Desplegar un pool CPMM

import { Connection, Keypair, PublicKey } from "@solana/web3.js";
import {
  Raydium,
  TxVersion,
  CREATE_CPMM_POOL_PROGRAM,
  CREATE_CPMM_POOL_FEE_ACC,
} from "@raydium-io/raydium-sdk-v2";
import BN from "bn.js";
import fs from "node:fs";

// ── Config from env ──────────────────────────────────────────────
const RPC_URL  = process.env.RPC_URL  ?? "https://api.mainnet-beta.solana.com";
const KEYPAIR  = process.env.KEYPAIR  ?? `${process.env.HOME}/.config/solana/id.json`;
const MINT_A   = process.env.MINT_A;   // required, base58
const MINT_B   = process.env.MINT_B;   // required, base58
const AMOUNT_A = process.env.AMOUNT_A; // required, integer raw units
const AMOUNT_B = process.env.AMOUNT_B; // required, integer raw units

if (!MINT_A || !MINT_B || !AMOUNT_A || !AMOUNT_B) {
  console.error("Set MINT_A, MINT_B, AMOUNT_A, AMOUNT_B env vars.");
  process.exit(1);
}

// ── Setup ────────────────────────────────────────────────────────
const connection = new Connection(RPC_URL, "confirmed");
const owner = Keypair.fromSecretKey(
  new Uint8Array(JSON.parse(fs.readFileSync(KEYPAIR, "utf8"))),
);
const raydium = await Raydium.load({
  owner,
  connection,
  cluster: "mainnet",
  disableFeatureCheck: true,
  blockhashCommitment: "finalized",
});

// ── Pick the 0.25% fee tier ─────────────────────────────────────
const feeConfigs = await raydium.api.getCpmmConfigs();
const feeConfig  = feeConfigs.find((c) => c.index === 0);
if (!feeConfig) throw new Error("0.25% fee tier not found in CPMM configs.");

// ── Resolve mint metadata (Token-2022-aware) ────────────────────
const mintA = await raydium.token.getTokenInfo(new PublicKey(MINT_A));
const mintB = await raydium.token.getTokenInfo(new PublicKey(MINT_B));

// ── Build and execute ───────────────────────────────────────────
const { execute, extInfo } = await raydium.cpmm.createPool({
  programId:       CREATE_CPMM_POOL_PROGRAM,
  poolFeeAccount:  CREATE_CPMM_POOL_FEE_ACC,
  mintA,
  mintB,
  mintAAmount:     new BN(AMOUNT_A),
  mintBAmount:     new BN(AMOUNT_B),
  startTime:       new BN(0), // open immediately
  feeConfig,
  associatedOnly:  false,
  ownerInfo:       { useSOLBalance: true },
  txVersion:       TxVersion.V0,
  computeBudgetConfig: {
    units: 600_000,
    microLamports: 100_000,
  },
});

const { txId } = await execute({ sendAndConfirm: true });

console.log(`Pool ID:  ${extInfo.address.poolId.toBase58()}`);
console.log(`LP mint:  ${extInfo.address.lpMint.toBase58()}`);
console.log(`Vault A:  ${extInfo.address.vaultA.toBase58()}`);
console.log(`Vault B:  ${extInfo.address.vaultB.toBase58()}`);
console.log(`Tx:       https://solscan.io/tx/${txId}`);