I'm trying to do a gopherjs binding for VueJS. I found a clear way to do bidirectional data bindings from gopherjs to VueJS and so far it works great 😄 But I came into this problem when VueJS trying to set time.Time from javascript side to gopherjs code, error code is here: https://github.com/oskca/gopherjs-vue/blob/master/examples/unwritableTime/main.go#L20. (you can try it with gopherjs serve)

The error stack goes to $internalize, :

  var timePkg = $packages["time"];
  if (timePkg !== undefined && t === timePkg.Time) {
    if (!(v !== null && v !== undefined && v.constructor === Date)) {
      $throwRuntimeError("cannot internalize time.Time from " + typeof v + ", must be Date");
    }
    return timePkg.Unix(new $Int64(0, 0), new $Int64(0, v.getTime() * 1000000));
  }

Normal gopherjs code with time.Time works fine, but in this case VueJS probably tries to set time.Time with a function or some other customed data types.

How could this problem be solved? Isn't !(v !== null && v !== undefined && v.constructor === Date) too much restricted? What about just return time.Time{} with warning message instead?