The ixWrapperBuyYt method on the MarketThree class converts base assets into YT (Yield Tokens) by wrapping the base into SY, stripping SY into PT and YT, and swapping the PT back for SY in a single atomic operation.
Usage
import { MarketThree, LOCAL_ENV } from "@exponent-labs/exponent-sdk";
import { Connection, PublicKey, Transaction, sendAndConfirmTransaction } from "@solana/web3.js";
const connection = new Connection("https://api.mainnet-beta.solana.com");
const market = await MarketThree.load(LOCAL_ENV, connection, marketAddress);
const { ixs, setupIxs } = await market.ixWrapperBuyYt({
owner: wallet.publicKey,
ytOut: 1_000_000_000n,
maxBaseIn: 1_200_000_000n,
});
const tx = new Transaction().add(...setupIxs, ...ixs);
const signature = await sendAndConfirmTransaction(connection, tx, [wallet]);
This is an async method because it needs to construct the SY minting accounts and YT deposit accounts from the market’s configuration.
Required Parameters
| Parameter | Type | Description |
|---|
owner | PublicKey | The owner’s wallet public key |
ytOut | bigint | Amount of YT tokens to receive |
maxBaseIn | bigint | Maximum amount of base asset to spend |
Optional Parameters
| Parameter | Type | Description |
|---|
tokenSyTrader | PublicKey | Intermediate SY token account. Defaults to owner’s ATA |
tokenPtTrader | PublicKey | Intermediate PT token account. Defaults to owner’s ATA |
tokenYtTrader | PublicKey | Destination YT token account. Defaults to owner’s ATA |
tokenBaseTrader | PublicKey | Source base token account. Defaults to owner’s ATA |
Returns
Returns a Promise<PreparedInstruction> with the following structure:
{
ixs: TransactionInstruction[], // Main instructions to execute
setupIxs: TransactionInstruction[] // Setup instructions for creating ATAs
}
setupIxs array contains instructions to create the necessary associated token accounts (ATAs) for SY, PT, and YT tokens. The ixs array contains the flavor pre-instructions followed by the buy YT instruction. 
