Vorpal Vantage: i'm not able to exit the interactive console programmatically

Question

What's wrong with this?

const Vantage = require('vantage')

const v = Vantage()
    .delimiter('$test')
    .listen(9000)
    .show()

const close = () => {
    v.exec('exit', () => {
        console.log('DONE')
    })
 }  
setTimeout(close, 1000)

Error:

UI Prompt called when already mid prompt. at Object.prompt (/Users/giggioz/Spaghetti/keeper/keeper-giochipiu-delegates/node_modules/vorpal/lib/ui.js:131:13) at Vorpal.vorpal.prompt (/Users/giggioz/Spaghetti/keeper/keeper-giochipiu-delegates/node_modules/vorpal/lib/vorpal.js:450:8) at Vorpal.vorpal.exit (/Users/giggioz/Spaghetti/keeper/keeper-giochipiu-delegates/node_modules/vorpal/lib/vorpal.js:1160:12) at Session. (/Users/giggioz/Spaghetti/keeper/keeper-giochipiu-delegates/node_modules/vorpal/lib/vorpal-commons.js:49:19) at Vorpal.vorpal._exec (/Users/giggioz/Spaghetti/keeper/keeper-giochipiu-delegates/node_modules/vorpal/lib/vorpal.js:846:18) at Vorpal.vorpal._execQueueItem (/Users/giggioz/Spaghetti/keeper/keeper-giochipiu-delegates/node_modules/vorpal/lib/vorpal.js:594:10) at Vorpal.vorpal._queueHandler (/Users/giggioz/Spaghetti/keeper/keeper-giochipiu-delegates/node_modules/vorpal/lib/vorpal.js:579:10) at Vorpal.vorpal.exec (/Users/giggioz/Spaghetti/keeper/keeper-giochipiu-delegates/node_modules/vorpal/lib/vorpal.js:554:24) at Timeout.close [as _onTimeout] (/Users/giggioz/Spaghetti/keeper/keeper-giochipiu-delegates/xxx.js:9:7) at ontimeout (timers.js:380:14)

Answer 1

Solution:

const Vantage = require('vantage')

Vantage()
    .delimiter('$test')
    .listen(9000)
    .show()

const close = () => {
    process.exit(1)
}
setTimeout(close, 1000)