gistfile1.js

#!/usr/bin/env node

var Dissolve = require("dissolve");

var parser = Dissolve().loop(function(end) {
  this.uint8("numHouses")
      .tap(function() {
        this.housesCount = 0;
      })
      .loop("houses", function(end) {
        this.uint8("numWindows")
            .tap(function() {
              this.windowsCount = 0;
            })
            .loop("windows", function(end) {
              this.uint8("window");

              if (++this.windowsCount == this.vars.numWindows) return end();
            })
            
        if (++this.housesCount == this.vars.numHouses) return end();
      })
    .tap(function() {
      this.push(this.vars);
      this.vars = Object.create(null);
    });
});

parser.on("readable", function() {
  var e;
  while (e = parser.read()) {
    console.log(e);
  }
});

/*
{
  houses: [
    {
      windows: [
       { window: 1 }, 
       { window: 2 }, 
       { window: 3 }
      ],
      doors: [
        { door: 1 }
      ]
    },
    {
      windows: [
        { window: 1 }
      ],
      doors: [
        { door: 1 }, 
        { door: 2 }
      ]
    }
  ]
}
*/
parser.write(new Buffer([
  0x02, // Number of houses - 2 houses
  0x03, // Number of windows - 3 windows ** House 1
  0xa1, // window 1
  0xa2, // window 2
  0xa3, // window 3
  0x01, // Number of doors - 1 door
  0xd1, // door 1 
  0x01, // Number of windows - 1 window ** House 2
  0xa1, // window 1
  0x02, // Number of doors - 2 doors 
  0xd1, // door 1
  0xd2  // door 2
  ]));