commandline-ui

A Node.js-package for asking users questions on the commandline.

What

A lightweight wrapper for using 'readline' of Node.js, no dependencies.

Why

• Took a while to figure out how to chain multiple questions with 'readline'.

• There a more sophisticated packages for this purpose, but we want to keep it simple, tilda.

How

After installing this package in one of yours, write into e.g. index.js:

// Import function:
var askQuestions = require('commandline-ui').askQuestions

// Preparate arguments. First off the questions:
var questions = ['What', 'Why', 'How']

// And an answers-handler to proceed with the retrieved answers:
var onAnswers = (answers) => console.log(answers)

// Now call the function:
askQuestions(questions, onAnswers)

Then execute it with node from the commandline:

node index.js

That'll walk you through the answers and display all questions afterwards.

Optionally pass a handler for each single answer, too. It must return true, otherwise the answer is considered to be invalid, and will be re-asked until it's valid:

var onAnswer = (answer, question) => {
  if(question == 'What' && answer == 'Faith') return true
  if(question == 'Why'  && answer == 'Love')  return true
  if(question == 'How'  && answer == 'Hope')  return true
}

askQuestions(questions, onAnswers, onAnswer)

You can omit the handler for all answers, by passing a falsy value:

askQuestions(questions, null, onAnswer)

Author

Ida Ebkes, 2019.

Contact

For questions, suggestions and bug-reports, please open an issue on https://github.com/ida/commandline-ui/issues

License

MIT, a copy is attached.