import { Keypair, PublicKey } from "@solana/web3.js";
import { Program } from "@project-serum/anchor";
import { Whirlpool } from "../artifacts/whirlpool";
import { Instruction } from "@orca-so/common-sdk";
/**
 * Parameters to initialize a rewards for a Whirlpool
 *
 * @category Instruction Types
 * @param whirlpool - PublicKey for the whirlpool config space that the fee-tier will be initialized for.
 * @param rewardIndex - The reward index that we'd like to initialize. (0 <= index <= NUM_REWARDS).
 * @param rewardMint - PublicKey for the reward mint that we'd use for the reward index.
 * @param rewardVaultKeypair - Keypair of the vault for this reward index.
 * @param rewardAuthority - Assigned authority by the reward_super_authority for the specified reward-index in this Whirlpool
 * @param funder - The account that would fund the creation of this account
 */
export declare type InitializeRewardParams = {
    whirlpool: PublicKey;
    rewardIndex: number;
    rewardMint: PublicKey;
    rewardVaultKeypair: Keypair;
    rewardAuthority: PublicKey;
    funder: PublicKey;
};
/**
 * Initialize reward for a Whirlpool. A pool can only support up to a set number of rewards.
 * The initial emissionsPerSecond is set to 0.
 *
 * #### Special Errors
 * - `InvalidRewardIndex` - If the provided reward index doesn't match the lowest uninitialized index in this pool,
 *                          or exceeds NUM_REWARDS, or all reward slots for this pool has been initialized.
 *
 * @category Instructions
 * @param context - Context object containing services required to generate the instruction
 * @param params - InitializeRewardParams object
 * @returns - Instruction to perform the action.
 */
export declare function initializeRewardIx(program: Program<Whirlpool>, params: InitializeRewardParams): Instruction;