gistfile1.txt

var Buffer = exports.Buffer = exports.SlowBuffer = function(v, encoding)
{
  var offset = 0;
  if (v instanceof ArrayBuffer)
    Uint8ClampedArray.call(this, v, offset)
}
Buffer.prototype = Object.create(Uint8ClampedArray.prototype);
Buffer.prototype.TEST = 'TEST ON OBJECT FROM PROTOTYPE';

var x = (new Buffer(new ArrayBuffer(12)))
x[1] = 123;
x[2] = 456;
console.log('is Buffer: %s, is Uint8Array: %s', x instanceof Buffer, x instanceof Uint8Array);
console.log('x: %s, x.TEST: %s, x[0]: %s, x[1]: %s, x[2]: %s', x, x.TEST, x[0], x[1], x[2]);