Detect if a browser has a mouse or not

example.js

var md = new MouseDetector();

md.on('hasMouse', function() {
  console.log("there's a mouse!");
});

md.on('noMouse', function() {
  console.log("no mouse :(");
});

MouseDetector.coffee

class MouseDetector
  constructor: () ->
    @events = {
      hasMouse: []
      noMouse: []
    }

    mousemoves = 0
    mouseFirstMoved = null

    mouseMovesThreshold = 5
    mouseMovesTimeout = 1000

    document.addEventListener "mousemove", =>
      mousemoves++
      mouseFirstMoved ||= +new Date()

      if mousemoves > mouseMovesThreshold
        if (mouseFirstMoved - +new Date()) < mouseMovesTimeout
          @fire('hasMouse')
        else
          @fire('hasMouse')
        document.removeEventListener "mousemove", arguments.callee

  on: (name, cb) ->
    @events[name]?.push cb

  fire: (name) ->
    for e in @events[name]
      e()

MouseDetector.js

var MouseDetector = (function() {
  function MouseDetector() {
    var mouseFirstMoved, mouseMovesThreshold, mouseMovesTimeout, mousemoves;
    this.events = {
      hasMouse: [],
      noMouse: []
    };
    mousemoves = 0;
    mouseFirstMoved = null;
    mouseMovesThreshold = 5;
    mouseMovesTimeout = 1000;
    document.addEventListener("mousemove", (function(_this) {
      return function() {
        mousemoves++;
        mouseFirstMoved || (mouseFirstMoved = +new Date());
        if (mousemoves > mouseMovesThreshold) {
          if ((mouseFirstMoved - +new Date()) < mouseMovesTimeout) {
            _this.fire('hasMouse');
          } else {
            _this.fire('hasMouse');
          }
          return document.removeEventListener("mousemove", arguments.callee);
        }
      };
    })(this));
  }

  MouseDetector.prototype.on = function(name, cb) {
    var _ref;
    return (_ref = this.events[name]) != null ? _ref.push(cb) : void 0;
  };

  MouseDetector.prototype.fire = function(name) {
    var e, _i, _len, _ref, _results;
    _ref = this.events[name];
    _results = [];
    for (_i = 0, _len = _ref.length; _i < _len; _i++) {
      e = _ref[_i];
      _results.push(e());
    }
    return _results;
  };

  return MouseDetector;

})();