readline-once

Install

npm install --save readline-once

Examples

With normal strings.

var rlonce = require('readline-once')();

rlonce('first name? ', true).then(function(val){
    console.log('first name = '+val)

    return rlonce('last name? ').then(function(val){
        console.log('last name = '+val)
    });

}).catch(function(e){
    console.log('error! ', e);
});

With an array.

var rlonce = require('readline-once')();

rlonce(['first name? ', 'last name? ']).then(function(fullname){
    console.log('full name = '+fullname.join(' '));
}).catch(function(e){
    console.log(e);
});

API

factory(undefined|readline)

Get the factory by importing the module.

var factory = require('readline-once'),
    rlonce = factory();

Or use you're own instance of readline.

var factory = require('readline-once'),
    rl = readline.createInterface({
        input: process.stdin,
        output: process.stdout
    }),
    rlonce = factory(rl);

Or call it all at once.

var rlonce = require('readline-once')();

With readline passed to the factory.

var rlonce = require('readline-once')(readline.createInterface({
    input: process.stdin,
    output: process.stdout
}));

rlonce(question|array, require) -> Promise

Ask a question, or pass an array of questions.

The require argument forces the question(s) to be asked again if it's not filled out.

About

Sometimes it's nice to just have a one shot readline call.

This function will also work nicely with coroutines, and async await.