jup-ag / jupiter-core-example Goto Github PK

const { Connection, Keypair, VersionedTransaction } = require('@solana/web3.js');
const fetch = require('cross-fetch');
const bs58 = require('bs58');


const private_key = 'YOUR_PRIVATE_KEY';
const inputMint = 'So11111111111111111111111111111111111111112';
const outputMint = 'EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v';
const amount = 100000;
const slippageBps = 10;
const rpcEndpoint = 'https://api.mainnet-beta.solana.com';

//setup connection
const connection = new Connection(rpcEndpoint);

// Setup wallet
const secretKey = bs58.decode(private_key);
const wallet = Keypair.fromSecretKey(secretKey);

async function swap() {
    try {
        // Get quote
        const quoteResponse = await (
            await fetch(`https://quote-api.jup.ag/v6/quote?inputMint=${inputMint}&outputMint=${outputMint}&amount=${amount}&slippageBps=${slippageBps}`)
        ).json();

        // Get serialized transactions for the swap
        const { swapTransaction } = await (
                await fetch('https://quote-api.jup.ag/v6/swap', {
                method: 'POST',
                headers: {
                    'Content-Type': 'application/json'
                },
                body: JSON.stringify({
                    quoteResponse,
                    userPublicKey: wallet.publicKey.toString(),
                    wrapAndUnwrapSol: true,
                    dynamicComputeUnitLimit: true,
                    prioritizationFeeLamports: 'auto'
                })
            })
        ).json();

        // Deserialize and sign the transaction
        const swapTransactionBuf = Buffer.from(swapTransaction, 'base64');
        const transaction = VersionedTransaction.deserialize(swapTransactionBuf);
        transaction.sign([wallet]);

        // Execute the transaction
        const rawTransaction = transaction.serialize();
        const txid = await connection.sendRawTransaction(rawTransaction, {
            skipPreflight: true,
            maxRetries: 2
        });
        await connection.confirmTransaction(txid);

        console.log(`Swap successful! Transaction ID: ${txid}`);
        console.log(`View the transaction on Solscan: https://solscan.io/tx/${txid}`);
    } catch (error) {
        console.error('Error during swap:', error);
    }
}

// Run the swap function
swap();

➜  jupiter-core-example git:(main) ✗ yarn start
yarn run v1.22.5
$ npm run watch & nodemon --watch ./dist --exec 'node ./dist/main.js' --delay 1000ms
[nodemon] 2.0.15
[nodemon] to restart at any time, enter `rs`
[nodemon] watching path(s): dist/**/*
[nodemon] watching extensions: js,mjs,json
[nodemon] starting `node ./dist/main.js`
npm WARN lifecycle The node binary used for scripts is /var/folders/b_/695p375x3cd0tfxp0nzgyb9w0000gp/T/yarn--1641625841043-0.08431479813294107/node but npm is using /Users/necmttn/.nvm/versions/node/v14.17.6/bin/node itself. Use the `--scripts-prepend-node-path` option to include the path for the node binary npm was executed with.

> [email protected] watch /Users/necmttn/Projects/crypto/jupiter-core-example
> parcel watch

/Users/necmttn/Projects/crypto/jupiter-core-example/node_modules/@jup-ag/core/node_modules/@saberhq/stableswap-sdk/node_modules/@saberhq/token-utils/node_modules/@solana/buffer-layout/lib/Layout.js:999
            throw new TypeError('fields must be array of Layout instances');
            ^

TypeError: fields must be array of Layout instances
    at new Structure (/Users/necmttn/Projects/crypto/jupiter-core-example/node_modules/@jup-ag/core/node_modules/@saberhq/stableswap-sdk/node_modules/@saberhq/token-utils/node_modules/@solana/buffer-layout/lib/Layout.js:999:19)
    at Object.exports.struct (/Users/necmttn/Projects/crypto/jupiter-core-example/node_modules/@jup-ag/core/node_modules/@saberhq/stableswap-sdk/node_modules/@saberhq/token-utils/node_modules/@solana/buffer-layout/lib/Layout.js:2373:57)
    at structLayout (/Users/necmttn/Projects/crypto/jupiter-core-example/node_modules/@jup-ag/core/node_modules/@saberhq/stableswap-sdk/node_modules/@saberhq/token-utils/dist/cjs/layout.js:18:73)
    at Object.<anonymous> (/Users/necmttn/Projects/crypto/jupiter-core-example/node_modules/@jup-ag/core/node_modules/@saberhq/stableswap-sdk/dist/cjs/state/layout.js:23:59)
    at Module._compile (internal/modules/cjs/loader.js:1072:14)
    at Object.Module._extensions..js (internal/modules/cjs/loader.js:1101:10)
    at Module.load (internal/modules/cjs/loader.js:937:32)
    at Function.Module._load (internal/modules/cjs/loader.js:778:12)
    at Module.require (internal/modules/cjs/loader.js:961:19)
    at require (internal/modules/cjs/helpers.js:92:18)
[nodemon] app crashed - waiting for file changes before starting...

> Program log: Instruction: CreateOpenOrders
> Invoking System Program
  > Allocate: account Address { address: CQeJQmFyxTVvpEhpoeNMGuEzFs2od8hPrb3y5wHbCqC8, base: None } already in use
  > Program returned error: custom program error: 0x0
> Program [Jupiter Aggregator v3](https://solscan.io/address/JUP3c2Uh3WA4Ng34tw6kPd2G4C5BB21Xo36Je1s32Ph)  consumed 8440 of 1231817 compute units