import { BN, Program, web3 } from "@project-serum/anchor";
import { EuroMeta, OptionType } from "../types";
import { EuroPrimitive } from "../euro_primitive";
/**
 * Close options by burning a option and writer tokens. This instruction can be used
 * to retrieve the underlying from the option before or after expiration.
 *
 * @param program - Tokenized Euros anchor Program
 * @param euroMetaKey - address for the EuroMeta data structure
 * @param euroMeta - The deserialized EuroMeta data
 * @param collateralDestination - Where the underlying collateral of the option should be returned
 * @param optionSource - The TokenAccount that holds the option tokens
 * @param writerSource - The TokenAccount that holds the writer tokens
 * @param amount - The amount of options to close
 * @param optionType - Whether the option is a CALL or a PUT.
 * @returns
 */
export declare const closeOptionsInstruction: (program: Program<EuroPrimitive>, euroMetaKey: web3.PublicKey, euroMeta: EuroMeta, collateralDestination: web3.PublicKey, optionSource: web3.PublicKey, writerSource: web3.PublicKey, amount: BN, optionType: OptionType) => Promise<{
    instruction: web3.TransactionInstruction;
}>;
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