HD Wallet-enabled Web3 provider. Use it to sign transactions for addresses derived from a 12-word mnemonic.
$ npm install truffle-hdwallet-provider
You can use this provider wherever a Web3 provider is needed, not just in Truffle. For Truffle-specific usage, see next section.
var HDWalletProvider = require("truffle-hdwallet-provider");
var mnemonic = "opinion destroy betray ..."; // 12 word mnemonic
var provider = new HDWalletProvider(mnemonic, "http://localhost:8545");
// Or, alternatively pass in a zero-based address index.
var provider = new HDWalletProvider(mnemonic, "http://localhost:8545", 5);By default, the HDWalletProvider will use the address of the first address that's generated from the mnemonic. If you pass in a specific index, it'll use that address instead. Currently, the HDWalletProvider manages only one address at a time, but it can be easily upgraded to manage (i.e., "unlock") multiple addresses.
Parameters:
mnemonic:string. 12 word mnemonic which addresses are created from.provider_uri:string. URI of Ethereum client to send all other non-transaction-related Web3 requests.address_index:number, optional. If specified, will tell the provider to manage the address at the index specified. Defaults to the first address (index0).
You can easily use this within a Truffle configuration. For instance:
truffle.js
var HDWalletProvider = require("truffle-hdwallet-provider");
var mnemonic = "opinion destroy betray ...";
module.exports = {
networks: {
development: {
host: "localhost",
port: 8545,
network_id: "*" // Match any network id
},
ropsten: {
provider: new HDWalletProvider(mnemonic, "https://ropsten.infura.io/"),
network_id: 3
}
}
};