@owlprotocol/contracts-account-abstraction/lib/esm/eip1193/createPaymasterEIP1193.js

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

import {
  hexToNumber,
  numberToHex
} from "viem";
import { getAction } from "viem/utils";
import { getPaymasterData, getPaymasterStubData, getUserOperationGasPrice } from "../actions/index.js";
import { decodeUserOp } from "../models/UserOperation.js";
const paymasterRpcMethods = [
  "pimlico_getUserOperationGasPrice",
  "pm_getPaymasterStubData",
  "pm_getPaymasterData"
];
function isPaymasterRpcMethod(method) {
  return paymasterRpcMethods.includes(method);
}
function createBackendPaymasterEIP1193(client) {
  return async function(args) {
    try {
      if (args.method === "pimlico_getUserOperationGasPrice") {
        const gasPrice = await getAction(client, getUserOperationGasPrice, "getUserOperationGasPrice")({});
        return {
          slow: {
            maxFeePerGas: numberToHex(gasPrice.slow.maxFeePerGas),
            maxPriorityFeePerGas: numberToHex(gasPrice.slow.maxPriorityFeePerGas)
          },
          standard: {
            maxFeePerGas: numberToHex(gasPrice.slow.maxFeePerGas),
            maxPriorityFeePerGas: numberToHex(gasPrice.slow.maxPriorityFeePerGas)
          },
          fast: {
            maxFeePerGas: numberToHex(gasPrice.slow.maxFeePerGas),
            maxPriorityFeePerGas: numberToHex(gasPrice.slow.maxPriorityFeePerGas)
          }
        };
      } else if (args.method === "pm_getPaymasterStubData") {
        const [userOperationHex, entryPointAddress, chainIdHex] = args.params;
        const userOperation = decodeUserOp(userOperationHex);
        const {
          paymaster,
          paymasterData,
          paymasterVerificationGasLimit,
          paymasterPostOpGasLimit,
          sponsor,
          isFinal
        } = await getAction(
          client,
          getPaymasterStubData,
          "getPaymasterStubData"
        )({ ...userOperation, entryPointAddress, chainId: hexToNumber(chainIdHex) });
        const result = {
          paymaster,
          paymasterData,
          //Interfaces don't match between official viem action & RPC. Default to 0
          paymasterVerificationGasLimit: paymasterVerificationGasLimit ? numberToHex(paymasterVerificationGasLimit) : "0x",
          paymasterPostOpGasLimit: numberToHex(paymasterPostOpGasLimit)
        };
        if (sponsor) {
          result.sponsor = sponsor;
        }
        if (isFinal != void 0) {
          result.isFinal = isFinal;
        }
        return result;
      } else if (args.method === "pm_getPaymasterData") {
        const [userOperationHex, entryPointAddress, chainIdHex] = args.params;
        const userOperation = decodeUserOp(userOperationHex);
        const { paymaster, paymasterData, paymasterVerificationGasLimit, paymasterPostOpGasLimit } = await getAction(
          client,
          getPaymasterData,
          "getPaymasterData"
        )({ ...userOperation, entryPointAddress, chainId: hexToNumber(chainIdHex) });
        const result = {
          paymaster,
          paymasterData,
          //Interfaces don't match between official viem action & RPC. Default to 0
          paymasterVerificationGasLimit: paymasterVerificationGasLimit ? numberToHex(paymasterVerificationGasLimit) : "0x",
          //Interfaces don't match between official viem action & RPC. Default to 0
          paymasterPostOpGasLimit: paymasterPostOpGasLimit ? numberToHex(paymasterPostOpGasLimit) : "0x"
        };
        return result;
      }
    } catch (error) {
      return null;
    }
  };
}
export {
  createBackendPaymasterEIP1193,
  isPaymasterRpcMethod,
  paymasterRpcMethods
};