poem-tm-cli/bin/hidden-pass.js

CLI application for the Poem Project

const readline = require('readline');

const hiddenQuestion = query => new Promise((resolve, reject) => {
  const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
  });
  const stdin = process.openStdin();
  process.stdin.on('data', char => {
    char = char + '';
    switch (char) {
      case '\n':
      case '\r':
      case '\u0004':
        stdin.pause();
        break;
      default:
        process.stdout.clearLine();
        readline.cursorTo(process.stdout, 0);
        process.stdout.write(query + Array(rl.line.length + 1).join('*'));
        break;
    }
  });
  rl.question(query, value => {
    rl.history = rl.history.slice(1);
    resolve(value);
  });
});

module.exports = hiddenQuestion;