import * as anchor from "@project-serum/anchor";
/**
 * Close the put option buyer position.
 * @param provider Anchor provider
 * @param assetNftMint Asset NFT which underlies the option
 * @param buyerPositionNftMint Position NFT representing option buyer position
 * @param assetNftTokenAccount Token account containing the asset NFT
 * @returns Promise resolving to the transaction signature
 */
export declare const closePutOptionBuyer: (provider: anchor.AnchorProvider, assetNftMint: anchor.web3.PublicKey, buyerPositionNftMint: anchor.web3.PublicKey, assetNftTokenAccount?: anchor.web3.PublicKey) => Promise<string>;