solana js examples

mint.js

const web3 =  require('@solana/web3.js');
const splToken = require('@solana/spl-token');

(async () => {

    //create connection to devnet
    const connection = new web3.Connection(web3.clusterApiUrl("devnet"));

    //generate keypair and airdrop 1000000000 Lamports (1 SOL)
    const myKeypair = web3.Keypair.generate();
    await connection.requestAirdrop(myKeypair.publicKey, 1000000000);

    console.log('solana public address: ' + myKeypair.publicKey.toBase58());

    //set timeout to account for airdrop finalization
    let mint;
    var myToken
    setTimeout(async function(){ 

        //create mint
        mint = await splToken.Token.createMint(connection, myKeypair, myKeypair.publicKey, null, 9, splToken.TOKEN_PROGRAM_ID)

        console.log('mint public address: ' + mint.publicKey.toBase58());

        //get the token accont of this solana address, if it does not exist, create it
        myToken = await mint.getOrCreateAssociatedAccountInfo(
            myKeypair.publicKey
        )

        console.log('token public address: ' + myToken.address.toBase58());

        //minting 100 new tokens to the token address we just created
        await mint.mintTo(myToken.address, myKeypair.publicKey, [], 1000000000);

        console.log('done');

    }, 20000);

})();

transfer.js

var web3 = require("@solana/web3.js");

  (async () => {

    // Connect to cluster
    var connection = new web3.Connection(web3.clusterApiUrl("devnet"));
    
    // Construct a `Keypair` from secret key
    var from = web3.Keypair.generate();
    await connection.requestAirdrop(from.publicKey, 1000000000);

    // Generate a new random public key
    var to = web3.Keypair.generate();
    await connection.requestAirdrop(to.publicKey, 1000000000);

    //waiting 1000 miliseconds to make the the airdrop transactions are complete
    setTimeout(async function(){ 

      // Add transfer instruction to transaction
      var transaction = new web3.Transaction().add(
        web3.SystemProgram.transfer({
          fromPubkey: from.publicKey,
          toPubkey: to.publicKey,
          lamports: web3.LAMPORTS_PER_SOL / 100,
        })
      );
      
      // Sign transaction, broadcast, and confirm
      var signature = await web3.sendAndConfirmTransaction(
        connection,
        transaction,
        [from],
        {commitment: 'confirmed'}
      );
      console.log("SIGNATURE", signature);
      console.log("SUCCESS");

  }, 1000);

})();