saepenatus/packages/mew-wallet/src/index.ts

Web3-Onboard makes it simple to connect Ethereum hardware and software wallets to your dapp. Features standardised spec compliant web3 providers for all supported wallets, framework agnostic modern javascript UI with code splitting, CSS customization, mul

import { ProviderRpcError, WalletInit } from '@web3-onboard/common'
import { createEIP1193Provider } from '@web3-onboard/common'
import { CustomWindow } from './types.js'
declare const window: CustomWindow

function mewWallet(): WalletInit {
  if (typeof window === 'undefined') return () => null
  return ({ device }) => {
    return device.type === 'mobile'
      ? {
          label: 'MEW wallet',
          getIcon: async () => (await import('./icon.js')).default,
          getInterface: async () => {
            const provider =
              window.hasOwnProperty('ethereum') && window.ethereum.isMEWwallet
            if (provider) {
              return {
                provider: createEIP1193Provider(window.ethereum, {
                  wallet_switchEthereumChain: async ({ params }) => {
                    if (device.os.name.toLowerCase() === 'ios') {
                      throw new ProviderRpcError({
                        message: 'MEW Wallet iOS only supports ETH network',
                        code: 4200
                      })
                    }
                    window.ethereum.setChainId(parseInt(params[0].chainId))
                    return null
                  }
                })
              }
            } else {
              window.open(
                'https://download.mewwallet.com?source=onboard',
                '_blank'
              )
              throw new Error(
                'Please Install MEW wallet and use within the MEW DApp browser'
              )
            }
          }
        }
      : null
  }
}

export default mewWallet