How to transfer token using spl-token 0.1.8

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I have this code that transfers a token using spl-token 0.2.x.

How do I have the same code work in 0.1.8? From my understanding of the docs, there were no breaking changes between the two, but the older version uses a Token class, but I'm not sure how to call it for the getOrCreateAssociatedTokenAccount and transfer functions.

async function transferToken(endpoint: string, fromWallet: Keypair, address_to: string, token_id: string)
{
    const connection = new Connection(endpoint);
    const toWalletPublicKey = new PublicKey(address_to);
    const mint_key = new PublicKey(token_id);

    // From
    const from = [connection, fromWallet, mint_key, fromWallet.publicKey];
    const fromTokenAccount = await getOrCreateAssociatedTokenAccount(...from);

    // To
    const to = [connection, fromWallet, mint_key, toWalletPublicKey];
    const toTokenAccount = await getOrCreateAssociatedTokenAccount(...to);

    // Transfer
    const transferParams = [connection, fromWallet, fromTokenAccount.address, toTokenAccount.address, fromWallet.publicKey, 1, []];
    return await transfer(...transferParams);  
}

This is how I pass the fromWallet KeyPair loaded from hex string.

const fromWallet = Keypair.fromSecretKey(Uint8Array.from(Buffer.from(private_key, 'hex')));
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1 Answers

Actually version 2 does have break changes (hence the major bump of the version), in this case it was removing the Token class in favour of those functions that you see in the example.

The docs are quite... bad, but if you check the Github project one year ago then you can see how the function was migrated little by little.

getOrCreateAssociatedTokenAccount and transfer require to use the class Token in the next way:


const token = new Token(connection, toWalletPublicKey, mint_key, fromWallet.publicKey) // Not sure about the last argument as it is the Signer

/**
   * Retrieve the associated account or create one if not found.
   *
   * This account may then be used as a `transfer()` or `approve()` destination
   *
   * @param owner User account that will own the new account
   * @return The new associated account
   */
const fromTokenAccount = token.getOrCreateAssociatedAccountInfo(fromWallet.publicKey)

const toTokenAccount = token.getOrCreateAssociatedAccountInfo(toWalletPublicKey)

/**
* Transfer parameters
* @param source Source account
* @param destination Destination account
* @param owner Owner of the source account
* @param multiSigners Signing accounts if `owner` is a multiSig
* @param amount Number of tokens to transfer
*/
token.transfer(fromTokenAccount, toTokenAccount, fromWallet, [], 1)

Also this is partially answered in here

SirPeople0
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