nodejs how to read keystrokes from stdin

Question

Is it possible to listen for incoming keystrokes in a running nodejs script? If I use process.openStdin() and listen to its \'data\' event then the

Answer 1

With nodejs 0.6.4 tested (Test failed in version 0.8.14):

rint = require('readline').createInterface( process.stdin, {} ); 
rint.input.on('keypress',function( char, key) {
    //console.log(key);
    if( key == undefined ) {
        process.stdout.write('{'+char+'}')
    } else {
        if( key.name == 'escape' ) {
            process.exit();
        }
        process.stdout.write('['+key.name+']');
    }

}); 
require('tty').setRawMode(true);
setTimeout(process.exit, 10000);

if you run it and:

  <--type '1'
{1}
  <--type 'a'
{1}[a]

Important code #1:

require('tty').setRawMode( true );

Important code #2:

.createInterface( process.stdin, {} );