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@exodus/project-serum-serum

v0.13.64-exodus.0

Published

Library for interacting with the serum dex

Downloads

6,789

Readme

npm (scoped) Build Status

Serum JS Client Library

JavaScript client library for interacting with the Project Serum DEX.

Installation

Using npm:

npm install @solana/web3.js @project-serum/serum

Using yarn:

yarn add @solana/web3.js @project-serum/serum

Usage

import { Account, Connection, PublicKey } from '@solana/web3.js';
import { Market } from '@project-serum/serum';

let connection = new Connection('https://testnet.solana.com');
let marketAddress = new PublicKey('...');
let programAddress = new PublicKey("...");
let market = await Market.load(connection, marketAddress, {}, programAddress);

// Fetching orderbooks
let bids = await market.loadBids(connection);
let asks = await market.loadAsks(connection);
// L2 orderbook data
for (let [price, size] of bids.getL2(20)) {
  console.log(price, size);
}
// Full orderbook data
for (let order of asks) {
  console.log(
    order.orderId,
    order.price,
    order.size,
    order.side, // 'buy' or 'sell'
  );
}

// Placing orders
let owner = new Account('...');
let payer = new PublicKey('...'); // spl-token account
await market.placeOrder(connection, {
  owner,
  payer,
  side: 'buy', // 'buy' or 'sell'
  price: 123.45,
  size: 17.0,
  orderType: 'limit', // 'limit', 'ioc', 'postOnly'
});

// Retrieving open orders by owner
let myOrders = await market.loadOrdersForOwner(connection, owner.publicKey);

// Cancelling orders
for (let order of myOrders) {
  await market.cancelOrder(connection, owner, order);
}

// Retrieving fills
for (let fill of await market.loadFills(connection)) {
  console.log(fill.orderId, fill.price, fill.size, fill.side);
}

// Settle funds
for (let openOrders of await market.findOpenOrdersAccountsForOwner(
  connection,
  owner.publicKey,
)) {
  if (openOrders.baseTokenFree > 0 || openOrders.quoteTokenFree > 0) {
    // spl-token accounts to which to send the proceeds from trades
    let baseTokenAccount = new PublicKey('...');
    let quoteTokenAccount = new PublicKey('...');

    await market.settleFunds(
      connection,
      owner,
      openOrders,
      baseTokenAccount,
      quoteTokenAccount,
    );
  }
}