tp.getEosBalance({
    account: 'itokenpocket',
    contract: 'eosio.token',
    symbol: 'EOS'
}).then(console.log)

> {
    result: true,
    data:{"symbol":"EOS","balance":"["142.2648 EOS"]","contract":"eosio.token","account":"itokenpocket"},
    msg: 'success'
}