HTMLMediaElement: {
    HAVE_CURRENT_DATA: 2;
    HAVE_ENOUGH_DATA: 4;
    HAVE_FUTURE_DATA: 3;
    HAVE_METADATA: 1;
    HAVE_NOTHING: 0;
    NETWORK_EMPTY: 0;
    NETWORK_IDLE: 1;
    NETWORK_LOADING: 2;
    NETWORK_NO_SOURCE: 3;
    prototype: HTMLMediaElement;
    new (): HTMLMediaElement;
}