Wallets
Contents
Wallets#
Create a wallet#
Use LCDClient.wallet() to create a Wallet from a Key.
import { LCDClient, MnemonicKey } from '@terra-money/terra.js';
const terra = new LCDClient({
URL: 'https://lcd.terra.dev',
chainId: 'columbus-5'
});
const mk = new MnemonicKey();
const wallet = terra.wallet(mk);
In the above example, a MnemonicKey was specified for the wallet, but any type of Key implementation can be used instead.
Usage#
Getting account number and sequence#
A wallet is connected to the Terra blockchain and can poll the values of an account’s account number and sequence directly:
console.log(await wallet.accountNumber());
console.log(await wallet.sequence());
Creating transactions#
A wallet makes it easy to create a transaction by automatically fetching the account number and sequence from the blockchain. The fee parameter is optional – if you don’t include it, Terra.js will automatically use your LCD’s fee estimation settings to simulate the transaction within the node and include the resultant fee in your transaction.
const msgs = [ ... ]; // list of messages
const fee = Fee(...); // optional fee
const unsignedTx = await wallet.createTx({
msgs,
// fee, (optional)
memo: 'this is optional'
});
You can then sign the transaction with the wallet’s key, which will create a StdTx which you can later broadcast:
const tx = wallet.key.signTx(unsignedTx);
You can also use the convenience function Wallet.createAndSignTx(), which automatically generates a signed transaction to be broadcast:
const tx = await wallet.createAndSignTx({
msgs,
fee,
memo: 'this is optional'
});