import { BigNumberish, BytesLike, Signer } from 'ethers';
import { PermitTransferFrom } from '@uniswap/permit2-sdk';
export declare const PERMIT2 = "0x000000000022D473030F116dDEE9F6B43aC78BA3";
export interface PremiaPermit2 {
    deadline: BigNumberish;
    nonce: BigNumberish;
    permittedAmount: BigNumberish;
    permittedToken: string;
    signature: BytesLike;
}
export declare function getRandomPermit2Nonce(): bigint;
export declare function signPermit2(signer: Signer, permit: PermitTransferFrom): Promise<string>;
export declare function signPremiaPermit2(signer: Signer, permit: PermitTransferFrom): Promise<PremiaPermit2>;
export declare function getEmptyPremiaPermit2(): PremiaPermit2;