/**
 * Shared utilities for UTXO-family connectors (UtxoConnector, BchConnector).
 *
 * These functions are extracted to avoid code duplication between connectors
 * that share identical logic for private key extraction.
 * @internal
 */
import type { Wallet } from '../../Wallet/Wallet';
/**
 * Creates a function that extracts the private key from the wallet.
 * @internal
 */
export declare function createPrivateKeyGetter(wallet: Wallet, index: number, derivationPath: string): () => Promise<Uint8Array>;