I need to unwrap some SOL using the web3 sdk. I'm wondering, Is it just a simple transfer from the wrapped account into SOL account or is it more complicated than that? Below Is just some sample code I've setup.
const emptyWSolAccount = async (amount:any) => { const wsolAddress = await Token.getAssociatedTokenAddress( ASSOCIATED_TOKEN_PROGRAM_ID, TOKEN_PROGRAM_ID, new PublicKey("So11111111111111111111111111111111111111112"), wallet.publicKey ); const wsolAccount = await connection.getAccountInfo(wsolAddress); if (wsolAccount) { const transaction = new Transaction({ feePayer: wallet.publicKey, }); const instructions = []; const lamports = amount * LAMPORTS_PER_SOL; instructions.push( SystemProgram.transfer({ fromPubkey: wsolAddress, toPubkey: wallet.publicKey, lamports: lamports, // 1 sol }) ); transaction.add(...instructions); transaction.recentBlockhash = await ( await connection.getRecentBlockhash() ).blockhash; transaction.partialSign(wallet.payer); const result = await connection.sendTransaction(transaction, [ wallet.payer, ]); console.log({ result }); return { result }; } return ; }; 1 Answer
This is not really explained anywhere, but unwrapping SOL actually means closing the wrapped SOL account.
So instead of using a SystemProgram.transfer instruction, you'll do:
instructions.push( splToken.instructions.createCloseAccountInstruction( wsolAddress, wallet.publicKey, wallet.publicKey, ) ); This closes wsolAddress and sends the contents to wallet, assuming that wallet is the owner.
