/// <reference types="@scrypt-inc/bsv" />
/// <reference types="scrypt-ts/dist/smart-contract/bsv/privatekey" />
/// <reference types="scrypt-ts/dist/smart-contract/bsv/publickey" />
/// <reference types="scrypt-ts/dist/smart-contract/bsv/address" />
import { UTXO } from "scrypt-ts";
import { EcKeyService } from "../utils";
export declare function mergeFee(ecKey: EcKeyService, feeUtxos: UTXO[], feeRate: number): {
    mergeTx: any;
    feeUtxo: import("@scrypt-inc/bsv").Transaction.IUnspentOutput;
};