0.0.2 • Published 7 years ago
0x-subproviders v0.0.2
0x subproviders
A bunch of useful subproviders, including a Ledger Nano subprovider.
Ledger Subprovider for Web3
Usage example as a Web3 Provider Engine.
import {
LedgerEthConnection,
LedgerWallet,
LedgerWalletSubprovider,
LedgerBrowserCommunicationFactory,
wrapWalletSubproviderFactory
} from '0x-subproviders';
const networkId = 42;
const provider = new ProviderEngine();
// Browser (U2F) or Node
const conn = new LedgerEthConnection(LedgerBrowserCommunicationFactory);
const wallet = new LedgerWallet(conn, networkId);
const ledgerSubProvider = wrapWalletSubproviderFactory(wallet);
// Hooks in as a HookedWalletSubProvider
// This takes over all Signing operations in the web3 stack
provider.addProvider(ledgerSubProvider);
// All other operations need to fall through to an underlying provider
// in this case infura or another JSON RPC endpoint
provider.addProvider(new RpcSubprovider(
rpcUrl: publicRpcNode,
));
provider.start();
Offset the derivation path
// Offset the derivation path
const conn = new LedgerEthConnection(LedgerBrowserCommunicationFactory);
const wallet = new LedgerWallet(conn, networkId);
wallet.setPathIndex(3);
Use directly rather than as a Web3 Provider
// Offset the derivation path
const conn = new LedgerEthConnection(LedgerBrowserCommunicationFactory);
const wallet = new LedgerWallet(conn, networkId);
wallet.getAccountsAsync((err, accounts) => { console.log(accounts) });
wallet.signPersonalMessageAsync("Hi There!", (err, result) => { console.log(result) });
Set the modified provider in 0x.js
this.zeroEx = new ZeroEx(provider);
Test the connection before assuming the ledger is present.
provider = new ProviderEngine();
const conn = new LedgerEthConnection(LedgerBrowserCommunicationFactory);
const wallet = new LedgerWallet(conn, networkId);
const timeout = 500;
wallet.testConnection(timeout, (err, connected) => {
if (_.isUndefined(err) && connected) {
utils.debug('provider')('ledger');
this.ledgerSubProvider = wrapWalletSubproviderFactory(wallet);
provider.addProvider(this.ledgerSubProvider);
} else {
utils.debug('provider')('injected');
provider.addProvider(new InjectedWeb3SubProvider(injectedWeb3));
}
utils.debug('provider')('filter');
provider.addProvider(new FilterSubprovider());
utils.debug('provider')(publicNodeUrlsIfExistsForNetworkId);
provider.addProvider(new RpcSubprovider(
rpcUrl: publicRpcNode,
));
provider.start();
});