open

`isOpen()`

Check if the wallet is open.

ts

import { FedimintWallet
 } from '@fedimint/core-web'

const wallet
 = new FedimintWallet
()

const isOpen
 = wallet
.isOpen
() 

if (!isOpen
) {
  await wallet
.joinFederation
('fed123...')
} else {
  const balance
 = await wallet
.balance
.getBalance
()
}