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@kamino-finance/klend-sdk

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Typescript SDK for interacting with the Kamino Lending (klend) protocol

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/* eslint-disable @typescript-eslint/no-unused-vars */ import { Address, isSome, AccountMeta, AccountSignerMeta, Instruction, Option, TransactionSigner, } from "@solana/kit" /* eslint-enable @typescript-eslint/no-unused-vars */ import BN from "bn.js" // eslint-disable-line @typescript-eslint/no-unused-vars import * as borsh from "@coral-xyz/borsh" // eslint-disable-line @typescript-eslint/no-unused-vars import { borshAddress } from "../utils" // eslint-disable-line @typescript-eslint/no-unused-vars import * as types from "../types" // eslint-disable-line @typescript-eslint/no-unused-vars import { PROGRAM_ID } from "../programId" export const DISCRIMINATOR = Buffer.from([116, 174, 213, 76, 180, 53, 210, 144]) export interface RepayObligationLiquidityV2Args { liquidityAmount: BN } export interface RepayObligationLiquidityV2Accounts { repayAccounts: { owner: TransactionSigner obligation: Address lendingMarket: Address repayReserve: Address reserveLiquidityMint: Address reserveDestinationLiquidity: Address userSourceLiquidity: Address tokenProgram: Address instructionSysvarAccount: Address } farmsAccounts: { obligationFarmUserState: Option<Address> reserveFarmState: Option<Address> } lendingMarketAuthority: Address farmsProgram: Address } export const layout = borsh.struct<RepayObligationLiquidityV2Args>([ borsh.u64("liquidityAmount"), ]) export function repayObligationLiquidityV2( args: RepayObligationLiquidityV2Args, accounts: RepayObligationLiquidityV2Accounts, remainingAccounts: Array<AccountMeta | AccountSignerMeta> = [], programAddress: Address = PROGRAM_ID ) { const keys: Array<AccountMeta | AccountSignerMeta> = [ { address: accounts.repayAccounts.owner.address, role: 2, signer: accounts.repayAccounts.owner, }, { address: accounts.repayAccounts.obligation, role: 1 }, { address: accounts.repayAccounts.lendingMarket, role: 0 }, { address: accounts.repayAccounts.repayReserve, role: 1 }, { address: accounts.repayAccounts.reserveLiquidityMint, role: 0 }, { address: accounts.repayAccounts.reserveDestinationLiquidity, role: 1 }, { address: accounts.repayAccounts.userSourceLiquidity, role: 1 }, { address: accounts.repayAccounts.tokenProgram, role: 0 }, { address: accounts.repayAccounts.instructionSysvarAccount, role: 0 }, isSome(accounts.farmsAccounts.obligationFarmUserState) ? { address: accounts.farmsAccounts.obligationFarmUserState.value, role: 1, } : { address: programAddress, role: 0 }, isSome(accounts.farmsAccounts.reserveFarmState) ? { address: accounts.farmsAccounts.reserveFarmState.value, role: 1 } : { address: programAddress, role: 0 }, { address: accounts.lendingMarketAuthority, role: 0 }, { address: accounts.farmsProgram, role: 0 }, ...remainingAccounts, ] const buffer = Buffer.alloc(1000) const len = layout.encode( { liquidityAmount: args.liquidityAmount, }, buffer ) const data = Buffer.concat([DISCRIMINATOR, buffer]).slice(0, 8 + len) const ix: Instruction = { accounts: keys, programAddress, data } return ix }