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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([247, 121, 40, 99, 35, 82, 100, 32]) export interface GetSwapAmountAndFeesArgs { params: types.GetSwapAmountAndFeesParamsFields } export interface GetSwapAmountAndFeesAccounts { perpetuals: Address pool: Address receivingCustody: Address receivingCustodyOracleAccount: Address dispensingCustody: Address dispensingCustodyOracleAccount: Address } export const layout = borsh.struct<GetSwapAmountAndFeesArgs>([ types.GetSwapAmountAndFeesParams.layout("params"), ]) export function getSwapAmountAndFees( args: GetSwapAmountAndFeesArgs, accounts: GetSwapAmountAndFeesAccounts, remainingAccounts: Array<AccountMeta | AccountSignerMeta> = [], programAddress: Address = PROGRAM_ID ) { const keys: Array<AccountMeta | AccountSignerMeta> = [ { address: accounts.perpetuals, role: 0 }, { address: accounts.pool, role: 0 }, { address: accounts.receivingCustody, role: 0 }, { address: accounts.receivingCustodyOracleAccount, role: 0 }, { address: accounts.dispensingCustody, role: 0 }, { address: accounts.dispensingCustodyOracleAccount, role: 0 }, ...remainingAccounts, ] const buffer = Buffer.alloc(1000) const len = layout.encode( { params: types.GetSwapAmountAndFeesParams.toEncodable(args.params), }, buffer ) const data = Buffer.concat([DISCRIMINATOR, buffer]).slice(0, 8 + len) const ix: Instruction = { accounts: keys, programAddress, data } return ix }