@owlprotocol/contracts-account-abstraction/lib/esm/actions/paymaster/getPaymasterStubData.js

ERC4337 Account Abstraction support for deploying relevant smart contracts and interacting with UserOps.

import { concatHex } from "viem";
import { encodeAbiParameters, getAction } from "viem/utils";
import { dummySignature } from "../../models/UserOperation.js";
import { getSupportedEntryPoints } from "../bundler/getSupportedEntryPoints.js";
async function getPaymasterStubData(client, parameters) {
  const { entryPointAddress } = parameters;
  const { paymaster } = client;
  const supportedEntryPoints = await getAction(client, getSupportedEntryPoints, "getSupportedEntryPoints")({});
  if (!supportedEntryPoints.includes(entryPointAddress)) {
    throw new Error(`Unsupported entrypoint ${entryPointAddress}, expected one of ${supportedEntryPoints}`);
  }
  const validUntil = Date.now() + 3600;
  const validAfter = 0;
  const paymasterDataUnsigned = encodeAbiParameters(
    [
      { name: "validUntil", type: "uint48" },
      { name: "validAfter", type: "uint48" }
    ],
    [validUntil, validAfter]
  );
  const paymasterDataSigned = concatHex([paymasterDataUnsigned, dummySignature]);
  const sponsor = {
    name: "Owl Protocol",
    icon: "https://example.com"
  };
  return {
    paymaster,
    paymasterData: paymasterDataSigned,
    paymasterVerificationGasLimit: 100000n,
    paymasterPostOpGasLimit: 100000n,
    sponsor,
    isFinal: false
  };
}
export {
  getPaymasterStubData
};