Read 'hidden' input for CLI Dart app

Question

What's the best way to receive 'hidden' input from a command-line Dart application? For example, in Bash, this is accomplished with:

read -s SOME_VAR

Answer 1

Set io.stdin.echoMode to false:

import 'dart:io' as io;

void main() {
  io.stdin.echoMode = false;

  String input = io.stdin.readLineSync();

  // or 

  var input;
  while(input != 32) {
    input = io.stdin.readByteSync();
    if(input != 10)  print(input);
  }

  // restore echoMode
  io.stdin.echoMode = true;
}