[trikadin]

nerv_, почему не можешь-то?

ymaps.ready(() => {
    export class GeoObject extends ymaps.GeoObject {
        /**
         * @param {Object} [feature]
         * @param {Object} [options]
         * @see [url]https://tech.yandex.ru/maps/doc/jsapi/2.1/ref/reference/GeoObject-docpage/[/url]
         */
        constructor(feature, options) {
            super(feature, options);
        }
    };
 
    console.log('GeoObject', GeoObject);
});