import { Buffer } from 'buffer';
/**
 * PSBT input fields for supported script types (P2TR, P2WPKH, P2WSH).
 */
export interface PsbtInputFields {
    witnessUtxo?: {
        script: Buffer;
        value: number;
    };
    witnessScript?: Buffer;
    tapInternalKey?: Buffer;
}
/**
 * UTXO information for PSBT construction.
 *
 * Only supports Taproot (P2TR) and native SegWit (P2WPKH, P2WSH) script types.
 */
export interface UtxoForPsbt {
    /** Transaction ID of the UTXO */
    txid: string;
    /** Output index (vout) of the UTXO */
    vout: number;
    /** Value of the UTXO in satoshis */
    value: number;
    /** ScriptPubKey of the UTXO (hex string) */
    scriptPubKey: string;
    /** Witness script (required for P2WSH) */
    witnessScript?: string;
}
/**
 * Get PSBT input fields for a given UTXO based on its script type.
 *
 * Only supports Taproot (P2TR) and native SegWit (P2WPKH, P2WSH) script types.
 *
 * @param utxo - The unspent transaction output to process
 * @param publicKeyNoCoord - The x-only public key (32 bytes) for Taproot signing
 * @returns PSBT input fields object containing the necessary data
 * @throws Error if required input data is missing or unsupported script type
 */
export declare function getPsbtInputFields(utxo: UtxoForPsbt, publicKeyNoCoord?: Buffer): PsbtInputFields;
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