Instantiating Wallets

Wallets can be instantiated in multiple ways within the SDK.

Generating new wallets

To generate a new, unlocked wallet, use the generate method. This method creates a new WalletUnlocked instance, which is immediately ready for use.

import { Wallet } from 'fuels';
import type { WalletUnlocked } from 'fuels';

const wallet: WalletUnlocked = Wallet.generate();

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Instantiating Unlocked Wallets

Creating WalletUnlocked instances of your existing wallets is easy and can be done in several ways:

From a private key:

import type { WalletUnlocked } from 'fuels';
import { Wallet } from 'fuels';

const privateKey =
  '0x36ca81ba70f3e04b7cc8780bff42d907ebca508097d4ae3df5147c93fd217f7c';

const wallet: WalletUnlocked = Wallet.fromPrivateKey(privateKey);

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From a mnemonic phrase:

import type { WalletUnlocked } from 'fuels';
import { Wallet } from 'fuels';

const mnemonic =
  'section gospel lady april mouse huge prosper boy urge fox tackle orient';

const wallet: WalletUnlocked = Wallet.fromMnemonic(mnemonic);

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From a seed:

import type { WalletUnlocked } from 'fuels';
import { Wallet } from 'fuels';

const seed =
  '0xa5d42fd0cf8825fc846b2f257887a515573ee5b779e99f060dc945b3d5504bca';

const wallet: WalletUnlocked = Wallet.fromSeed(seed);

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From a Hierarchical Deterministic (HD) derived key:

import type { WalletUnlocked } from 'fuels';
import { HDWallet, Wallet } from 'fuels';

const seed =
  '0xa5d42fd0cf8825fc846b2f257887a515573ee5b779e99f060dc945b3d5504bca';

const extendedKey = HDWallet.fromSeed(seed).toExtendedKey();

const wallet: WalletUnlocked = Wallet.fromExtendedKey(extendedKey);

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From a JSON wallet:

import type { WalletUnlocked } from 'fuels';
import { Wallet } from 'fuels';

const jsonWallet = `{"id":"83d1792f-3230-496a-92af-3b44a1524fd6","version":3,"address":"ada436e1b80f855f94d678771c384504e46335f571aa244f11b5a70fe3e61644","crypto":{"cipher":"aes-128-ctr","mac":"6911499ec31a6a6d240220971730374396efd666bd34123d4e3ce85e4cf248c6","cipherparams":{"iv":"40576cbd4f7c84e88b0532320e23b425"},"ciphertext":"3e5e77f23444aa86b397dbc62e14d8b7d3fd7c7fe209e066bb7df17eca398129","kdf":"scrypt","kdfparams":{"dklen":32,"n":8192,"p":1,"r":8,"salt":"b046520d85090ee2abd6285174f37bc01e28846b6bb5edc03ae5f7c13aec03d2"}}}`;

const password = 'password';

const wallet: WalletUnlocked = await Wallet.fromEncryptedJson(
  jsonWallet,
  password
);

See code in context

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It's possible to instantiate a WalletUnlocked from a WalletLocked:

import type { WalletLocked, WalletUnlocked } from 'fuels';
import { Wallet } from 'fuels';

const address =
  'fuel1fjett54ahnydhklerngqhclzmmkmp6s0xnykns8dwsdpjfg3r2rsfazpw5';
const privateKey =
  '0x9deba03f08676716e3a4247797672d8008a5198d183048be65415ef89447b890';

const lockedWallet: WalletLocked = Wallet.fromAddress(address);

const wallet: WalletUnlocked = lockedWallet.unlock(privateKey);

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Instantiating Locked Wallets

You can also instantiate WalletLocked instances using just the wallet address:

import type { WalletLocked } from 'fuels';
import { Wallet } from 'fuels';

const address = `fuel14kjrdcdcp7z4l9xk0pm3cwz9qnjxxd04wx4zgnc3kknslclxzezqyeux5d`;

const wallet: WalletLocked = Wallet.fromAddress(address);

See code in context

Connecting to a Provider

While wallets can be used independently of a Provider, operations requiring blockchain interaction will need one.

Connecting an existing wallet to a Provider:

import type { WalletLocked } from 'fuels';
import { Provider, Wallet } from 'fuels';

import { LOCAL_NETWORK_URL, WALLET_ADDRESS } from '../../env';

const provider = await Provider.create(LOCAL_NETWORK_URL);

const wallet: WalletLocked = Wallet.fromAddress(WALLET_ADDRESS);
wallet.connect(provider);

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Instantiating a wallet with a Provider:

import type { WalletLocked } from 'fuels';
import { Provider, Wallet } from 'fuels';

import { LOCAL_NETWORK_URL, WALLET_ADDRESS } from '../../env';

const provider = await Provider.create(LOCAL_NETWORK_URL);

const wallet: WalletLocked = Wallet.fromAddress(WALLET_ADDRESS, provider);

See code in context