import { Bitcoind } from '../../types';
type EstimateSmartFeeParams = {
    bitcoind: Bitcoind;
    conf_target: number;
    estimate_mode?: string;
};
/**
 * estimatesmartfee conf_target ( "estimate_mode" )
 *
 * Estimates the approximate fee per kilobyte needed for a transaction to begin
 * confirmation within conf_target blocks if possible and return the number of blocks
 * for which the estimate is valid. Uses virtual transaction size as defined
 * in BIP 141 (witness data is discounted).
 *
 */
export declare function estimateSmartFee(params: EstimateSmartFeeParams): Promise<any>;
export {};