1757:24  error  This branch can never execute. Its condition is a duplicate or covered by previous conditions in the if-else-if chain  no-dupe-else-if

} else if (tn === $.MAIN || $.MENU ) {

if ((tn === $.BUTTON && ns === NS.HTML) || isScopingElement(tn, ns)) {

function addressStartTagInBody(p, token) {
    if (p.openElements.hasInButtonScope($.P)) {
        p._closePElement();
    }

    p._insertElement(token, NS.HTML);
}

    hasInButtonScope(tagName) {
        for (let i = this.stackTop; i >= 0; i--) {
            const tn = this.treeAdapter.getTagName(this.items[i]);
            const ns = this.treeAdapter.getNamespaceURI(this.items[i]);

            if (tn === tagName && ns === NS.HTML) {
                return true;
            }

            if ((tn === $.BUTTON && ns === NS.HTML) || isScopingElement(tn, ns)) {
                return false;
            }
        }

        return true;
    }