ReferenceError: trainingPrompt is not defined
at Object.isTwss (/Users/Daniel/twss.js/lib/classifier/knn.js:35:7)
at Object.is (/Users/Daniel/twss.js/lib/twss.js:49:33)
at [object Context]:1:3
at Interface.<anonymous> (repl.js:171:22)
at Interface.emit (events.js:64:17)
at Interface._onLine (readline.js:153:10)
at Interface._line (readline.js:408:8)
at Interface._ttyWrite (readline.js:585:14)
at ReadStream.<anonymous> (readline.js:73:12)
at ReadStream.emit (events.js:81:20)
It just returns this error: