Dock Wallet SDK

Using polkadot-js libraries in React Native is a challenge, due to a lack of WebAssembly support.

The Dock Wallet SDK handles all the Polkadot Web Assembly in a WebView, sending messages to the React Native thread through a JSON RPC layer.

All you need to do is wrap your app in a WalletSDKProvider and start building your Polkadot wallet.

Installation

yarn add @docknetwork/wallet-sdk-core
yarn add @docknetwork/wallet-sdk-transactions
yarn add @docknetwork/wallet-sdk-react-native

There are some scripts and additional dependencies required. Please check our example repo for detailed steps.

React Native Example

The following example will create a wallet and allow the user to add accounts on it. Displaying the count of documents added to the wallet.

Notice that the account documents are accessible through the documents object, and for each account created multiple documents will be added to the wallet.

import {Box, Button, NativeBaseProvider, Text} from 'native-base';
import React, {useEffect} from 'react';
import {
  WalletSDKProvider,
  useWallet,
} from '@docknetwork/wallet-sdk-react-native/lib';

const WalletDetails = function () {
  const {wallet, status, documents} = useWallet();

  return (
    <Box>
      <Text>Wallet status: {status}</Text>
      <Text>Wallet docs: {documents.length}</Text>
      <Button onPress={() => wallet.accounts.create({name: 'test'})}>
        <Text>Add Account</Text>
      </Button>
    </Box>
  );
};

const App = () => {
  return (
    <NativeBaseProvider>
      <WalletSDKProvider>
        <Box p={8}>
          <Text>Dock Wallet SDK Demo</Text>
          <Text>Press on `add document` button to create a new account</Text>
        </Box>
        <WalletDetails />
      </WalletSDKProvider>
    </NativeBaseProvider>
  );
};

export default App;

Using the wallet module

import {Wallet} from '@docknetwork/wallet-sdk-core/lib/modules/wallet';
import {Transactions} from '@docknetwork/wallet-sdk-transactions/lib/transactions';

const wallet = await Wallet.create();

const account1 = await wallet.accounts.create({
  name: 'test',
});

console.log(`Account1 address ${account1.address}`);
// result: Account1 address 3D1M9UnR684eBfVujjQr6ucPqvXERSxYxcVBFGAhRohhRXxq

// Create account using an existing mnemonic
const mnemonic =
  'indicate mention thing discover clarify grief inherit vivid dish health market spoil';
const account2 = await wallet.accounts.create({
  name: 'Test',
  mnemonic,
});

console.log(`Account2 address ${account2.address}`);

// result: Account2 address 3FENesfZgFmBruv2H9Hc17GmobeTfxFAp8gHKXFmUtA38hcW

// Fetch accounts balance
const balance = await account1.getBalance();

console.log('Account1 balance', balance);

// result: Account1 balance 0

// Handle transactions
const transactions = Transactions.with(account1);

const txInput = {
  toAddress: account2.address,
  amount: 3
};

// Get transaction fee in DOCK tokens
const fee = await transactions.getFee(txInput);

console.log('Transaction fee', fee);

// result: Transaction fee 2.3

// Send transaction
const hash = await transactions.send(txInput);

console.log('Transaction hash', fee);

// result: Transaction hash 0x1c1c5ca40acafb830460dccb492be4ac7181e9d700ab78853df052e478e8b2a9

Running on nodejs

Check the following repository for nodejs project examples.

https://github.com/docknetwork/wallet-sdk-examples

Docs