import { TransactionInstruction, PublicKey } from '@solana/web3.js';
export interface SetRewardAuthorityArgs {
    rewardIndex: number;
}
export interface SetRewardAuthorityAccounts {
    whirlpool: PublicKey;
    rewardAuthority: PublicKey;
    newRewardAuthority: PublicKey;
}
export declare const layout: any;
export declare function setRewardAuthority(args: SetRewardAuthorityArgs, accounts: SetRewardAuthorityAccounts): TransactionInstruction;