import { ChainId } from '@sky-mavis/katana-core';
import { BigNumber } from 'ethers';
/**
 * An asynchronous function which will get the block timestamp and combine it with user settings for a deadline.
 * Should be used for any submitted transactions, as it uses an on-chain timestamp instead of a client timestamp.
 * @param userDeadline The user setting's deadline in seconds
 * @returns A promise that resolves to a BigNumber representing the deadline
 */
declare const getDeadline: (userDeadline: number, chainId: ChainId) => Promise<BigNumber>;
export { getDeadline };
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