Test isContract(address, chainId)

examples/send-tx.ts

@@ -19,7 +19,7 @@ async function main(): Promise<void> {
     privateKey: nearAccountPrivateKey,
   });
   const deployed = await txManager.safeDeployed(chainId);
-  console.log("Deployed?", deployed)
+  console.log("Safe Deployed:", deployed);
   const transactions = [
     // TODO: Replace dummy transaction with real user transaction.
     {

src/lib/bundler.ts

@@ -25,11 +25,7 @@ export class Erc4337Bundler {
     this.entryPointAddress = entryPointAddress;
     this.apiKey = apiKey;
     this.chainId = chainId;
-    this.provider = new ethers.JsonRpcProvider(bundlerUrl(chainId, apiKey));
-  }
-
-  client(chainId: number): ethers.JsonRpcProvider {
-    return new ethers.JsonRpcProvider(bundlerUrl(chainId, this.apiKey));
+    this.provider = new ethers.JsonRpcProvider(bundlerUrl(chainId, this.apiKey));
   }
 
   async getPaymasterData(

src/util.ts

@@ -1,7 +1,7 @@
+import { Network } from "near-ca";
 import { Address, Hex, concatHex, encodePacked, toHex } from "viem";
 
 import { PaymasterData, MetaTransaction } from "./types";
-import { Network } from "near-ca";
 
 export const PLACEHOLDER_SIG = encodePacked(["uint48", "uint48"], [0, 0]);
 
@@ -25,11 +25,11 @@ export function packPaymasterData(data: PaymasterData): Hex {
   return (
     data.paymaster
       ? concatHex([
-        data.paymaster!,
-        toHex(BigInt(data.paymasterVerificationGasLimit || 0n), { size: 16 }),
-        toHex(BigInt(data.paymasterPostOpGasLimit || 0n), { size: 16 }),
-        data.paymasterData || "0x",
-      ])
+          data.paymaster!,
+          toHex(BigInt(data.paymasterVerificationGasLimit || 0n), { size: 16 }),
+          toHex(BigInt(data.paymasterPostOpGasLimit || 0n), { size: 16 }),
+          data.paymasterData || "0x",
+        ])
       : "0x"
   ) as Hex;
 }
@@ -38,7 +38,10 @@ export function containsValue(transactions: MetaTransaction[]): boolean {
   return transactions.some((tx) => tx.value !== "0");
 }
 
-export async function isContract(address: Address, chainId: number): Promise<boolean> {
+export async function isContract(
+  address: Address,
+  chainId: number
+): Promise<boolean> {
   const client = Network.fromChainId(chainId).client;
   return !!(await client.getCode({ address }));
 }

tests/utils.spec.ts

@@ -1,9 +1,11 @@
 import { ethers } from "ethers";
+import { zeroAddress } from "viem";
 
 import { PaymasterData } from "../src";
 import {
   PLACEHOLDER_SIG,
   containsValue,
+  isContract,
   packGas,
   packPaymasterData,
   packSignature,
@@ -65,4 +67,12 @@ describe("Utility Functions (mostly byte packing)", () => {
     expect(containsValue([VALUE_TX])).toBe(true);
     expect(containsValue([VALUE_TX, NO_VALUE_TX])).toBe(true);
   });
+
+  it("isContract", () => {
+    const chainId = 11155111;
+    expect(isContract(zeroAddress, chainId)).toBe(false);
+    expect(
+      isContract("0x9008D19f58AAbD9eD0D60971565AA8510560ab41", chainId)
+    ).toBe(true);
+  });
 });