RMMZ-ES6

/* mixin function within plugin class */
mixin (proto, object) {
  this.base[proto.constructor.name] = { };

  for (const name of Object.keys(object)) {
    this.base[proto.constructor.name][name] = proto[name];
  }

  Object.assign(proto, object);
}



/* calling the mixin function from the plugin class */
plugin.namespace.mixin(Spriteset_Base.prototype, {                                 // {

  /* ====================================================== |       Spriteset_Base | */

  /* < update > -------------------------------------------------------------------- */
  update () {

    plugin.namespace.base.Spriteset_Base.update.call(this);

  },

});                                                                                // }