import { Program } from "@project-serum/anchor";
import { Whirlpool } from "../artifacts/whirlpool";
import { Instruction } from "@orca-so/common-sdk";
import { PublicKey } from "@solana/web3.js";
/**
 * Parameters to update the reward authority at a particular rewardIndex on a Whirlpool.
 *
 * @category Instruction Types
 * @param whirlpool - PublicKey for the whirlpool to update.
 * @param rewardIndex - The reward index that we'd like to update. (0 <= index <= NUM_REWARDS).
 * @param rewardAuthority - The current rewardAuthority in the Whirlpool at the rewardIndex
 * @param newRewardAuthority - The new rewardAuthority in the Whirlpool at the rewardIndex
 */
export declare type SetRewardAuthorityParams = {
    whirlpool: PublicKey;
    rewardIndex: number;
    rewardAuthority: PublicKey;
    newRewardAuthority: PublicKey;
};
/**
 * Set the whirlpool reward authority at the provided `reward_index`.
 * Only the current reward authority for this reward index has permission to invoke this instruction.
 *
 * #### Special Errors
 * - `InvalidRewardIndex` - If the provided reward index doesn't match the lowest uninitialized index in this pool,
 *                          or exceeds NUM_REWARDS.
 *
 * @category Instructions
 * @param context - Context object containing services required to generate the instruction
 * @param params - SetRewardAuthorityParams object
 * @returns - Instruction to perform the action.
 */
export declare function setRewardAuthorityIx(program: Program<Whirlpool>, params: SetRewardAuthorityParams): Instruction;