code: function merge (/* ...objects */) {
    var k, obj
    var res = {}
    var objs = Array.prototype.slice.call(arguments)
  
    for (var i = 0, l = objs.length; i < l; i++) {
      obj = objs[i]
      for (k in obj) {
        if (obj.hasOwnProperty(k)) {
          res[k] = obj[k]
        }
      }
    }
    return res
  }
docs: /* ------- util functions -------