TYPO3 - Bootstrap 4 Navigation without Dropdown

typo3-bootstrap-nav-without-dropdown.ts

rcnav = HMENU
rcnav.wrap (
<nav class="navbar rc-nav">
    <button class="navbar-toggler hidden-md-up" data-target="#rc-nav" data-toggle="collapse" type="button">&#9776; Menü</button>
    <div class="collapse navbar-toggleable-sm" id="rc-nav">
        <ul class="nav navbar-nav container">|</ul>
    </div>
</nav>
)
rcnav.entryLevel = 0
rcnav {
    1 = TMENU
    1 {
    expAll = 1
     
    NO.allWrap = <li class="nav-item">|</li>
    NO.ATagTitle.field = abstract // description // title
     
    ACT = 1
    ACT.wrapItemAndSub = <li class="nav-item active">|</li>
    ACT.ATagTitle.field = abstract // description // title
     
    }
}