import { Contextual } from '../types/context.js';
import { ByteString, Int32 } from '../types/index.js';
import { OpcatState } from '../types/primitives.js';
import { AbstractContract } from '../abstractContract.js';
/**
 * @ignore
 * Builds a change output for a PSBT (Partially Signed Bitcoin Transaction).
 *
 * @param psbt - The contextual PSBT containing change information.
 * @returns The serialized change output as a ByteString. Returns empty ByteString if no change script exists.
 */
export declare function buildChangeOutputImpl(psbt: Contextual): ByteString;
/**
 * @ignore
 * Builds a state output for an OP_CAT enabled smart contract.
 *
 * @param self - The contract instance
 * @param state - The contract state to serialize
 * @param satoshis - The amount in satoshis for the output
 * @param script - The locking script for the output
 * @returns The built output as ByteString
 * @throws Throws if script is empty
 */
export declare function buildStateOutputImpl<T extends OpcatState>(self: AbstractContract, state: T, satoshis: Int32, scriptHash: ByteString): ByteString;
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