@jaydenpung/dlmm v1.0.7

DLMM SDK

Getting started

NPM: https://www.npmjs.com/package/@meteora-ag/dlmm

SDK: https://github.com/MeteoraAg/dlmm-sdk

Discord: https://discord.com/channels/841152225564950528/864859354335412224

Install

1. Install deps

npm i @meteora-ag/dlmm @coral-xyz/anchor @solana/web3.js

2. Initialize DLMM instance

import DLMM from '@meteora-ag/dlmm'

const USDC_USDT_POOL = new PublicKey('ARwi1S4DaiTG5DX7S4M4ZsrXqpMD1MrTmbu9ue2tpmEq') // You can get your desired pool address from the API https://dlmm-api.meteora.ag/pair/all
const dlmmPool = await DLMM.create(connection, USDC_USDT_POOL);

// If you need to create multiple, can consider using `createMultiple`
const dlmmPool = await DLMM.create(connection, [USDC_USDT_POOL, ...]);

3. To interact with the AmmImpl

• Get Active Bin

const activeBin = await dlmmPool.getActiveBin();
const activeBinPriceLamport = activeBin.price;
const activeBinPricePerToken = dlmmPool.fromPricePerLamport(
  Number(activeBin.price)
);

• Create Position

const TOTAL_RANGE_INTERVAL = 10; // 10 bins on each side of the active bin
const bins = [activeBin.binId]; // Make sure bins is less than 70, as currently only support up to 70 bins for 1 position
for (
  let i = activeBin.binId;
  i < activeBin.binId + TOTAL_RANGE_INTERVAL / 2;
  i++
) {
  const rightNextBinId = i + 1;
  const leftPrevBinId = activeBin.binId - (rightNextBinId - activeBin.binId);
  bins.push(rightNextBinId);
  bins.unshift(leftPrevBinId);
}

const activeBinPricePerToken = dlmmPool.fromPricePerLamport(
  Number(activeBin.price)
);
const totalXAmount = new BN(100);
const totalYAmount = totalXAmount.mul(new BN(Number(activeBinPricePerToken)));

// Get spot distribution (You can calculate with other strategy `calculateSpotDistribution`, `calculateNormalDistribution`)
const spotXYAmountDistribution = calculateSpotDistribution(
  activeBin.binId,
  bins
);
const newPosition = new Keypair();
const createPositionTx =
  await dlmmPool.initializePositionAndAddLiquidityByWeight({
    positionPubKey: newPosition.publicKey,
    lbPairPubKey: dlmmPool.pubkey,
    user: user.publicKey,
    totalXAmount,
    totalYAmount,
    xYAmountDistribution: spotXYAmountDistribution,
  });

try {
  for (let tx of Array.isArray(createPositionTx)
    ? createPositionTx
    : [createPositionTx]) {
    const createPositionTxHash = await sendAndConfirmTransaction(
      connection,
      tx,
      [user, newPosition]
    );
  }
} catch (error) {}

• Get list of positions

const { userPositions } = await dlmmPool.getPositionsByUserAndLbPair(
  user.publicKey
);
const binData = userPositions[0].positionData.positionBinData;

• Add liquidity to existing position

const addLiquidityTx = await dlmmPool.addLiquidityByWeight({
  positionPubKey: userPositions[0].publicKey,
  lbPairPubKey: dlmmPool.pubkey,
  user: user.publicKey,
  totalXAmount,
  totalYAmount,
  xYAmountDistribution: spotXYAmountDistribution,
});

try {
  for (let tx of Array.isArray(addLiquidityTx)
    ? addLiquidityTx
    : [addLiquidityTx]) {
    const addLiquidityTxHash = await sendAndConfirmTransaction(connection, tx, [
      user,
      newPosition,
    ]);
  }
} catch (error) {}

• Remove Liquidity

const binIdsToRemove = userPositions[0].positionData.positionBinData.map(
  (bin) => bin.binId
);
const removeLiquidityTx = await dlmmPool.removeLiquidity({
  position: userPositions[0].publicKey,
  user: user.publicKey,
  binIds: binIdsToRemove,
  liquiditiesBpsToRemove: new Array(binIdsToRemove.length).fill(
    new BN(100 * 100)
  ), // 100% (range from 0 to 100)
  shouldClaimAndClose: true, // should claim swap fee and close position together
});

try {
  for (let tx of Array.isArray(removeLiquidityTx)
    ? removeLiquidityTx
    : [removeLiquidityTx]) {
    const removeLiquidityTxHash = await sendAndConfirmTransaction(
      connection,
      tx,
      [user, newPosition]
    );
  }
} catch (error) {}

• Swap

const swapAmount = new BN(100);
// Swap quote
const swapYtoX = true;
const binArrays = await dlmmPool.getBinArrayForSwap(swapYtoX);
const swapQuote = await dlmmPool.swapQuote(
  swapAmount,
  swapYtoX,
  new BN(10),
  binArrays
);

// Swap
const swapTx = await dlmmPool.swap({
  inToken: dlmmPool.tokenX.publicKey,
  binArraysPubkey: swapQuote.binArraysPubkey,
  inAmount: swapAmount,
  lbPair: dlmmPool.pubkey,
  user: user.publicKey,
  minOutAmount: swapQuote.minOutAmount,
  outToken: dlmmPool.tokenY.publicKey,
});

try {
  const swapTxHash = await sendAndConfirmTransaction(connection, swapTx, [
    user,
  ]);
} catch (error) {}

Static functions

DLMM instance functions