipt.userOps.length} (across ${receipt.userOps.length} chains)`);
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receipt.userOps.forEach((op: any, idx: number) => {
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const chainName = idx === 0 ? "Base" : "Optimism";
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console.log(` UserOp #${idx + 1} (${chainName}):`);
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console.log(` Execution Status: ${op.executionStatus || "N/A"}`);
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console.log(` TX Hash: ${op.executionData || "N/A"}`);
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});
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console.log();
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}
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// Show explorer links (one per chain)
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if (receipt.explorerLinks && receipt.explorerLinks.length > 0) {
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console.log(` 🔗 Explorer Links (${receipt.explorerLinks.length} chains):`);
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receipt.explorerLinks.forEach((link: string, idx: number) => {
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const chainName = link.includes("basescan") ? "Base" : "Optimism";
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console.log(` [${chainName}] ${link}`);
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});
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console.log();
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}
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console.log("=".repeat(80));
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// ========================================================================
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// VERIFY BALANCES ON BOTH CHAINS
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// ========================================================================
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console.log("\n🔍 Verifying Balances...");
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const newBaseBalance = await basePublicClient.getBalance({
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address: walletAddress,
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});
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const newOptimismBalance = await optimismPublicClient.getBalance({
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address: walletAddress,
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});
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console.log(` Base Before: ${ethers.utils.formatEther(baseBalance.toString())} ETH`);
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console.log(` Base After: ${ethers.utils.formatEther(newBaseBalance.toString())} ETH`);
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console.log(` Optimism Before: ${ethers.utils.formatEther(optimismBalance.toString())} ETH`);
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console.log(` Optimism After: ${ethers.utils.formatEther(newOptimismBalance.toString())} ETH\n`);
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console.log("=".repeat(80));
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// ========================================================================
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// SAVE RESULT
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// ========================================================================
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const resultData = {
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timestamp: new Date().toISOString(),
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type: "cross-chain-native-transfer",
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wallet: walletAddress,
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owner: ownerAddress,
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supertxHash: hash,
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success: isSuccess,
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transactionStatus: receipt.transactionStatus,
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userOpsCount: receipt.userOps?.length || 0,
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chains: [
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{
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name: "base",
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chainId: base.id,
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blockchainTxHash: receipt.receipts?.[0]?.transactionHash || null,
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balanceBefore: baseBalance.toString(),
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balanceAfter: newBaseBalance.toString(),
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},
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{
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name: "optimism",
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chainId: optimism.id,
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blockchainTxHash: receipt.receipts?.[1]?.transactionHash || null,
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balanceBefore: optimismBalance.toString(),
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balanceAfter: newOptimismBalance.toString(),
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},
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],
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explorerLinks: receipt.explorerLinks || [],
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sponsored: true,
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testAmount: testAmount.toString(),
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recipient: recipientAddress,
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};
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const resultPath = path.join(__dirname, "03-result.json");
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fs.writeFileSync(resultPath, JSON.stringify(resultData, null, 2));
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console.log(`\n📄 Result saved to: ${resultPath}\n`);
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console.log("=".repeat(80));
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if (isSuccess) {
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console.log("\n🎉 CROSS-CHAIN NATIVE TRANSFER: SUCCESS!\n");
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console.log("✅ MEE Client cross-chain works perfectly!");
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console.log("✅ Gas sponsorship on BOTH chains");
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console.log("✅ UserOps confirmed on Base AND Optimism");
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console.log(`✅ Supertransaction: ${hash}\n`);
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} else {
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console.log("\n⚠️ CROSS-CHAIN NATIVE TRANSFER: NEEDS INVESTIGATION\n");
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}
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console.log("=".repeat(80));
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} catch (error: any) {
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console.log("\n❌ Test Failed!");
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console.log(` Error: ${error.message}\n`);
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console.log("=".repeat(80));
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throw error;
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}
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}
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crosschainNativeTransferMeeClient()
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.then(() => process.exit(0))
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.catch((error) => {
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console.error("\n❌ Test Failed!");
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console.error(` Error: ${error.message}\n`);
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process.exit(1);
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});
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