ethereum-wallets

@near-wallet-selector/ethereum-wallets

This is the Ethereum Wallets package for NEAR Wallet Selector. The package adds support for Ethereum wallets by creating Ethereum-compatible transactions from NEAR transaction inputs.

Ethereum wallet support NEP: https://github.com/near/NEPs/issues/518

Any Ethereum wallet can be connected via Web3Modal: the dApp can chose which wallets to support and a multichain dApp can switch networks using the same wallet connection.

SignIn requires a switch to NEAR network, but the user can switch to other networks and will be prompted to switch back to NEAR before a transaction is made.

Sign out prompts to remove the FunctionCall access key if there is one, this action is not blocking and the user can sign out without executing the transaction.

A NEAR dApp can connect to multiple Ethereum wallet addresses. If the user switches address and connects from the wallet instead of the dApp, the wallet will be disconnected from the dApp so that it can reconnect with the signIn flow. If the dApp doesn't require a FunctionCall access key or the Ethereum wallet address already signed in, then the address connects automatically when changed.

signMessage and verifyOwner are not implemented because Ethereum wallets are not compatible with these standards, instead a dApp can use eth_sign or eth_signTypedData_v4 to authenticate the wallet by interacting with it directly.

NEP-518 doesn't support multiple actions within the same transaction, so when multiple actions are requested, they are split into separate transactions and executed 1 by 1.

Installation and Usage

The easiest way to use this package is to install it from the NPM registry, this package requires near-api-js v1.0.0 or above:

# Using Yarn
yarn add near-api-js @web3modal/wagmi @wagmi/core @wagmi/connectors viem @near-wallet-selector/ethereum-wallets

# Using NPM.
npm install near-api-js @web3modal/wagmi @wagmi/core @wagmi/connectors viem @near-wallet-selector/ethereum-wallets

Then use it in your dApp:

Visit https://docs.walletconnect.com for the latest configuration of Web3Modal.

import type { Config } from "@wagmi/core";
import { reconnect, http, createConfig } from "@wagmi/core";
import { coinbaseWallet, walletConnect, injected } from "@wagmi/connectors";
import { setupWalletSelector } from "@near-wallet-selector/core";
import { setupEthereumWallets } from "@near-wallet-selector/ethereum-wallets";

const wagmiConfig: Config = createConfig({
  chains: [near],
  transports: {
    [near.id]: http(),
  },
  connectors: [
    walletConnect({ projectId, metadata, showQrModal: false }),
    injected({ shimDisconnect: true }),
    coinbaseWallet({
      appName,
      appLogoUrl,
    }),
  ],
});
reconnect(wagmiConfig);

const web3Modal = createWeb3Modal({
  wagmiConfig: config,
  // Get a project ID at https://cloud.walletconnect.com
  projectId,
});

const _selector = await setupWalletSelector({
  network: "mainnet",
  debug: true,
  modules: [
    setupEthereumWallets({ wagmiConfig, web3Modal }),
  ],
});

Wallet Connect Configuration

Project ID is required, please obtain it from walletconnect.com

Options

• wagmiConfig: Wagmi Config for interacting with Ethereum wallets.
• web3Modal: Web3Modal object for connecting an Ethereum wallet and switching network.
• chainId (number?): Chain ID of the NEAR web3 rpc to connect to. Defaults to 397 (mainnet) or 398 (testnet) depending on the setupWalletSelector network configuration.
• rpcUrl (string?): Custom NEAR web3 rpc endpoint to query Ethereum wallet transaction receipts, defaults to todo (mainnet) or todo (testnet) depending on the setupWalletSelector network configuration.
• iconUrl (string?): Image URL for the icon shown in the modal. This can also be a relative path or base64 encoded image. Defaults to ./assets/wallet-connect-icon.png.

Developent options (before the NEAR protocol upgrade to support 0x accounts natively):

• devMode (boolean?): During development NEAR protocol doesn't yet support 0x123...abc accounts natively so in devMode the account with format 0x123...abc.eth-wallet.testnet is used insead. Setup your devMode account at https://near-wallet-playground.testnet.aurora.dev
• devModeAccount (string?): Modify the namespace of the devMode root accounts.

License

This repository is distributed under the terms of both the MIT license and the Apache License (Version 2.0).