@owlprotocol/contracts-account-abstraction/lib/esm/gasestimation/calcDefaultPreVerificationGas.js

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

import { hexToBytes, toHex } from "viem";
import { DefaultGasOverheads } from "../models/GasOverheads.js";
import { packUserOperation } from "../models/PackedUserOperation.js";
function calcDefaultPreVerificationGas(packedUserOperation, overheads) {
  const ov = { ...DefaultGasOverheads, ...overheads ?? {} };
  const p = { ...packedUserOperation };
  p.signature = p.signature === "0x" ? toHex(Buffer.alloc(ov.sigSize, 1)) : p.signature;
  const packed = hexToBytes(packUserOperation(p));
  const lengthInWord = (packed.length + 31) / 32;
  const callDataCost = packed.map((x) => x === 0 ? ov.zeroByte : ov.nonZeroByte).reduce((sum, x) => sum + x);
  const ret = Math.round(callDataCost + ov.fixed / ov.bundleSize + ov.perUserOp + ov.perUserOpWord * lengthInWord);
  return BigInt(ret);
}
export {
  calcDefaultPreVerificationGas
};