cc-zos/lib/utils/promptBoolean.js

Command-line interface for the ZeppelinOS smart contract platform

'use strict';

function promptBoolean(question, onTrue, onFalse = () => {}) {
  const readline = require('readline');
  const prompt = readline.createInterface({ input: process.stdin, output: process.stdout });

  function recursivePrompt() {
    prompt.question(`${question} (Y/n): `, async function (answer) {
      const parsedAnswer = answer.toUpperCase();
      if (parsedAnswer === 'Y' || parsedAnswer === '') {
        prompt.close();
        await onTrue();
      } else if (parsedAnswer === 'N') {
        prompt.close();
        await onFalse();
      } else {
        console.log('Please enter a valid answer');
        recursivePrompt();
      }
    });
  }

  recursivePrompt();
}

module.exports = promptBoolean;