import { Transaction, UTXO, FeeEstimate } from '../types/transaction';
export declare class TransactionBuilder {
    private version;
    private inputs;
    private outputs;
    private locktime;
    setVersion(v: number): this;
    setLocktime(lt: number): this;
    addInput(txidHex: string, vout: number, sequence?: number): this;
    addInputFromUTXO(utxo: UTXO, sequence?: number): this;
    addOutput(scriptPubKey: Uint8Array, value: bigint): this;
    addOutputToAddress(address: string, valueSatoshis: bigint): this;
    addOutputToAddressBitok(address: string, valueBitok: string | bigint): this;
    addOpReturnOutput(data: Uint8Array | string): this;
    addOpReturnText(text: string): this;
    addCustomOutput(scriptHex: string, valueSatoshis: bigint): this;
    build(): Transaction;
    toHex(): string;
    estimateSize(): number;
    estimateFee(utxos: UTXO[], blockHeight: number): FeeEstimate;
    clone(): TransactionBuilder;
    static fromHex(hex: string): TransactionBuilder;
}
export declare function satoshisToBitok(satoshis: bigint): number;
export declare function bitokToSatoshis(bitok: string | number): bigint;
export declare function isDust(valueSatoshis: bigint): boolean;
export declare function selectUTXOs(utxos: UTXO[], targetSatoshis: bigint, feeSatoshis?: bigint): UTXO[];
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