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The ixMergeToBase method on the Vault class creates transaction instructions that merge PT and YT back into SY and then unwrap the SY into the base asset in a single atomic operation.

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Usage

import { Vault, 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 vault = await Vault.load(LOCAL_ENV, connection, vaultAddress);

const { ixs, setupIxs } = await vault.ixMergeToBase({
  owner: wallet.publicKey,
  amountPy: 1_000_000_000n,
});

const tx = new Transaction().add(...setupIxs, ...ixs);
const signature = await sendAndConfirmTransaction(connection, tx, [wallet]);
This method returns both setupIxs (token account creation) and ixs (the merge + unwrap instructions, including any pre/post instructions from the flavor). Make sure to include both in your transaction.

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Required Parameters

ParameterTypeDescription
ownerPublicKeyThe owner’s wallet public key
amountPybigintAmount of PT and YT to merge

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Optional Parameters

ParameterTypeDescription
ptSrcPublicKeySource PT token account. Defaults to owner’s ATA
ytSrcPublicKeySource YT token account. Defaults to owner’s ATA
syDstPublicKeyIntermediate SY token account. Defaults to owner’s ATA
baseDstPublicKeyDestination base token account

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Returns

Returns a Promise<{ ixs: TransactionInstruction[]; setupIxs: TransactionInstruction[] }>:
  • ixs — The merge and unwrap instructions, including any flavor-specific pre/post instructions
  • setupIxs — Setup instructions that create associated token accounts for SY, PT, and YT