idquia/packages/mew/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 type { WalletInit, EIP1193Provider } from '@web3-onboard/common'

function mew(): WalletInit {
  return () => {
    return {
      label: 'MEW Wallet',
      getIcon: async () => (await import('./icon.js')).default,
      getInterface: async ({ chains, EventEmitter }) => {
        const {
          createEIP1193Provider,
          ProviderRpcError,
          ProviderRpcErrorCode
        } = await import('@web3-onboard/common')

        const { firstValueFrom, fromEvent } = await import('rxjs')
        const { map, take } = await import('rxjs/operators')

        const { default: MEWWallet } = await import(
          '@myetherwallet/mewconnect-web-client'
        )

        const [chain] = chains
        const mewConnect = new MEWWallet.Provider({
          windowClosedError: true,
          chainId: parseInt(chain.id),
          rpcUrl: chain.rpcUrl
        })

        const disconnected$ = fromEvent(mewConnect, 'disconnect')

        const mewProvider: EIP1193Provider = mewConnect.makeWeb3Provider()
        const provider = createEIP1193Provider(mewProvider, {
          eth_requestAccounts: ({ baseRequest }) => {
            const closed$ = fromEvent(mewConnect, 'popupWindowClosed').pipe(
              map(() => {
                throw new ProviderRpcError({
                  code: ProviderRpcErrorCode.ACCOUNT_ACCESS_REJECTED,
                  message: 'Popup window closed'
                })
              }),
              take(1)
            )

            return Promise.race([
              baseRequest({ method: 'eth_requestAccounts' }),
              firstValueFrom(closed$)
            ])
          },
          eth_selectAccounts: null,
          wallet_addEthereumChain: null,
          wallet_switchEthereumChain: null
        })

        const events = new EventEmitter()

        disconnected$.pipe(take(1)).subscribe(() => {
          events.emit('accountsChanged', [])
        })

        provider.disconnect = () => mewConnect.disconnect()
        provider.on = events.on.bind(events)

        return {
          provider
        }
      }
    }
  }
}

/**
 * @deprecated Use @web3-onboard/mew-wallet
 */
export default mew