Question: how to use prompt with code running between confirm to continue

[Trevor Miller]

All the documentation and examples show prompt being used to gather all input upfront before running code. But how can I use prompt a few times while running code without having callback hell? Some pseudocode for example:

// run some code

// Prompt for “Does this look right? Enter “yes” to continue

// Once “yes” is entered, run some more code

// Prompt for “Does this look right? Enter “yes” to continue.

etc.

[Trevor Miller]

It seems that nested callbacks are how this has to be done right now based on the examples/ - like this:

prompt.start();

// do stuff here

const property1 = {
  name: 'yes',
  message: 'are you sure (1)?',
  validator: /yes/,
  warning: 'Must respond yes to continue',
  default: ''
};

prompt.get(property1, () => {

  // do more stuff here after "yes" from user

  const property2 = {
    name: 'yes',
    message: 'are you sure (2)?',
    validator: /yes/,
    warning: 'Must respond yes to continue',
    default: ''
  };

  prompt.get(property2, () => {

    // do even more stuff here after "yes" from user

    const property3 = {
      name: 'yes',
      message: 'are you sure (3)?',
      validator: /yes/,
      warning: 'Must respond yes to continue',
      default: ''
    };

    prompt.get(property3, () => {
      // do yet more stuff here after "yes" from user

      etc.
    }
  }
});

Is there a way to condense this into a flat synchronous / procedural style from top to bottom? Perhaps with async/await?

[Trevor Miller]

Figured it out:

const prompt = require('prompt')

prompt.start()

userInput = property =>
  new Promise(resolve => {
    prompt.get(property, (err, result) => {
      if (err) {
        reject(err)
      }

      resolve(result)
    })
  })

const main = async () => {
  try {
    console.log('Starting...')

    const result1 = await userInput({
      name: 'confirmThing1',
      message: 'Does this look good to continue?',
      validator: /yes/,
      warning: 'Must respond yes to continue',
      default: '',
    })

    console.log('result1', result1)

    const result2 = await userInput({
      name: 'confirmThing2',
      message: 'Does this look good to continue?',
      validator: /yes/,
      warning: 'Must respond yes to continue',
      default: '',
    })

    console.log('result2', result2)

    console.log('Wrapping up...')
  } catch (error) {
    console.error(error)
  }
}

main()

[Trevor Miller]

Submitted to examples/: #191