@meteora-ag/dlmm v1.2.3

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.createMultiple(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 minBinId = activeBin.bin_id - TOTAL_RANGE_INTERVAL;
const maxBinId = activeBin.bin_id + TOTAL_RANGE_INTERVAL;

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

// Create Position (Spot Balance deposit, Please refer ``example.ts` for more example)
const createPositionTx =
  await dlmmPool.initializePositionAndAddLiquidityByStrategy({
    positionPubKey: newBalancePosition.publicKey,
    user: user.publicKey,
    totalXAmount,
    totalYAmount,
    strategy: {
      maxBinId,
      minBinId,
      strategyType: StrategyType.SpotBalanced,
    },
  });

try {
  const createBalancePositionTxHash = await sendAndConfirmTransaction(
    connection,
    createPositionTx,
    [user, newBalancePosition]
  );
} 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 TOTAL_RANGE_INTERVAL = 10; // 10 bins on each side of the active bin
const minBinId = activeBin.bin_id - TOTAL_RANGE_INTERVAL;
const maxBinId = activeBin.bin_id + TOTAL_RANGE_INTERVAL;

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

// Add Liquidity to existing position
const addLiquidityTx = await dlmmPool.addLiquidityByStrategy({
  positionPubKey: newBalancePosition.publicKey,
  user: user.publicKey,
  totalXAmount,
  totalYAmount,
  strategy: {
    maxBinId,
    minBinId,
    strategyType: StrategyType.SpotBalanced,
  },
});

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

• Remove Liquidity

const userPosition = userPositions.find(({ publicKey }) =>
  publicKey.equals(newBalancePosition.publicKey)
);
// Remove Liquidity
const binIdsToRemove = userPosition.positionData.positionBinData.map(
  (bin) => bin.binId
);
const removeLiquidityTx = await dlmmPool.removeLiquidity({
  position: userPosition.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 removeBalanceLiquidityTxHash = await sendAndConfirmTransaction(
      connection,
      tx,
      [user],
      { skipPreflight: false, preflightCommitment: "singleGossip" }
    );
  }
} 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