declare function useGetApproxBlockTimestamp(): (blockNumber: number) => Promise<number>;
declare function useApproxBlockTimestamp(blockNumber: number | undefined): {
    blockTimestamp: undefined;
    isBlockTimestampReady: false;
} | {
    blockTimestamp: number;
    isBlockTimestampReady: true;
};
export { useApproxBlockTimestamp, useGetApproxBlockTimestamp };