React Example

import { OrderType, OstiumClient } from '@ostium/builder-sdk';

const client = await OstiumClient.createSelfAndSelf({
  traderAddress: '0xTraderAddress',
  builder: {
    address: '0xYourBuilderAddress',
    feeBps: 20,
  },
});

const tx = client.getOpenTradeTx({
  pairId: 0,
  buy: true,
  price: '65000',
  collateral: '100',
  leverage: '5',
  type: OrderType.Market,
});

await window.ethereum.request({
  method: 'eth_sendTransaction',
  params: [
    {
      from: tx.from,
      to: tx.to,
      data: tx.data,
      value: `0x${tx.value.toString(16)}`,
    },
  ],
});

const positions = await client.getOpenPositions({ user: '0xTraderAddress' });
const stream = client.streamPositionUpdates(positions);

stream.onUpdate(next => {
  renderMarginSummary(next.marginSummary);
  renderPositions(next.pairPositions);
});

stream.onError(error => {
  console.error('position stream error', error);
});

async function pollTrade(txHash: `0x${string}`) {
  while (true) {
    const orders = await client.getOrders({ initiatedTxHashes: [txHash] });
    const order = orders[0];

    if (order && !order.isPending) {
      return order;
    }

    await new Promise(resolve => setTimeout(resolve, 2000));
  }
}