npm package discovery and stats viewer.

Discover Tips

  • General search

    [free text search, go nuts!]

  • Package details

    pkg:[package-name]

  • User packages

    @[username]

Sponsor

Optimize Toolset

I’ve always been into building performant and accessible sites, but lately I’ve been taking it extremely seriously. So much so that I’ve been building a tool to help me optimize and monitor the sites that I build to make sure that I’m making an attempt to offer the best experience to those who visit them. If you’re into performant, accessible and SEO friendly sites, you might like it too! You can check it out at Optimize Toolset.

About

Hi, 👋, I’m Ryan Hefner  and I built this site for me, and you! The goal of this site was to provide an easy way for me to check the stats on my npm packages, both for prioritizing issues and updates, and to give me a little kick in the pants to keep up on stuff.

As I was building it, I realized that I was actually using the tool to build the tool, and figured I might as well put this out there and hopefully others will find it to be a fast and useful way to search and browse npm packages as I have.

If you’re interested in other things I’m working on, follow me on Twitter or check out the open source projects I’ve been publishing on GitHub.

I am also working on a Twitter bot for this site to tweet the most popular, newest, random packages from npm. Please follow that account now and it will start sending out packages soon–ish.

Open Software & Tools

This site wouldn’t be possible without the immense generosity and tireless efforts from the people who make contributions to the world and share their work via open source initiatives. Thank you 🙏

© 2024 – Pkg Stats / Ryan Hefner

@jup-ag/lifinity-sdk-v2

v1.0.8

Published

## Installation ```bash yarn install @lifinity/sdk-v2 ```

Downloads

2,644

Readme

lifinity-sdk-v2

Installation

yarn install @lifinity/sdk-v2

Usage

  • Get pools
import { getPoolList } from '@lifinity/sdk-v2';

const pools = getPoolList();

console.log("pools =", pools);
  • Get swap amount
import { Connection, PublicKey } from '@solana/web3.js';
import { getAmountOut, AmountOut } from '@lifinity/sdk-v2';

const connection: Connection = new Connection("https://api.mainnet-beta.solana.com");
const amountIn: number = 1; // Input amount
const fromMint: PublicKey = new PublicKey("---Mint address of the input token---");
const toMint: PublicKey = new PublicKey("---Mint address of the output token---");
const slippage: number = 1; // Slippage (%)

const res : AmountOut = await getAmountOut(
    connection,
    amountIn,
    fromMint,
    toMint,
    slippage
);

console.log("amountIn: number =", res.amountIn);
console.log("amountOut: number =", res.amountOut);
console.log("amountOutWithSlippage: number =", res.amountOutWithSlippage);
console.log("priceImpact: number =", res.priceImpact);
console.log("fee: number =", res.fee);
console.log("feePercent: number =", res.feePercent);
  • Breakdown of get swap amount Please use the SDK for calculating amount out (getCurveAmount) as the protocol is still in beta and the math may be updated
import { Connection, PublicKey } from '@solana/web3.js';
import Decimal from 'decimal'
import { getPool, getMultipleAccounts, getParsedData, getCurveAmount, TradeDirection } from '@lifinity/sdk-v2'


const connection: Connection = new Connection("https://api.mainnet-beta.solana.com");
const amountIn: number = 1; // Input amount
const fromMint: PublicKey = new PublicKey("---Mint address of the intput token---");
const toMint: PublicKey = new PublicKey("---Mint address of the output token---");
const slippage: number = 1; // Slippage (%)

const poolInfo = getPool(fromMint.toString(), toMint.toString());
if (poolInfo) {

    let amount = new Decimal(amountIn);
    let tradeDirection: string;
    let inDecimal: number;
    let outDecimal: number;

    if (poolInfo.poolCoinMint === fromMint.toString()){
        amount = amount.times(new Decimal(10).pow(poolInfo.poolCoinDecimal));
        inDecimal = poolInfo.poolCoinDecimal;
        outDecimal = poolInfo.poolPcDecimal;
        tradeDirection = TradeDirection.AtoB;
    }else{
        amount = amount.times(new Decimal(10).pow(poolInfo.poolPcDecimal));
        inDecimal = poolInfo.poolPcDecimal;
        outDecimal = poolInfo.poolCoinDecimal
        tradeDirection = TradeDirection.BtoA;
    }

    const publicKeys = [
        new PublicKey(poolInfo.amm),
        new PublicKey(poolInfo.poolCoinTokenAccount),
        new PublicKey(poolInfo.poolPcTokenAccount),
    ];

    if (poolInfo.oracleMainAccount !== poolInfo.oracleSubAccount){
        publicKeys.push(new PublicKey(poolInfo.oracleMainAccount));
        publicKeys.push(new PublicKey(poolInfo.oracleSubAccount));
    }else{
        publicKeys.push(new PublicKey(poolInfo.oracleMainAccount));
    }

    if (poolInfo.oracleSubAccount !== poolInfo.oraclePcAccount){
        publicKeys.push(new PublicKey(poolInfo.oraclePcAccount));
    }

    try {
        const multipleInfo = await getMultipleAccounts(connection, publicKeys);

        const data: IAmmData = getParsedData(
            multipleInfo,
            poolInfo
        );

        const slot = await connection.getSlot();

        const curveAmount: ICurveAmount = getCurveAmount(
            amount,
            slot,
            data.amm,
            data.fees,
            data.coinBalance,
            data.pcBalance,
            data.config,
            data.oracleMain,
            data.oracleSub,
            data.oraclePc,
            tradeDirection,
        );
        console.log("amountSwapped: Decimal =", curveAmount.amountSwapped);
        console.log("priceImpact: Decimal =", curveAmount.priceImpact);
        console.log("fee: Decimal =", curveAmount.fee);
        console.log("feePercent: Decimal =", curveAmount.feePercent);

