@solana/spl-token#getMinimumBalanceForRentExemptMint TypeScript Examples

The following examples show how to use @solana/spl-token#getMinimumBalanceForRentExemptMint. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: solana.tx.ts    From tatum-js with MIT License 5 votes vote down vote up 
createSplToken = async (
  body: CreateSolanaSpl,
  web3: SolanaWeb3,
  provider?: string,
  feePayer?: string,
  feePayerPrivateKey?: string,
) => {
  const connection = web3.getClient(provider)
  const payer = new PublicKey(feePayer || body.from)
  const transaction = new Transaction({ feePayer: payer })
  const lamports = await getMinimumBalanceForRentExemptMint(connection)

  const mint = Keypair.generate()
  transaction.add(
    SystemProgram.createAccount({
      fromPubkey: payer,
      newAccountPubkey: mint.publicKey,
      space: MINT_SIZE,
      lamports,
      programId: TOKEN_PROGRAM_ID,
    }),
    createInitializeMintInstruction(mint.publicKey, body.digits, payer, payer, TOKEN_PROGRAM_ID),
  )
  const userTokenAccountAddress = (
    await PublicKey.findProgramAddress(
      [new PublicKey(body.address).toBuffer(), TOKEN_PROGRAM_ID.toBuffer(), mint.publicKey.toBuffer()],
      SPL_ASSOCIATED_TOKEN_ACCOUNT_PROGRAM_ID,
    )
  )[0]
  transaction.add(
    createAssociatedTokenAccountInstruction(
      userTokenAccountAddress,
      payer,
      new PublicKey(body.address),
      mint.publicKey,
    ),
    createMintToInstruction(
      mint.publicKey,
      userTokenAccountAddress,
      payer,
      new BigNumber(body.supply).multipliedBy(10 ** body.digits).toNumber(),
      [],
      TOKEN_PROGRAM_ID,
    ),
  )
  if (body.signatureId) {
    transaction.recentBlockhash = '7WyEshBZcZwEbJsvSeGgCkSNMxxxFAym3x7Cuj6UjAUE'
    return { txData: transaction.compileMessage().serialize().toString('hex') }
  }

  const signers = [web3.generateKeyPair(feePayerPrivateKey || body.fromPrivateKey), mint]
  return {
    txId: await connection.sendTransaction(transaction, signers),
    contractAddress: mint.publicKey.toBase58(),
  }
}