Borrow & Lend

import { createSolanaRpc, address, createNoopSigner } from '@solana/kit';
import { KaminoMarket, KaminoAction, LendingObligation } from '@kamino-finance/klend-sdk';
import { simulateTx } from '../../utils/tx';
import BN from 'bn.js';

const rpc = createSolanaRpc('https://api.mainnet-beta.solana.com');
const marketPubkey = address('DxXdAyU3kCjnyggvHmY5nAwg5cRbbmdyX3npfDMjjMek');
const usdcMint = address('EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v');

const market = await KaminoMarket.load(rpc, marketPubkey, 100);
const user = address('EZC9wzVCvihCsCHEMGADYdsRhcpdRYWzSCZAVegSCfqY'); // user

// Create a LendingObligation for depositing to earn interest
const obligation = new LendingObligation(usdcMint, market!.programId, 0);

const action = await KaminoAction.buildDepositReserveLiquidityTxns(
  market!,
  new BN(1_000_000), // Deposit 1 USDC * 10^6 decimals
  usdcMint,
  createNoopSigner(user),
  obligation,
  undefined
);

const res = await simulateTx(rpc, user, [
  ...action.computeBudgetIxs,
  ...action.setupIxs,
  ...action.lendingIxs,
  ...action.cleanupIxs,
], []);

console.log('Simulation Result:', res);

import { createSolanaRpc, address, createNoopSigner } from '@solana/kit';
import { KaminoMarket, KaminoAction, VanillaObligation, PROGRAM_ID } from '@kamino-finance/klend-sdk';
import { simulateTx } from '../../utils/tx';
import BN from 'bn.js';

const rpc = createSolanaRpc('https://api.mainnet-beta.solana.com');
const marketPubkey = address('DxXdAyU3kCjnyggvHmY5nAwg5cRbbmdyX3npfDMjjMek');
const usdcMint = address('EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v');

const market = await KaminoMarket.load(rpc, marketPubkey, 100);
const user = address('EZC9wzVCvihCsCHEMGADYdsRhcpdRYWzSCZAVegSCfqY');

// Fetch the existing obligation from the blockchain
const obligation = await market!.getObligationByWallet(
  user,
  new VanillaObligation(PROGRAM_ID)
);

if (!obligation) {
  throw new Error('No obligation found for this wallet. You must deposit first.');
}

const action = await KaminoAction.buildWithdrawTxns(
  market!,
  new BN(1_000_000), // Withdraw 1 USDC * 10^6 decimals
  usdcMint,
  createNoopSigner(user),
  obligation,
  true, // useV2Ixs
  undefined // scopeRefreshConfig
);

const res = await simulateTx(rpc, user, [
  ...action.computeBudgetIxs,
  ...action.setupIxs,
  ...action.lendingIxs,
  ...action.cleanupIxs,
], []);

console.log('Simulation Result:', res);