console_no_formatter.js

// console object

function format (f) {
  var sys = module.requireNative('sys');
  var args = new Array(arguments.length);
  for(var i = 0, len = arguments.length, a; i<len; i++) {
      a = arguments[i];
      sys.puts([i, len, a].join(' '));
      switch (typeof a) {
      case 'string':
          args.push(a);
          break;
      case 'object':
          args.push(sys.inspect(a));
          break;
      case 'undefined':
          break;
      default:
          args.push(a.toString());
      }
  }
    sys.puts(sys.inspect(args));
    sys.puts(args.length);
    return args.join(' ');
}

test_console_no_formatter.js

var undef
    , nil = null;
console.log('num:', 2
            , 'bool', true
            , 'null:', nil
            , 'undefined:', undef
            , 'json:', {"foo":"bar"}
            , 'object:', new require('events').EventEmitter());

// Output
// num: 2 bool true null: null undefined: json: { foo: 'bar' } object: { EventEmitter: [Function], Promise: [Function] }