        const slippagePercent = new Decimal(slippage).div(100);
        const amountOutWithSlippage = new Decimal(Math.floor(curveAmount.amountSwapped.times(new Decimal(1).minus(slippagePercent)).toNumber()));
        const amountOutWithSlippageTokenAmount = amountOutWithSlippage.div(new Decimal(10).pow(outDecimal)).toNumber();
        const amountOutTokenAmount = curveAmount.amountSwapped.div(new Decimal(10).pow(outDecimal)).toNumber();
        const feeTokenAmount = curveAmount.fee.div(new Decimal(10).pow(inDecimal)).toNumber();

        console.log("slippagePercent: Decimal =", slippagePercent);
        console.log("amountOutWithSlippage: Decimal =", amountOutWithSlippage);
        console.log("amountOutWithSlippageTokenAmount: Decimal =", amountOutWithSlippageTokenAmount);
        console.log("amountOutTokenAmount: Decimal =", amountOutTokenAmount);
        console.log("feeTokenAmount: Decimal =", feeTokenAmount);

    }catch (error) {
        console.log(error)
        // Errors include failures to obtain accurate price feed from the oracle
    }
}
  • Get swap instruction
import { Connection, PublicKey } from '@solana/web3.js';
import { getSwapInstruction } from '@lifinity/sdk-v2'

const connection: Connection = new Connection("https://api.mainnet-beta.solana.com");
const ownerAccount: PublicKey = new PublicKey("---User's Solana address---")
const amountIn: number = 1; // Input amount
const minimumOut: number = 100; // Output amount
const fromMint: PublicKey = new PublicKey("---Mint address of the input token---");
const toMint: PublicKey = new PublicKey("---Mint address of the output token---");
const fromUserAccount: PublicKey = new PublicKey("---User's input token account---");
const toUserAccount: PublicKey = new PublicKey("---User's output token account---");
const approve = true; // Set false to skip approve instruction

const { approveInstruction, swapInstruction, signers } = await getSwapInstruction(
    connection,
    ownerAccount,
    amountIn, 
    minimumOut,
    fromMint,
    toMint,
    fromUserAccount,
    toUserAccount,
    approve,
);

console.log("approveInstruction: TransactionInstruction =", approveInstruction);
console.log("swapInstruction: TransactionInstruction =", swapInstruction);
console.log("signers: any[] =", signers);
  • Swap
import { Lifinity } from '@lifinity/sdk-v2'

const connection: Connection = new Connection("https://api.mainnet-beta.solana.com");
const wallet: any = "---User wallet---"
const amountIn: number = 1; // Input amount
const minimumOut: number = 100; // Output amount
const fromMint: PublicKey = new PublicKey("---Mint address of the input token---");
const toMint: PublicKey = new PublicKey("---Mint address of the output token---");

const lifinitySdk = await Lifinity.build(
    connection,
    wallet
);

const transactionId: string = await lifinitySdk.swap(
    amountIn,
    minimumOut,
    fromMint,
    toMint
);

console.log("transactionId: string =",transactionId)
  • Deposit
import { Lifinity } from '@lifinity/sdk-v2'

const connection: Connection = new Connection("https://api.mainnet-beta.solana.com");
const wallet: any = "---User wallet---"

const coinAmountIn: number = 1; // input coin token amount
const pcAmountIn: number = 0; 
const coinMint: PublicKey = new PublicKey("---Mint address of the pool coin token---");
const pcMint: PublicKey = new PublicKey("---Mint address of the pool pc token---");
const slippage: number = 1; // Slippage (%)

// If pcAmountIn = 0, calculate pcAmountIn from coinAmountIn
const depositAmount : IDepositAmountOut = await getDepositAmountOut(
  connection,
  coinAmountIn,
  pcAmountIn,
  coinMint,
  pcMint,
  slippage
);

const lifinitySdk = await Lifinity.build(
    connection,
    wallet
);

const transactionId: string = await lifinitySdk.deposit(
    depositAmount.coinMaximumIn,
    depositAmount.pcMaximumIn,
    depositAmount.lpRecive,
    coinMint,
    pcMint,
);

console.log("transactionId: string =",transactionId)

If you only want to get the deposit instruction, use getDepositInstruction ().

  • Withdraw
import { Lifinity } from '@lifinity/sdk-v2'

const connection: Connection = new Connection("https://api.mainnet-beta.solana.com");
const wallet: any = "---User wallet---"

const lpAmountIn: number = 1; // input lp token amount
const coinMint: PublicKey = new PublicKey("---Mint address of the pool coin token---");
const pcMint: PublicKey = new PublicKey("---Mint address of the pool pc token---");
const slippage: number = 1; // Slippage (%)

const withdrawAmount : IWithdrawAmountOut = await getWithdrawAmountOut(
  connection,
  lpAmountIn,
  coinMint,
  pcMint,
  slippage
);

const lifinitySdk = await Lifinity.build(
    connection,
    wallet
);

const transactionId: string = await lifinitySdk.withdraw(
    withdrawAmount.lpAmountIn,
    withdrawAmount.coinMinimumOut,
    withdrawAmount.pcMinimumOut,
    coinMint,
    pcMint,
);

console.log("transactionId: string =",transactionId)

If you only want to get the withdraw instruction, use getWithdrawInstruction ().

Copyright © 2022 LIFINITY FOUNDATION All Rights Reserved.