To check the balance of a specific asset, you can use getBalance method. This function aggregates the amounts of all unspent coins of the given asset in your wallet.
import type { BN } from 'fuels';
import { Provider, Wallet } from 'fuels';
import { LOCAL_NETWORK_URL, WALLET_PVT_KEY } from '../env';
const provider = await Provider.create(LOCAL_NETWORK_URL);
const myWallet = Wallet.fromPrivateKey(WALLET_PVT_KEY, provider);
// The returned amount is a BigNumber
const balance: BN = await myWallet.getBalance(provider.getBaseAssetId());
To retrieve the balances of all assets in your wallet, use the getBalances method, it returns an array of CoinQuantity . This is useful for getting a comprehensive view of your holdings.
import { Provider, Wallet } from 'fuels';
import { WALLET_PVT_KEY_2, LOCAL_NETWORK_URL } from '../env';
const provider = await Provider.create(LOCAL_NETWORK_URL);
const myOtherWallet = Wallet.fromPrivateKey(WALLET_PVT_KEY_2, provider);
const { balances } = await myOtherWallet.getBalances();