import { GasOverheads } from "../models/GasOverheads.js";
import { PackedUserOperation } from "../models/PackedUserOperation.js";
/**
 * calculate the preVerificationGas of the given UserOperation
 * preVerificationGas (by definition) is the cost overhead that can't be calculated on-chain.
 * it is based on parameters that are defined by the Ethereum protocol for external transactions.
 * @param userOp filled userOp to calculate. The only possible missing fields can be the signature and preVerificationGas itself
 * @param overheads gas overheads to use, to override the default values
 */
export declare function calcDefaultPreVerificationGas(packedUserOperation: PackedUserOperation, overheads?: Partial<GasOverheads>): bigint;