import { Account, Address, GetContractReturnType, Hex, WalletClient } from "viem";
import { Currency, ERC20ABI } from "../data";
export declare enum PermitVariant {
    Unsupported = 0,
    EIP2612Canonical = 1,
    DAI = 2,
    Polygon2612 = 3,
    PolygonEMT = 4
}
export declare class PermitCreationError extends Error {
}
export declare function signPermitForAddressAndValue(cur: Currency, client: WalletClient, account: Account, spender: Address, value: bigint, contract?: GetContractReturnType<typeof ERC20ABI, WalletClient, Hex>, deadline?: bigint): Promise<`0x${string}`>;