feat: biconomy example (#154)

Author: HiteshMittal07

.changeset/config.json

@@ -26,6 +26,7 @@
     "viem-adapter",
     "light-account-sponsored-payment",
     "simple-account-sponsored-payment",
+    "biconomy-sponsored-payment",
     "nonces-example",
     "session-key"
   ],

examples/biconomy-sponsored/.env.example

@@ -0,0 +1,2 @@
+GELATO_API_KEY="Get your api key at https://app.gelato.cloud/"
+PRIVATE_KEY="0x<PRIVATE_KEY>" # Optional

examples/biconomy-sponsored/README.md

@@ -0,0 +1,22 @@
+# Biconomy Sponsored Payment Example
+
+## Prerequisites
+
+- Node.js >= 23
+- pnpm >= 10.8.1
+
+## Quick Start
+
+1. Install dependencies:
+
+```bash
+pnpm install
+```
+
+## Running Examples
+
+1. Run the example:
+
+```bash
+pnpm dev
+```

examples/biconomy-sponsored/package.json

@@ -0,0 +1,18 @@
+{
+  "name": "biconomy-sponsored-payment",
+  "private": true,
+  "version": "0.0.1",
+  "scripts": {
+    "dev": "tsx src/index.ts"
+  },
+  "dependencies": {
+    "@gelatonetwork/smartwallet": "workspace:*",
+    "viem": "catalog:"
+  },
+  "devDependencies": {
+    "@types/node": "latest",
+    "dotenv": "17.2.1",
+    "tsx": "4.20.5",
+    "typescript": "catalog:"
+  }
+}

examples/biconomy-sponsored/src/index.ts

@@ -0,0 +1,89 @@
+import {
+  createGelatoSmartWalletClient,
+  type GelatoTaskStatus,
+  sponsored
+} from "@gelatonetwork/smartwallet";
+import { custom, type GelatoSmartAccountExtension } from "@gelatonetwork/smartwallet/accounts";
+import "dotenv/config";
+import { createPublicClient, createWalletClient, type Hex, http } from "viem";
+import { entryPoint07Abi, entryPoint07Address } from "viem/account-abstraction";
+import { generatePrivateKey, privateKeyToAccount } from "viem/accounts";
+import { baseSepolia } from "viem/chains";
+import { ERC4337Encoding } from "../../../src/_dist/wallet";
+
+const gelatoApiKey = process.env.GELATO_API_KEY;
+
+if (!gelatoApiKey) {
+  throw new Error("GELATO_API_KEY is not set");
+}
+
+const privateKey = (process.env.PRIVATE_KEY ?? generatePrivateKey()) as Hex;
+const owner = privateKeyToAccount(privateKey);
+
+const publicClient = createPublicClient({
+  chain: baseSepolia,
+  transport: http()
+});
+
+(async () => {
+  // Defining an EIP7702 account using as delegation address "0x00000000383e8cBe298514674Ea60Ee1d1de50ac" (Nexus v1.2.0)
+  // Using ERC4337 and entry point v0.7
+  const account = await custom<
+    typeof entryPoint07Abi,
+    "0.7",
+    GelatoSmartAccountExtension,
+    true
+  >({
+    authorization: {
+      account: owner,
+      address: "0x00000000383e8cBe298514674Ea60Ee1d1de50ac", // Nexus v1.2.0
+    },
+    client: publicClient,
+    eip7702: true,
+    entryPoint: {
+      abi: entryPoint07Abi,
+      address: entryPoint07Address,
+      version: "0.7",
+    },
+    owner,
+    scw: {
+      encoding: ERC4337Encoding.ERC7579,
+    },
+  });
+
+  console.log("Account address:", account.address);
+
+  const client = createWalletClient({
+    account,
+    chain: baseSepolia,
+    transport: http(),
+  });
+
+  const swc = await createGelatoSmartWalletClient(client, {
+    apiKey: gelatoApiKey,
+  });
+
+  const response = await swc.execute({
+    calls: [
+      {
+        data: "0xd09de08a",
+        to: "0xEEeBe2F778AA186e88dCf2FEb8f8231565769C27",
+        value: 0n,
+      },
+    ],
+    payment: sponsored(),
+  });
+
+  console.log(`Your Gelato id is: ${response.id}`);
+  console.log("Waiting for transaction to be confirmed...");
+
+  // Listen for events
+  response.on("success", (status: GelatoTaskStatus) => {
+    console.log(`Transaction successful: ${status.transactionHash}`);
+    process.exit(0);
+  });
+  response.on("error", (error: Error) => {
+    console.error(`Transaction failed: ${error.message}`);
+    process.exit(1);
+  });
+})();

examples/biconomy-sponsored/tsconfig.json

@@ -0,0 +1,3 @@
+{
+  "extends": "../../tsconfig.json"
+}