import { Wallet } from '@ethersproject/wallet';
export declare const PERMIT_SIGNER: Wallet;
export declare const PERMIT_GAS_LIMIT_MIN: Record<number, number>;
export declare const DEFAULT_PERMIT_GAS_LIMIT = "80000";
export declare const DEFAULT_PERMIT_VALUE: string;
export declare const DEFAULT_PERMIT_DURATION: number;
export declare const TOKENS_TO_SKIP_VERSION: Set<string>;