safe-model-events.js

var events = {
  e : {},
  register : function(key, fn) {
    this.e[key] = fn;
  },
  trigger : function(key){
    try {
      this.e[key]();
    } catch(e) {
      if(key != "error")
        this.trigger("error")
    }
  }
}

events.register("err", function(){
  throw "new error";
});

events.register("error", function(){
  console.log("caught an error");
});

events.trigger("err");