Comparaison des frais

net input to pool   = amount_in × (1 − transfer_fee_in)
pool charges swap   = net × swap_fee_rate
net output to user  = out × (1 − transfer_fee_out)

amount_in        = 1000
net_to_pool      = 1000 × 0.99    = 990
pool swap fee    = 990 × 0.0025   = 2.475 (kept as LP fee)
amount_after_fee = 987.525
amount_out (AMM) = 987.525 × ratio, say 987.525 × 0.98 = 967.77
net_out_to_user  = 967.77 × 0.995 = 962.94

// The helper lives on the API client, not on the cpmm module.
const configs = await raydium.api.getCpmmConfigs();   // getClmmConfigs() for CLMM
console.log(configs[0]);
// Mainnet AmmConfig index 0, read 2026-09-09
// (D4FPEruKEHrG5TenZ2mpDGEfu1iUvTiqBxvpU8HLBvC2):
// {
//   id: "D4FPEruKEHrG5TenZ2mpDGEfu1iUvTiqBxvpU8HLBvC2",
//   tradeFeeRate:    2500,      //   2500 / 1_000_000 = 0.25% of volume
//   protocolFeeRate: 120000,    // 120000 / 1_000_000 = 12% OF THE TRADE FEE
//   fundFeeRate:     40000,     //  40000 / 1_000_000 =  4% of the trade fee
//   creatorFeeRate:  500,       //    500 / 1_000_000 = 0.05% of volume (opt-in)
//   createPoolFee:   "150000000",  // 0.15 SOL
//   protocolOwner:   "ProCXqRcXJjoUd1RNoo28bSizAA6EEqt9wURZYPDc5u",
//   fundOwner:       "FUNDduJTA7XcckKHKfAoEnnhuSud2JUCUZv6opWEjrBU",
//   ...
// }

// The fee numerators live on `poolRpcData` (the decoded AmmInfo), not on `poolInfo`,
// and they are named tradeFee*/swapFee*.
const { poolRpcData } = await raydium.liquidity.getPoolInfoFromRpc({ poolId: POOL_ID });
console.log(
  poolRpcData.tradeFeeNumerator.toString(),
  poolRpcData.tradeFeeDenominator.toString(),
);
// 25, 10000 → 0.25%

// Farm metadata comes from the API client, not the farm module — there is no
// raydium.farm.getFarmInfoFromRpc.
const farm = (await raydium.api.fetchFarmInfoById({ ids: farmId }))[0];
console.log(farm.rewardInfos);
// Per-reward: emissions rate, open/end time, reward mint