Apex Dev Summit 2021 xrpl.js demo code

apex2021XrplJsDemo.ipynb

apex2021XrplJsDemo.ts

import { Client, TxRequest } from 'xrpl';
import { Payment } from 'xrpl';
import { xrpToDrops } from 'xrpl';


function sleep(ms: number) {
  return new Promise((resolve) => {
    setTimeout(resolve, ms);
  });
}


// set up client
const client = new Client('wss://s.altnet.rippletest.net:51233')

// client.on('error', (errorCode, errorMessage) => {console.log(errorCode + ': ' + errorMessage);});
// client.on('connected', () => {console.log('connected');});
// client.on('disconnected', (code) => {console.log('disconnected, code:', code);});

async function demo() {
  try {
    // connect to client
    await client.connect()
    console.log('connected')
    // get wallet
    const wallet = await client.generateFaucetWallet()
    console.log(wallet)
    console.log(await client.getBalances(wallet.classicAddress))

    // set up transaction
    const payment: Payment = {
      TransactionType: 'Payment',
      Account: wallet.getClassicAddress(),
      Amount: xrpToDrops('30'),
      Destination: 'rUCzEr6jrEyMpjhs4wSdQdz4g8Y382NxfM',
    }

    // autofill/sign/submit payment
    const autofilledPayment = await client.autofill(payment)
    console.log(autofilledPayment)

    const signedPayment = wallet.signTransaction(autofilledPayment)
    console.log(signedPayment)

    // submit payment
    const submitResponse = await client.submitSignedTransaction(signedPayment)
    console.log(submitResponse)

    // wait for validation (an approximation)
    await sleep(8000)

    // reprint balance after validation (should have decreased)
    console.log(await client.getBalances(wallet.classicAddress))

    // check the ledger for the transaction
    const request: TxRequest = {
      command: 'tx',
      transaction: submitResponse.result.tx_json.hash
    }
    await client.request(request)

    // exit
    process.exit(0)
  } catch (e) {
    console.log('ERROR')
    console.log(e)
    process.exit(1)
  }
}

demo()