ripple-lib 1.xからxrpl.js 2.xへの移行ガイド

const ripple = require('ripple-lib');

(async function() {
  const api = new ripple.RippleAPI({
    server: 'wss://xrplcluster.com'
  });

  await api.connect();

  // Your code here

  api.disconnect();
})();

const xrpl = require("xrpl");

(async function() {
  const client = new xrpl.Client('wss://xrplcluster.com');

  await client.connect();

  // Your code here

  client.disconnect();
})();

const trustlines = await api.getTrustlines("rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn")
console.log(trustlines)

const trustlines = await client.request({
  "command": "account_lines",
  "account": "rf1BiGeXwwQoi8Z2ueFYTEXSwuJYfV2Jpn",
  "ledger_index": "validated"
})
console.log(trustlines.result)

const tx_json = await client.autofill({
  "TransactionType": "AccountSet",
  "Account": wallet.address, // "wallet"はWalletクラスのインスタンス
  "SetFlag": xrpl.AccountSetAsfFlags.asfRequireDest
})
try {
  const submit_result = await client.submitAndWait(tx_json, wallet)
  // submitAndWait() はトランザクションの結果が確定するまでreturnしません。
  // トランザクションがネットワークに確認されなかった場合、XrplErrorが発生します。
  // ディザスタリカバリには対応しません。
  console.log("Transaction result:", submit_result)
} catch(err) {
  console.log("Error submitting transaction:", err)
}

const vli = await client.getLedgerIndex()

const prepared = await client.autofill({
  "TransactionType": "Payment",
  "Account": sender,
  "Amount": xrpl.xrpToDrops("50.2"),
  "Destination": "rPT1Sjq2YGrBMTttX4GZHjKu9dyfzbpAYe",
  "LastLedgerSequence": vli+75 // デフォルトの1分以内ではなく5分以内
})

const prepared = await client.autofill({
  "TransactionType": "Payment",
  "Account": sender,
  "Amount": xrpl.xrpToDrops("50.2"),
  "Destination": "rPT1Sjq2YGrBMTttX4GZHjKu9dyfzbpAYe",
  "LastLedgerSequence": null // トランザクションは有効期限切れになりません
})

const api = new RippleAPI()
const {address, secret} = api.generateAddress({algorithm: "ed25519"})
console.log(address, secret)
// rJvMQ3cwtyrNpVJDTW4pZzLnGeovHcdE6E s████████████████████████████

const wallet = xrpl.Wallet.generate("ed25519")
console.log(wallet)
// Wallet {
//   publicKey: 'ED872A4099B61B0C187C6A27258F49B421AC384FBAD23F31330E666A5F50E0ED7E',
//   privateKey: 'ED224D2BDCF6382030C7612654D2118C5CEE16344C81CB36EC7A01EC7D95C5F737',
//   classicAddress: 'rMV3CPSXAdRpW96bvvnSu4zHTZ6ETBkQkd',
//   seed: 's████████████████████████████'
// }

const api = new RippleAPI()
const seed = 's████████████████████████████';
const keypair = api.deriveKeypair(seed)
const address = api.deriveAddress(keypair.publicKey)
const tx_json = {
  "Account": address,
  "TransactionType":"Payment",
  "Destination":"rPT1Sjq2YGrBMTttX4GZHjKu9dyfzbpAYe",
  "Amount":"13000000",
  "Flags":2147483648,
  "LastLedgerSequence":7835923,
  "Fee":"13",
  "Sequence":2
}
const signed = api.sign(JSON.stringify(tx_json), seed)

const wallet = xrpl.Wallet.fromSeed('s████████████████████████████')
const tx_json = {
  "Account": wallet.address,
  "TransactionType":"Payment",
  "Destination":"rPT1Sjq2YGrBMTttX4GZHjKu9dyfzbpAYe",
  "Amount":"13000000",
  "Flags":2147483648,
  "LastLedgerSequence":7835923,
  "Fee":"13",
  "Sequence":2
}
const signed = wallet.sign(tx_json)

api.on("ledger", (ledger) => {
  console.log(`Ledger #${ledger.ledgerVersion} closed!
    It contains ${ledger.transactionCount} transaction(s) and has
    the ledger_hash ${ledger.ledgerHash}.`
  )
})
// "ledger"イベントはAPI接続が確立後自動的に開始します。

client.on("ledgerClosed", (ledger) => {
  console.log(`Ledger #${ledger.ledger_index} closed!
    It contains ${ledger.txn_count} transaction(s) and has
    the ledger_hash ${ledger.ledger_hash}.`
  )
})
// ”ledgerClosed "イベントを取得するには、"ledger "ストリームを明示的にサブスクライブする必要があります。
client.request({
  "command": "subscribe",
  "streams": ["ledger"]
})